NWS / NOAA weather: Extreme Heat Warning issued July 4 at 3:10PM EDT until July 4 at 8:00PM EDT by NWS Mount Holly NJ

* WHAT...Dangerously hot conditions with maximum heat index values
between 100 and 110 degrees expected.

* WHERE...In New Jersey, Morris, Sussex, Warren, and Hunterdon
Counties. In Pennsylvania, Berks, Lehigh, Northampton, Upper
Bucks, Western Chester, and Western Montgomery Counties.

* WHEN...Until 8 PM EDT this evening.

* 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 any relief from the heat. This
combined with multiple days of near record breaking temperatures
will exacerbate the impacts from the heat and humidity.

Source: NWS / NOAA weather.