Headline:
Heat Advisory issued May 20 at 3:27AM EDT until May 20 at 8:00PM EDT by NWS Mount Holly NJ
Event:
Heat Advisory
Urgency:
Expected
Effective:
May 20, 2026 - 12:27am
Expires:
May 20, 2026 - 1:30pm
Description:
* WHAT...Heat index values up to 93 degrees expected.
* WHERE...In New Jersey, Morris, Somerset, 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...Hot temperatures and high humidity may cause heat
illnesses.
* ADDITIONAL DETAILS...Maximum heat indices near 95 degrees during
peak heating this afternoon. Given the intensity of this early
season stretch of heat and humidity, we are not fully acclimated
to it and therefore impacts could be greater if precautions are
not taken. Showers and some thunderstorms arrive this afternoon
and evening which will end this early season heat.
Instruction:
Drink plenty of fluids, stay in an air-conditioned room, stay out of
the sun, and check up on relatives and neighbors.
Area Description:
Warren; Morris; Hunterdon; Somerset; Berks; Lehigh; Northampton; Western Chester; Western Montgomery; Upper Bucks
Forcast Office:
NWS Mount Holly NJ
Sender: