Alert archive / Pennsylvania / River Flood Warnings in 2018
River Flood Warning 85, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this river flood warning at Dec 21, 2018, 5:10 AM EST for Delaware County, Pennsylvania. It took effect at Dec 21, 2018, 6:17 AM EST. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Dec 21, 2018, 5:10 AM EST (10:10 UTC)
- In effect from
- Dec 21, 2018, 6:17 AM EST
- Expired
- Dec 21, 2018, 10:29 AM EST
- In force
- 4 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 10:10 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 7.70 ft at Dec 21, 2018, 6:00 AM EST.
- 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.
208
WGUS41 KPHI 211010
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Flood Warning
National Weather Service Mt Holly NJ
510 AM EST Fri Dec 21 2018
...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
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...Do not attempt to drive through flooded areas. The water may be
deeper than you think.
&&
PAC045-211610-
/O.NEW.KPHI.FL.W.0085.181221T1117Z-181222T0105Z/
/CHSP1.1.ER.181221T1117Z.181221T1500Z.181221T1905Z.NO/
510 AM EST Fri Dec 21 2018
The National Weather Service in Mount Holly NJ has issued a
* Flood Warning for
The Chester Creek at Chester.
* until this evening...Or until the warning is cancelled.
* At 5:01 AM Friday the stage was 7.0 feet.
* Flood stage is 8.0 feet.
* Minor flooding is forecast.
* Forecast...Rise above flood stage by this morning and continue to rise to near
9.8 feet by late this morning. The river will fall below flood stage by this
afternoon.
* 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 Mar 13
2010.
&&
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
Chester Creek
Chester 8.0 7.01 Fri 5 AM 9.8 Fri 10 AM
&&
LAT...LON 3991 7542 3985 7534 3981 7540 3987 7547
$$1 follow-up statement
013
WGUS81 KPHI 211529
FLSPHI
Flood Statement
National Weather Service Mt Holly NJ
1029 AM EST Fri Dec 21 2018
...The Flood Warning is cancelled for the following rivers in
Pennsylvania...
Chester Creek Near Chester affecting Delaware County
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...Do not attempt to drive through flooded areas.
The water may be deeper than you think.
&&
PAC045-211559-
/O.CAN.KPHI.FL.W.0085.000000T0000Z-181222T0105Z/
/CHSP1.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
1029 AM EST Fri Dec 21 2018
The Flood Warning is cancelled for
The Chester Creek at Chester.
* At 10:16 AM Friday the stage was 6.2 feet.
* Flood stage is 8.0 feet.
* Forecast...The river crested below flood stage at 7.8 feet and
will fall to 3.5 feet by tomorrow morning.
* Impact...At 7.0 feet...The creek floods adjacent open land.
&&
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
Chester Creek
Chester 8.0 6.22 Fri 10 AM Crested
&&
LAT...LON 3991 7542 3985 7534 3981 7540 3987 7547
$$
KruzdloThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 21, 3:44 AM EST | River Flood Warning | PHI | Chester | 9 hr |
| Dec 21, 4:02 AM EST | Areal Flood Warning | PHI | Berks, Chester, Delaware, Montgomery, Philadelphia | 4 hr |
| Dec 21, 4:09 AM EST | Areal Flood Warning | PHI | Bucks, Lehigh, Northampton | 16 hr |
| Dec 21, 4:27 AM EST | Areal Flood Warning | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 8 hr |
| Dec 21, 4:36 AM EST | Areal Flood Warning | PHI | Bucks, Montgomery, Philadelphia | 7 hr |
| Dec 21, 5:20 AM EST | River Flood Warning | PHI | Chester, Delaware | 14 hr |
| Dec 21, 8:04 AM EST | Areal Flood Warning | PHI | Berks, Chester, Delaware, Montgomery, Philadelphia | 7 hr |
| Dec 21, 8:51 AM EST | River Flood Warning | PHI | Bucks | 6 hr |
| Dec 21, 12:15 PM EST | Areal Flood Warning | PHI | Berks, Carbon, Lehigh, Monroe, Northampton | 4 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.