Alert archive / New Jersey / Flash Flood Warnings in 2014

Flash Flood Warning 6, NWS Philadelphia/Mount Holly

June 10, 2014Camden County, Gloucester County, New Jersey; Delaware County, Philadelphia County, Pennsylvania

NWS Philadelphia/Mount Holly issued this flash flood warning at Jun 10, 2014, 5:18 PM EDT for Camden County, Gloucester County, New Jersey; Delaware County, Philadelphia County, Pennsylvania. It was in force for 3 hr. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
Jun 10, 2014, 5:18 PM EDT (21:18 UTC)
Expired
Jun 10, 2014, 8:15 PM EDT
In force
3 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

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

The radar

The Philadelphia radar (KDIX), 48 km from the middle of the area, began a volume at 21:20 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.

What was reported inside it

TimeReportWhereRemark
Jun 10, 5:40 PM EDTFLASH FLOODPhiladelphia, PACITIZENS BANK PARK INFIELD FLOODED.
Jun 10, 5:40 PM EDTFLASH FLOODPhiladelphia, PAWATER WAIST HIGH ON I-95 NORTH AND SOUTHBOUND AT BROAD STREET TUNNEL. NUMEROUS VEHICLES STRANDED.
Jun 10, 6:14 PM EDTFLASH FLOODPennsauken, NJFLOODING ALONG US 130 WITH LANES CLOSED.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 9.3 hours before the alert went out and 107 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, Phillips Aaf/Abe, MD at 12:00Z on 2014-06-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 566 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Phillips Aaf/Abe, MD at 12:00Z on 2014-06-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 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
566 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
712 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
63 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.

515 
WGUS51 KPHI 102118
FFWPHI
NJC007-015-PAC045-101-110015-
/O.NEW.KPHI.FF.W.0006.140610T2118Z-140611T0015Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
518 PM EDT TUE JUN 10 2014

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

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

* UNTIL 815 PM EDT

* AT 515 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  SLOWING MOVING SHOWERS AND THUNDERSTORMS PRODUCING TORRENTIAL      
  RAINFALL ACROSS THE AREA. RAINFALL RATES OF NEARLY 2 INCHES WITHIN 
  AN HOUR IS EXPECTED, WHICH WILL RESULT IN AREAS OF FLOODING.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO YEADON...
  FOLCROFT...EAST LANSDOWNE...CHERRY HILL...BELLMAWR...SOUTH
  PHILADELPHIA...PHILADELPHIA INTERNATIONAL AIRPORT...WESTVILLE...
  VOORHEES...SPRINGDALE...NATIONAL PARK...MAGNOLIA...GREENTREE...BEN
  FRANKLIN BRIDGE AND PHILADELPHIA INTERNATIONAL ARPT

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.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. FLOOD WATERS ARE USUALLY
DEEPER THAN THEY APPEAR. JUST ONE FOOT OF FLOWING WATER IS POWERFUL
ENOUGH TO SWEEP VEHICLES OFF THE ROAD. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

&&

LAT...LON 3970 7477 3984 7536 3997 7525 3999 7502
      3998 7501 3997 7502 3995 7502 3994 7498
      3993 7498 3989 7493 3980 7491 3978 7489
      3979 7481 3973 7473

$$

GORSE

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 10, 4:05 PM EDTFlash Flood WarningPHICamden, Gloucester, Salem3 hr
Jun 10, 6:23 PM EDTFlash Flood WarningPHIBurlington3 hr
Jun 10, 7:23 PM EDTAreal Flood WarningPHIGloucester6 hr
Jun 9, 8:06 PM EDTAreal Flood WarningPHIMontgomery, Philadelphia4 hr
Jun 9, 11:57 PM EDTAreal Flood WarningPHIMontgomery, Philadelphia3 hr
Jun 10, 2:39 PM EDTAreal Flood AdvisoryPHIChester3 hr
Jun 10, 7:14 PM EDTAreal Flood AdvisoryPHIMontgomery3 hr

Nearby

Flash Flood Warnings in New Jersey, 2014Flash Flood Warnings in Pennsylvania, 2014Every flash flood warning in 2014

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.