Alert archive / New Jersey / Flash Flood Warnings in 2015

Flash Flood Warning 38, NWS Philadelphia/Mount Holly

July 15, 2015Atlantic County, Burlington County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Jul 15, 2015, 8:43 AM EDT for Atlantic County, Burlington County, Ocean County, New Jersey. It was in force for 4 hr. 5 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
Jul 15, 2015, 8:43 AM EDT (12:43 UTC)
Expired
Jul 15, 2015, 12:45 PM EDT
In force
4 hr
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon
Flood severity
None

Counties Atlantic County, NJ, Burlington County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 36 km from the middle of the area, began a volume at 12:47 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
Jul 15, 9:05 AM EDTFLASH FLOODAbsecon, NJWHITE HORSE PIKE AT ROUTE 9 FLOODED WITH SOME CARS STRANDED IN FLOOD WATERS.
Jul 15, 9:05 AM EDTFLASH FLOODAbsecon, NJWHITE HORSE PIKE AT ROUTE 9 FLOODED WITH SOME CARS STRANDED IN FLOOD WATERS. ALSO... ROUTE 30 CLOSED BETWEEN ROUTE 9 AND CR 646.
Jul 15, 9:10 AM EDTFLASH FLOODAbsecon, NJSEVERAL ROADS CLOSED IN ABSECON DUE TO HIGH WATER... WITH SOME VEHICLES STALLED OUT... ESPECIALLY ALONG ROUTE 30.
Jul 15, 10:00 AM EDTHEAVY RAIN 3.85E Galloway Twp, NJ3.85 INCHES OF RAIN RECORDED IN EASTERN GALLOWAY TOWNSHIP IN JUST UNDER 2 HOURS.
Jul 15, 12:00 PM EDTHEAVY RAIN 2.27Tuckerton, NJ

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, 0.7 hours before the alert went out and 158 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 2015-07-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 192 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 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 2015-07-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -14 square meters per square second.1939Sfc1 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
192 J/kg
Mixed-layer CIN
-61 J/kg
Mixed-layer LCL
677 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-14 m²/s²
0-3 km storm-relative helicity
40 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.

853 
WGUS51 KPHI 151243
FFWPHI
NJC001-005-029-151645-
/O.NEW.KPHI.FF.W.0038.150715T1243Z-150715T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
843 AM EDT WED JUL 15 2015

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ  HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHEASTERN ATLANTIC COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHEASTERN OCEAN COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHEASTERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 1245 PM EDT

* AT 839 AM EDT...DOPPLER RADAR INDICATED HEAVY RAIN ACROSS PORTIONS 
  OF THE WARNED AREA. UP TO ONE INCH OF RAIN HAS ALREADY FALLEN. 
  FLASH FLOODING IS EXPECTED TO BEGIN SHORTLY.

* SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...
  ATLANTIC CITY...BARNEGAT...PLEASANTVILLE...VENTNOR CITY...
  BRIGANTINE...ABSECON...MARGATE CITY...EGG HARBOR CITY...
  TUCKERTON...PORT REPUBLIC...WADING RIVER...BROOKVILLE...BEACH HAVEN
  WEST...BASS RIVER STATE FOREST...CHATSWORTH...NEW GRETNA...WARREN
  GROVE...PENN STATE FOREST...POMONA AND MYSTIC ISLAND.

ADDITIONAL RAINFALL AMOUNTS OF ONE TO THREE INCHES ARE POSSIBLE IN 
THE WARNED AREA.

HIGH TIDES THIS MORNING COULD ALSO AFFECT DRAINAGE ALONG MAINLAND 
AND BARRIER ISLAND COMMUNITIES ON THE BACK BAYS. THIS COULD INCREASE 
FLOOD LEVELS OR KEEP FLOOD WATERS IN PLACE FOR A LONGER PERIOD OF 
TIME. 
 
PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOVE TO HIGHER GROUND NOW. 

DO NOT ENTER OR CROSS FLOWING WATER OR WATER OF UNKNOWN DEPTH. 

DRIVING INTO FLOOD WATERS COULD PUT YOUR LIFE AT RISK AND COST YOU
THOUSANDS OF DOLLARS IN VEHICLE REPAIRS. FLOOD WATERS MAY BE DEEPER
THAT YOU THINK.  TURN AROUND AND FIND AN ALTERNATE ROUTE.

&&

LAT...LON 3981 7417 3979 7412 3977 7410 3980 7417
      3974 7420 3976 7410 3975 7410 3958 7434
      3961 7420 3950 7434 3954 7439 3956 7441
      3941 7440 3944 7435 3949 7431 3947 7430
      3933 7450 3988 7462 3981 7409

$$

KRUZDLO
2 follow-up statements
386 
WGUS71 KPHI 151419
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1019 AM EDT WED JUL 15 2015

NJC001-005-029-151645-
/O.CON.KPHI.FF.W.0038.000000T0000Z-150715T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ATLANTIC NJ-OCEAN NJ-BURLINGTON NJ-
1019 AM EDT WED JUL 15 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 PM EDT FOR
SOUTHEASTERN ATLANTIC...SOUTH CENTRAL OCEAN AND SOUTHEASTERN
BURLINGTON COUNTIES...

AT 1015 AM EDT...DOPPLER RADAR INDICATED THE HEAVIEST RAINS HAVE 
MOVED OFFSHORE. BUT MORE THAN THREE INCHES OF RAIN HAVE FALLEN OVER 
THE LAST ONE AND A HALF HOURS ACROSS PORTIONS OF THE WARNING. 

FLOODING HAS BEEN REPORTED IN BEACH HAVEN, BRIGANTINE, ATLANTIC 
CITY, AND ABSECON. 
 
HIGH TIDES THIS MORNING COULD ALSO AFFECT DRAINAGE ALONG MAINLAND 
AND BARRIER ISLAND COMMUNITIES ON THE BACK BAYS. THIS COULD INCREASE 
FLOOD LEVELS OR KEEP FLOOD WATERS IN PLACE FOR A LONGER PERIOD OF 
TIME. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT ENTER OR CROSS FLOWING WATER OR WATER OF UNKNOWN DEPTH. 

DRIVING INTO FLOOD WATERS COULD PUT YOUR LIFE AT RISK AND COST YOU
THOUSANDS OF DOLLARS IN VEHICLE REPAIRS. FLOOD WATERS MAY BE DEEPER
THAT YOU THINK.  TURN AROUND AND FIND AN ALTERNATE ROUTE.

&&

LAT...LON 3958 7434 3961 7420 3950 7434 3954 7439
      3956 7441 3941 7440 3945 7435 3949 7431
      3947 7430 3933 7450 3949 7453 3973 7431
      3973 7413

$$

KRUZDLO
054 
WGUS71 KPHI 151639
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1239 PM EDT WED JUL 15 2015

NJC001-005-029-151645-
/O.CON.KPHI.FF.W.0038.000000T0000Z-150715T1645Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
ATLANTIC NJ-OCEAN NJ-BURLINGTON NJ-
1239 PM EDT WED JUL 15 2015

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 PM EDT FOR
SOUTHEASTERN ATLANTIC...SOUTH CENTRAL OCEAN AND SOUTHEASTERN
BURLINGTON COUNTIES...

AT 1232 PM EDT...ONLY SHOWERS REMAIN. THE THUNDERSTORMS THAT DROPPED 
ALMOST FOUR INCHES OF RAIN IN ABOUT TWO HOURS HAVE MOVED OFF THE 
COAST. SIGNIFICANT FLOODING OCCURRED ACROSS THE SOUTHERN PORTION OF 
LBI, AND FROM BRIGANTINE SOUTH TO MARGATE. 

WHILE RAPIDLY RISING WATER ASSOCIATED WITH FLASH FLOODING IS NO 
LONGER A THREAT, THIS FLASH FLOOD WARNING WILL BE CONVERTED TO A 
FLOOD WARNING IN THE NEXT FEW MINUTES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT ENTER OR CROSS FLOWING WATER OR WATER OF UNKNOWN DEPTH. 

&&

LAT...LON 3958 7434 3961 7420 3950 7434 3954 7439
      3956 7441 3941 7440 3945 7435 3949 7431
      3947 7430 3933 7450 3949 7453 3959 7444

$$

KRUZDLO

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 15, 5:04 AM EDTSpecial Weather StatementPHIGloucester41 min
Jul 15, 5:36 AM EDTFlash Flood WarningPHIBurlington, Camden, Gloucester, Salem4 hr
Jul 15, 5:59 AM EDTSpecial Weather StatementPHIBurlington, Camden46 min
Jul 15, 6:04 AM EDTSpecial Weather StatementPHISalem56 min
Jul 15, 6:51 AM EDTAreal Flood AdvisoryPHIMorris, Sussex, Warren4 hr
Jul 15, 7:00 AM EDTSpecial Weather StatementPHIAtlantic30 min
Jul 15, 7:10 AM EDTAreal Flood AdvisoryPHICumberland, Gloucester, Salem2 hr
Jul 15, 7:22 AM EDTFlash Flood WarningPHIMorris, Sussex, Warren4 hr
Jul 15, 7:30 AM EDTAreal Flood AdvisoryPHIAtlantic, Burlington, Camden, Cumberland, Gloucester, Salem4 hr
Jul 15, 8:16 AM EDTSpecial Weather StatementPHIAtlantic44 min
Jul 15, 8:29 AM EDTSpecial Weather StatementPHIAtlantic31 min
Jul 15, 8:39 AM EDTSpecial Marine WarningPHI51 min
Jul 15, 8:44 AM EDTSevere Thunderstorm WarningPHIAtlantic, Ocean46 min
Jul 15, 8:50 AM EDTSpecial Marine WarningPHI40 min
Jul 15, 9:12 AM EDTAreal Flood AdvisoryPHIBurlington, Camden, Gloucester, Hunterdon, Mercer, Monmouth and 1 more4 hr
Jul 15, 9:28 AM EDTSpecial Marine WarningPHI62 min
Jul 15, 9:34 AM EDTSpecial Marine WarningPHI26 min
Jul 15, 9:55 AM EDTSpecial Marine WarningPHI65 min
Jul 15, 10:01 AM EDTSpecial Marine WarningPHI59 min
Jul 15, 10:05 AM EDTSpecial Weather StatementPHICumberland25 min
Jul 15, 10:51 AM EDTSpecial Marine WarningPHI54 min
Jul 15, 12:46 PM EDTAreal Flood WarningPHIAtlantic, Burlington, Ocean4 hr
Jul 15, 6:06 PM EDTAreal Flood AdvisoryPHISomerset4 hr

Nearby

Flash Flood Warnings in New Jersey, 2015Every flash flood warning in 2015

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.