Alert archive / Pennsylvania / River Flood Warnings in 2018

River Flood Warning 52, NWS Philadelphia/Mount Holly

November 3, 2018Chester County, Pennsylvania

NWS Philadelphia/Mount Holly issued this river flood warning at Nov 3, 2018, 2:03 AM EDT for Chester County, Pennsylvania. It took effect at Nov 3, 2018, 2:54 AM EDT. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued: Nov 3, 2018, 2:03 AM EDT (06:03 UTC)
In effect from: Nov 3, 2018, 2:54 AM EDT
Expired: Nov 3, 2018, 8:11 AM EDT
In force: 5 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 06:04 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 9.16 ft at Nov 3, 2018, 5:00 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.

The text

As transmitted.

138 
WGUS41 KPHI 030603
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mt Holly NJ
203 AM EDT Sat Nov 3 2018

...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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

PAC029-031202-
/O.NEW.KPHI.FL.W.0052.181103T0654Z-181103T2210Z/
/DWNP1.1.ER.181103T0654Z.181103T1100Z.181103T1610Z.NO/
203 AM EDT Sat Nov 3 2018

The National Weather Service in Mount Holly NJ has issued a 

* Flood Warning for 
  The East Branch Brandywine Creek at Downingtown.
* Until this evening...or until the warning is cancelled.
* At  1:47 AM Saturday the stage was 6.1 feet.
* Flood stage is 7.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage by after midnight this morning and continue 
  to rise to near 8.3 feet by this morning. The river will fall below flood stage
  by this afternoon.
* 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 Jun 4 
  2003.  

 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Brandywine Creek
  Downingtown            7.0    6.11  Sat 2 AM     8.3    Sat 7 AM 
 
&&
 
LAT...LON 4002 7567 3993 7561 3991 7567 4001 7574
                                      

$$

Robertson

3 follow-up statements

729 
WGUS41 KPHI 030900
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mt Holly NJ
500 AM EDT Sat Nov 3 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
...Forecast flooding changed from Minor to Moderate severity for the following 
rivers in Pennsylvania...
  East Branch Brandywine Creek Below Downingtown affecting Chester County

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

PAC029-031500-
/O.EXT.KPHI.FL.W.0052.000000T0000Z-181103T2341Z/
/DWNP1.2.ER.181103T0605Z.181103T1000Z.181103T1741Z.NO/
500 AM EDT Sat Nov 3 2018

...Observed flooding increased from Minor to Moderate severity...
...Forecast flooding increased from Minor to Moderate severity...
The Flood Warning continues for 
 The East Branch Brandywine Creek Below Downingtown.
* Until this evening...Or until the warning is cancelled.
* At 4:45 AM Saturday the stage was 9.1 feet.
* Flood stage is 7.0 feet.
* Moderate flooding is occurring and Moderate flooding is forecast.
* Forecast...The river will continue rising to near 9.3 feet by this morning. 
  The river will fall below flood stage this afternoon.
* 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 9.3 feet on Apr 17 
  2011.  

 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Brandywine Creek
  Downingtown            7.0    9.15  Sat 5 AM     9.3    Sat 6 AM 
 
&&
 
LAT...LON 4002 7567 3993 7561 3991 7567 4001 7574
                                      

$$

PAC029-045-031500-
/O.NEW.KPHI.FL.W.0056.181103T1800Z-181104T0000Z/
/CDFP1.1.ER.181103T1800Z.181103T1800Z.181103T1800Z.NO/
500 AM EDT Sat Nov 3 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 this evening...Or until the warning is cancelled.
* At 4:30 AM Saturday the stage was 5.8 feet.
* Flood stage is 9.0 feet.
* Minor flooding is forecast.
* Forecast...The river is expected to rise to near flood stage this afternoon.
* 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 9.2 feet on Sep 28 
  2018.  

 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Brandywine Creek
  Chadds Ford            9.0    5.85  Sat 4 AM     9.0    Sat 2 PM 
 
&&
 
LAT...LON 3993 7561 3982 7553 3979 7560 3991 7567
                                      

$$

694 
WGUS81 KPHI 031018
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
618 AM EDT Sat Nov 3 2018

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

  East Branch Brandywine Creek Below Downingtown affecting Chester County

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

PAC029-031820-
/O.EXT.KPHI.FL.W.0052.000000T0000Z-181103T1820Z/
/DWNP1.2.ER.181103T0605Z.181103T0900Z.181103T1220Z.NO/
618 AM EDT Sat Nov 3 2018

The Flood Warning continues for
  The East Branch Brandywine Creek at Downingtown.
* until this afternoon...Or until the warning is cancelled.
* At 5:46 AM Saturday the stage was 8.8 feet.
* Flood stage is 7.0 feet.
* Minor flooding is occurring and Minor flooding is forecast.
* Forecast...The river will continue to fall to below flood stage by this 
  morning.
* 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           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Brandywine Creek
  Downingtown            7.0    8.79  Sat 6 AM     Crested
 
&&
 
LAT...LON 4002 7567 3993 7561 3991 7567 4001 7574
                                      

$$

354 
WGUS81 KPHI 031211
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
811 AM EDT Sat Nov 3 2018

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

  East Branch Brandywine Creek Below Downingtown affecting Chester County

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

&&

PAC029-031241-
/O.CAN.KPHI.FL.W.0052.000000T0000Z-181103T1820Z/
/DWNP1.2.ER.181103T0605Z.181103T0900Z.181103T1101Z.NO/
811 AM EDT Sat Nov 3 2018

The Flood Warning is cancelled for
  The East Branch Brandywine Creek at Downingtown.
* At  8:01 AM Saturday the stage was 6.0 feet.
* Flood stage is 7.0 feet.
* Fell below flood stage at  7:01 AM Saturday.
* Forecast...The river will continue to fall to 2.8 feet by tomorrow morning.
* Impact...At 6.0 feet...Open adjacent land next to the creek floods.
* Flood history...This crest compares to a previous crest of 7.0 feet on Aug 4 
  2018.  

 
&&

                         FLD    OBSERVED           FORECAST
 LOCATION                STG    STG  DAY TIME      CREST

Brandywine Creek
  Downingtown            7.0    6.00  Sat 8 AM     Past crest 
 
&&
 
LAT...LON 4002 7567 3993 7561 3991 7567 4001 7574
                                      

$$

CMS

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 2, 8:22 PM EDT	Areal Flood Advisory	PHI	Berks, Lehigh, Northampton	4 hr
Nov 2, 9:28 PM EDT	Areal Flood Advisory	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	4 hr
Nov 2, 9:48 PM EDT	Special Weather Statement	PHI	Berks, Chester	27 min
Nov 2, 10:09 PM EDT	Severe Thunderstorm Warning	PHI	Chester, Delaware, Montgomery	51 min
Nov 2, 10:32 PM EDT	Tornado Warning	PHI	Berks, Chester, Montgomery	28 min
Nov 2, 10:36 PM EDT	Special Weather Statement	PHI	Northampton	24 min
Nov 2, 10:45 PM EDT	Areal Flood Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	13 hr
Nov 2, 10:47 PM EDT	Tornado Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	43 min
Nov 2, 10:53 PM EDT	Flash Flood Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	4 hr
Nov 2, 10:53 PM EDT	Severe Thunderstorm Warning	PHI	Berks, Bucks, Chester, Delaware, Lehigh, Montgomery and 1 more	67 min
Nov 2, 11:23 PM EDT	Tornado Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	24 min
Nov 2, 11:25 PM EDT	Areal Flood Advisory	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	4 hr
Nov 2, 11:49 PM EDT	Tornado Warning	PHI	Bucks	26 min
Nov 2, 11:53 PM EDT	Areal Flood Advisory	PHI	Bucks	4 hr
Nov 2, 11:53 PM EDT	Special Weather Statement	PHI	Delaware, Philadelphia	37 min
Nov 3, 12:20 AM EDT	Areal Flood Advisory	PHI	Berks, Carbon, Lehigh, Monroe, Northampton	4 hr
Nov 3, 1:03 AM EDT	River Flood Warning	PHI	Lehigh	5 hr
Nov 3, 1:29 AM EDT	Areal Flood Advisory	PHI	Monroe, Northampton	4 hr
Nov 3, 1:41 AM EDT	Areal Flood Advisory	PHI	Bucks	4 hr
Nov 3, 2:34 AM EDT	Areal Flood Warning	PHI	Bucks, Northampton	15 hr
Nov 3, 2:40 AM EDT	River Flood Warning	PHI	Montgomery	10 hr
Nov 3, 2:40 AM EDT	River Flood Warning	PHI	Chester, Montgomery, Philadelphia	15 hr
Nov 3, 3:21 AM EDT	Areal Flood Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	4 hr
Nov 3, 5:00 AM EDT	River Flood Warning	PHI	Chester, Delaware	6 hr
Nov 3, 7:01 AM EDT	Areal Flood Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	5 hr
Nov 3, 11:44 AM EDT	Areal Flood Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery, Northampton	8 hr
Nov 3, 5:19 PM EDT	Areal Flood Warning	PHI	Northampton	22 hr

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.