Alert archive / Pennsylvania / River Flood Warnings in 2018

River Flood Warning 35, NWS Philadelphia/Mount Holly

August 13, 2018Chester County, Delaware County, Pennsylvania

NWS Philadelphia/Mount Holly issued this river flood warning at Aug 13, 2018, 11:05 AM EDT for Chester County, Delaware County, Pennsylvania. It took effect at Aug 13, 2018, 4:00 PM EDT. It was in force for 25 hr.

The area

The outline as issued.

The facts

Issued: Aug 13, 2018, 11:05 AM EDT (15:05 UTC)
In effect from: Aug 13, 2018, 4:00 PM EDT
Expired: Aug 14, 2018, 5:00 PM EDT
In force: 25 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 15:05 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 11.35 ft at Aug 13, 2018, 10:00 PM 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.

363 
WGUS41 KPHI 131505
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mt Holly NJ
1105 AM EDT Mon Aug 13 2018

...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 Chester and Delaware Counties

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...Do not attempt to drive through flooded areas. The water may be
deeper than you think.

&&

PAC029-045-132105-
/O.NEW.KPHI.FL.W.0035.180813T2100Z-180814T2100Z/
/CDFP1.1.ER.180813T2100Z.180814T1200Z.180814T1500Z.NO/
1105 AM EDT Mon Aug 13 2018

The National Weather Service in Mount Holly NJ has issued a 

* Flood Warning for 
  The Brandywine Creek at Chadds Ford.
* from this afternoon to Tuesday afternoon...Or until the warning is cancelled.
* At 10:30 AM Monday the stage was 7.2 feet.
* Flood stage is 9.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage by late this afternoon and continue to rise 
  to near 10.6 feet by tomorrow morning.the river will fall below flood stage by
  late tomorrow morning.
* 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 Mar 10 
  1994.  

 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Brandywine Creek
  Chadds Ford            9.0    7.19  Mon 10 AM   10.6    Tue 8 AM 
 
&&
 
LAT...LON 3993 7561 3982 7553 3979 7560 3991 7567
                                      

$$

5 follow-up statements

145 
WGUS81 KPHI 132002
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
402 PM EDT Mon Aug 13 2018

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

   Brandywine Creek At Chadds Ford affecting Chester and
   Delaware Counties

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...Do not attempt to drive through flooded areas.
The water may be deeper than you think.

&&

PAC029-045-140602-
/O.EXT.KPHI.FL.W.0035.180813T2000Z-180814T0900Z/
/CDFP1.1.ER.180813T1815Z.180814T0000Z.180814T0300Z.NO/
402 PM EDT Mon Aug 13 2018

The Flood Warning continues for
  The Brandywine Creek at Chadds Ford.
* Until late tonight...or until the warning is cancelled.
* At 3:45 PM Monday the stage was 8.8 feet.
* Flood stage is 9.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage late this afternoon and 
  continue to rise to near 9.9 feet this evening. The river will 
  fall below flood stage tonight.
* 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 Feb 23 2003.  
 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG   DAY TIME     CREST

Brandywine Creek
  Chadds Ford            9.0    8.81  Mon 4 PM     9.9    Mon 8 PM 
 
&&
 
LAT...LON 3993 7561 3982 7553 3979 7560 3991 7567
                                      

$$

Kruzdlo

256 
WGUS41 KPHI 140023
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mt Holly NJ
823 PM EDT Mon Aug 13 2018

...Forecast flooding changed from Minor to Moderate severity for
   the following rivers in Pennsylvania...
   
   Brandywine Creek At Chadds Ford affecting Chester and Delaware
   Counties

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...Do not attempt to drive through flooded areas. 
The water may be deeper than you think.

&&

PAC029-045-140622-
/O.EXT.KPHI.FL.W.0035.000000T0000Z-180814T2225Z/
/CDFP1.2.ER.180813T1815Z.180814T0600Z.180814T1625Z.NO/
823 PM EDT Mon Aug 13 2018

...Forecast flooding increased from Minor to Moderate severity...

The Flood Warning continues for 
 The Brandywine Creek At Chadds Ford.
* Until Tuesday evening...or until the warning is cancelled.
* At 7:30 PM Monday the stage was 10.4 feet.
* Flood stage is 9.0 feet.
* Minor flooding is occurring and Moderate flooding is forecast.
* Forecast...The river will continue rising to near 11.5 feet tonight. 
  The river will fall below flood stage early tomorrow afternoon.
* 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 Dec 5 1993.  
 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG   DAY TIME     CREST

Brandywine Creek
  Chadds Ford            9.0   10.41  Mon 7 PM     11.5    Tue 2 AM 
 
&&
 
LAT...LON 3993 7561 3982 7553 3979 7560 3991 7567
                                      

$$

Kruzdlo

408 
WGUS41 KPHI 140546
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
146 AM EDT Tue Aug 14 2018

...The National Weather Service in Mount Holly NJ has issued a
Flood Warning for the Brandywine Creek from around Chadds Ford
to the Wilmington area...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...Do not attempt to drive through flooded areas.
The water may be deeper than you think it is.

&&

PAC029-045-141145-
/O.EXT.KPHI.FL.W.0035.000000T0000Z-180814T2120Z/
/CDFP1.2.ER.180813T1815Z.180814T0145Z.180814T1520Z.NO/
146 AM EDT Tue Aug 14 2018

The Flood Warning continues for 
 The Brandywine Creek At Chadds Ford.
* Until late this morning or until the warning is cancelled.
* At 12:30 AM, the river level was 10.86 feet.
* Flood stage is 9.0 feet.
* Minor flooding is occurring and is forecast to continue.
* Forecast...The river level will continue to fall and it should
  be back below flood stage late this morning.
* Impact...At 10.0 feet, the intersections of Creek Road and
  Route 926 near Pocopson floods.
 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Brandywine Creek
  Chadds Ford           9.0   10.86  Tue 1230 AM   Crested 
 
&&
 
LAT...LON 3993 7561 3982 7553 3979 7560 3991 7567
                                      

$$

DEC003-141145-
/O.NEW.KPHI.FL.W.0041.180814T0546Z-180814T1400Z/
/WMND1.1.ER.180814T0503Z.180814T0600Z.180814T0800Z.UU/
146 AM EDT Tue Aug 14 2018

The National Weather Service in Mount Holly NJ has issued a 

* Flood Warning for 
  The Brandywine Creek at Wilmington.
* For this morning or until the warning is cancelled.
* At 1:15 AM, the river level was 16.53 feet.
* Flood stage is 16.5 feet.
* Minor flooding is occurring and is forecast to continue.
* Impact...At 16.5 feet...North Park Drive, west of North Market
  Street, in Brandywine State Park is subject to flooding and
  closures.
* Flood history...This crest compares to a previous crest of 16.7
  feet on Sep 8 2011.

&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Brandywine Creek
  Wilmington            16.5   16.53  Tue 115 AM   16.6    Tue 2 AM 
 
&&
 
LAT...LON 3982 7553 3975 7549 3969 7552 3979 7560                        

$$

Iovino

322 
WGUS81 KPHI 140754
FLSPHI
Flood Statement
National Weather Service Mount Holly NJ
354 AM EDT Tue Aug 14 2018

...The Flood Warning continues for the Brandywine Creek from
around Chadds Ford down to the Wilmington area...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...Do not attempt to drive through flooded areas.
The water may be deeper than you think it is.

&&

PAC029-045-141754-
/O.EXT.KPHI.FL.W.0035.000000T0000Z-180814T1800Z/
/CDFP1.2.ER.180813T1815Z.180814T0145Z.180814T1200Z.NO/
354 AM EDT Tue Aug 14 2018

The Flood Warning continues for
  The Brandywine Creek at Chadds Ford.
* At 3:30 AM, the river level was 9.62 feet.
* Flood stage is 9.0 feet.
* Forecast...The river will continue to fall and it should 
  return back below flood stage this morning.
 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Brandywine Creek
  Chadds Ford            9.0   9.62  Tue 330 AM    Crested 
 
&&
 
LAT...LON 3993 7561 3982 7553 3979 7560 3991 7567                                     

$$

DEC003-141724-
/O.EXT.KPHI.FL.W.0041.000000T0000Z-180814T1724Z/
/WMND1.1.ER.180814T0503Z.180814T0900Z.180814T1124Z.UU/
354 AM EDT Tue Aug 14 2018

The Flood Warning continues for
  The Brandywine Creek at Wilmington.
* At 3:15 AM, the river level was 16.57 feet.
* Flood stage is 16.5 feet.
* Minor flooding is occurring and is forecast to continue.
* Forecast...The river level will continue rising to near 16.9
  feet before falling back below flood stage this morning.
* Impact...At 17.0 feet...Some flooding begins in the historic
  Breck's Mill area in Montchanin.
* Flood history...This crest compares to a previous crest of
  16.9 feet on Oct 1 2010.
  
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Brandywine Creek
  Wilmington            16.5   16.57  Tue 315 AM   16.9   Tue 5 AM 
 
&&
 
LAT...LON 3982 7553 3975 7549 3969 7552 3979 7560
                                      
$$

Iovino

195 
WGUS81 KPHI 141056
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
656 AM EDT Tue Aug 14 2018

...The Flood Warning is cancelled for the Brandywine Creek...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...Do not attempt to drive through flooded areas.
The water may be deeper than you think it is.

&&

PAC029-045-141126-
/O.CAN.KPHI.FL.W.0035.000000T0000Z-180814T1800Z/
/CDFP1.2.ER.180813T1815Z.180814T0145Z.180814T0831Z.NO/
656 AM EDT Tue Aug 14 2018

The Flood Warning is cancelled for
  The Brandywine Creek at Chadds Ford.
* At 6:30 AM, the creek level was 6.5 feet.
* Flood stage is 9.0 feet.
* The creek fell below flood stage at 4:31 AM.
* Forecast...The creek level will continue to fall.
 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Brandywine Creek
  Chadds Ford            9.0    6.50  Tue 630 AM   Crested 
 
&&
 
LAT...LON 3993 7561 3982 7553 3979 7560 3991 7567
                                      

$$

DEC003-141126-
/O.CAN.KPHI.FL.W.0041.000000T0000Z-180814T1724Z/
/WMND1.1.ER.180814T0503Z.180814T0615Z.180814T0732Z.UU/
656 AM EDT Tue Aug 14 2018

The Flood Warning is cancelled for
  The Brandywine Creek at Wilmington.
* At 6:15 AM, the creek level was 15.99 feet.
* Flood stage is 16.5 feet.
* The creek fell below flood stage at 3:32 AM.
* Forecast...The creek level will continue to fall.
 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Brandywine Creek
  Wilmington             16.5   15.99  Tue 615 AM  Crested
 
&&
 
LAT...LON 3982 7553 3975 7549 3969 7552 3979 7560
                                      

$$

Iovino

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 12, 10:08 PM EDT	Flash Flood Watch	PHI	Berks, Bucks, Carbon, Chester, Delaware, Lehigh and 4 more	24 hr
Aug 13, 4:42 AM EDT	Areal Flood Advisory	PHI	Berks	4 hr
Aug 13, 5:12 AM EDT	Areal Flood Advisory	PHI	Chester	103 min
Aug 13, 6:24 AM EDT	Areal Flood Advisory	PHI	Berks, Chester, Delaware, Montgomery	4 hr
Aug 13, 6:50 AM EDT	Flash Flood Warning	PHI	Berks, Chester, Delaware, Montgomery	6 hr
Aug 13, 8:03 AM EDT	Areal Flood Advisory	PHI	Delaware, Montgomery, Philadelphia	4 hr
Aug 13, 8:43 AM EDT	Flash Flood Warning	PHI	Bucks, Delaware, Lehigh, Montgomery, Northampton, Philadelphia	4 hr
Aug 13, 9:21 AM EDT	River Flood Warning	PHI	Chester	10 hr
Aug 13, 10:40 AM EDT	Areal Flood Advisory	PHI	Carbon, Monroe, Northampton	42 min
Aug 13, 11:21 AM EDT	Areal Flood Warning	PHI	Carbon, Monroe, Northampton	4 hr
Aug 13, 12:14 PM EDT	River Flood Warning	PHI	Berks, Montgomery	23 hr
Aug 13, 12:14 PM EDT	River Flood Warning	PHI	Montgomery	28 hr
Aug 13, 12:14 PM EDT	River Flood Warning	PHI	Chester, Montgomery, Philadelphia	52 hr
Aug 13, 12:37 PM EDT	Areal Flood Warning	PHI	Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 1 more	18 hr
Aug 13, 3:07 PM EDT	River Flood Warning	PHI	Montgomery	6 hr
Aug 13, 4:57 PM EDT	Areal Flood Advisory	PHI	Carbon, Monroe, Northampton	3 hr
Aug 13, 5:09 PM EDT	River Flood Warning	PHI	Montgomery, Philadelphia	31 hr
Aug 13, 7:27 PM EDT	Areal Flood Warning	PHI	Carbon, Northampton	7 hr
Aug 13, 7:42 PM EDT	Severe Thunderstorm Warning	PHI	Chester	48 min

Nearby

River Flood Warnings in Pennsylvania, 2018 Every river flood warning in 2018

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.