Alert archive / New Jersey / Areal Flood Warnings in 2011

Areal Flood Warning 13, NWS Philadelphia/Mount Holly

March 11, 20119 counties in New Jersey

NWS Philadelphia/Mount Holly issued this areal flood warning at Mar 11, 2011, 1:08 AM EST for 9 counties in New Jersey. It was in force for 16 hr. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Mar 11, 2011, 1:08 AM EST (06:08 UTC)
Expired
Mar 11, 2011, 5:00 PM EST
In force
16 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

Counties Atlantic County, NJ, Burlington County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Ocean County, NJ, Somerset County, NJ

The nearest sounding before it

Brookhaven, NY (KOKX), launched 00:00Z, 6.1 hours before the alert went out and 138 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Brookhaven, NY at 00:00Z on 2011-03-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Brookhaven, NY at 00:00Z on 2011-03-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 483 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
597 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
483 m²/s²
0-3 km storm-relative helicity
491 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

180 
WGUS41 KPHI 110608
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
108 AM EST FRI MAR 11 2011

NJC001-005-019-021-023-025-027-029-035-111400-
/O.NEW.KPHI.FA.W.0013.110311T0608Z-110311T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MORRIS NJ-HUNTERDON NJ-SOMERSET NJ-MERCER NJ-MIDDLESEX NJ-MONMOUTH 
NJ-OCEAN NJ-ATLANTIC NJ-BURLINGTON NJ-
108 AM EST FRI MAR 11 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS IN...
  SOUTHEASTERN MORRIS COUNTY IN NORTHERN NEW JERSEY...
  EXTREME NORTHEASTERN HUNTERDON COUNTY IN NORTHWEST NEW JERSEY...
  SOMERSET COUNTY IN NORTHERN NEW JERSEY...
  EASTERN MERCER COUNTY IN CENTRAL NEW JERSEY...
  MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...
  MONMOUTH COUNTY IN CENTRAL NEW JERSEY...
  OCEAN COUNTY IN SOUTHERN NEW JERSEY...
  EAST CENTRAL ATLANTIC COUNTY IN SOUTHERN NEW JERSEY...
  EASTERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 900 AM EST

* AT 107 AM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR SHOWED 
MODERATE TO HEAVY RAIN ACROSS MUCH OF THE WARNED AREA. UP TO THIS 
POINT, ABOUT ONE TO ONE AND A HALF INCHES OF RAIN HAS FALLEN. 
ANOTHER ONE TO ONE AND A HALF INCHES ARE EXPECTED THROUGH THE 
OVERNIGHT. WITH NEARLY SATURATED SOILS, MUCH OF THE RAIN IS EXPECTED 
TO RUNOFF RATHER THAN SOAK INTO THE GROUND. THIS WILL CAUSE FLOODING 
IN LOW LYING AND POOR DRAINAGE AREAS AS WELL AS GET SMALL CREEKS AND 
STREAMS OUT OF THEIR BANKS. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

&&

LAT...LON 3974 7409 3954 7423 3949 7432 3953 7434
      3954 7445 3975 7438 4029 7477 4072 7476
      4088 7445 4083 7433 4067 7445 4065 7439
      4059 7444 4060 7423 4057 7420 4047 7426
      4042 7399 4047 7401 4047 7399 4041 7396

$$

KRUZDLO
2 follow-up statements
709 
WGUS81 KPHI 111038
FLSPHI

FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
538 AM EST FRI MAR 11 2011

NJC001-005-025-029-111048-
/O.CAN.KPHI.FA.W.0013.000000T0000Z-110311T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONMOUTH NJ-OCEAN NJ-ATLANTIC NJ-BURLINGTON NJ-
538 AM EST FRI MAR 11 2011

...THE FLOOD WARNING HAS BEEN CANCELLED FOR URBAN AREAS AND SMALL
STREAMS IN EASTERN BURLINGTON...EAST CENTRAL ATLANTIC...OCEAN AND
MONMOUTH COUNTIES...

LAT...LON 4057 7420 4055 7424 4047 7427 4045 7422
      4027 7441 4025 7448 4017 7458 4017 7462
      4029 7477 4072 7476 4088 7445 4083 7433
      4067 7445 4065 7439 4059 7444 4059 7429
      4060 7423

$$

NJC019-021-023-027-035-111400-
/O.CON.KPHI.FA.W.0013.000000T0000Z-110311T1400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MORRIS NJ-HUNTERDON NJ-SOMERSET NJ-MERCER NJ-MIDDLESEX NJ-
538 AM EST FRI MAR 11 2011

...THE FLOOD WARNING REMAINS IN EFFECT UNTIL 900 AM EST FOR URBAN
AREAS AND SMALL STREAMS IN MIDDLESEX...EASTERN MERCER...SOMERSET...
EXTREME NORTHEASTERN HUNTERDON AND SOUTHEASTERN MORRIS COUNTIES...

AT 538 AM EST...ABOUT ONE TO TWO AND A HALF INCHES OF RAIN HAS 
FALLEN. WITH NEARLY SATURATED SOILS, MUCH OF THE RAIN IS EXPECTED TO 
RUNOFF RATHER THAN SOAK INTO THE GROUND. THIS WILL CAUSE FLOODING IN 
LOW LYING AND POOR DRAINAGE AREAS AS WELL AS GET SMALL CREEKS AND 
STREAMS OUT OF THEIR BANKS.  
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

&&

LAT...LON 4057 7420 4055 7424 4047 7427 4045 7422
      4027 7441 4025 7448 4017 7458 4017 7462
      4029 7477 4072 7476 4088 7445 4083 7433
      4067 7445 4065 7439 4059 7444 4059 7429
      4060 7423

$$

KRUZDLO
845 
WGUS41 KPHI 111357
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
857 AM EST FRI MAR 11 2011

NJC019-021-023-027-035-112200-
/O.EXT.KPHI.FA.W.0013.000000T0000Z-110311T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MORRIS NJ-HUNTERDON NJ-SOMERSET NJ-MERCER NJ-MIDDLESEX NJ-
857 AM EST FRI MAR 11 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE

* FLOOD WARNING FOR URBAN AREAS AND SMALL STREAMS IN...
  SOUTHEASTERN MORRIS COUNTY IN NORTHERN NEW JERSEY...
  NORTHEASTERN HUNTERDON COUNTY IN NORTHWEST NEW JERSEY...
  SOMERSET COUNTY IN NORTHERN NEW JERSEY...
  EASTERN MERCER COUNTY IN CENTRAL NEW JERSEY...
  MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...

* UNTIL 500 PM EST FRIDAY

* AT 855 AM EST SMALL STREAMS WERE RUNNING HIGH IN RESPONSE TO HEAVY 
  RAIN OVERNIGHT. THE FLOOD WARNING HAS BEEN EXTENDED THROUGH THE    
  AFTERNOON HOURS TO ACCOUNT FOR FLOODING THAT IS EXPECTED TO        
  CONTINUE UNTIL THESE SMALL STREAMS DRAIN.

A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED.
STREAM RISES WILL BE SLOW AND FLASH FLOODING IS NOT EXPECTED.
HOWEVER...ALL INTERESTED PARTIES SHOULD TAKE NECESSARY PRECAUTIONS
IMMEDIATELY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS
SAFELY. MOVE TO HIGHER GROUND.

&&

LAT...LON 4057 7420 4055 7424 4047 7427 4045 7422
      4027 7441 4025 7448 4017 7458 4017 7462
      4029 7477 4072 7476 4088 7445 4083 7433
      4067 7445 4065 7439 4059 7444 4059 7429
      4060 7423

$$

JJM

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 10, 7:00 PM ESTAreal Flood AdvisoryPHIHunterdon, Mercer, Middlesex, Monmouth, Morris, Ocean and 1 more6 hr
Mar 10, 7:39 PM ESTAreal Flood WarningPHIMorris24 hr
Mar 10, 8:08 PM ESTRiver Flood WarningPHIMorris, Passaic59 hr
Mar 10, 9:39 PM ESTRiver Flood WarningPHIMercer12 hr
Mar 10, 9:45 PM ESTRiver Flood WarningPHIMorris, Passaic63 hr
Mar 10, 9:45 PM ESTRiver Flood WarningPHIBergen, Morris, Passaic46 hr
Mar 10, 10:26 PM ESTRiver Flood WarningPHISomerset29 hr
Mar 10, 10:32 PM ESTRiver Flood WarningPHIHunterdon, Somerset20 hr
Mar 10, 10:32 PM ESTRiver Flood WarningPHISomerset12 hr
Mar 10, 10:32 PM ESTRiver Flood WarningPHIMiddlesex, Somerset23 hr
Mar 10, 10:32 PM ESTRiver Flood WarningPHIMiddlesex, Somerset23 hr
Mar 10, 10:35 PM ESTRiver Flood WarningPHIMorris, Somerset22 hr
Mar 10, 10:35 PM ESTRiver Flood WarningPHIMorris, Somerset66 hr
Mar 10, 10:36 PM ESTRiver Flood WarningPHIPassaic4 days
Mar 10, 11:47 PM ESTAreal Flood WarningPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 6 more12 hr
Mar 11, 1:43 AM ESTSmall Craft AdvisoryPHI60 hr
Mar 11, 3:17 AM ESTRiver Flood WarningPHISussex, Warren31 hr
Mar 11, 3:17 AM ESTRiver Flood WarningPHIHunterdon, Warren40 hr
Mar 11, 3:17 AM ESTRiver Flood WarningPHIHunterdon, Mercer40 hr
Mar 11, 3:17 AM ESTRiver Flood WarningPHIHunterdon38 hr
Mar 11, 3:17 AM ESTRiver Flood WarningPHIHunterdon38 hr
Mar 11, 3:17 AM ESTRiver Flood WarningPHIHunterdon, Mercer31 hr
Mar 11, 3:17 AM ESTRiver Flood WarningPHIMercer38 hr

Nearby

Areal Flood Warnings in New Jersey, 2011Every areal 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; the sounding from the Mesonet's radiosonde archive.