Alert archive / Pennsylvania / River Flood Warnings in 2021

River Flood Warning 4, NWS Philadelphia/Mount Holly

June 8, 2021Chester County, Delaware County, Pennsylvania

NWS Philadelphia/Mount Holly issued this river flood warning at Jun 8, 2021, 7:14 PM EDT for Chester County, Delaware County, Pennsylvania. It took effect at Jun 8, 2021, 10:00 PM EDT. It was in force for 15 hr.

The area

The outline as issued.

The facts

Issued: Jun 8, 2021, 7:14 PM EDT (23:14 UTC)
In effect from: Jun 8, 2021, 10:00 PM EDT
Expired: Jun 9, 2021, 12:53 PM EDT
In force: 15 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: Minor

Counties Chester County, PA, Delaware County, PA

The radar

The Philadelphia radar (KDIX), 102 km from the middle of the area, began a volume at 23:18 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 Brandywine Creek at Chadds Ford (CDFP1). The gauge peaked at 11.80 ft at Jun 9, 2021, 6:00 AM EDT.

Action stage: 8 ft
Minor stage: 9 ft
Moderate stage: 11 ft
Major stage: 13 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01481000, 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.

095 
WGUS41 KPHI 082314
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
714 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...

  Brandywine Creek At Chadds Ford affecting Delaware and Chester 
  Counties.

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.


PAC029-045-091115-
/O.NEW.KPHI.FL.W.0004.210609T0400Z-210609T1700Z/
/CDFP1.1.ER.210609T0400Z.210609T0600Z.210609T1342Z.NO/
714 PM EDT Tue Jun 8 2021

The National Weather Service in Mount Holly has issued a

* Flood Warning for
  the Brandywine Creek At Chadds Ford.
* From late tonight to Wednesday afternoon.
* At 6:30 PM EDT Tuesday the stage was 7.4 feet.
* Flood stage is 9.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage just 
  after midnight tonight to a crest of 9.9 feet just after midnight 
  tonight. It will then fall below flood stage late tomorrow morning.
* Impact...At 8.0 feet, Open adjacent land next to the creek floods.
* Impact...At 10.0 feet, The intersections of Creek Road and Route 
  926 near Pocopson floods upstream of Chadds Ford.
* Flood History...This crest compares to a previous crest of 10.0 
  feet on 02/23/2003.

&&


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

Brandywine Creek
Chadds Ford     9.0   7.4   Tue 6 pm EDT 5.9   2.8   MSG          





&&

LAT...LON 3993 7561 3982 7553 3979 7560 3991 7567

$$

Iovino

5 follow-up statements

353 
WGUS81 KPHI 090150
FLSPHI

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

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

  Brandywine Creek At Chadds Ford affecting Delaware and Chester 
  Counties.

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.


PAC029-045-091400-
/O.EXT.KPHI.FL.W.0004.210609T0200Z-210609T2200Z/
/CDFP1.1.ER.210609T0200Z.210609T0800Z.210609T1605Z.NO/
950 PM EDT Tue Jun 8 2021

...The Flood Warning is now in effect until tomorrow evening...

The Flood Warning continues for
  the Brandywine Creek At Chadds Ford.
* Until Wednesday evening.
* At 9:30 PM EDT Tuesday the stage was 8.7 feet.
* Flood stage is 9.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise above flood stage late 
  this evening to a crest of 10.6 feet late tonight. It will then 
  fall below flood stage on Wednesday afternoon.
* Impact...At 8.0 feet, Open adjacent land next to the creek floods.
* Impact...At 10.0 feet, The intersections of Creek Road and Route 
  926 near Pocopson floods upstream of Chadds Ford.
* Flood History...This crest compares to a previous crest of 10.5 
  feet on 03/10/1994.

&&


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

Brandywine Creek
Chadds Ford     9.0   8.7   Tue 9 pm EDT 5.5   3.9   6.3          





&&

LAT...LON 3993 7561 3982 7553 3979 7560 3991 7567

$$

Iovino

164 
WGUS41 KPHI 090718
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
318 AM EDT Wed Jun 9 2021

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

  Brandywine Creek At Chadds Ford affecting Delaware and Chester 
  Counties.

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.


PAC029-045-091930-
/O.EXT.KPHI.FL.W.0004.000000T0000Z-210609T2100Z/
/CDFP1.2.ER.210609T0245Z.210609T0900Z.210609T1500Z.NO/
318 AM EDT Wed Jun 9 2021

...Forecast flooding increased from Minor to Moderate severity and 
increased in duration until late this afternoon...

The Flood Warning continues for
  the Brandywine Creek At Chadds Ford.
* Until this afternoon.
* At 2:30 AM EDT Wednesday the stage was 10.5 feet.
* Flood stage is 9.0 feet.
* Minor flooding is occurring and moderate flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 2:30 AM EDT Wednesday was 10.5 feet.
* Forecast...The river is expected to rise to a crest of 11.2 feet 
  early this morning. It will then fall below flood stage late this 
  morning.
* Impact...At 8.0 feet, Open adjacent land next to the creek floods.
* Impact...At 10.0 feet, The intersections of Creek Road and Route 
  926 near Pocopson floods upstream of Chadds Ford.
* Impact...At 11.8 feet, Brandywine River Museum begins to take on 
  water. Route 1 also takes on water.
* Impact...At 12.0 feet, Businesses upstream of the gage begin to 
  flood.
* Flood History...This crest compares to a previous crest of 11.1 
  feet on 02/07/2004.

&&


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

Brandywine Creek
Chadds Ford     9.0   10.5  Wed 2 am EDT 5.1   4.8   7.3          





&&

LAT...LON 3993 7561 3982 7553 3979 7560 3991 7567

$$

Robertson

036 
WGUS81 KPHI 091210
FLSPHI

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

...The Flood Warning continues for the following rivers in 
Pennsylvania...

  Brandywine Creek At Chadds Ford affecting Delaware and Chester 
  Counties.

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.


PAC029-045-092100-
/O.CON.KPHI.FL.W.0004.000000T0000Z-210609T2100Z/
/CDFP1.2.ER.210609T0245Z.210609T1015Z.210609T1500Z.NO/
810 AM EDT Wed Jun 9 2021

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

The Flood Warning continues for
  the Brandywine Creek At Chadds Ford.
* Until this afternoon.
* At 7:30 AM EDT Wednesday the stage was 11.6 feet.
* Flood stage is 9.0 feet.
* Moderate flooding is occurring.
* Recent Activity...The maximum river stage in the 24 hours ending 
  at 7:30 AM EDT Wednesday was 11.8 feet.
* Forecast...The river is expected to fall below flood stage late 
  this morning and continue falling to 7.3 feet early Saturday 
  morning.
* Impact...At 8.0 feet, Open adjacent land next to the creek floods.
* Impact...At 10.0 feet, The intersections of Creek Road and Route 
  926 near Pocopson floods upstream of Chadds Ford.
* Impact...At 11.8 feet, Brandywine River Museum begins to take on 
  water. Route 1 also takes on water.
* Flood History...This crest compares to a previous crest of 11.6 
  feet on 12/05/1993.

&&


                Fld   Observed           Forecasts (8 am EDT)     
Location        Stg   Stg   Day/Time     Thu   Fri   Sat          

Brandywine Creek
Chadds Ford     9.0   11.6  Wed 7 am EDT 4.8   5.2   MSG          





&&

LAT...LON 3993 7561 3982 7553 3979 7560 3991 7567

$$

Deal

550 
WGUS81 KPHI 091405
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
1005 AM EDT Wed Jun 9 2021

...The Flood Warning continues for the following rivers in 
Pennsylvania...

  Brandywine Creek At Chadds Ford affecting Delaware and Chester 
  Counties.

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

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.


PAC029-045-092100-
/O.CON.KPHI.FL.W.0004.000000T0000Z-210609T2100Z/
/CDFP1.1.ER.210609T0245Z.210609T1015Z.210609T1500Z.NO/
1005 AM EDT Wed Jun 9 2021

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

The Flood Warning continues for
  the Brandywine Creek At Chadds Ford.
* Until this afternoon.
* At 9:30 AM EDT Wednesday the stage was 10.9 feet.
* Flood stage is 9.0 feet.
* Minor flooding is occurring.
* Forecast...The river is expected to fall below flood stage late 
  this morning and continue falling to 7.3 feet early Saturday 
  morning.
* Impact...At 8.0 feet, Open adjacent land next to the creek floods.
* Impact...At 10.0 feet, The intersections of Creek Road and Route 
  926 near Pocopson floods upstream of Chadds Ford.

&&


                Fld   Observed           Forecasts (8 am EDT)     
Location        Stg   Stg   Day/Time     Thu   Fri   Sat          

Brandywine Creek
Chadds Ford     9.0   10.9  Wed 9 am EDT 4.8   5.2   MSG          





&&

LAT...LON 3993 7561 3982 7553 3979 7560 3991 7567

$$

Fitzsimmons

380 
WGUS81 KPHI 091653
FLSPHI

Flood Statement
National Weather Service Mount Holly NJ
1253 PM EDT Wed Jun 9 2021

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

  Brandywine Creek At Chadds Ford affecting Delaware and Chester 
  Counties.

PAC029-045-091800-
/O.CAN.KPHI.FL.W.0004.000000T0000Z-210609T1653Z/
/CDFP1.1.ER.210609T0245Z.210609T1015Z.210609T1553Z.NO/
1253 PM EDT Wed Jun 9 2021

...The Flood Warning for the Brandywine Creek At Chadds Ford has 
been cancelled...

The Flood Warning is cancelled for
  the Brandywine Creek At Chadds Ford.
* At 12:30 PM EDT Wednesday the stage was 8.0 feet.
* Flood stage is 9.0 feet.
* Forecast...The river will fall to 7.0 feet and then begin rising 
  this evening.

&&


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

Brandywine Creek
Chadds Ford     9.0   8.0   Wed 12 pm ED 6.3   4.1   MSG          





&&

LAT...LON 3993 7561 3982 7553 3979 7560 3991 7567

$$

Gorse

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, 4:25 PM EDT	River Flood Warning	PHI	Chester	11 hr
Jun 8, 6:21 PM EDT	Areal Flood Warning	PHI	Chester, Delaware	15 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.