Flood Warning issued October 11 at 8:56PM EDT until October 12 at 3:00AM EDT by NWS Mount Holly NJ

Official severe-weather alerts, warning areas, and disaster updates.

expired · active · official-source

...The Flood Warning continues 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. * WHAT...Minor flooding is occurring and minor flooding is forecast. * WHERE...East Branch Brandywine Creek below Downingtown. * WHEN...Until late tonight. * IMPACTS...At 8.0 feet, Dowlin Forge Road begins to flood. * ADDITIONAL DETAILS... - At 8:30 PM EDT Sunday the stage was 7.2 feet. - Recent Activity...The maximum river stage in the 24 hours ending at 8:30 PM EDT Sunday was 7.2 feet. - Forecast...The river will rise to a crest of 7.3 feet late this evening. It will then fall below flood stage just after midnight tonight. - 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 Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Additional information is available at www.weather.gov/phi. The next statement will be issued late tonight by 300 AM EDT.

Event time
Source last updated
Current version retrieved
Provider
NWS — active weather alerts (Storm)
Location
PA, US
Severity
Severe
area
Chester, PA
event
Flood Warning
onset
2026-10-11T20:56:00-04:00
states
["PA"]
urgency
Immediate
certainty
Observed
effective
2026-10-11T20:56:00-04:00
message id
urn:oid:2.49.0.1.840.0.1a884335aa5b6e895ed3e17b41680430ed94a272.001.1
references
["urn:oid:2.49.0.1.840.0.56bbbe621e7b247fbfa71785daec5a165c6783c4.001.1"]
instruction
Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Be especially cautious at night when it is harder to recognize the dangers of flooding. Additional information is available at www.weather.gov/phi. The next statement will be issued late tonight by 300 AM EDT.
message type
Update
freshness minutes
60
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