Alert archive / Pennsylvania / River Flood Warnings in 2021

River Flood Warning 3, NWS Philadelphia/Mount Holly

June 8, 2021Chester County, Pennsylvania

NWS Philadelphia/Mount Holly issued this river flood warning at Jun 8, 2021, 4:25 PM EDT for Chester County, Pennsylvania. It took effect at Jun 8, 2021, 5:52 PM EDT. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued: Jun 8, 2021, 4:25 PM EDT (20:25 UTC)
In effect from: Jun 8, 2021, 5:52 PM EDT
Expired: Jun 9, 2021, 3:18 AM EDT
In force: 9 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: Minor

County Chester County, PA

The radar

The Philadelphia radar (KDIX), 108 km from the middle of the area, began a volume at 20:27 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.

The river

Written for the forecast point East Branch Brandywine Creek below Downingtown (DWNP1). The gauge peaked at 12.30 ft at Jun 8, 2021, 10:00 PM 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.

The text

As transmitted.

884 
WGUS41 KPHI 082025
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
425 PM EDT Tue Jun 8 2021

...The National Weather Service in Mount Holly NJ 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.


PAC029-090300-
/O.NEW.KPHI.FL.W.0003.210608T2152Z-210609T0300Z/
/DWNP1.1.ER.210608T2152Z.210608T2300Z.210609T0025Z.NO/
425 PM EDT Tue Jun 8 2021

The National Weather Service in Mount Holly has issued a

* Flood Warning for
  the East Branch Brandywine Creek Below Downingtown.
* Until this evening.
* At 3:45 PM EDT Tuesday the stage was 4.8 feet.
* Flood stage is 7.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  this afternoon to a crest of 7.8 feet this evening. It will then 
  fall below flood stage this evening.
* Impact...At 6.0 feet, Open adjacent land next to the creek floods.
* Impact...At 8.0 feet, Dowlin Forge Road begins to flood.
* Flood History...This crest compares to a previous crest of 8.3 
  feet on 06/04/2003.

&&


  Fld   Observed           Forecasts (4 pm EDT)
Location                    Stg   Stg   Day/Time     Wed   Thu   Fri

East Branch Brandywine Creek
Downingtown                 7.0   4.8   Tue 3 pm EDT 3.8   MSG   MSG





&&

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

$$

Iovino

6 follow-up statements

812 
WGUS81 KPHI 082200
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
600 PM EDT Tue Jun 8 2021

...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, Chadds Ford, 
Wilmington...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.


PAC029-090300-
/O.CON.KPHI.FL.W.0003.000000T0000Z-210609T0300Z/
/DWNP1.1.ER.210608T2101Z.210608T2200Z.210609T0112Z.NO/
600 PM EDT Tue Jun 8 2021

...The Flood Warning remains in effect...

The Flood Warning continues for
  the East Branch Brandywine Creek Below Downingtown.
* Until this evening.
* At 5:45 PM EDT Tuesday the stage was 8.4 feet.
* Flood stage is 7.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 5:45 PM EDT Tuesday was 8.4 feet.
* Forecast...The river is expected to crest around 8.9 feet, then 
  fall below flood stage late this evening and continue falling to 
  3.8 feet early Thursday morning.
* Impact...At 6.0 feet, Open adjacent land next to the creek floods.
* Impact...At 8.0 feet, Dowlin Forge Road begins to flood.
* Impact...At 9.0 feet, High water on the Brandywine sends backwater 
  up Beaver Creek. Beaver Creek floods inundating parks and the 
  Downingtown Little League fields.
* Flood History...This crest compares to a previous crest of 9.2 
  feet on 10/23/2003.

&&


  Fld   Observed           Forecasts (6 pm EDT)
Location                    Stg   Stg   Day/Time     Wed   Thu   Fri

East Branch Brandywine Creek
Downingtown                 7.0   8.4   Tue 5 pm EDT 3.8   MSG   MSG





&&

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

$$

Iovino

377 
WGUS41 KPHI 082306
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
706 PM EDT Tue Jun 8 2021

...Forecast flooding changed from Minor to Moderate severity and 
increased in duration for the following rivers in Pennsylvania...

  East Branch Brandywine Creek Below Downingtown affecting Chester 
  County.

For the Brandywine Creek...including Downingtown, Chadds Ford, 
Wilmington...Moderate flooding is forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

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


PAC029-090600-
/O.EXT.KPHI.FL.W.0003.000000T0000Z-210609T0600Z/
/DWNP1.2.ER.210608T2101Z.210609T0000Z.210609T0258Z.NO/
706 PM EDT Tue Jun 8 2021

...Forecast flooding increased from Minor to Moderate severity and 
increased in duration until just after midnight tonight...

The Flood Warning continues for
  the East Branch Brandywine Creek Below Downingtown.
* Until late tonight.
* At 6:46 PM EDT Tuesday the stage was 9.4 feet.
* Flood stage is 7.0 feet.
* Moderate flooding is occurring and moderate flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 6:46 PM EDT Tuesday was 9.4 feet.
* Forecast...The river is expected to rise to a crest of 9.9 feet 
  this evening. It will then fall below flood stage late this 
  evening.
* Impact...At 6.0 feet, Open adjacent land next to the creek floods.
* Impact...At 8.0 feet, Dowlin Forge Road begins to flood.
* Impact...At 9.0 feet, High water on the Brandywine sends backwater 
  up Beaver Creek. Beaver Creek floods inundating parks and the 
  Downingtown Little League fields.
* Flood History...This crest compares to a previous crest of 9.9 
  feet on 03/09/1995.

&&


  Fld   Observed           Forecasts (7 pm EDT)
Location                    Stg   Stg   Day/Time     Wed   Thu   Fri

East Branch Brandywine Creek
Downingtown                 7.0   9.4   Tue 6 pm EDT 3.8   MSG   MSG





&&

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

$$

Iovino

066 
WGUS41 KPHI 090010
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
810 PM EDT Tue Jun 8 2021

...Forecast flooding changed from Moderate to Major severity and 
increased in duration for the following rivers in Pennsylvania...

  East Branch Brandywine Creek Below Downingtown affecting Chester 
  County.

For the Brandywine Creek...including Downingtown and Chadds Ford, 
flooding is forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

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


PAC029-091200-
/O.EXT.KPHI.FL.W.0003.000000T0000Z-210609T1200Z/
/DWNP1.3.ER.210608T2101Z.210609T0100Z.210609T0611Z.NO/
810 PM EDT Tue Jun 8 2021

...Forecast flooding increased from Moderate to Major severity and 
increased in duration until tomorrow morning...

The Flood Warning continues for
  the East Branch Brandywine Creek Below Downingtown.
* Until Wednesday morning.
* At 7:46 PM EDT Tuesday the stage was 10.7 feet.
* Flood stage is 7.0 feet.
* Moderate flooding is occurring and major flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 7:46 PM EDT Tuesday was 10.7 feet.
* Forecast...The river is expected to rise to a crest of 11.3 feet 
  late this evening. It will then fall below flood stage overnight.
* Impact...At 9.0 feet, High water on the Brandywine sends backwater 
  up Beaver Creek. Beaver Creek floods inundating parks and the 
  Downingtown Little League fields.
* Impact...At 11.0 feet, Jefferson Avenue in Downingtown floods. 
  Business Route 30 and Pennsylvania Avenue also flood.
* Impact...At 12.0 feet, Residential basements flood along Jefferson 
  Avenue.
* Flood History...This crest compares to a previous crest of 11.1 
  feet on 01/26/1978.

&&


  Fld   Observed           Forecasts (8 pm EDT)
Location                    Stg   Stg   Day/Time     Wed   Thu   Fri

East Branch Brandywine Creek
Downingtown                 7.0   10.7  Tue 7 pm EDT 3.9   MSG   MSG





&&

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

$$

Iovino

788 
WGUS81 KPHI 090057
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
857 PM EDT Tue Jun 8 2021

...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 and Chadds Ford,  
flooding is forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

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


PAC029-091200-
/O.CON.KPHI.FL.W.0003.000000T0000Z-210609T1200Z/
/DWNP1.3.ER.210608T2101Z.210609T0200Z.210609T0918Z.NO/
857 PM EDT Tue Jun 8 2021

...The Flood Warning remains in effect...

The Flood Warning continues for
  the East Branch Brandywine Creek Below Downingtown.
* Until Wednesday morning.
* At 8:45 PM EDT Tuesday the stage was 12.1 feet.
* Flood stage is 7.0 feet.
* Major flooding is occurring and major flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 8:45 PM EDT Tuesday was 12.1 feet.
* Forecast...The river is expected to rise to a crest of 13.2 feet 
  late this evening. It will then fall below flood stage late 
  tonight.
* Impact...At 11.0 feet, Jefferson Avenue in Downingtown floods. 
  Business Route 30 and Pennsylvania Avenue also flood.
* Impact...At 12.0 feet, Residential basements flood along Jefferson 
  Avenue.
* Impact...At 13.0 feet, Route 30 in Downingtown is closed due to 
  flooding. Route 322 (Brandywine Avenue) is closed between Business 
  30 and Boot Road due to flooding. Businesses along business Route 
  30, between the creek and Downing Avenue, take on water.
* Flood History...This crest compares to a previous crest of 13.2 
  feet on 06/20/2003.

&&


  Fld   Observed           Forecasts (9 pm EDT)
Location                    Stg   Stg   Day/Time     Wed   Thu   Fri

East Branch Brandywine Creek
Downingtown                 7.0   12.1  Tue 8 pm EDT 3.8   MSG   MSG





&&

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

$$

Iovino

596 
WGUS81 KPHI 090541
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
141 AM EDT Wed Jun 9 2021

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

  East Branch Brandywine Creek Below Downingtown affecting Chester 
  County.

For the Brandywine Creek...including Downingtown, Chadds Ford, 
Wilmington...Minor flooding is forecast.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Motorists should not attempt to drive around barricades or drive 
cars through flooded areas.

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


PAC029-091615-
/O.EXT.KPHI.FL.W.0003.000000T0000Z-210609T1608Z/
/DWNP1.3.ER.210608T2101Z.210609T0130Z.210609T1008Z.NO/
141 AM EDT Wed Jun 9 2021

...The Flood Warning is now in effect until this afternoon...

The Flood Warning continues for
  the East Branch Brandywine Creek Below Downingtown.
* Until this afternoon.
* At 1:01 AM EDT Wednesday the stage was 8.8 feet.
* Flood stage is 7.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 1:01 AM EDT Wednesday was 12.4 feet.
* Forecast...The river is expected to fall below flood stage this 
  morning and continue falling to 3.8 feet just after midnight 
  tonight.
* Impact...At 6.0 feet, Open adjacent land next to the creek floods.
* Impact...At 8.0 feet, Dowlin Forge Road begins to flood.
* Impact...At 9.0 feet, High water on the Brandywine sends backwater 
  up Beaver Creek. Beaver Creek floods inundating parks and the 
  Downingtown Little League fields.

&&


  Fld   Observed           Forecasts (2 am EDT)
Location                    Stg   Stg   Day/Time     Thu   Fri   Sat

East Branch Brandywine Creek
Downingtown                 7.0   8.8   Wed 1 am EDT 3.8   MSG   MSG





&&

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

$$

Robertson

163 
WGUS81 KPHI 090718
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
318 AM EDT Wed Jun 9 2021

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

  East Branch Brandywine Creek Below Downingtown affecting Chester 
  County.

PAC029-090830-
/O.CAN.KPHI.FL.W.0003.000000T0000Z-210609T0718Z/
/DWNP1.3.ER.210608T2101Z.210609T0130Z.210609T0552Z.NO/
318 AM EDT Wed Jun 9 2021

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

The Flood Warning is cancelled for
  the East Branch Brandywine Creek Below Downingtown.
* At 2:45 AM EDT Wednesday the stage was 5.9 feet.
* Flood stage is 7.0 feet.
* Forecast...The river is expected to fall to 3.7 feet late tomorrow 
  morning.

&&


  Fld   Observed           Forecasts (3 am EDT)
Location                    Stg   Stg   Day/Time     Thu   Fri   Sat

East Branch Brandywine Creek
Downingtown                 7.0   5.9   Wed 2 am EDT 3.7   MSG   MSG





&&

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

$$

Robertson

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 8, 11:54 AM EDT	Areal Flood Advisory	PHI	Monroe	2 hr
Jun 8, 12:34 PM EDT	Flash Flood Warning	PHI	Monroe	2 hr
Jun 8, 12:40 PM EDT	Special Weather Statement	PHI	Monroe	35 min
Jun 8, 1:09 PM EDT	Special Weather Statement	PHI	Monroe	21 min
Jun 8, 1:17 PM EDT	Special Weather Statement	PHI	Chester	13 min
Jun 8, 1:18 PM EDT	Areal Flood Advisory	PHI	Chester, Delaware, Montgomery, Philadelphia	3 hr
Jun 8, 1:24 PM EDT	Special Weather Statement	PHI	Delaware	21 min
Jun 8, 1:27 PM EDT	Areal Flood Advisory	PHI	Carbon, Lehigh, Monroe, Northampton	3 hr
Jun 8, 1:35 PM EDT	Flash Flood Warning	PHI	Chester, Delaware, Montgomery	5 hr
Jun 8, 2:07 PM EDT	Special Weather Statement	PHI	Bucks	23 min
Jun 8, 2:19 PM EDT	Areal Flood Advisory	PHI	Bucks	2 hr
Jun 8, 2:43 PM EDT	Special Weather Statement	PHI	Montgomery	32 min
Jun 8, 3:15 PM EDT	Special Weather Statement	PHI	Chester	30 min
Jun 8, 3:21 PM EDT	Flash Flood Warning	PHI	Chester, Montgomery	3 hr
Jun 8, 3:43 PM EDT	Special Weather Statement	PHI	Chester	32 min
Jun 8, 4:20 PM EDT	Special Weather Statement	PHI	Chester	25 min
Jun 8, 6:21 PM EDT	Areal Flood Warning	PHI	Chester, Delaware	15 hr
Jun 8, 7:14 PM EDT	River Flood Warning	PHI	Chester, Delaware	18 hr

Nearby

River Flood Warnings in Pennsylvania, 2021 Every river flood warning in 2021

Sources

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.