Alert archive / Pennsylvania / River Flood Warnings in 2018
River Flood Warning 21, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this river flood warning at Jun 11, 2018, 3:28 AM EDT for Chester County, Pennsylvania. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 11, 2018, 3:28 AM EDT (07:28 UTC)
- Expired
- Jun 11, 2018, 8:07 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 07:29 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 8.15 ft at Jun 11, 2018, 6:00 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.
554
WGUS41 KPHI 110728
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mt Holly NJ
328 AM EDT Mon Jun 11 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.
&&
PAC029-111328-
/O.NEW.KPHI.FL.W.0021.180611T0728Z-180611T1433Z/
/DWNP1.1.ER.180611T0721Z.180611T0800Z.180611T0833Z.NO/
328 AM EDT Mon Jun 11 2018
The National Weather Service in Mount Holly NJ has issued a
* Flood Warning for
The East Branch Brandywine Creek at Downingtown.
* until this morning...or until the warning is cancelled.
* At 2:46 AM Monday the stage was 6.1 feet.
* Flood stage is 7.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage by early this morning and continue to rise
to near 8.0 feet by early this morning.the river will fall below flood stage
by early this morning.
* 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 6.12 Mon 3 AM 8.0 Mon 4 AM
&&
LAT...LON 4002 7567 3993 7561 3991 7567 4001 7574
$$1 follow-up statement
272
WGUS81 KPHI 111207
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
807 AM EDT Mon Jun 11 2018
...The Flood Warning is cancelled for the following rivers in Pennsylvania...
East Branch Brandywine Creek Below Downingtown affecting Chester County
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...Do not attempt to drive through flooded areas. The water may be
deeper than you think.
&&
PAC029-111237-
/O.CAN.KPHI.FL.W.0021.000000T0000Z-180611T1433Z/
/DWNP1.1.ER.180611T0730Z.180611T0945Z.180611T1144Z.NO/
807 AM EDT Mon Jun 11 2018
The Flood Warning is cancelled for
The East Branch Brandywine Creek at Downingtown.
* At 8:01 AM Monday the stage was 6.8 feet.
* Flood stage is 7.0 feet.
* Fell below flood stage at 7:44 AM Monday.
* Forecast...The river will continue to fall to 3.2 feet by tomorrow morning.
* Impact...At 6.0 feet...Open adjacent land next to the creek floods.
&&
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
Brandywine Creek
Downingtown 7.0 6.75 Mon 8 AM 5.0 Mon 9 AM
&&
LAT...LON 4002 7567 3993 7561 3991 7567 4001 7574
$$The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 8:29 PM EDT | Areal Flood Advisory | PHI | Berks, Chester, Montgomery | 115 min |
| Jun 10, 9:52 PM EDT | Areal Flood Warning | PHI | Berks, Chester, Montgomery | 18 hr |
| Jun 10, 10:38 PM EDT | Areal Flood Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 20 hr |
| Jun 10, 11:33 PM EDT | Flash Flood Warning | PHI | Berks, Chester, Delaware, Montgomery, Philadelphia | 5 hr |
| Jun 11, 1:16 AM EDT | Areal Flood Advisory | PHI | Chester, Delaware, Philadelphia | 8 hr |
Nearby
River Flood Warnings in Pennsylvania, 2018Every 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.