Alert archive / Pennsylvania / River Flood Warnings in 2020
River Flood Warning 60, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this river flood warning at Dec 25, 2020, 3:33 AM EST for Chester County, Delaware County, Pennsylvania. It took effect at Dec 25, 2020, 3:49 AM EST. It was in force for 17 hr.
The area
The outline as issued.
The facts
- Issued
- Dec 25, 2020, 3:33 AM EST (08:33 UTC)
- In effect from
- Dec 25, 2020, 3:49 AM EST
- Expired
- Dec 25, 2020, 8:58 PM EST
- In force
- 17 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 08:32 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 10.91 ft at Dec 25, 2020, 12:00 PM EST.
- 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.
307 WGUS41 KPHI 250833 FLWPHI BULLETIN - EAS ACTIVATION REQUESTED Flood Warning National Weather Service Mount Holly NJ 333 AM EST Fri Dec 25 2020 ...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 Chadds Ford...Minor flooding is forecast. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around...don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Additional information is available at www.weather.gov/phi. PAC029-045-252045- /O.NEW.KPHI.FL.W.0060.201225T0849Z-201226T0500Z/ /CDFP1.1.ER.201225T0849Z.201225T1800Z.201225T2300Z.NO/ 333 AM EST Fri Dec 25 2020 The National Weather Service in Mount Holly has issued a * Flood Warning for the Brandywine Creek At Chadds Ford. * Until late tonight. * At 2:30 AM EST Friday the stage was 8.8 feet. * Flood stage is 9.0 feet. * Minor flooding is forecast. * Forecast...The river is expected to rise above flood stage early this morning to a crest of 10.0 feet this afternoon. It will then fall below flood stage this evening. * 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 04/14/2010. && Stream Fld Observed Fcsts (1 am) Crest Location Stg Stg Day/Time Sat Sun Stg Time Date Brandywine Creek Chadds Ford 9.0 8.8 Fri 2 am 6.9 4.2 10.0 1pm 12/25 && LAT...LON 3993 7561 3982 7553 3979 7559 3990 7567 $$ CMS
2 follow-up statements
038 WGUS81 KPHI 251750 FLSPHI Flood Statement National Weather Service Mount Holly NJ 1250 PM EST Fri Dec 25 2020 ...The Flood Warning continues for the following rivers in Pennsylvania... Brandywine Creek At Chadds Ford affecting Delaware and Chester Counties. For the Brandywine Creek...including Chadds Ford...Minor flooding is forecast. PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around...don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Additional information is available at www.weather.gov/phi. PAC029-045-260500- /O.CON.KPHI.FL.W.0060.000000T0000Z-201226T0500Z/ /CDFP1.1.ER.201225T0845Z.201225T1630Z.201225T2200Z.NO/ 1250 PM EST Fri Dec 25 2020 ...The Flood Warning remains in effect... The Flood Warning continues for the Brandywine Creek At Chadds Ford. * Until late tonight. * At 12:30 PM EST Friday the stage was 10.9 feet. * Flood stage is 9.0 feet. * Minor flooding is occurring and minor flooding is forecast. * Recent Activity...The maximum river stage in the 24 hours ending at 12:30 PM EST Friday was 10.9 feet. * Forecast...The river is expected to fall below flood stage late this afternoon and continue falling to 3.3 feet Monday morning. * Impact at 8.0 feet...Open adjacent land next to the creek floods. Impact at 10.0 feet...The intersections of Creek Road and Route 926 near Pocopson floods upstream of Chadds Ford. Impact at 11.8 feet...Brandywine River Museum begins to take on water. Route 1 also takes on water. * Flood History...This crest compares to a previous crest of 11.1 feet on 02/07/2004. && Stream Fld Observed Fcsts (1 pm) Crest Location Stg Stg Day/Time Sat Sun Stg Time Date Brandywine Creek Chadds Ford 9.0 10.9 Fri 12 p 4.8 3.6 Cresting && LAT...LON 3993 7561 3982 7553 3979 7559 3990 7567 $$ Kruzdlo
164 WGUS81 KPHI 260158 FLSPHI Flood Statement National Weather Service Mount Holly NJ 858 PM EST Fri Dec 25 2020 ...The Flood Warning is cancelled for the following river in Pennsylvania... Brandywine Creek At Chadds Ford affecting Delaware and Chester Counties. PAC029-045-260300- /O.CAN.KPHI.FL.W.0060.000000T0000Z-201226T0158Z/ /CDFP1.1.ER.201225T0845Z.201225T1630Z.201225T2200Z.NO/ 858 PM EST Fri Dec 25 2020 ...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 8:30 PM EST Friday the stage was 8.1 feet. * Flood stage is 9.0 feet. * Forecast...The river is expected to continue falling. && Stream Fld Observed Fcsts (7 pm) Crest Location Stg Stg Day/Time Sat Sun Stg Time Date Brandywine Creek Chadds Ford 9.0 8.1 Fri 8 pm 4.4 3.5 Crested && LAT...LON 3993 7561 3982 7553 3979 7559 3990 7567 $$ Iovino
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 24, 8:47 PM EST | Areal Flood Advisory | PHI | Chester, Delaware, Montgomery, Philadelphia | 6 hr |
| Dec 24, 9:08 PM EST | Coastal Flood Advisory | PHI | Bucks, Philadelphia | 14 hr |
| Dec 24, 9:16 PM EST | Areal Flood Advisory | PHI | Bucks, Lehigh, Northampton | 3 hr |
| Dec 24, 9:38 PM EST | Areal Flood Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 14 hr |
| Dec 24, 10:09 PM EST | Areal Flood Advisory | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 6 hr |
| Dec 24, 10:21 PM EST | Areal Flood Warning | PHI | Bucks | 14 hr |
| Dec 24, 10:30 PM EST | River Flood Warning | PHI | Delaware | 10 hr |
| Dec 24, 11:10 PM EST | Areal Flood Advisory | PHI | Bucks | 4 hr |
| Dec 24, 11:26 PM EST | River Flood Warning | PHI | Chester | 13 hr |
| Dec 24, 11:48 PM EST | Areal Flood Warning | PHI | Bucks | 15 hr |
| Dec 24, 11:54 PM EST | Areal Flood Warning | PHI | Lehigh, Monroe, Northampton | 12 hr |
| Dec 25, 12:36 AM EST | River Flood Warning | PHI | Montgomery | 13 hr |
| Dec 25, 12:53 AM EST | Areal Flood Warning | PHI | Chester | 6 hr |
| Dec 25, 12:59 AM EST | River Flood Warning | PHI | Chester, Montgomery, Philadelphia | 21 hr |
| Dec 25, 1:56 AM EST | Areal Flood Warning | PHI | Bucks, Philadelphia | 7 hr |
| Dec 25, 2:28 AM EST | River Flood Warning | PHI | Bucks | 15 hr |
| Dec 25, 3:29 AM EST | Areal Flood Warning | PHI | Berks | 6 hr |
| Dec 25, 4:00 AM EST | River Flood Warning | PHI | Lehigh, Northampton | 16 hr |
| Dec 25, 4:31 AM EST | Areal Flood Warning | PHI | Carbon, Lehigh, Monroe, Northampton | 7 hr |
| Dec 25, 4:53 AM EST | River Flood Warning | PHI | Berks, Montgomery | 9 hr |
| Dec 25, 6:32 AM EST | River Flood Warning | PHI | Montgomery, Philadelphia | 7 hr |
| Dec 25, 7:28 AM EST | River Flood Warning | PHI | Monroe | 10 hr |
| Dec 25, 12:13 PM EST | Areal Flood Warning | PHI | Carbon, Monroe | 9 hr |
Nearby
River Flood Warnings in Pennsylvania, 2020Every river flood warning in 2020
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.