Alert archive / New Jersey / Flash Flood Warnings in 2013

Flash Flood Warning 59, NWS Philadelphia/Mount Holly

August 13, 201310 counties in New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 13, 2013, 9:42 AM EDT for 10 counties in New Jersey. It was in force for 5 hr. 6 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: Aug 13, 2013, 9:42 AM EDT (13:42 UTC)
Expired: Aug 13, 2013, 2:45 PM EDT
In force: 5 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: None

Counties Atlantic County, NJ, Burlington County, NJ, Cape May County, NJ, Cumberland County, NJ, Hunterdon County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ, Salem County, NJ, Somerset County, NJ

The radar

The Philadelphia radar (KDIX), 21 km from the middle of the area, began a volume at 13:43 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

Time	Report	Where	Remark
Aug 13, 10:15 AM EDT	FLASH FLOOD	Wall Twp, NJ	GARDFEN STATE PKWY SOUTH NEAR EXIT 98.
Aug 13, 10:20 AM EDT	FLASH FLOOD	Middletown Twp, NJ	SEVERAL REPORTS OF FLOODING ALONG THE GARDEN STATE PKWY
Aug 13, 10:30 AM EDT	FLASH FLOOD	Ocean Twp, NJ	FLOODING ON NJ 66 WESTBOUND EAST OF NJ 18.
Aug 13, 11:00 AM EDT	FLASH FLOOD	Allenhurst, NJ	CEDAR AVE UNDERPASS FLOODED
Aug 13, 11:15 AM EDT	FLASH FLOOD	Surf City, NJ	STREETS FLOODED
Aug 13, 11:20 AM EDT	FLASH FLOOD	Ocean Twp, NJ	MULTIPLE VEHICLES STUCK ON ROUTE 35 NEAR THE BLUE SWAN DINER.

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, 1.7 hours before the alert went out and 143 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1840 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 567 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 129 m²/s²
0-3 km storm-relative helicity: 135 m²/s²
Significant tornado parameter: 1.3
Supercell composite: 7.8

Open this sounding in Storm Lab

The text

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

024 
WGUS51 KPHI 131342
FFWPHI
NJC001-005-009-011-019-023-025-029-033-035-131845-
/O.NEW.KPHI.FF.W.0059.130813T1342Z-130813T1845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
942 AM EDT TUE AUG 13 2013

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  HUNTERDON COUNTY...
  SOMERSET COUNTY...
  MIDDLESEX COUNTY...
  BURLINGTON COUNTY...
  CAPE MAY COUNTY...
  MONMOUTH COUNTY...
  ATLANTIC COUNTY...
  OCEAN COUNTY...
  SOUTHEASTERN SALEM COUNTY...
  CUMBERLAND COUNTY...

* UNTIL 245 PM EDT...

* AT 935 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  VERY HEAVY RAIN FROM THUNDERSTORMS OVER SOUTHERN AND CENTRAL NEW   
  JERSEY. THESE SHOWERS AND THUNDERSTORMS WERE MOVING NORTHEAST AT   
  AROUND 20 MPH. 3 TO 4 INCHES OF RAINFALL IS POSSIBLE FROM SOME OF  
  THESE STORMS...WHICH WILL RESULT IN RAPID LOCALIZED FLOODING. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO ATLANTIC
  CITY...MILLVILLE...NEW BRUNSWICK...SOMERVILLE...TOMS RIVER...
  VENTNOR CITY...ASBURY PARK...BRIDGETON...LONG BRANCH...OCEAN
  CITY...PERTH AMBOY...SOUTH AMBOY AND VINELAND.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING. 
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE IMMEDIATE 
PRECAUTIONS TO PROTECT LIFE AND PROPERTY. NEVER ATTEMPT TO CROSS 
SWIFTLY FLOWING WATERS OR WATERS OF UNKNOWN DEPTH BY FOOT OR IN AN 
AUTOMOBILE. TURN AROUND DON'T DROWN!

MOST FLOOD RELATED DEATHS OCCUR IN AUTOMOBILES. DO NOT ATTEMPT TO 
CROSS WATER COVERED BRIDGES...DIPS...OR LOW WATER CROSSINGS. TURN 
AROUND...DON'T DROWN! NEVER TRY TO CROSS A FLOWING STREAM...EVEN A 
SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE UP TO HIGHER GROUND.

&&

LAT...LON 3967 7414 3892 7494 3917 7490 3939 7543
      3966 7519 3952 7498 3970 7477 3989 7493
      4024 7448 4034 7494 4058 7520 4078 7490
      4078 7488 4061 7421 4047 7426 4043 7400
      4048 7402 4048 7401 4032 7396

$$

FORECASTER:JJM

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 13, 2:45 AM EDT	Flash Flood Watch	PHI	Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 6 more	9 hr
Aug 13, 6:23 AM EDT	Severe Thunderstorm Warning	PHI	Salem	67 min
Aug 13, 7:05 AM EDT	Severe Thunderstorm Warning	PHI	Camden, Gloucester, Salem	40 min
Aug 13, 7:11 AM EDT	Special Marine Warning	PHI		19 min
Aug 13, 7:16 AM EDT	Special Weather Statement	PHI	Camden, Gloucester, Salem	59 min
Aug 13, 7:22 AM EDT	Areal Flood Advisory	PHI	Camden, Gloucester, Salem	7 hr
Aug 13, 7:33 AM EDT	Areal Flood Advisory	PHI	Hunterdon, Mercer, Warren	7 hr
Aug 13, 7:51 AM EDT	Special Marine Warning	PHI		24 min
Aug 13, 7:54 AM EDT	Flash Flood Warning	PHI	Burlington, Camden, Gloucester, Salem	8 hr
Aug 13, 7:54 AM EDT	Special Weather Statement	PHI	Camden	66 min
Aug 13, 7:57 AM EDT	Severe Thunderstorm Warning	PHI	Gloucester, Salem	48 min
Aug 13, 8:20 AM EDT	Flash Flood Warning	PHI	Hunterdon, Mercer	8 hr
Aug 13, 8:36 AM EDT	Special Weather Statement	PHI	Mercer	39 min
Aug 13, 8:44 AM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Camden, Gloucester, Salem	61 min
Aug 13, 8:59 AM EDT	Flash Flood Warning	PHI	Atlantic, Burlington, Camden, Gloucester	7 hr
Aug 13, 9:07 AM EDT	Special Weather Statement	PHI	Cumberland, Salem	38 min
Aug 13, 9:11 AM EDT	Special Weather Statement	PHI	Burlington	49 min
Aug 13, 9:22 AM EDT	Severe Thunderstorm Warning	PHI	Burlington, Ocean	38 min
Aug 13, 9:26 AM EDT	Special Weather Statement	PHI	Atlantic	34 min
Aug 13, 9:34 AM EDT	Special Marine Warning	PHI		56 min
Aug 13, 9:43 AM EDT	Severe Thunderstorm Warning	PHI	Atlantic, Burlington, Ocean	47 min
Aug 13, 9:49 AM EDT	Special Weather Statement	PHI	Atlantic, Cumberland	56 min
Aug 13, 10:01 AM EDT	Special Weather Statement	PHI	Monmouth	29 min
Aug 13, 10:04 AM EDT	Special Weather Statement	PHI	Ocean	41 min
Aug 13, 10:12 AM EDT	Tornado Warning	PHI	Ocean	33 min
Aug 13, 10:32 AM EDT	Severe Thunderstorm Warning	PHI	Ocean	28 min
Aug 13, 10:39 AM EDT	Special Marine Warning	PHI		66 min
Aug 13, 10:51 AM EDT	Special Weather Statement	PHI	Atlantic	54 min
Aug 13, 11:51 AM EDT	Special Marine Warning	PHI		84 min
Aug 13, 1:10 PM EDT	Special Marine Warning	PHI		65 min
Aug 13, 2:18 PM EDT	Areal Flood Warning	PHI	Burlington, Camden, Gloucester, Salem	9 hr
Aug 13, 3:30 PM EDT	Small Craft Advisory	PHI		24 hr

Nearby

Flash Flood Warnings in New Jersey, 2013 Every flash flood warning in 2013

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.