A strong ridge of high pressure both at the surface and aloft combined with a flow of moist air northward from the Gulf of Mexico resulted in excessive heat across parts of southeastern Pennsylvania.
Every event with a place to put it; 8 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS PHI wrote it up.
A strong ridge of high pressure both at the surface and aloft combined with a flow of moist air northward from the Gulf of Mexico resulted in excessive heat across parts of southeastern Pennsylvania.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Philadelphia/Mount Holly wrote its last area forecast discussion before the first event at Jun 22, 10:36 AM EST, 24 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
8 excessive heat. Local standard time, as filed.
The heat index reached 105 F at Philadelphia International Airport and Northeast Philadelphia Airport.
The heat index reached 105 F at Philadelphia International Airport and Wilmington Airport.
The heat index reached 105 F at Chester County Airport, Philadelphia International Airport and Wilmington Airport.
The heat index reached 105 F at Pottstown Limerick Airport, Philadelphia International Airport and Northeast Philadelphia Airport.
The heat index reached 106 F at Quakertown Airport.
The heat index reached 105 F at Chester County Airport.
The heat index reached 105 F at Pottstown Limerick Airport.
The heat index reached 105 F at Northeast Philadelphia Airport and 106 F at Quakertown Airport.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 2024Every state in 2024This day in weather historyWarnings in Pennsylvania, June 2024
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 1187909, 1187910, 1187911, 1187912, 1187913, 1187914, 1187915, 1187916.