WFO PHILADELPHIA Warnings, Watches and Advisories for Thursday, September 3, 2026

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FLOOD WARNING

BULLETIN - IMMEDIATE BROADCAST REQUESTED

Flood Warning

National Weather Service Mount Holly NJ

809 AM EDT Thu Sep 3 2026

...The National Weather Service in Mount Holly has issued a Flood

Warning for the following rivers in Pennsylvania...

East Branch Brandywine Creek Below Downingtown affecting Chester

County.

For the Brandywine Creek...including Downingtown...Minor flooding is

forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood

deaths occur in vehicles.

Additional information is available at www.weather.gov/phi.

The next statement will be issued this evening by 600 PM EDT.

...FLOOD WARNING IN EFFECT FROM THIS MORNING TO THIS EVENING...

* WHAT...Minor flooding is occurring and minor flooding is forecast.

* WHERE...East Branch Brandywine Creek below Downingtown.

* WHEN...From this morning to this afternoon.

* IMPACTS...At 8.0 feet, Dowlin Forge Road begins to flood.

* ADDITIONAL DETAILS...

- At 7:45 AM EDT Thursday the stage was 7.0 feet.

- Recent Activity...The maximum river stage in the 24 hours ending

at 7:45 AM EDT Thursday was 7.0 feet.

- Forecast...The river is expected to fall below flood stage late

this morning and continue falling to 3.5 feet tomorrow afternoon.

- Flood stage is 7.0 feet.

- Flood History...This crest compares to a previous crest of 7.2

feet on 03/01/2021.

- http://www.weather.gov/safety/flood

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