Alert archive / Pennsylvania / River Flood Warnings in 2020
River Flood Warning 40, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this river flood warning at Nov 30, 2020, 5:30 PM EST for Chester County, Delaware County, Pennsylvania. It took effect at Nov 30, 2020, 6:02 PM EST. It was in force for 15 hr.
The area
The outline as issued.
The facts
- Issued
- Nov 30, 2020, 5:30 PM EST (22:30 UTC)
- In effect from
- Nov 30, 2020, 6:02 PM EST
- Expired
- Dec 1, 2020, 9:06 AM EST
- In force
- 15 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 22:30 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 9.82 ft at Dec 1, 2020, 3:00 AM 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.
137 WGUS41 KPHI 302230 RRA FLWPHI BULLETIN - EAS ACTIVATION REQUESTED Flood Warning National Weather Service Mount Holly NJ 530 PM EST Mon Nov 30 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... A Flood Warning means that flooding is imminent or occurring. All interested parties should take necessary precautions immediately. Motorists should not attempt to drive around barricades or drive cars through flooded areas. Turn around...don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Additional information is available at www.weather.gov/phi. PAC029-045-011030- /O.NEW.KPHI.FL.W.0040.201130T2302Z-201201T1543Z/ /CDFP1.1.ER.201130T2302Z.201201T0600Z.201201T0942Z.NO/ 530 PM EST Mon Nov 30 2020 The National Weather Service in Mount Holly has issued a * Flood Warning for the Brandywine Creek At Chadds Ford. * Until Tuesday morning. * At 4:30 PM EST Monday the stage was 8.4 feet. * Flood stage is 9.0 feet. * Minor flooding is forecast. * Forecast...The river is expected to rise above flood stage this evening to a crest of 10.3 feet just after midnight tonight. It will then fall below flood stage late tonight. * 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 10.4 feet on 12/11/2003. && Stream Fld Observed Fcsts (7 pm) Crest Location Stg Stg Day/Time Tue Wed Stg Time Date Brandywine Creek Chadds Ford 9.0 8.4 Mon 4 pm 4.8 2.9 10.3 1am 12/01 && LAT...LON 3993 7561 3982 7553 3979 7560 3991 7567 $$ BAH
3 follow-up statements
501 WGUS41 KPHI 010103 FLWPHI BULLETIN - EAS ACTIVATION REQUESTED Flood Warning National Weather Service Mount Holly NJ 803 PM EST Mon Nov 30 2020 ...The Flood Warning continues for the following rivers in Pennsylvania... Brandywine Creek At Chadds Ford affecting Delaware and Chester Counties. For the Brandywine Creek...including Chadds Ford...Minor flooding is forecast. PRECAUTIONARY/PREPAREDNESS ACTIONS... Motorists should not attempt to drive around barricades or drive cars through flooded areas. A Flood Warning means that flooding is imminent or occurring. All interested parties should take necessary precautions immediately. Turn around...don't drown when encountering flooded roads. Most flood deaths occur in vehicles. Additional information is available at www.weather.gov/phi. PAC029-045-011315- /O.CON.KPHI.FL.W.0040.000000T0000Z-201201T1543Z/ /CDFP1.1.ER.201130T2319Z.201201T0600Z.201201T1006Z.NO/ 803 PM EST Mon Nov 30 2020 ...The Flood Warning remains in effect... The Flood Warning continues for the Brandywine Creek At Chadds Ford. * Until Tuesday morning. * At 7:30 PM EST Monday the stage was 9.3 feet. * Flood stage is 9.0 feet. * Minor flooding is occurring and minor flooding is forecast. * Recent Activity...The maximum river stage in the 24 hours ending at 7:30 PM EST Monday was 9.3 feet. * Forecast...The river is expected to rise to a crest of 10.3 feet just after midnight tonight. It will then fall below flood stage late tonight. * Impact at 8.0 feet...Open adjacent land next to the creek floods. Impact at 10.0 feet...The intersections of Creek Road and Route 926 near Pocopson floods upstream of Chadds Ford. * Flood History...This crest compares to a previous crest of 10.4 feet on 12/11/2003. && Stream Fld Observed Fcsts (7 pm) Crest Location Stg Stg Day/Time Tue Wed Stg Time Date Brandywine Creek Chadds Ford 9.0 9.3 Mon 7 pm 5.1 2.9 10.3 1am 12/01 && LAT...LON 3993 7561 3982 7553 3979 7560 3991 7567 $$ BAH
661 WGUS81 KPHI 010214 FLSPHI Flood Statement National Weather Service Mount Holly NJ 914 PM EST Mon Nov 30 2020 ...The Flood Warning is extended for the Brandywine Creek at Chadds Ford... PRECAUTIONARY/PREPAREDNESS ACTIONS... Motorists should not attempt to drive around barricades or through flooded areas. Additional information is available at www.weather.gov/phi. PAC029-045-011415- /O.EXT.KPHI.FL.W.0040.000000T0000Z-201201T1700Z/ /CDFP1.1.ER.201130T2319Z.201201T0700Z.201201T1100Z.NO/ 914 PM EST Mon Nov 30 2020 ...The Flood Warning is now in effect until early tomorrow afternoon... The Flood Warning continues for the Brandywine Creek At Chadds Ford. * Until Tuesday afternoon. * At 8:30 PM Monday the creek level was 9.4 feet. * Flood stage is 9.0 feet. * Minor flooding is occurring and is forecast to continue. * Forecast...The creek is expected to rise to a crest of 10.4 feet just after midnight. It will then fall below flood stage on Tuesday 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. && Stream Fld Observed Fcsts (7 pm) Crest Location Stg Stg Day/Time Tue Wed Stg Time Date Brandywine Creek Chadds Ford 9.0 9.4 Mon 8 pm 4.3 3.0 10.4 2am 12/01 && LAT...LON 3993 7561 3982 7553 3979 7560 3991 7567 $$ Iovino
254 WGUS81 KPHI 011406 FLSPHI Flood Statement National Weather Service Mount Holly NJ 906 AM EST Tue Dec 1 2020 ...The Flood Warning is cancelled for the following rivers in Pennsylvania... Brandywine Creek At Chadds Ford affecting Delaware and Chester Counties. PAC029-045-011515- /O.CAN.KPHI.FL.W.0040.000000T0000Z-201201T1406Z/ /CDFP1.1.ER.700119T1419Z.700119T1419Z.700119T1420Z.NO/ 906 AM EST Tue Dec 1 2020 ...The Flood Warning for the Brandywine Creek At Chadds Ford has been cancelled... The Flood Warning is cancelled for the Brandywine Creek At Chadds Ford. * At 8:30 AM EST Tuesday the stage was 8.3 feet. * Flood stage is 9.0 feet. * Forecast...The river is expected to fall to 2.7 feet early Friday morning. && Stream Fld Observed Fcsts (7 am) Crest Location Stg Stg Day/Time Wed Thu Stg Time Date Brandywine Creek Chadds Ford 9.0 8.3 Tue 8 am 3.5 2.8 Crested && LAT...LON 3993 7561 3982 7553 3979 7560 3991 7567 $$ Kruzdlo
The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 30, 12:15 PM EST | Areal Flood Advisory | PHI | Chester, Delaware | 3 hr |
| Nov 30, 12:41 PM EST | Special Weather Statement | PHI | Chester, Montgomery | 49 min |
| Nov 30, 2:17 PM EST | Areal Flood Warning | PHI | Berks, Bucks, Lehigh, Montgomery | 9 hr |
| Nov 30, 2:18 PM EST | Coastal Flood Advisory | PHI | Bucks, Delaware, Philadelphia | 2 hr |
| Nov 30, 2:41 PM EST | Severe Thunderstorm Warning | PHI | Chester, Delaware | 49 min |
| Nov 30, 2:48 PM EST | Areal Flood Warning | PHI | Chester, Delaware, Montgomery | 8 hr |
| Nov 30, 3:01 PM EST | Severe Thunderstorm Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 44 min |
| Nov 30, 3:26 PM EST | Areal Flood Warning | PHI | Berks, Bucks, Carbon, Lehigh, Monroe, Northampton | 4 hr |
| Nov 30, 3:43 PM EST | Severe Thunderstorm Warning | PHI | Berks, Bucks, Lehigh, Monroe, Montgomery, Northampton and 1 more | 47 min |
| Nov 30, 3:51 PM EST | River Flood Warning | PHI | Chester | 14 hr |
| Nov 30, 3:53 PM EST | Areal Flood Warning | PHI | Monroe, Northampton | 16 hr |
| Nov 30, 3:53 PM EST | Tornado Warning | PHI | Bucks, Montgomery | 13 min |
| Nov 30, 4:17 PM EST | Areal Flood Warning | PHI | Bucks, Delaware, Montgomery, Philadelphia | 10 hr |
| Nov 30, 5:33 PM EST | River Flood Warning | PHI | Montgomery | 10 hr |
| Nov 30, 5:35 PM EST | River Flood Warning | PHI | Delaware | 4 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.