Alert archive / Pennsylvania / River Flood Warnings in 2009
River Flood Warning 35, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this river flood warning at Dec 26, 2009, 2:42 PM EST for Bucks County, Pennsylvania. It took effect at Dec 26, 2009, 6:08 PM EST. It was in force for 16 hr.
The area
The counties it named.
The facts
- Issued
- Dec 26, 2009, 2:42 PM EST (19:42 UTC)
- In effect from
- Dec 26, 2009, 6:08 PM EST
- Expired
- Dec 27, 2009, 10:13 AM EST
- In force
- 16 hr
- Issued by
- NWS Philadelphia/Mount Holly
- Flood severity
- Minor
County Bucks County, PA
The radar
The Philadelphia radar (KDIX), 73 km from the middle of the area, began a volume at 19:44 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 Neshaminy Creek near Langhorne (LNGP1). The gauge peaked at 8.29 ft at Dec 26, 2009, 3:00 PM EST.
- Action stage
- 8 ft
- Minor stage
- 9 ft
- Moderate stage
- 12 ft
- Major stage
- 14 ft
This gauge today: stage, forecast and historic crests
Stage from the USGS instantaneous record for site 01465500, 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 261942
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
242 PM EST SAT DEC 26 2009
...THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A FLOOD
WARNING FOR THE FOLLOWING RIVERS IN PENNSYLVANIA...
NESHAMINY CREEK AT LANGHORNE AFFECTING BUCKS COUNTY
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK.
&&
PAC017-270142-
/O.NEW.KPHI.FL.W.0035.091226T2308Z-091227T0651Z/
/LNGP1.1.ER.091226T2308Z.091227T0000Z.091227T0051Z.NO/
242 PM EST SAT DEC 26 2009
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* FLOOD WARNING FOR
THE NESHAMINY CREEK AT LANGHORNE.
* FROM THIS EVENING TO LATE TONIGHT...OR UNTIL THE WARNING IS CANCELLED.
* AT 2:15 PM SATURDAY THE STAGE WAS 8.1 FEET.
* MINOR FLOODING IS FORECAST.
* FLOOD STAGE IS 9.0 FEET.
* FORECAST...RISE ABOVE FLOOD STAGE EARLY THIS EVENING AND CONTINUE TO
RISE TO NEAR 9.2 FEET LATE THIS EVENING. THE RIVER WILL FALL BELOW FLOOD
STAGE AROUND MIDNIGHT.
* IMPACT...AT 9.0 FEET...FLOOD STAGE REACHED WITH SOME HOMES FLOODED IN
LANGHORNE TERRACE
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
NESHAMINY CREEK
LANGHORNE 9.0 8.09 SAT 2 PM 9.2 SAT 7 PM
&&1 follow-up statement
000
WGUS81 KPHI 270125
FLSPHI
FLOOD STATEMENT
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
825 PM EST SAT DEC 26 2009
...THE FLOOD WARNING CONTINUES FOR THE FOLLOWING RIVERS IN
PENNSYLVANIA...
NESHAMINY CREEK AT LANGHORNE AFFECTING BUCKS COUNTY
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE
WATER MAY BE DEEPER THAN YOU THINK.
&&
PAC017-271125-
/O.EXT.KPHI.FL.W.0035.000000T0000Z-091227T1513Z/
/LNGP1.1.ER.091227T0208Z.091227T0300Z.091227T0913Z.NO/
825 PM EST SAT DEC 26 2009
THE FLOOD WARNING CONTINUES FOR
THE NESHAMINY CREEK AT LANGHORNE.
* UNTIL SUNDAY MORNING...OR UNTIL THE WARNING IS CANCELLED.
* THE LATEST STAGE WAS UNAVAILABLE DUE TO A GAGE MALFUNCTION.
* MINOR FLOODING IS FORECAST.
* FLOOD STAGE IS 9.0 FEET.
* FORECAST...RISE TO NEAR 9.7 FEET AROUND MIDNIGHT. THE RIVER WILL FALL BELOW
FLOOD STAGE AROUND DAYBREAK SUNDAY.
* IMPACT...AT 10.0 FEET...AT THIS LEVEL SOME HOMES IN THE AREA OF THE
LANGHORNE GAGE ARE EVACUATED
$$
FLD OBSERVED FORECAST
LOCATION STG STG DAY TIME CREST
NESHAMINY CREEK
LANGHORNE 9.0 7.44 SAT 7 PM 9.7 SAT 10 PM
&&The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 26, 7:42 AM EST | Coastal Flood Advisory | PHI | Delaware, Philadelphia | 15 hr |
| Dec 26, 10:28 AM EST | Areal Flood Warning | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 20 hr |
| Dec 26, 12:31 PM EST | River Flood Warning | PHI | Chester | 12 hr |
| Dec 26, 12:34 PM EST | River Flood Warning | PHI | Delaware | 9 hr |
| Dec 26, 2:45 PM EST | River Flood Warning | PHI | Chester, Delaware | 17 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.