Alert archive / Pennsylvania / River Flood Warnings in 2021
River Flood Warning 56, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this river flood warning at Sep 1, 2021, 7:53 PM EDT for Delaware County, Pennsylvania. It was in force for 13 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 1, 2021, 7:53 PM EDT (23:53 UTC)
- Expired
- Sep 2, 2021, 8:37 AM EDT
- In force
- 13 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Flood severity
- Minor
County Delaware County, PA
The radar
The Philadelphia radar (KDIX), 86 km from the middle of the area, began a volume at 23:56 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 Chester Creek near Chester (CHSP1). The gauge peaked at 10.39 ft at Sep 2, 2021, 2:00 AM EDT.
- Action stage
- 7 ft
- Minor stage
- 8 ft
- Moderate stage
- 10 ft
- Major stage
- 14 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 01477000, 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.
189
WGUS41 KPHI 012353
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mount Holly NJ
753 PM EDT Wed Sep 1 2021
...The National Weather Service in Mount Holly NJ has issued a Flood
Warning for the following rivers in Pennsylvania...
Chester Creek Near Chester affecting Delaware County.
For the Chester Creek...including Chester...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.
PAC045-020615-
/O.NEW.KPHI.FL.W.0056.210901T2353Z-210902T0601Z/
/CHSP1.1.ER.210901T2340Z.210902T0100Z.210902T0200Z.NO/
753 PM EDT Wed Sep 1 2021
The National Weather Service in Mount Holly has issued a
* Flood Warning for
the Chester Creek Near Chester.
* From this evening to late tonight.
* At 7:46 PM EDT Wednesday the stage was 8.4 feet.
* Flood stage is 8.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending
at 7:46 PM EDT Wednesday was 8.4 feet.
* Forecast...The river is expected to rise to a crest of 8.8 feet
late this evening. It will then fall below flood stage late this
evening.
* Impact...At 7.0 feet, The creek floods adjacent open land.
* Flood History...This crest compares to a previous crest of 8.7
feet on 04/17/2011.
&&
Fld Observed Forecasts (8 pm EDT)
Location Stg Stg Day/Time Thu Fri Sat
Chester Creek
Chester 8.0 8.4 Wed 7 pm EDT 3.2 MSG MSG
&&
LAT...LON 3991 7542 3985 7534 3981 7540 3987 7547
$$
NC3 follow-up statements
357
WGUS81 KPHI 020154
FLSPHI
Flood Statement
National Weather Service Mount Holly NJ
954 PM EDT Wed Sep 1 2021
...The Flood Warning is extended for the following rivers in
Pennsylvania...
Chester Creek Near Chester affecting Delaware County.
For the Chester Creek...including Chester...Minor flooding is
forecast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Turn around...don't drown when encountering flooded roads. Most
flood deaths occur in vehicles.
Additional information is available at www.weather.gov/phi.
PAC045-021000-
/O.EXT.KPHI.FL.W.0056.000000T0000Z-210902T0951Z/
/CHSP1.1.ER.210901T2340Z.210902T0131Z.210902T0351Z.NO/
954 PM EDT Wed Sep 1 2021
...The Flood Warning is now in effect until late tonight...
The Flood Warning continues for
the Chester Creek Near Chester.
* Until late tonight.
* At 9:31 PM EDT Wednesday the stage was 9.9 feet.
* Flood stage is 8.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending
at 9:31 PM EDT Wednesday was 9.9 feet.
* Forecast...The river is expected to fall below flood stage late
this evening and continue falling to 3.2 feet just after midnight
tonight.
* Impact...At 7.0 feet, The creek floods adjacent open land.
* Impact...At 10.5 feet, Flood damage, adjacent to the creek, begins
in the city of Chester.
* Flood History...This crest compares to a previous crest of 9.5
feet on 03/13/2010.
&&
Fld Observed Forecasts (unknown time)
Location Stg Stg Day/Time d1 d2 d3
Chester Creek
Chester 8.0 9.9 Wed 9 pm EDT MSG MSG MSG
&&
LAT...LON 3991 7542 3985 7534 3981 7540 3987 7547
$$
NC987
WGUS81 KPHI 020741
FLSPHI
Flood Statement
National Weather Service Mount Holly NJ
341 AM EDT Thu Sep 2 2021
...The Flood Warning is extended for the following rivers in
Pennsylvania...
Chester Creek Near Chester affecting Delaware County.
For the Chester Creek...including Chester...Minor flooding is
forecast.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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.
Be especially cautious at night when it is harder to recognize the
dangers of flooding.
Additional information is available at www.weather.gov/phi.
PAC045-021715-
/O.EXT.KPHI.FL.W.0056.000000T0000Z-210902T1705Z/
/CHSP1.1.ER.210901T2340Z.210902T0531Z.210902T1105Z.NO/
341 AM EDT Thu Sep 2 2021
...The Flood Warning is now in effect until this afternoon...
The Flood Warning continues for
the Chester Creek Near Chester.
* Until this afternoon.
* At 3:31 AM EDT Thursday the stage was 10.0 feet.
* Flood stage is 8.0 feet.
* Minor flooding is occurring and minor flooding is forecast.
* Recent Activity...The maximum river stage in the 24 hours ending
at 3:31 AM EDT Thursday was 10.5 feet.
* Forecast...The river is expected to fall below flood stage this
morning and continue falling to 3.3 feet tomorrow afternoon.
* Impact...At 7.0 feet, The creek floods adjacent open land.
* Impact...At 10.5 feet, Flood damage, adjacent to the creek, begins
in the city of Chester.
* Flood History...This crest compares to a previous crest of 10.4
feet on 04/15/2007.
&&
Fld Observed Forecasts (4 am EDT)
Location Stg Stg Day/Time Fri Sat Sun
Chester Creek
Chester 8.0 10.0 Thu 3 am EDT 3.4 MSG MSG
&&
LAT...LON 3991 7542 3985 7534 3981 7540 3987 7547
$$
Meola635
WGUS81 KPHI 021237
FLSPHI
Flood Statement
National Weather Service Mount Holly NJ
837 AM EDT Thu Sep 2 2021
...The Flood Warning is cancelled for the following rivers in
Pennsylvania...
Chester Creek Near Chester affecting Delaware County.
PAC045-021345-
/O.CAN.KPHI.FL.W.0056.000000T0000Z-210902T1237Z/
/CHSP1.1.ER.210901T2340Z.210902T0531Z.210902T1113Z.NO/
837 AM EDT Thu Sep 2 2021
...The Flood Warning for the Chester Creek Near Chester has been
cancelled...
The Flood Warning is cancelled for
the Chester Creek Near Chester.
* At 8:31 AM EDT Thursday the stage was 6.8 feet.
* Flood stage is 8.0 feet.
* Forecast...The river is expected to fall to 3.3 feet tomorrow
afternoon.
&&
Fld Observed Forecasts (9 am EDT)
Location Stg Stg Day/Time Fri Sat Sun
Chester Creek
Chester 8.0 6.8 Thu 8 am EDT 3.2 MSG MSG
&&
LAT...LON 3991 7542 3985 7534 3981 7540 3987 7547
$$
KruzdloThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 1, 6:19 AM EDT | Areal Flood Advisory | PHI | Chester, Delaware | 116 min |
| Sep 1, 6:49 AM EDT | Flash Flood Warning | PHI | Chester, Delaware, Philadelphia | 86 min |
| Sep 1, 11:24 AM EDT | Areal Flood Advisory | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 3 hr |
| Sep 1, 12:07 PM EDT | Flash Flood Warning | PHI | Carbon, Monroe | 4 hr |
| Sep 1, 1:29 PM EDT | Flash Flood Warning | PHI | Berks, Lehigh | 6 hr |
| Sep 1, 2:53 PM EDT | Flash Flood Warning | PHI | Berks, Chester, Delaware, Montgomery | 9 hr |
| Sep 1, 3:55 PM EDT | River Flood Warning | PHI | Montgomery | 36 hr |
| Sep 1, 3:55 PM EDT | River Flood Warning | PHI | Chester, Montgomery, Philadelphia | 43 hr |
| Sep 1, 3:55 PM EDT | River Flood Warning | PHI | Montgomery, Philadelphia | 41 hr |
| Sep 1, 3:55 PM EDT | River Flood Warning | PHI | Philadelphia | 39 hr |
| Sep 1, 3:55 PM EDT | River Flood Warning | PHI | Berks | 24 hr |
| Sep 1, 4:02 PM EDT | River Flood Warning | PHI | Monroe | 24 hr |
| Sep 1, 4:04 PM EDT | Areal Flood Warning | PHI | Carbon, Monroe, Northampton | 24 hr |
| Sep 1, 4:10 PM EDT | River Flood Warning | PHI | Monroe | 19 hr |
| Sep 1, 4:12 PM EDT | Flash Flood Warning | PHI | Berks, Bucks, Lehigh, Montgomery, Northampton | 7 hr |
| Sep 1, 4:12 PM EDT | River Flood Warning | PHI | Lehigh, Northampton | 25 hr |
| Sep 1, 4:12 PM EDT | River Flood Warning | PHI | Lehigh, Northampton | 24 hr |
| Sep 1, 4:12 PM EDT | River Flood Warning | PHI | Carbon | 15 hr |
| Sep 1, 4:13 PM EDT | Tornado Warning | PHI | Chester | 32 min |
| Sep 1, 4:20 PM EDT | River Flood Warning | PHI | Montgomery | 22 hr |
| Sep 1, 4:21 PM EDT | River Flood Warning | PHI | Bucks | 29 hr |
| Sep 1, 4:42 PM EDT | Flash Flood Warning | PHI | Chester, Delaware, Montgomery | 6 hr |
| Sep 1, 5:07 PM EDT | River Flood Warning | PHI | Chester | 17 hr |
| Sep 1, 5:13 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 47 min |
| Sep 1, 5:15 PM EDT | Tornado Warning | PHI | Delaware, Montgomery, Philadelphia | 30 min |
| Sep 1, 5:26 PM EDT | Flash Flood Warning | PHI | Bucks, Delaware, Montgomery, Philadelphia | 9 hr |
| Sep 1, 5:34 PM EDT | Tornado Warning | PHI | Bucks, Montgomery, Philadelphia | 26 min |
| Sep 1, 5:42 PM EDT | Flash Flood Warning | PHI | Bucks | 10 hr |
| Sep 1, 5:57 PM EDT | Tornado Warning | PHI | Bucks | 33 min |
| Sep 1, 6:08 PM EDT | Flash Flood Warning | PHI | Monroe, Northampton | 6 hr |
| Sep 1, 6:20 PM EDT | Tornado Warning | PHI | Bucks | 40 min |
| Sep 1, 6:22 PM EDT | Tornado Warning | PHI | Philadelphia | 23 min |
| Sep 1, 6:38 PM EDT | River Flood Warning | PHI | Chester, Delaware | 26 hr |
| Sep 1, 6:42 PM EDT | Tornado Warning | PHI | Bucks, Philadelphia | 33 min |
| Sep 1, 6:59 PM EDT | Severe Thunderstorm Warning | PHI | Bucks | 61 min |
| Sep 1, 7:04 PM EDT | Tornado Warning | PHI | Bucks | 26 min |
| Sep 1, 7:05 PM EDT | Flash Flood Warning | PHI | Bucks | 8 hr |
| Sep 1, 7:22 PM EDT | Tornado Warning | PHI | Bucks | 11 min |
| Sep 1, 7:23 PM EDT | Areal Flood Warning | PHI | Berks, Lehigh | 14 hr |
| Sep 1, 7:31 PM EDT | Flash Flood Warning | PHI | Bucks | 4 hr |
Nearby
River Flood Warnings in Pennsylvania, 2021Every river flood warning in 2021
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.