Alert archive / New Jersey / Areal Flood Warnings in 2011

Areal Flood Warning 9, NWS Philadelphia/Mount Holly

March 7, 2011Monroe County, Pennsylvania; Sussex County, Warren County, New Jersey

NWS Philadelphia/Mount Holly issued this areal flood warning at Mar 7, 2011, 6:19 PM EST for Monroe County, Pennsylvania; Sussex County, Warren County, New Jersey. It was in force for 5 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 7, 2011, 6:19 PM EST (23:19 UTC)
Expired
Mar 7, 2011, 11:30 PM EST
In force
5 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

Counties Sussex County, NJ, Warren County, NJ, Monroe County, PA

The radar

The Philadelphia radar (KDIX), 133 km from the middle of the area, began a volume at 23:22 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 nearest sounding before it

Brookhaven, NY (KOKX), launched 12:00Z, 11.3 hours before the alert went out and 174 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 12:00Z on 2011-03-07Temperature 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 12:00Z on 2011-03-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -45 square meters per square second.1939587897117136Sfc1 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
473 m above ground
0-6 km bulk shear
79 kt
0-1 km storm-relative helicity
-45 m²/s²
0-3 km storm-relative helicity
77 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.

405 
WGUS41 KPHI 072319
FLWPHI

BULLETIN - IMMEDIATE BROADCAST REQUESTED
FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
619 PM EST MON MAR 7 2011

NJC037-041-PAC089-080915-
/O.NEW.KPHI.FA.W.0009.110307T2319Z-110308T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SUSSEX NJ-WARREN NJ-MONROE PA-
619 PM EST MON MAR 7 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLOOD WARNING FOR...
  WEST CENTRAL SUSSEX COUNTY IN NORTHWEST NEW JERSEY...
  NORTH CENTRAL WARREN COUNTY IN NORTHWEST NEW JERSEY...
  EXTREME EAST CENTRAL MONROE COUNTY IN NORTHEAST PENNSYLVANIA...

* UNTIL 415 AM EST TUESDAY

* AT 616 PM EST FLAT BROOK AT FLATBROOKVILLE WAS AT 7.0 FEET AND 
FALLING. FLAT BROOK CRESTED EARLIER THIS AFTERNOON AND WILL SLOWLY 
FALL BELOW FLOOD STAGE OVERNIGHT. FLOOD STAGE IS 6.0 FEET. THEREFORE 
THE FLOOD WARNING HAS BEEN EXTENDED FOR THE AREA.

A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED.

LAT...LON 4110 7472 4092 7494 4102 7505 4107 7499
      4107 7497 4109 7499 4110 7499 4112 7495
      4119 7488

$$

ROBERTSON
2 follow-up statements
466 
WGUS81 KPHI 080036
FLSPHI

FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
736 PM EST MON MAR 7 2011

PAC089-080044-
/O.CAN.KPHI.FA.W.0009.000000T0000Z-110308T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONROE PA-
736 PM EST MON MAR 7 2011

...THE FLOOD WARNING HAS BEEN CANCELLED FOR EXTREME EAST CENTRAL
MONROE COUNTY...

LAT...LON 4110 7472 4092 7494 4102 7504 4106 7499
      4107 7495 4109 7497 4110 7499 4112 7495
      4119 7488

$$

NJC037-041-080915-
/O.CON.KPHI.FA.W.0009.000000T0000Z-110308T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SUSSEX NJ-WARREN NJ-
736 PM EST MON MAR 7 2011

...THE FLOOD WARNING REMAINS IN EFFECT UNTIL 415 AM EST TUESDAY FOR
NORTH CENTRAL WARREN AND WEST CENTRAL SUSSEX COUNTIES...

AT 734 PM EST FLAT BROOK AT FLATBROOKVILLE WAS AT 6.8 FEET AND 
FALLING. FLAT BROOK CRESTED EARLIER THIS AFTERNOON AND WILL SLOWLY 
FALL BELOW FLOOD STAGE OVERNIGHT. FLOOD STAGE IS 6.0 FEET. 

A FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR HAS BEEN REPORTED.

LAT...LON 4110 7472 4092 7494 4102 7504 4106 7499
      4107 7495 4109 7497 4110 7499 4112 7495
      4119 7488

$$

ROBERTSON
002 
WGUS81 KPHI 080430
FLSPHI

FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1130 PM EST MON MAR 7 2011

NJC037-041-080438-
/O.CAN.KPHI.FA.W.0009.000000T0000Z-110308T0915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SUSSEX NJ-WARREN NJ-
1130 PM EST MON MAR 7 2011

...THE FLOOD WARNING HAS BEEN CANCELLED FOR NORTH CENTRAL WARREN AND
WEST CENTRAL SUSSEX COUNTIES...

THE FLAT BROOK HAS FALLEN BELOW FLOOD STAGE. GAGE READINGS
ALONG THE PEQUEST RIVER AND PAULINS KILL HAVE ALSO CRESTED. PLEASE
BE WARY OF ANY RESIDUAL UNTREATED WATER LEFT PONDING OVERNIGHT AS IT 
WILL FREEZE AND CAUSE SLICK TRAVELING CONDITIONS.

LAT...LON 4110 7472 4092 7494 4102 7504 4106 7499
      4107 7495 4109 7497 4110 7499 4112 7495
      4119 7488

$$
 
TFG

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 6, 9:30 PM ESTAreal Flood AdvisoryPHIBucks, Chester, Delaware, Montgomery, Philadelphia7 hr
Mar 6, 9:31 PM ESTAreal Flood WarningPHICarbon, Monroe6 hr
Mar 6, 10:11 PM ESTAreal Flood WarningPHIChester, Delaware, Montgomery, Philadelphia9 hr
Mar 6, 11:29 PM ESTAreal Flood AdvisoryPHIBerks5 hr
Mar 7, 1:25 AM ESTRiver Flood WarningPHIBucks9 hr
Mar 7, 3:18 AM ESTAreal Flood AdvisoryPHIMonroe3 hr
Mar 7, 3:55 AM ESTRiver Flood WarningPHIMonroe5 hr
Mar 7, 8:52 AM ESTRiver Flood WarningPHINorthampton17 hr
Mar 7, 8:52 AM ESTRiver Flood WarningPHIBucks17 hr
Mar 7, 8:55 AM ESTRiver Flood WarningPHIMonroe, Northampton11 hr
Mar 6, 7:03 PM ESTAreal Flood AdvisoryPHIBurlington4 hr
Mar 6, 7:08 PM ESTSpecial Weather StatementPHIMiddlesex, Somerset67 min
Mar 6, 7:11 PM ESTSpecial Weather StatementPHIAtlantic, Burlington, Ocean64 min
Mar 6, 8:02 PM ESTSpecial Weather StatementPHIMiddlesex, Monmouth, Ocean58 min
Mar 6, 8:38 PM ESTSpecial Weather StatementPHIMonmouth52 min
Mar 6, 10:21 PM ESTAreal Flood WarningPHISomerset24 hr
Mar 6, 10:31 PM ESTAreal Flood AdvisoryPHIBurlington, Middlesex, Monmouth, Ocean6 hr
Mar 6, 10:40 PM ESTRiver Flood WarningPHIMorris, Passaic46 hr
Mar 6, 10:44 PM ESTRiver Flood WarningPHIBergen, Morris, Passaic39 hr
Mar 6, 10:50 PM ESTRiver Flood WarningPHIMorris, Passaic43 hr
Mar 6, 11:45 PM ESTAreal Flood AdvisoryPHISussex, Warren6 hr
Mar 7, 1:01 AM ESTRiver Flood WarningPHIMorris43 hr
Mar 7, 1:01 AM ESTRiver Flood WarningPHIMorris7 days
Mar 7, 4:03 AM ESTRiver Flood WarningPHISomerset6 hr
Mar 7, 4:03 AM ESTRiver Flood WarningPHIMiddlesex, Somerset17 hr
Mar 7, 4:03 AM ESTRiver Flood WarningPHIMiddlesex, Somerset17 hr
Mar 7, 4:10 AM ESTRiver Flood WarningPHIEssex, Morris, Passaic41 days
Mar 7, 4:10 AM ESTRiver Flood WarningPHIEssex, Passaic41 days
Mar 7, 4:46 AM ESTAreal Flood WarningPHISussex, Warren14 hr
Mar 7, 9:28 AM ESTRiver Flood WarningPHISomerset19 hr

Nearby

Areal Flood Warnings in New Jersey, 2011Areal Flood Warnings in Pennsylvania, 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; radar from the NEXRAD Level II archive.