Alert archive / Pennsylvania / River Flood Warnings in 2018
River Flood Warning 60, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this river flood warning at Nov 24, 2018, 9:57 PM EST for Chester County, Pennsylvania. It took effect at Nov 24, 2018, 10:21 PM EST. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Nov 24, 2018, 9:57 PM EST (02:57 UTC)
- In effect from
- Nov 24, 2018, 10:21 PM EST
- Expired
- Nov 25, 2018, 5:58 AM EST
- In force
- 8 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 02:59 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 9.66 ft at Nov 25, 2018, 2:00 AM EST.
- 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.
609
WGUS41 KPHI 250258
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
957 PM EST Sat Nov 24 2018
...The National Weather Service in Mount Holly NJ has issued a Flood
Warning for the East Branch Brandywine Creek Below Downingtown...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...Do not attempt to drive through flooded areas. The
water may be deeper than you think it is.
&&
PAC029-250858-
/O.NEW.KPHI.FL.W.0060.181125T0321Z-181125T1230Z/
/DWNP1.1.ER.181125T0321Z.181125T0500Z.181125T0630Z.NO/
957 PM EST Sat Nov 24 2018
The National Weather Service in Mount Holly NJ has issued a
* Flood Warning for
The East Branch Brandywine Creek at Downingtown.
* until Sunday morning or until the warning is cancelled.
* At 9:45 PM the creek level was 6.36 feet.
* Flood stage is 7.0 feet.
* Minor flooding is forecast.
* Forecast...The creek level is forecast to rise above flood stage
by midnight, recahing 7.6 feet. The creek will fall back below
flood stage toward morning.
* Impact...At 8.0 feet...Dowlin Forge Road begins to flood.
* Flood history...This crest compares to a previous crest of 7.0
feet on August 4, 2018.
&&
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
Brandywine Creek
Downingtown 7.0 6.36 Sat 945 PM 7.6 Sun 12 AM
&&
LAT...LON 4002 7567 3993 7561 3991 7567 4001 7574
$$
Iovino3 follow-up statements
912
WGUS41 KPHI 250402
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
1102 PM EST Sat Nov 24 2018
...Forecast flooding changed from Minor to Moderate severity
for the East Branch Brandywine Creek Below Downingtown...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...Do not attempt to drive through flooded areas.
The water may be deeper than you think it is.
&&
PAC029-251001-
/O.EXT.KPHI.FL.W.0060.000000T0000Z-181125T1636Z/
/DWNP1.2.ER.181125T0309Z.181125T0600Z.181125T1036Z.NO/
1102 PM EST Sat Nov 24 2018
...Forecast flooding increased from Minor to Moderate severity...
The Flood Warning continues for
The East Branch Brandywine Creek Below Downingtown.
* until Sunday morning or until the warning is cancelled.
* At 10:45 PM the creek level was 7.91 feet.
* Flood stage is 7.0 feet.
* Minor flooding is occurring and Moderate flooding is forecast.
* Forecast...The creek will continue rising to near 9.7 feet
after midnight. The creek should fall back below flood stage
on Sunday morning.
* Impact...At 9.0 feet...High water on the Brandywine sends
backwater up Beaver Creek. Beaver Creek floods inundating
parks and the Downingtown Little League fields.
* Flood history...This crest compares to a previous crest of
9.8 feet on April 16, 1996.
&&
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
Brandywine Creek
Downingtown 7.0 7.91 Sat 1045 PM 9.7 Sun 1 AM
&&
LAT...LON 4002 7567 3993 7561 3991 7567 4001 7574
$$
Iovino554
WGUS81 KPHI 250921
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
421 AM EST Sun Nov 25 2018
...The Flood Warning continues for the East Branch Brandywine
Creek Below Downingtown...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...Do not attempt to drive through flooded areas.
The water may be deeper than you think it is.
&&
PAC029-251636-
/O.CON.KPHI.FL.W.0060.000000T0000Z-181125T1636Z/
/DWNP1.2.ER.181125T0309Z.181125T0700Z.181125T1036Z.NO/
421 AM EST Sun Nov 25 2018
The Flood Warning continues for
The East Branch Brandywine Creek at Downingtown.
* At 4:00 AM the river level was 8.42 feet.
* Flood stage is 7.0 feet.
* Minor flooding is occurring.
* Forecast...The river level will continue to fall, and it
should return back below flood stage early this morning.
* Impact...At 8.0 feet...Dowlin Forge Road floods.
&&
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
Brandywine Creek
Downingtown 7.0 8.42 Sun 4 AM Crested
&&
LAT...LON 4002 7567 3993 7561 3991 7567 4001 7574
$$
Iovino701
WGUS81 KPHI 251058
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
558 AM EST Sun Nov 25 2018
...The Flood Warning is cancelled for the following rivers in Pennsylvania...
East Branch Brandywine Creek Below Downingtown affecting Chester County
&&
PAC029-251128-
/O.CAN.KPHI.FL.W.0060.000000T0000Z-181125T1636Z/
/DWNP1.2.ER.181125T0309Z.181125T0700Z.181125T1005Z.NO/
558 AM EST Sun Nov 25 2018
The Flood Warning is cancelled for
The East Branch Brandywine Creek at Downingtown.
* At 5:45 AM Sunday the stage was 6.4 feet.
* Flood stage is 7.0 feet.
* Fell below flood stage at 5:05 AM Sunday.
* Forecast...The river will continue to fall to 3.6 feet by tomorrow morning.
* Impact...At 6.0 feet...Open adjacent land next to the creek floods.
* Flood history...This crest compares to a previous crest of 7.0 feet on Aug 4
2018.
&&
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
Brandywine Creek
Downingtown 7.0 6.38 Sun 6 AM 6.8 Sun 6 AM
&&
LAT...LON 4002 7567 3993 7561 3991 7567 4001 7574
$$The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 24, 10:15 PM EST | Areal Flood Warning | PHI | Chester, Delaware | 6 hr |
| Nov 24, 10:34 PM EST | River Flood Warning | PHI | Delaware | 5 hr |
| Nov 24, 11:33 PM EST | Areal Flood Warning | PHI | Montgomery, Philadelphia | 12 hr |
| Nov 24, 11:36 PM EST | Areal Flood Warning | PHI | Chester | 6 hr |
| Nov 25, 12:05 AM EST | Areal Flood Warning | PHI | Bucks | 12 hr |
| Nov 25, 12:13 AM EST | River Flood Warning | PHI | Montgomery | 10 hr |
| Nov 25, 12:16 AM EST | River Flood Warning | PHI | Chester, Delaware | 15 hr |
| Nov 25, 1:47 AM EST | River Flood Warning | PHI | Bucks | 12 hr |
| Nov 25, 2:54 AM EST | River Flood Warning | PHI | Chester, Montgomery, Philadelphia | 21 hr |
| Nov 25, 2:54 AM EST | River Flood Warning | PHI | Montgomery, Philadelphia | 17 hr |
| Nov 25, 3:25 PM EST | Coastal Flood Advisory | PHI | Bucks, Delaware, Philadelphia | 34 hr |
| Nov 25, 3:35 PM EST | Flood Watch | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 27 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.