Alert archive / New Jersey / Flash Flood Warnings in 2013

Flash Flood Warning 58, NWS Philadelphia/Mount Holly

August 13, 20134 counties in New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Aug 13, 2013, 8:59 AM EDT for 4 counties in New Jersey. It was in force for 7 hr. 2 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, 8:59 AM EDT (12:59 UTC)
Expired: Aug 13, 2013, 4:00 PM EDT
In force: 7 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: None

Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ

The radar

The Philadelphia radar (KDIX), 34 km from the middle of the area, began a volume at 13:01 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, 9:47 AM EDT	FLASH FLOOD	Glassboro, NJ	US 322 EASTBUND FLOODED NEAR CR-533 MAIN STREET.
Aug 13, 9:50 AM EDT	FLASH FLOOD	Monroe Twp, NJ	ROUTE 42 FROM ROUTE 322 TO ROUTE 689 IN WASHINGTON TWP.

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, 1.0 hours before the alert went out and 121 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.

826 
WGUS51 KPHI 131259
FFWPHI
NJC001-005-007-015-131700-
/O.NEW.KPHI.FF.W.0058.130813T1259Z-130813T1700Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  SOUTHERN CAMDEN COUNTY...
  SOUTHEASTERN GLOUCESTER COUNTY...
  CENTRAL BURLINGTON COUNTY...
  WESTERN ATLANTIC COUNTY...

* UNTIL 100 PM EDT...

* AT 856 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED   
  VERY HEAVY RAIN FROM THUNDERSTORMS OVER CENTRAL BURLINGTON...      
  SOUTHEASTERN GLOUCESTER...SOUTHERN CAMDEN AND WESTERN ATLANTIC     
  COUNTIES.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO RURAL AREAS
  OF CENTRAL BURLINGTON...SOUTHEASTERN GLOUCESTER...SOUTHERN CAMDEN
  AND WESTERN ATLANTIC COUNTIES.

ADDITIONAL RAINFALL AMOUNTS OF 2 TO 3 INCHES ARE POSSIBLE IN THE 
WARNED AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT OR OCCURRING.
IF YOU ARE IN THE WARNING AREA MOVE TO HIGHER GROUND IMMEDIATELY. 
RESIDENTS LIVING ALONG STREAMS AND CREEKS SHOULD TAKE 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 3942 7484 3967 7520 3966 7524 4000 7478
      4007 7489 4013 7482 4012 7478 4015 7472
      4018 7471 4018 7469 4013 7458 3986 7444

$$

FORECASTER: JJM

1 follow-up statement

452 
WGUS51 KPHI 131651
FFWPHI
NJC001-005-007-015-132000-
/O.EXT.KPHI.FF.W.0058.000000T0000Z-130813T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1251 PM EDT TUE AUG 13 2013

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS EXTENDED THE

* FLASH FLOOD WARNING FOR...
  SOUTHERN CAMDEN COUNTY...
  SOUTHEASTERN GLOUCESTER COUNTY...
  CENTRAL BURLINGTON COUNTY...
  WESTERN ATLANTIC COUNTY...

* UNTIL 400 PM EDT...

* AT 1244 PM EDT...HEAVY RAIN HAS MOVED OUT OF THE AREA.             
  HOWEVER...MANY STREAMS CONTINUE TO RUN HIGH FROM RAIN EARLIER      
  TODAY. THE FLASH FLOOD WARNING HAS THEREFORE BEEN EXTENDED THROUGH 
  LATER THIS AFTERNOON TO GIVE TIME FOR STREAMS TO DRAIN.


PRECAUTIONARY/PREPAREDNESS ACTIONS...

FLOODING IS OCCURRING. 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. 
NEVER...NEVER SWIM OR BOAT IN FLOODED STREAMS.

&&

LAT...LON 3942 7484 3967 7520 3966 7524 4000 7478
      4007 7489 4013 7482 4012 7478 4015 7472
      4018 7471 4018 7469 4013 7458 3986 7444

$$

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, 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, 9:42 AM EDT	Flash Flood Warning	PHI	Atlantic, Burlington, Cape May, Cumberland, Hunterdon, Middlesex and 4 more	5 hr
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.