Heat, Bucks
- When
- August 31, 11:59 PM EST
- Where
- Bucks forecast zone
- Reported by
- AWOS,ASOS,MESONET,ETC
Heat in Pennsylvania, August 31, 1999
1 degrees for the meteorological summer of 1999 (June through August) at Philadelphia International Airport was tied for the fifth warmest summer on record. 6 degrees).
Where it happened
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
- Tornadoes
- Tropical storms and surge
- Floods
- Wind
- Hail
- Winter weather
- Heat and drought
- Cold
- Fire, smoke and dust
- Marine and coastal
- Other
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- None recorded
- Crop damage
- None recorded
- Events
- 5
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.
What happened
The episode as NWS PHI wrote it up.
The mean temperature of 77.1 degrees for the meteorological summer of 1999 (June through August) at Philadelphia International Airport was tied for the fifth warmest summer on record. The warmest on record was the summer of 1995 (78.6 degrees). There were also 35 days in which the maximum temperature at the airport reached 90 degrees or higher this past summer. This was the most since 1995 (49 days).
The radar
The national radar mosaic for the moment the first event began.
Event by event
5 heat. Local standard time, as filed.
Heat, Chester
- When
- August 31, 11:59 PM EST
- Where
- Chester forecast zone
- Reported by
- AWOS,ASOS,MESONET,ETC
Heat, Delaware
- When
- August 31, 11:59 PM EST
- Where
- Delaware forecast zone
- Reported by
- AWOS,ASOS,MESONET,ETC
- Coordinates
- 39.917, -75.399 (the zone’s center; the record gives no point)
Heat, Montgomery
- When
- August 31, 11:59 PM EST
- Where
- Montgomery forecast zone
- Reported by
- AWOS,ASOS,MESONET,ETC
Heat, Philadelphia
- When
- August 31, 11:59 PM EST
- Where
- Philadelphia forecast zone
- Reported by
- AWOS,ASOS,MESONET,ETC
- Coordinates
- 40.008, -75.134 (the zone’s center; the record gives no point)
What these are
- Heat
- Heat below excessive heat criteria that still caused deaths, injuries or significant impacts.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Hail and Damaging Winds in Texas, August 31, 1999
- Flash Flood and Hail in Arizona, August 31, 1999
- Damaging Wind in Texas, August 31, 1999
- Lightning Strike in Puerto Rico, August 31, 1999
- High Surf in Hawaii, August 31, 1999
- Hail and Damaging Wind in North Dakota, August 31, 1999
- Heat in New Jersey, August 31, 1999
- Strong Wind in Hawaii, August 31, 1999
- Cold in Alabama, August 31, 1999
- Waterspout in Florida, August 31, 1999
- Tornado in Florida, August 31, 1999
- Hail in Texas, August 31, 1999
More
Every storm in Pennsylvania in 1999Every state in 1999This day in weather historyWarnings in Pennsylvania, August 1999
Sources
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 2026-09-24. Each event’s entry at NCEI: 5718196, 5718197, 5718198, 5718199, 5718200.