Rapid Alerts

* WHAT...Dangerously hot conditions with peak afternoon heat index values from 100 to 110 degrees expected.

* WHERE...Portions of northern Indiana, southwest Michigan, and northwest Ohio.

* WHEN...Until 8 PM EDT /7 PM CDT/ Thursday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* ADDITIONAL DETAILS...Peak afternoon heat indices around 100 degrees may extend into Friday.

* WHAT...Dangerously hot conditions with heat index values up to 111 expected.

* WHERE...Dinwiddie, Surry, and Sussex Counties.

* WHEN...From 10 AM Thursday to 8 PM EDT Friday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT...For the Heat Advisory, heat index values up to 104 expected. For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 109 expected.

* WHERE...Clarke, Frederick, Page, Shenandoah, and Warren Counties.

* WHEN...For the Heat Advisory, from 10 AM to 8 PM EDT Thursday. For the Extreme Heat Warning, from 10 AM to 8 PM EDT Friday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.

* WHAT...For the first Extreme Heat Warning, dangerously hot conditions with heat index values up to 112 expected. For the second Extreme Heat Warning, dangerously hot conditions with heat index values up to 112 expected.

* WHERE...The Washington and Baltimore metropolitan areas including the District of Columbia and city of Baltimore, northeast, central, and southern Maryland, as well as northern Virginia and the Virginia Piedmont.

* WHEN...For the first Extreme Heat Warning, from 10 AM to 8 PM EDT Thursday. For the second Extreme Heat Warning, from 10 AM to 8 PM EDT Friday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT...Dangerously hot conditions with heat index values up to 110 expected, with limited relief overnight.

* WHERE...Portions of east central Ohio, northwest, southwest, and western Pennsylvania, and northern and the northern panhandle of West Virginia.

* WHEN...Until 10 PM EDT Friday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT...Dangerously hot conditions with heat index values up to 108 expected.

* WHERE...Portions of north central, northeast, and northwest Ohio.

* WHEN...Until 8 PM EDT Friday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. A prolonged period of dangerously hot and humid conditions with little overnight relief is expected through the week, which will increase impacts to vulnerable populations.

...The Flood Warning is extended for the following rivers in Kentucky...

Rough River near Dundee affecting Ohio County.

.Heavy rain from this past weekend caused the river to rise.

* WHAT...Moderate flooding is occurring and minor flooding is forecast.

* WHERE...Rough River near Dundee.

* WHEN...Until early Friday morning.

* IMPACTS...At 25.0 feet, County roads between Dundee and Narrows flood. At 26.0 feet, County roads near Sunnydale flood. At 27.0 feet, KY 919 flood at Underwood and Clifty Huff Roads near Narrows. At 28.0 feet, Trailer courts in Hartford flood. At 29.0 feet, KY 136 at Heflin Road floods near county line. KY 69 floods near intersection of US 231 in Hartford. At 30.0 feet, US 231 floods at shopping center between Hartford and Beaver Dam.

* ADDITIONAL DETAILS... - At 9:00 AM CDT Tuesday, June 30 the stage was 28.7 feet. Due to a data outage, current stage is estimated at 26.5 feet by the county Emergency Manager. - Bankfull stage is 23.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 9:00 AM CDT Tuesday was missing. - Forecast...The river is expected to fall below flood stage tomorrow evening and continue falling to 14.1 feet early Monday afternoon. - Flood stage is 25.0 feet. - Flood History...This crest compares to a previous crest of 29.1 feet on 02/17/2025. - http://www.weather.gov/safety/flood

The National Weather Service in New Orleans has issued a

* Flash Flood Warning for... Northeastern Livingston Parish in southeastern Louisiana... Southwestern Tangipahoa Parish in southeastern Louisiana...

* Until 745 PM CDT.

* At 445 PM CDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 3 and 4 inches of rain have fallen. Flash flooding is ongoing or expected to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar indicated.

IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include... Hammond, Ponchatoula, Albany, Springfield and Natalbany.

* WHAT...Dangerously hot conditions with heat index values up to 103.

* WHERE...Anderson, Coffey, Douglas, Franklin, Osage, Shawnee, and Jefferson Counties.

* WHEN...Until 8 PM CDT Saturday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

The National Weather Service in Great Falls has issued a

* Flash Flood Warning for... Northwestern Broadwater County in southwestern Montana... North Central Jefferson County in southwestern Montana... Southeastern Lewis and Clark County in west central Montana...

* Until 545 PM MDT.

* At 251 PM MDT, trained weather spotters reported thunderstorms producing heavy rain across the warned area. The expected rainfall rate is 0.5 to 1.5 inches in 1 hour. Additional rainfall amounts up to 1 inch are possible in the warned area. Flash flooding is already occurring.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Trained spotters reported.

IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include... Helena, Townsend, East Helena, Winston, Goose Bay, Silos, York and Spring Meadow Lake State Park.

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THURSDAY TO MIDNIGHT MDT THURSDAY NIGHT FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 220, 221, 222, 223, 224, 225, AND 229...

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 220, 221, 222, 223, 224, 225, AND 229...

* AFFECTED AREA...Fire Weather Zones 220, 221, 222, 223, 224, 225 and 229.

* WINDS...Southwest 15 to 25 mph with gusts up to 40 mph.

* RELATIVE HUMIDITY...As low as 5 percent.

* IMPACTS...Elevated fire danger is expected. Fires will catch and spread rapidly and erratically.

...RED FLAG WARNING REMAINS IN EFFECT FROM 10 AM THURSDAY TO MIDNIGHT MDT THURSDAY NIGHT FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 220, 221, 222, 223, 224, 225, AND 229...

...FIRE WEATHER WATCH REMAINS IN EFFECT FROM FRIDAY MORNING THROUGH FRIDAY EVENING FOR GUSTY WINDS AND LOW RELATIVE HUMIDITY FOR FIRE WEATHER ZONES 220, 221, 222, 223, 224, 225, AND 229...

* AFFECTED AREA...Fire Weather Zones 220, 221, 222, 223, 224, 225 and 229.

* WINDS...Southwest 15 to 25 mph with gusts up to 40 mph.

* RELATIVE HUMIDITY...As low as 5 percent.

* IMPACTS...Elevated fire danger is expected. Fires will catch and spread rapidly and erratically.

The National Weather Service in Peachtree City has issued a

* Flash Flood Warning for... Northeastern Union County in north central Georgia...

* Until 1015 PM EDT.

* At 419 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2.5 inches of rain have fallen. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar indicated.

IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include... Blairsville, Track Rock, Owltown and Brasstown Bald.

* WHAT...Dangerously hot conditions with peak afternoon heat index values of 100 to 105 degrees expected.

* WHERE...Portions of central, east central, north central, and northeast Illinois and northwest Indiana.

* WHEN...Until midnight CDT /1 AM EDT/ Thursday Night.

* IMPACTS...Heat related illnesses increase during heat waves.

* ADDITIONAL DETAILS...Dangerous heat is expected to persist through Thursday. Thunderstorms may begin to bring some relief from the heat for portions of northern Illinois by Thursday afternoon or evening.

* WHAT...Dangerously hot conditions with heat index values up to 105-110F expected.

* WHERE...Portions of east central and northeast Kansas and central, north central, northeast, northwest, and west central Missouri.

* WHEN...Until 9 PM CDT Friday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* ADDITIONAL DETAILS...Several days of extreme heat will impact the region with poor heat relief during the overnight hours.

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 111. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 103 possible.

* WHERE...Bronx, Kings (Brooklyn), New York (Manhattan), Northern Queens, Richmond (Staten Island), and Southern Queens Counties.

* WHEN...For the Extreme Heat Warning, until 9 PM EDT Friday. For the Extreme Heat Watch, from Friday evening through Saturday evening.

* IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 113. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 103 possible.

* WHERE...Portions of southern Connecticut, northeast New Jersey, and southeast New York.

* WHEN...For the Extreme Heat Warning, until 9 PM EDT Friday. For the Extreme Heat Watch, from Friday evening through Saturday evening.

* IMPACTS...Extreme heat and humidity will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.

* WHAT...Dangerously hot and humid conditions with continued heat index values of 100 to 110 expected today, along with nighttime lows not falling below the mid to upper 70s.

* WHERE...In Illinois, Carroll, Jo Daviess, and Stephenson Counties. In Iowa, Benton, Jackson, Jones, Linn, Buchanan, Delaware, and Dubuque Counties.

* WHEN...Until 10 PM CDT this evening.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT...Dangerously hot and humid conditions with multiple days of heat index values of 100 to 110 expected, along with nighttime lows not falling below the mid to upper 70s.

* WHERE...In Illinois, Bureau, Putnam, Henry IL, and Whiteside Counties. In Iowa, Clinton County.

* WHEN...Until 10 PM CDT Thursday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values reaching 109 to 113. For the Heat Advisory, heat index values up to 109 expected.

* WHERE...Portions of north central, northeast, and northwest Alabama and southern middle Tennessee.

* WHEN...For the Extreme Heat Warning, until 7 PM CDT Thursday. For the Heat Advisory, from 7 PM Thursday to 7 PM CDT Friday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.

* WHAT...Dangerously hot conditions with heat index values over 100.

* WHERE...Much of central and southern Iowa.

* WHEN...Until 10 PM CDT this evening.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT...Dangerously hot conditions with heat index values over 100.

* WHERE...Portions of central and southern Iowa.

* WHEN...Until 10 PM CDT Thursday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT...Dangerously hot conditions with heat index values of 98 to 115 degrees expected. The worst of this heat and humidity will be Thursday and Friday.

* WHERE...All of southern New England except the Cape and Islands.

* WHEN...Until 8 PM EDT Saturday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* ADDITIONAL DETAILS...This is a prolonged and dangerous heatwave with little relief at night.

* WHAT...For the first Heat Advisory, heat index values up to 108. For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 114 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 110 possible. For the second Heat Advisory, heat index values up to 109 expected.

* WHERE...Portions of central, eastern, and north central Arkansas.

* WHEN...For the first Heat Advisory, until noon CDT Thursday. For the Extreme Heat Warning, from noon to 8 PM CDT Thursday. For the Extreme Heat Watch, from Thursday evening through Friday evening. For the second Heat Advisory, from 8 PM Friday to 8 PM CDT Saturday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.

* WHAT...For the first Heat Advisory, heat index values up to 108. For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 114 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 110 possible. For the second Heat Advisory, heat index values up to 109 expected.

* WHERE...Portions of central, eastern, and north central Arkansas.

* WHEN...For the first Heat Advisory, until noon CDT Thursday. For the Extreme Heat Warning, from noon to 8 PM CDT Thursday. For the Extreme Heat Watch, from Thursday evening through Friday evening. For the second Heat Advisory, from 8 PM Friday to 8 PM CDT Saturday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.

* WHAT...Dangerously hot conditions with afternoon heat index values peaking around 104 degrees.

* WHERE...Anderson, Coffey, Douglas, Franklin, Osage, Shawnee, and Jefferson Counties.

* WHEN...Until 8 PM CDT Saturday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 115. For the Heat Advisory, heat index values up to 110 expected.

* WHERE...Portions of southeast Arkansas and central, north central, and northwest Mississippi.

* WHEN...For the Extreme Heat Warning, until 9 PM CDT this evening. For the Heat Advisory, from 10 AM to 8 PM CDT Thursday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

The National Weather Service in Grand Junction has issued a Red Flag Warning for gusty winds, low relative humidity and dry fuels, which is in effect from noon to 8 PM MDT Thursday. The Fire Weather Watch is no longer in effect.

* AFFECTED AREA...In Colorado, Fire Weather Zone 207 Southwest Colorado Lower Forecast Area, Fire Weather Zone 290 Paradox Valley Forecast Area, Fire Weather Zone 291 Northern San Juan Forecast Area, Fire Weather Zone 292 North Fork Forecast Area, Fire Weather Zone 293 Gunnison Basin Forecast Area and Fire Weather Zone 294 Southwest Colorado Upper West Forecast Area. In Utah, Fire Weather Zone 491 Southeast Utah.

* TIMING...For the first Red Flag Warning, until 8 PM MDT this evening. For the second Red Flag Warning, from noon to 8 PM MDT Thursday.

* WINDS...Southwest 10 to 20 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...6 to 11 percent.

* IMPACTS...Fires will catch and spread quickly. Exercise extreme caution with any outdoor burning.

The National Weather Service in Grand Junction has issued a Red Flag Warning below 8000 feet for gusty winds, low relative humidity and dry fuels, which is in effect from noon to 8 PM MDT Thursday. The Fire Weather Watch is no longer in effect.

* AFFECTED AREA...In Colorado, Fire Weather Zone 205 Colorado River Headwaters below 8000 feet.

* TIMING...For the first Red Flag Warning, until 8 PM MDT this evening. For the second Red Flag Warning, from noon to 8 PM MDT Thursday.

* WINDS...Southwest 10 to 20 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...7 to 12 percent.

* IMPACTS...Any fire that develops will catch and spread quickly. Outdoor burning is not recommended.

* WHAT...Dangerously hot conditions are expected through Friday, with afternoon heat index values near or exceeding 105 degrees and only limited relief at night.

* WHERE...Portions of east central, northeast, south central, and southeast Kentucky.

* WHEN...Until 8 PM EDT Friday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* ADDITIONAL DETAILS...An extended period of hot and humid conditions continues through at least Friday - with the most oppressive conditions expected on Thursday.

...CRITICAL FIRE WEATHER CONDITIONS EXPECTED FOR SOUTH PARK, THE SOUTHERN FOOTHILLS, AND THE PALMER DIVIDE TODAY...POTENTIALLY CONTINUING THROUGH FRIDAY...

...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR SOUTH PARK...

The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from noon to 8 PM MDT Thursday.

* AFFECTED AREA...Fire Weather Zone 214.

* TIMING...For the first Red Flag Warning, until 8 PM MDT this evening. For the second Red Flag Warning, from noon to 8 PM MDT Thursday.

* WINDS...Southwest 10 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...As low as 7 percent.

* IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire.

...CRITICAL FIRE WEATHER CONDITIONS EXPECTED FOR SOUTH PARK, THE SOUTHERN FOOTHILLS, AND THE PALMER DIVIDE TODAY...POTENTIALLY CONTINUING THROUGH FRIDAY...

...RED FLAG WARNING IN EFFECT FROM NOON TO 8 PM MDT THURSDAY FOR WIND AND LOW RELATIVE HUMIDITY FOR SOUTH PARK...

The National Weather Service in Denver has issued a Red Flag Warning for wind and low relative humidity, which is in effect from noon to 8 PM MDT Thursday.

* AFFECTED AREA...Fire Weather Zone 214.

* TIMING...For the first Red Flag Warning, until 8 PM MDT this evening. For the second Red Flag Warning, from noon to 8 PM MDT Thursday.

* WINDS...Southwest 10 to 20 mph with gusts up to 30 mph.

* RELATIVE HUMIDITY...As low as 7 percent.

* IMPACTS...Conditions will be favorable for rapid fire spread. Avoid outdoor burning and any activity that may produce a spark and start a wildfire.

* WHAT...Dangerously hot conditions with daily heat index values peaking up to around 110 degrees.

* WHERE...All of southern Illinois, southwest Indiana, western Kentucky, and southeast Missouri.

* WHEN...Until 8 PM CDT /9 PM EDT/ Friday.

* IMPACTS...Heat related illnesses increase significantly during prolonged extreme heat and high humidity events.

* WHAT...Dangerously hot conditions with heat index values up to 107.

* WHERE...Portions of south central, southwest, and west central Illinois and central, east central, northeast, and southeast Missouri.

* WHEN...Until 10 PM CDT Friday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT...Dangerously hot conditions with heat index values up to 105.

* WHERE...Marshall, Mason, McLean, Peoria, Stark, Tazewell, Woodford, Fulton, and Knox Counties.

* WHEN...Until midnight CDT Thursday Night.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* ADDITIONAL DETAILS...Heat indices currently are forecast to reach around or just above 100 degrees on Friday afternoon. Its possible the extreme heat warning may need to be extended into Friday afternoon if thunderstorm chances stay further north.

* WHAT...Dangerously hot conditions with afternoon heat index values up to 105 to 110.

* WHERE...Portions of central, east central, southeast, and west central Illinois.

* WHEN...Until 7 PM CDT Friday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT...Dangerously hot conditions with peak heat index values between 100 and 115 degrees Fahrenheit. Mild overnight temperatures will also not allow for much reprieve from the hot and humid conditions.

* WHERE...Portions of south central Indiana and east central, north central, northwest, and south central Kentucky.

* WHEN...Until 9 PM EDT /8 PM CDT/ Friday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT...Dangerously hot conditions with heat index values up to 105.

* WHERE...The Champlain Valley of New York and Vermont, as well as eastern Windsor County in Vermont.

* WHEN...Until 7 PM EDT Friday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* ADDITIONAL DETAILS...The highest heat index values will occur between 1 PM and 5 PM daily through Friday.

...RED FLAG WARNING IN EFFECT FROM 1 PM TO 8 PM MDT THURSDAY DUE TO STRONG WINDS AND LOW RELATIVE HUMIDITY FOR THE NORTHEAST PLAINS AND NORTHEAST HIGHLANDS...

.Humidity will trend down some Thursday, while wind speeds trend up sufficiently to produce critical fire weather conditions across portions of northeast NM during the afternoon and early evening hours. Several hours of single digit humidity values are expected across the Northeast Highlands.

The National Weather Service in Albuquerque NM has issued a Red Flag Warning in effect from 1 PM to 8 PM MDT Thursday.

* AFFECTED AREA...Northeast Plains (Zone 104) and Northeast Highlands (Zone 123).

* TIMING...From 1 PM to 8 PM MDT Thursday.

* 20 FOOT WINDS...Southwest winds 15 to 25 mph with gusts up to 35 mph.

* RELATIVE HUMIDITY...Relative humidity between 6 to 15 percent.

* IMPACTS...Any fires that develop will spread rapidly. Outdoor burning is not recommended.

* WHAT...Dangerously hot conditions with heat index values up to 100.

* WHERE...Portions of east central, south central, and southeast Wisconsin.

* WHEN...Until 10 PM CDT Thursday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT...For the Heat Advisory, heat index values up to 106. For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 110 expected.

* WHERE...Eastern Louisa, Fluvanna, Western Hanover, and Western Louisa Counties.

* WHEN...For the Heat Advisory, until 8 PM EDT this evening. For the Extreme Heat Warning, from 10 AM Thursday to 8 PM EDT Friday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.

* WHAT...For the Heat Advisory, heat index values up to 104. For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 110 expected.

* WHERE...Interior Waldo, Kennebec, Lincoln, Sagadahoc, and Coastal Cumberland Counties.

* WHEN...For the Heat Advisory, until 8 PM EDT this evening. For the Extreme Heat Warning, from 11 AM to 8 PM EDT Thursday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.

* ADDITIONAL DETAILS...Overnight low temperatures will only fall into the 70s, resulting in accumulated heat stress.

* WHAT...Dangerously hot conditions with heat index values up to 110.

* WHERE...Portions of southwest and western Maine and central, northern, and southern New Hampshire.

* WHEN...Until 8 PM EDT Friday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* ADDITIONAL DETAILS...Overnight low temperatures will only fall into the 70s, resulting in accumulated heat stress.

* WHAT...Dangerously hot conditions with heat index values up to 105.

* WHERE...Portions of central, south central, southwest, and west central Michigan.

* WHEN...Until 8 PM EDT Thursday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

...The Flood Warning continues for the following rivers in Illinois...

Illinois River at Meredosia.

Illinois River at Hardin.

...The Flood Warning is extended for the following rivers in Illinois...

Illinois River at La Grange LD.

Illinois River at Valley City.

River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours.

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Illinois River at Valley City.

* WHEN...Until Tuesday evening.

* IMPACTS...At 14.0 feet, The road to Norbut Fish and Wildlife area is flooded.

* ADDITIONAL DETAILS... - At 12:30 PM CDT Wednesday the stage was 17.0 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 12:30 PM CDT Wednesday was 17.4 feet. - Forecast...The river is expected to fall below flood stage Monday afternoon and continue falling to 12.7 feet Wednesday, July 08. - Flood stage is 14.0 feet.

...The Flood Warning continues for the following rivers in Illinois...

Illinois River at Meredosia.

Illinois River at Hardin.

...The Flood Warning is extended for the following rivers in Illinois...

Illinois River at La Grange LD.

Illinois River at Valley City.

River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours.

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Illinois River at Meredosia.

* WHEN...Until Monday evening.

* IMPACTS...At 20.0 feet, Beach Road just north of Shady Acres floods near this height.

* ADDITIONAL DETAILS... - At 12:30 PM CDT Wednesday the stage was 19.3 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 12:30 PM CDT Wednesday was 19.7 feet. - Forecast...The river is expected to remain near a height of 19.3 feet this afternoon. It will then fall below flood stage Sunday afternoon. - Flood stage is 17.0 feet.

...The Flood Warning continues for the following rivers in Illinois...

Illinois River at Meredosia.

Illinois River at Hardin.

...The Flood Warning is extended for the following rivers in Illinois...

Illinois River at La Grange LD.

Illinois River at Valley City.

River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours.

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Illinois River at La Grange LD.

* WHEN...Until Monday evening.

* IMPACTS...At 24.0 feet, Extensive wetland acreage south of La Grange begins flooding.

* ADDITIONAL DETAILS... - At 12:00 PM CDT Wednesday the stage was 25.3 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 12:00 PM CDT Wednesday was 25.7 feet. - Forecast...The river is expected to remain near a height of 25.3 feet this afternoon. It will then fall below flood stage early Sunday afternoon. - Flood stage is 23.0 feet.

...The Flood Warning continues for the following rivers in Illinois...

Illinois River at Meredosia.

Illinois River at Hardin.

...The Flood Warning is extended for the following rivers in Illinois...

Illinois River at La Grange LD.

Illinois River at Valley City.

River forecasts are based on observed precipitation and forecast precipitation for the next 24 hours.

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...Illinois River at Hardin.

* WHEN...Until Sunday evening.

* IMPACTS...At 25.0 feet, Flood Stage. Lowland flooding of unprotected agricultural land begins.

* ADDITIONAL DETAILS... - At 12:30 PM CDT Wednesday the stage was 25.7 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 12:30 PM CDT Wednesday was 26.0 feet. - Forecast...The river is expected to remain near a height of 25.7 feet this afternoon. It will then fall below flood stage early Saturday afternoon. - Flood stage is 25.0 feet.

* WHAT...Dangerously hot conditions with peak heat index values between 105 to 110.

* WHERE...Portions of central, east central, north central, south central, southeast, southwest, and west central Indiana.

* WHEN...Until 8 PM EDT Friday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* WHAT...For the first Heat Advisory, heat index values up to 110. For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 111 expected. For the second Heat Advisory, heat index values up to 110 expected.

* WHERE...Portions of East Arkansas, North Mississippi, Southeast Missouri, and West Tennessee.

* WHEN...For the first Heat Advisory, until noon CDT Thursday. For the Extreme Heat Warning, from noon to 8 PM CDT Thursday. For the second Heat Advisory, from 8 PM Thursday to 8 PM CDT Saturday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.

* WHAT...For the first Extreme Heat Warning, dangerously hot conditions with heat index values up to 106. For the Heat Advisory, heat index values up to 104 expected. For the second Extreme Heat Warning, dangerously hot conditions with heat index values up to 108 expected.

* WHERE...Eastern Grant and Eastern Mineral Counties.

* WHEN...For the first Extreme Heat Warning, until 8 PM EDT this evening. For the Heat Advisory, from 10 AM to 8 PM EDT Thursday. For the second Extreme Heat Warning, from 10 AM to 8 PM EDT Friday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.

* WHAT...For the Heat Advisory, heat index values up to 107. For the first Extreme Heat Warning, dangerously hot conditions with heat index values up to 111 expected. For the second Extreme Heat Warning, dangerously hot conditions with heat index values up to 112 expected.

* WHERE...Portions of DC, central, north central, northeast, northern, and southern Maryland, and central, northern, and northwest Virginia.

* WHEN...For the Heat Advisory, until 8 PM EDT this evening. For the first Extreme Heat Warning, from 10 AM to 8 PM EDT Thursday. For the second Extreme Heat Warning, from 10 AM to 8 PM EDT Friday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.

* WHAT...For the first Heat Advisory, heat index values up to 103. For the second Heat Advisory, heat index values up to 103 expected. For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 106 expected.

* WHERE...Hampshire and Hardy Counties.

* WHEN...For the first Heat Advisory, until 8 PM EDT this evening. For the second Heat Advisory, from 10 AM to 8 PM EDT Thursday. For the Extreme Heat Warning, from 10 AM to 8 PM EDT Friday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.

* WHAT...For the Heat Advisory, heat index values up to 109. For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 114 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 112 possible.

* WHERE...Portions of central, eastern, and north central Arkansas.

* WHEN...For the Heat Advisory, until noon CDT Thursday. For the Extreme Heat Warning, from noon to 8 PM CDT Thursday. For the Extreme Heat Watch, from Thursday evening through Friday evening.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.

* WHAT...For the Heat Advisory, heat index values up to 109. For the Extreme Heat Warning, dangerously hot conditions with heat index values up to 114 expected. For the Extreme Heat Watch, dangerously hot conditions with heat index values up to 112 possible.

* WHERE...Portions of central, eastern, and north central Arkansas.

* WHEN...For the Heat Advisory, until noon CDT Thursday. For the Extreme Heat Warning, from noon to 8 PM CDT Thursday. For the Extreme Heat Watch, from Thursday evening through Friday evening.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.

* WHAT...Dangerously hot conditions with heat index values of 105 to 110 expected.

* WHERE...Litchfield county in Connecticut, southern Berkshire county in Massachusetts, Bennington and eastern Windham counties in Vermont, and in eastern New York the following counties: southern Herkimer, southern Fulton, Montgomery, Schoharie, Albany, Schenectady, Saratoga, southeast Warren, Washington, Rensselaer, Columbia, eastern Greene, Dutchess, and Ulster.

* WHEN...Until 8 PM EDT Friday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* ADDITIONAL DETAILS...There will be little to no relief at night, with low temperatures in the 70s along with humid conditions persisting across much of the area tonight and Thursday night.

* WHAT...For the Extreme Heat Warning, dangerously hot conditions with heat index values reaching 109 to 113. For the Heat Advisory, heat index values up to 109 expected.

* WHERE...Portions of north central, northeast, and northwest Alabama and southern middle Tennessee.

* WHEN...Until 7 PM CDT Thursday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. Hot temperatures and high humidity may cause heat illnesses.

* WHAT...Dangerously hot conditions with heat index values between 100 and 108 degrees expected at lower elevations each day. Heat index values up to 100 degrees expected across the Pocono Plateau.

* WHERE...Carbon and Monroe Counties.

* WHEN...Until 8 PM EDT Saturday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.

* ADDITIONAL DETAILS...Very warm low temperatures in the low to mid 70s at night will not offer much relief from the heat. This combined with multiple days of near record breaking temperatures will exacerbate the impacts from the heat and humidity. The hottest conditions are expected to occur Thursday through Friday.

* WHAT...Dangerously hot conditions with heat index values up to 110 expected, with limited relief overnight.

* WHERE...Portions of east central Ohio, northwest, southwest, and western Pennsylvania, and northern and the northern panhandle of West Virginia.

* WHEN...Until 10 PM EDT Friday.

* IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events.