Alert archive / Pennsylvania / River Flood Warnings in 2008

River Flood Warning 47, NWS Philadelphia/Mount Holly

December 12, 2008Bucks County, Pennsylvania

NWS Philadelphia/Mount Holly issued this river flood warning at Dec 12, 2008, 7:45 AM EST for Bucks County, Pennsylvania. It took effect at Dec 12, 2008, 10:15 AM EST. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued: Dec 12, 2008, 7:45 AM EST (12:45 UTC)
In effect from: Dec 12, 2008, 10:15 AM EST
Expired: Dec 12, 2008, 3:14 PM EST
In force: 5 hr
Issued by: NWS Philadelphia/Mount Holly
Flood severity: Moderate

County Bucks County, PA

The radar

The Philadelphia radar (KDIX), 73 km from the middle of the area, began a volume at 12:49 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 7.44 ft at Dec 12, 2008, 12:00 AM 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 121245
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
745 AM EST FRI DEC 12 2008

...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

...MODERATE FLOODING IS FORECAST FOR THE NESHAMINY CREEK...

PAC017-121845-
/O.NEW.KPHI.FL.W.0047.081212T1515Z-081213T0104Z/
/LNGP1.2.ER.081212T1515Z.081212T1600Z.081212T1904Z.NO/
745 AM EST FRI DEC 12 2008

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A 

* FLOOD WARNING FOR 
  THE NESHAMINY CREEK AT LANGHORNE.
* UNTIL THIS EVENING...OR UNTIL THE WARNING IS CANCELLED.
* AT  7:15 AM FRIDAY THE STAGE WAS 9.0 FEET. 
* MODERATE FLOODING IS FORECAST. 
* FLOOD STAGE IS 9.0 FEET. 
* FORECAST...CONTINUE TO RISE AND CREST NEAR 12 FEET BY LATE THIS
  MORNING. THE CREEK WILL FALL BELOW FLOOD STAGE LATE THIS
  AFTERNOON.
$$

                   FLD      OBSERVED          FORECAST
 LOCATION          STG    STG  DAY TIME       CREST

NESHAMINY CREEK
  LANGHORNE        9.0    9.0  FRI 7 AM    12.0  FRI 11 AM

&&

1 follow-up statement

000 
WGUS81 KPHI 122014
FLSPHI
FLOOD STATEMENT 
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
314 PM EST FRI DEC 12 2008

...THE FLOOD WARNING IS CANCELLED FOR THE FOLLOWING RIVERS IN 
PENNSYLVANIA...
 
  NESHAMINY CREEK AT LANGHORNE AFFECTING BUCKS COUNTY


PAC017-122044-
/O.CAN.KPHI.FL.W.0047.000000T0000Z-081213T0104Z/
/LNGP1.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.NO/
314 PM EST FRI DEC 12 2008

* AT  2:46 PM FRIDAY THE STAGE WAS ESTIMATED AT 8.5 FEET. 
* WATER LEVELS CONTINUE TO FALL AND NO ADDITIONAL FLOODING IS 
  EXPECTED.
  
* FLOOD STAGE IS 9.0 FEET. 

$$

                   FLD      OBSERVED          FORECAST
 LOCATION          STG    STG  DAY TIME       CREST

NESHAMINY CREEK
  LANGHORNE        9.0    0.33  FRI 3 PM     5.7  FRI 7 PM 

&&

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Dec 11, 9:32 PM EST	Areal Flood Warning	PHI	Bucks, Chester, Delaware, Montgomery, Philadelphia	12 hr
Dec 11, 9:47 PM EST	Areal Flood Advisory	PHI	Berks, Bucks, Chester, Lehigh, Montgomery	6 hr
Dec 12, 12:55 AM EST	Areal Flood Warning	PHI	Berks, Bucks, Chester, Lehigh, Montgomery	12 hr
Dec 12, 2:12 AM EST	River Flood Warning	PHI	Berks, Schuylkill	13 hr
Dec 12, 2:41 AM EST	River Flood Warning	PHI	Montgomery	10 hr
Dec 12, 2:48 AM EST	Areal Flood Advisory	PHI	Carbon, Monroe, Northampton	6 hr
Dec 12, 3:46 AM EST	River Flood Warning	PHI	Chester	10 hr
Dec 12, 8:34 AM EST	Areal Flood Advisory	PHI	Bucks, Carbon, Lehigh, Monroe, Northampton	3 hr
Dec 12, 9:00 AM EST	Coastal Flood Advisory	PHI	Delaware, Philadelphia	6 hr
Dec 12, 9:02 AM EST	River Flood Warning	PHI	Montgomery, Philadelphia	6 hr
Dec 12, 11:17 AM EST	River Flood Warning	PHI	Chester, Delaware	9 hr

Nearby

River Flood Warnings in Pennsylvania, 2008 Every river flood warning in 2008

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.