Alert archive / Pennsylvania / River Flood Warnings in 2009
River Flood Warning 23, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this river flood warning at Dec 9, 2009, 8:25 AM EST for Delaware County, Pennsylvania. It was in force for 5 hr.
The area
The counties it named.
The facts
- Issued
- Dec 9, 2009, 8:25 AM EST (13:25 UTC)
- Expired
- Dec 9, 2009, 1:37 PM EST
- In force
- 5 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Flood severity
- Minor
County Delaware County, PA
The radar
The Philadelphia radar (KDIX), 84 km from the middle of the area, began a volume at 13:28 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 9.72 ft at Dec 9, 2009, 10:00 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, in the capitals the NWS used until 2016.
000
WGUS41 KPHI 091325
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
825 AM EST WED DEC 09 2009
...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.
&&
PAC045-091925-
/O.NEW.KPHI.FL.W.0023.091209T1325Z-091209T2225Z/
/CHSP1.1.ER.091209T1303Z.091209T1400Z.091209T1625Z.NO/
825 AM EST WED DEC 09 2009
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLOOD WARNING FOR
THE CHESTER CREEK NEAR CHESTER.
* UNTIL THIS AFTERNOON...OR UNTIL THE WARNING IS CANCELLED.
* AT 7:46 AM WEDNESDAY THE STAGE WAS 7.6 FEET.
* MINOR FLOODING IS FORECAST.
* FLOOD STAGE IS 8.0 FEET.
* FORECAST...RISE TO NEAR 9.3 FEET LATE THIS MORNING. THE RIVER WILL
FALL BELOW FLOOD STAGE BY LATE THIS MORNING.
* IMPACT...AT 10.5 FEET...FLOOD DAMAGE BEGINS IN THE CITY OF CHESTER.
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
CHESTER CREEK
CHESTER 8.0 7.61 WED 8 AM 9.3 WED 9 AM
&&2 follow-up statements
000
WGUS41 KPHI 091336
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
836 AM EST WED DEC 09 2009
...FORECAST FLOODING CHANGED FROM MINOR TO MODERATE SEVERITY FOR THE
FOLLOWING RIVERS IN PENNSYLVANIA...
CHESTER CREEK NEAR CHESTER AFFECTING DELAWARE COUNTY
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK.
&&
PAC045-091936-
/O.EXT.KPHI.FL.W.0023.000000T0000Z-091209T2348Z/
/CHSP1.2.ER.091209T1254Z.091209T1600Z.091209T1748Z.NO/
836 AM EST WED DEC 09 2009
...FORECAST FLOODING INCREASED FROM MINOR TO MODERATE SEVERITY...
THE FLOOD WARNING CONTINUES FOR
THE CHESTER CREEK NEAR CHESTER.
* UNTIL THIS EVENING...OR UNTIL THE WARNING IS CANCELLED.
* AT 8:15 AM WEDNESDAY THE STAGE WAS 8.6 FEET.
* MINOR FLOODING IS OCCURRING AND MODERATE FLOODING IS FORECAST.
* FLOOD STAGE IS 8.0 FEET.
* FORECAST...THE RIVER WILL CONTINUE RISING TO NEAR 11.2 FEET BY LATE
THIS MORNING. THE RIVER WILL FALL BELOW FLOOD STAGE THIS AFTERNOON.
* IMPACT...AT 10.5 FEET...FLOOD DAMAGE BEGINS IN THE CITY OF CHESTER.
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
CHESTER CREEK
CHESTER 8.0 8.65 WED 8 AM 11.2 WED 11 AM
&&000
WGUS81 KPHI 091837
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
137 PM EST WED DEC 09 2009
...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.
&&
PAC045-091907-
/O.CAN.KPHI.FL.W.0023.000000T0000Z-091209T2348Z/
/CHSP1.1.ER.091209T1254Z.091209T1501Z.091209T1731Z.NO/
137 PM EST WED DEC 09 2009
THE FLOOD WARNING IS CANCELLED FOR
THE CHESTER CREEK NEAR CHESTER.
* AT 1:15 PM WEDNESDAY THE STAGE WAS 7.5 FEET.
* FELL BELOW FLOOD STAGE AT 12:31 PM WEDNESDAY.
* FLOOD STAGE IS 8.0 FEET.
* FORECAST...THE RIVER WILL CONTINUE TO FALL THROUGH TOMORROW
MORNING.
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
CHESTER CREEK
CHESTER 8.0 7.53 WED 1 PM 6.0 WED 2 PM
&&The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 9, 6:53 AM EST | Areal Flood Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 8 hr |
| Dec 9, 7:47 AM EST | Areal Flood Warning | PHI | Bucks, Chester, Montgomery | 7 hr |
| Dec 9, 8:16 AM EST | River Flood Warning | PHI | Bucks | 12 hr |
| Dec 9, 9:58 AM EST | Areal Flood Advisory | PHI | Berks, Lehigh, Northampton | 3 hr |
| Dec 9, 10:19 AM EST | River Flood Warning | PHI | Chester | 7 hr |
| Dec 9, 10:40 AM EST | River Flood Warning | PHI | Chester, Delaware | 13 hr |
| Dec 9, 11:36 AM EST | River Flood Warning | PHI | Montgomery | 5 hr |
| Dec 9, 12:00 PM EST | Wind Advisory | PHI | Berks, Carbon, Delaware, Lehigh, Monroe, Northampton and 1 more | 33 hr |
| Dec 9, 1:15 PM EST | Areal Flood Warning | PHI | Berks | 4 hr |
| Dec 9, 2:26 PM EST | Coastal Flood Advisory | PHI | Delaware, Philadelphia | 7 hr |
| Dec 9, 2:55 PM EST | Areal Flood Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 7 hr |
Nearby
River Flood Warnings in Pennsylvania, 2009Every river flood warning in 2009
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.