Flash Flood, Chester
- When
- December 2, 5:00 AM EST to 8:30 AM EST
- Where
- Chester County, Countywide
- Coordinates
- 39.973, -75.748 (the zone’s center; the record gives no point)
Rain, which fell from December 1st into the morning of the 2nd, became heavy at times during the early morning hours on the second. This caused flooding on some of the smaller creeks and streams as well as urban flooding in Chester County.
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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.
Rain, which fell from December 1st into the morning of the 2nd, became heavy at times during the early morning hours on the second. This caused flooding on some of the smaller creeks and streams as well as urban flooding in Chester County. At the Philadelphia International Airport, 0.56 inches of rain fell within an hour between 2 a.m. and 3 a.m. EST on the 2nd. The East Branch of the Brandywine Creek at Downingtown was above its 7 foot flood stage from 5 a.m. through 830 a.m. EST on the 2nd. It crested at 7.2 feet at 630 a.m. EST on the 2nd. Farther downstream along the main stem of the Brandywine, the intersection of Pennsylvania State Routes 100 and 926 along the Birmingham/Pocopson Townships border was closed due to the creek's flooding. During the late afternoon and early evening of the 2nd, some flooding occurred along the Schuylkill River. No serious injuries or damage were reported. Storm totals included 2.52 inches in Honeybrook and 2.22 inches in Glenmoore.
The Philadelphia radar (KDIX), 114 km away, was scanning. The volume nearest the first event began at 10:00 UTC.
1 flash flood. Local standard time, as filed.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Pennsylvania in 1996Every state in 1996This day in weather historyWarnings in Pennsylvania, December 1996
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: 5576733.