Alert archive / New Jersey / Flash Flood Warnings in 2010

Flash Flood Warning 9, NWS Philadelphia/Mount Holly

July 14, 2010Philadelphia County, Pennsylvania; Burlington County, Camden County, Gloucester County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 14, 2010, 3:46 AM EDT for Philadelphia County, Pennsylvania; Burlington County, Camden County, Gloucester County, New Jersey. It was in force for 3 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
Jul 14, 2010, 3:46 AM EDT (07:46 UTC)
Expired
Jul 14, 2010, 6:45 AM EDT
In force
3 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

Counties Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Philadelphia County, PA

The radar

The Philadelphia radar (KDIX), 52 km from the middle of the area, began a volume at 07:46 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 00:00Z, 7.8 hours before the alert went out and 206 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 2010-07-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1359 joules per kilogram.LCLEL10008507005003002001001 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 2010-07-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 square meters per square second.193958Sfc1 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
1359 J/kg
Mixed-layer CIN
0 J/kg
Mixed-layer LCL
466 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
94 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.6

Open this sounding in Storm Lab

The text

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

872 
WGUS51 KPHI 140746
FFWPHI
NJC005-007-015-PAC101-141045-
/O.NEW.KPHI.FF.W.0009.100714T0746Z-100714T1045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
346 AM EDT WED JUL 14 2010

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  PHILADELPHIA COUNTY IN SOUTHEAST PENNSYLVANIA...
  THIS INCLUDES THE CITY OF PHILADELPHIA...
  NORTHWESTERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
  NORTHWESTERN CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF CAMDEN...
  CENTRAL GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 645 AM EDT

* AT 340 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED AN
  AREA OF VERY HEAVY RAIN MOVING INTO THE AREA. AS MUCH AS 2 INCHES OF
  RAIN MAY FALL IN THIS AREA...MOST OF WHICH RECEIVED HEAVY RAIN
  TUESDAY.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO BELLMAWR...
  WISSINOMING...TACONY...SOUTH PHILADELPHIA...ROXBOROUGH...MORRIS
  PARK...KENSINGTON...HOLMESBURG...CENTER CITY...SPRINGDALE...MOUNT
  LAUREL...GREENTREE...WILLINGBORO...RIVERSIDE...PALMYRA...NATIONAL
  PARK...MARLTON...GLOUCESTER CITY...CHERRY HILL...BURLINGTON...
  BEVERLY AND WESTVILLE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...URBAN AREAS...HIGHWAYS...STREETS AND UNDERPASSES
AS WELL AS OTHER DRAINAGE AREAS AND LOW LYING SPOTS.

BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE THE
DANGERS OF FLOODING. IF FLASH FLOODING IS OBSERVED ACT QUICKLY. MOVE
UP TO HIGHER GROUND TO ESCAPE FLOOD WATERS. DO NOT STAY IN AREAS
SUBJECT TO FLOODING WHEN WATER BEGINS RISING.

&&

LAT...LON 4010 7472 3963 7514 3982 7523 3992 7526
      3994 7525 3999 7528 4009 7504 4009 7497
      4004 7499 4003 7498 4006 7495 4007 7489
      4009 7485

$$

HAYES
1 follow-up statement
210 
WGUS71 KPHI 141037
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
637 AM EDT WED JUL 14 2010

NJC005-007-015-PAC101-141046-
/O.EXP.KPHI.FF.W.0009.000000T0000Z-100714T1045Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
CAMDEN NJ-GLOUCESTER NJ-PHILADELPHIA PA-BURLINGTON NJ-
637 AM EDT WED JUL 14 2010

...THE FLASH FLOOD WARNING WILL EXPIRE AT 645 AM EDT FOR NORTHWESTERN
BURLINGTON...PHILADELPHIA...EASTERN GLOUCESTER AND NORTHWESTERN
CAMDEN COUNTIES...

WITH THE HEAVY RAIN NOW NORTH OF THE WARNED AREA, THE FLOOD WARNING 
WILL BE ALLOWED TO EXPIRE.

LAT...LON 4010 7472 3963 7514 3982 7523 3992 7526
      3994 7525 3999 7528 4009 7504 4009 7497
      4004 7499 4003 7498 4006 7495 4007 7489
      4009 7485

$$

KRUZDLO

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 14, 1:29 AM EDTAreal Flood AdvisoryPHIBerks3 hr
Jul 14, 1:44 AM EDTSpecial Weather StatementPHIChester61 min
Jul 14, 2:32 AM EDTFlash Flood WarningPHIChester3 hr
Jul 14, 2:52 AM EDTFlash Flood WarningPHIDelaware3 hr
Jul 14, 3:27 AM EDTAreal Flood AdvisoryPHICarbon, Lehigh, Monroe, Northampton3 hr
Jul 14, 3:52 AM EDTSpecial Weather StatementPHICarbon53 min
Jul 14, 3:58 AM EDTAreal Flood AdvisoryPHIBucks, Montgomery3 hr
Jul 14, 3:59 AM EDTAreal Flood AdvisoryPHIBucks3 hr
Jul 14, 6:06 AM EDTAreal Flood AdvisoryPHICarbon, Monroe4 hr
Jul 14, 10:04 AM EDTAreal Flood AdvisoryPHIBerks3 hr
Jul 14, 10:15 AM EDTFlash Flood WatchPHIBerks, Delaware, Lehigh, Northampton, Philadelphia9 hr
Jul 14, 11:11 AM EDTFlash Flood WarningPHIBerks3 hr
Jul 14, 12:52 PM EDTAreal Flood AdvisoryPHIChester, Delaware3 hr
Jul 14, 1:35 PM EDTAreal Flood AdvisoryPHIBucks, Delaware, Montgomery, Philadelphia115 min
Jul 14, 2:11 PM EDTFlash Flood WarningPHIDelaware, Montgomery, Philadelphia109 min
Jul 14, 2:36 PM EDTAreal Flood AdvisoryPHIBucks3 hr
Jul 14, 3:12 PM EDTFlash Flood WarningPHIBucks63 min
Jul 14, 4:03 PM EDTAreal Flood WarningPHIChester, Delaware, Montgomery, Philadelphia79 min
Jul 13, 8:19 PM EDTSpecial Weather StatementPHIMercer71 min
Jul 13, 11:08 PM EDTSpecial Weather StatementPHICumberland, Salem62 min
Jul 13, 11:37 PM EDTSpecial Weather StatementPHICape May53 min
Jul 13, 11:43 PM EDTSpecial Weather StatementPHICamden62 min
Jul 14, 12:08 AM EDTSpecial Weather StatementPHIAtlantic, Cape May67 min
Jul 14, 2:40 AM EDTAreal Flood AdvisoryPHICumberland, Gloucester, Salem3 hr
Jul 14, 3:21 AM EDTSpecial Marine WarningPHI39 min
Jul 14, 3:37 AM EDTSmall Craft Advisory for Hazardous SeasPHI16 hr
Jul 14, 3:49 AM EDTSpecial Weather StatementPHIMorris56 min
Jul 14, 4:08 AM EDTSpecial Marine WarningPHI67 min
Jul 14, 4:10 AM EDTSpecial Weather StatementPHIAtlantic, Burlington, Camden, Cumberland, Gloucester, Salem65 min
Jul 14, 4:51 AM EDTSpecial Weather StatementPHIOcean54 min
Jul 14, 5:26 AM EDTSpecial Weather StatementPHIOcean64 min
Jul 14, 10:26 AM EDTAreal Flood AdvisoryPHIMorris, Somerset3 hr
Jul 14, 10:56 AM EDTAreal Flood AdvisoryPHIHunterdon, Morris, Somerset, Sussex, Warren4 hr
Jul 14, 12:47 PM EDTAreal Flood AdvisoryPHIAtlantic, Camden, Cape May, Cumberland, Gloucester, Salem3 hr
Jul 14, 7:58 PM EDTSpecial Weather StatementPHIMercer62 min

Nearby

Flash Flood Warnings in New Jersey, 2010Flash Flood Warnings in Pennsylvania, 2010Every flash flood warning in 2010

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.