NWS Mount Holly NJXH.W 0002July 14, 2026
Extreme Heat Warning: New Castle, Mercer, Gloucester and 6 more, DE and NJ
The National Weather Service office in Mount Holly issued an extreme heat warning for New Castle, Mercer, Gloucester and 6 more in Delaware, New Jersey, Pennsylvania, which was in force until 8:00 p.m. local time on July 15. It was the 2nd extreme heat warning the NWS office in Mount Holly issued in 2026. Delaware had 2 extreme heat warnings in July 2026, against 2 in an average July of 2008-2025.
ExpiredWarning
In force for 10 hours; it has expired. The agency may have replaced it with a new notice.
The notice
- Issued by
- National Weather Service, Mount Holly NJ
- Area
- New Castle, Mercer, Gloucester and 6 more
- State
- Delaware
- Level
- Warning
- Issued
- 2:38 a.m. EDT, July 14, 2026
- In force from
- 10:00 a.m. EDT, July 15, 2026
- Expires
- 8:00 p.m. EDT, July 15, 2026
- CAP severity, certainty, urgency
- Severe, Likely, Expected
- VTEC event
- KPHI XH.W 0002
- Official source
- National Weather Service: the notice at its source
Source: National Weather Service: the notice at its source. AreaZine rebuilds this page from the agency's record; the agency's page is the one to act on. A U.S. Government work, in the public domain.
The notice as issued
* WHAT...Dangerously hot conditions with heat index values up to 107 degrees expected. * WHERE...In Delaware, New Castle County. In New Jersey, Mercer, Camden, Gloucester, and Northwestern Burlington Counties. In Pennsylvania, Delaware, Eastern Montgomery, Lower Bucks, and Philadelphia Counties. * WHEN...From 10 AM to 8 PM EDT Wednesday. * IMPACTS...Heat related illnesses increase significantly during extreme heat and high humidity events. * ADDITIONAL DETAILS...While the hottest conditions are expected to occur on Wednesday, heat indices will climb into the mid 90s today.
What the agency told people to do
Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. Do not leave young children and pets in unattended vehicles. Car interiors will reach lethal temperatures in a matter of minutes. Take extra precautions when outside. Wear lightweight and loose fitting clothing. Try to limit strenuous activities to early morning or evening. Take action when you see symptoms of heat exhaustion and heat stroke. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1. If you do not have air conditioning in your home or lack shelter, you can call 211 or visit your county or state health department website for assistance locating appropriate shelter from the heat.
Source: National Weather Service: the notice at its source. The text is the agency's, unedited. A U.S. Government work, in the public domain.