Alert archive / New Jersey / River Flood Warnings in 2011

River Flood Warning 218, NWS Philadelphia/Mount Holly

December 7, 2011Mercer County, New Jersey

NWS Philadelphia/Mount Holly issued this river flood warning at Dec 7, 2011, 10:12 PM EST for Mercer County, New Jersey. It took effect at Dec 8, 2011, 12:00 AM EST. It was in force for 5 hr.

The area

The counties it named.

The facts

Issued
Dec 7, 2011, 10:12 PM EST (03:12 UTC)
In effect from
Dec 8, 2011, 12:00 AM EST
Expired
Dec 8, 2011, 5:03 AM EST
In force
5 hr
Issued by
NWS Philadelphia/Mount Holly
Flood severity
Minor

County Mercer County, NJ

The radar

The Philadelphia radar (KDIX), 45 km from the middle of the area, began a volume at 03:12 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 Assunpink Creek at Trenton (TACN4). The gauge peaked at 8.44 ft at Dec 8, 2011, 4:00 AM EST.

actionminormoderate24681012/0812/09
Action stage
7 ft
Minor stage
8.5 ft
Moderate stage
9.5 ft
Major stage
11 ft

This gauge today: stage, forecast and historic crests

Stage from the USGS instantaneous record for site 01464000, 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.

608 
WGUS41 KPHI 080312
FLWPHI
BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
1012 PM EST WED DEC 7 2011

...THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A FLOOD 
WARNING FOR THE FOLLOWING RIVERS IN NEW JERSEY...PENNSYLVANIA... 

  ASSUNPINK CREEK AT TRENTON AFFECTING MERCER COUNTY
  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.

&&

NJC021-080912-
/O.NEW.KPHI.FL.W.0218.111208T0500Z-111208T1200Z/
/TACN4.1.ER.111208T0500Z.111208T0500Z.111208T0600Z.UU/
1012 PM EST WED DEC 7 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A 

* FLOOD WARNING FOR 
  THE ASSUNPINK CREEK AT TRENTON.
* UNTIL THURSDAY MORNING...OR UNTIL THE WARNING IS CANCELLED.
* AT 10:00 PM WEDNESDAY THE STAGE WAS 7.2 FEET. 
* FLOOD STAGE IS 8.5 FEET. 
* MINOR FLOODING IS FORECAST. 
* FORECAST...THE RIVER IS EXPECTED TO RISE TO NEAR FLOOD STAGE AFTER 
  MIDNIGHT TONIGHT.
* IMPACT...AT 10.0 FEET...MULBERRY STREET FLOODS

$$

PAC017-080912-
/O.NEW.KPHI.FL.W.0219.111208T0545Z-111208T1234Z/
/LNGP1.1.ER.111208T0545Z.111208T0600Z.111208T0634Z.NO/
1012 PM EST WED DEC 7 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A 

* FLOOD WARNING FOR 
  THE NESHAMINY CREEK AT LANGHORNE.
* UNTIL THURSDAY MORNING...OR UNTIL THE WARNING IS CANCELLED.
* AT  9:15 PM WEDNESDAY THE STAGE WAS 6.0 FEET. 
* FLOOD STAGE IS 9.0 FEET. 
* MINOR FLOODING IS FORECAST. 
* FORECAST...RISE ABOVE FLOOD STAGE AFTER MIDNIGHT TONIGHT AND 
  CONTINUE TO RISE TO NEAR 9.2 FEET AFTER MIDNIGHT TONIGHT. THE RIVER
  WILL FALL BELOW FLOOD STAGE TOWARD MORNING.
* IMPACT...AT 9.0 FEET...FLOOD STAGE REACHED WITH SOME HOMES FLOODED IN 
  LANGHORNE TERRACE

$$

                   FLD     OBSERVED           FORECAST
 LOCATION          STG    STG  DAY TIME       CREST

ASSUNPINK CREEK
  TRENTON          8.5    7.17  WED 10 PM    8.5    THU 12 AM

NESHAMINY CREEK
  LANGHORNE        9.0    6.02  WED 9 PM     9.2    THU 1 AM 

&&
1 follow-up statement
574 
WGUS81 KPHI 081003
FLSPHI
FLOOD STATEMENT 
NATIONAL WEATHER SERVICE MT HOLLY, NEW JERSEY
503 AM EST THU DEC 8 2011

...THE FLOOD WARNING IS CANCELLED FOR THE FOLLOWING RIVERS IN NEW 
JERSEY...
 
  ASSUNPINK CREEK AT TRENTON AFFECTING MERCER COUNTY

PRECAUTIONARY/PREPAREDNESS ACTIONS...

SAFETY MESSAGE...DO NOT ATTEMPT TO DRIVE THROUGH FLOODED AREAS. THE 
WATER MAY BE DEEPER THAN YOU THINK.

&&

NJC021-081033-
/O.CAN.KPHI.FL.W.0218.000000T0000Z-111208T1200Z/
/TACN4.N.ER.000000T0000Z.000000T0000Z.000000T0000Z.UU/
503 AM EST THU DEC 8 2011

THE FLOOD WARNING IS CANCELLED FOR
  THE ASSUNPINK CREEK AT TRENTON.
* AT 4:30 AM THURSDAY THE STAGE WAS 8.4 FEET. 
* FLOOD STAGE IS 8.5 FEET. 
* FORECAST...THE RIVER CRESTED BELOW FLOOD STAGE AT 8.4 FEET.  
* IMPACT...AT 10.0 FEET...MULBERRY STREET FLOODS

$$

                   FLD     OBSERVED           FORECAST
 LOCATION          STG    STG  DAY TIME       CREST

ASSUNPINK CREEK
  TRENTON          8.5    8.38  THU 4 AM      CRESTED BELOW FLOOD STAGE 

&&

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 7, 7:10 PM ESTAreal Flood AdvisoryPHIHunterdon, Mercer, Middlesex, Morris, Somerset6 hr
Dec 7, 8:04 PM ESTAreal Flood WarningPHIHunterdon, Mercer, Middlesex, Morris, Somerset18 hr
Dec 7, 8:15 PM ESTAreal Flood WarningPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 3 more17 hr
Dec 8, 1:58 AM ESTAreal Flood WarningPHISussex, Warren5 hr
Dec 8, 4:50 AM ESTRiver Flood WarningPHISomerset31 hr
Dec 8, 5:14 AM ESTRiver Flood WarningPHIMorris, Passaic5 hr
Dec 8, 5:14 AM ESTRiver Flood WarningPHIPassaic27 hr
Dec 8, 7:01 AM ESTSmall Craft AdvisoryPHI6 hr
Dec 8, 8:05 AM ESTRiver Flood WarningPHIMiddlesex, Somerset8 hr
Dec 8, 9:47 AM ESTRiver Flood WarningPHIMiddlesex, Somerset9 hr
Dec 8, 11:36 AM ESTRiver Flood WarningPHIMorris24 hr
Dec 8, 12:45 PM ESTRiver Flood WarningPHIBergen, Morris, Passaic3 hr
Dec 8, 1:55 PM ESTAreal Flood WarningPHIMorris62 hr

Nearby

River Flood Warnings in New Jersey, 2011Every river flood warning in 2011

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.