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Coatesville, PA Severe Weather Alertstar_ratehome

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Personal Weather Station
Location: Coatesville, PA
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Flash Flood Warning
Issued: 12:39 AM Aug. 21, 2026 – National Weather Service
...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 945 PM EDT THIS
EVENING FOR NORTHERN NEW CASTLE, NORTHWESTERN CAMDEN, NORTHWESTERN
GLOUCESTER, NORTHWESTERN SALEM, SOUTHEASTERN CHESTER, DELAWARE,
SOUTHEASTERN MONTGOMERY AND PHILADELPHIA COUNTIES...

At 839 PM EDT, trained weather spotters reported flash flooding with
water rescues around Delaware County. Between 1 and 2.5 inches of
rain have fallen. Flooding impacts will continue, but no additional
rainfall is expected. Flash flooding is already occurring.

HAZARD...Flash flooding caused by heavy rain.

SOURCE...Trained spotters reported.

IMPACT...Flash flooding of small creeks and streams, urban areas,
highways, streets and underpasses as well as other poor
drainage and low-lying areas.

Some locations that will experience flash flooding include...
Philadelphia, Camden, Wilmington, Newark, West Chester, Gloucester
City, Chester, West Deptford, Yeadon and Westtown.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood
deaths occur in vehicles.

&&


FLASH FLOOD...OBSERVED

Flood Watch
Issued: 4:55 PM Aug. 20, 2026 – National Weather Service
...FLOOD WATCH REMAINS IN EFFECT THROUGH LATE TONIGHT...

* WHAT...Flash flooding caused by excessive rainfall continues to be
possible.

* WHERE...Portions of northern Delaware, including the following
area, New Castle, New Jersey, including the following areas,
Atlantic, Camden, Coastal Atlantic, Coastal Ocean, Cumberland,
Eastern Monmouth, Gloucester, Hunterdon, Mercer, Middlesex,
Morris, Northwestern Burlington, Ocean, Salem, Somerset,
Southeastern Burlington and Western Monmouth, and southeast
Pennsylvania, including the following areas, Delaware, Eastern
Chester, Eastern Montgomery, Lower Bucks, Philadelphia, Upper
Bucks, Western Chester and Western Montgomery.

* WHEN...Through late tonight.

* IMPACTS...Flooding may occur in poor drainage and urban areas.
Creeks and streams may rise out of their banks. Excessive runoff
may result in flooding of rivers, creeks, streams, and other
low-lying and flood-prone locations.

* ADDITIONAL DETAILS...
- Showers and a thundertorms are expected through this evening.
Rainfall rates of 1 to 3 inches per hour are possible in
stronger storms. Total rainfall amounts of 1 to 2 inches are
expected with some areas experiencing 3 to 5 inches of
rainfall which could cause flash flooding.
- http://www.weather.gov/safety/flood

PRECAUTIONARY/PREPAREDNESS ACTIONS...

You should monitor later forecasts and be prepared to take action
should Flash Flood Warnings be issued.

&&

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