River Flood Warning 3, NWS Philadelphia/Mount Holly

Issued

Sep 3, 2026, 8:09 AM EDT (12:09 UTC)

Expired

Sep 3, 2026, 11:25 AM EDT

In force

3 hr

Issued by

NWS Philadelphia/Mount Holly

Area

Storm-based polygon

Flood severity

Minor

County Chester County, PA

The Philadelphia radar (KDIX), 108 km from the middle of the area, began a volume at 12:11 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

Written for the forecast point East Branch Brandywine Creek below Downingtown (DWNP1). The gauge peaked at 7.47 ft at Sep 3, 2026, 9:00 AM EDT.

Action stage

6 ft

Minor stage

7 ft

Moderate stage

9 ft

Major stage

11 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01480870, one reading an hour, from a day before the product to a day after it ended. Flood stages are today's.

181 
WGUS41 KPHI 031209
FLWPHI

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.

&&

PAC029-032200-
/O.NEW.KPHI.FL.W.0003.260903T1209Z-260903T2200Z/
/DWNP1.1.ER.260903T1141Z.260903T1400Z.260903T1546Z.NO/
809 AM EDT Thu Sep 3 2026

...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

&&

LAT...LON 4002 7567 3993 7561 3991 7567 4001 7574


$$

Kruzdlo

071 
WGUS81 KPHI 031525
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
1125 AM EDT Thu Sep 3 2026

...The Flood Warning is cancelled for the following rivers in
Pennsylvania...

  East Branch Brandywine Creek Below Downingtown affecting Chester
  County.

PAC029-031630-
/O.CAN.KPHI.FL.W.0003.000000T0000Z-260903T1525Z/
/DWNP1.1.ER.260903T1141Z.260903T1315Z.260903T1430Z.NO/
1125 AM EDT Thu Sep 3 2026

...FLOOD WARNING IS CANCELLED...

The Flood Warning is cancelled for
  the East Branch Brandywine Creek Below Downingtown.

* ADDITIONAL DETAILS...
  - At 11:00 AM EDT Thursday the stage was 6.6 feet.
  - Forecast...The river will continue to fall through this
    afternoon.
  - http://www.weather.gov/safety/flood


&&


All Times EDT               Fld     Observed        Forecasts (11 am)
Location                    Stg   Stg   Day/Time      Fri   Sat   Sun

East Branch Brandywine Creek
Downingtown                 7.0   6.6   Thu 11 am     3.5   MSG   MSG



&&

LAT...LON 4002 7567 3993 7561 3991 7567 4001 7574


$$

River Flood Warnings in Pennsylvania, 2026Every river flood warning in 2026

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive; the gauge from the NWS water service and the USGS.