Alert archive / New Jersey / Flash Flood Warnings in 2013

Flash Flood Warning 66, NWS Philadelphia/Mount Holly

September 2, 2013Gloucester County, Salem County, New Jersey

NWS Philadelphia/Mount Holly issued this flash flood warning at Sep 2, 2013, 12:28 PM EDT for Gloucester County, Salem 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: Sep 2, 2013, 12:28 PM EDT (16:28 UTC)
Expired: Sep 2, 2013, 3:30 PM EDT
In force: 3 hr
Issued by: NWS Philadelphia/Mount Holly
Area: Storm-based polygon
Flood severity: None

Counties Gloucester County, NJ, Salem County, NJ

The radar

The Philadelphia radar (KDIX), 72 km from the middle of the area, began a volume at 16:30 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

Wallops Is Stn, VA (KWAL), launched 12:00Z, 4.5 hours before the alert went out and 205 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: 191 J/kg
Mixed-layer CIN: -71 J/kg
Mixed-layer LCL: 759 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 64 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

750 
WGUS51 KPHI 021628
FFWPHI
NJC015-033-021930-
/O.NEW.KPHI.FF.W.0066.130902T1628Z-130902T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1228 PM EDT MON SEP 2 2013

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  GLOUCESTER COUNTY...
  NORTH CENTRAL SALEM COUNTY...

* UNTIL 330 PM EDT...

* AT 1225 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR            
  INDICATED VERY HEAVY RAIN FROM SHOWERS AND THUNDERSTORMS OVER      
  GLOUCESTER AND NORTH CENTRAL SALEM COUNTIES.

ADDITIONAL RAINFALL AMOUNTS OF 1 TO 2 INCHES IN A SHORT AMOUNT OF 
TIME IS ANTICIPATED IN THE WARNED AREA, AS SHOWERS AND 
THUNDERSTORMS HAVE BEEN REDEVELOPING OVER MUCH OF THE AREA. THIS 
WILL RESULT IN AREAS OF QUICK FLOODING OF ROADWAYS AND IN AREAS OF 
POOR DRAINAGE.

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 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!

DO NOT UNDERESTIMATE THE POWER OF FLOOD WATERS. ONLY A FEW INCHES OF
RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE.

&&

LAT...LON 3978 7544 3985 7534 3985 7525 3988 7517
      3983 7508 3982 7509 3978 7508 3978 7505
      3973 7502 3970 7498 3954 7529 3970 7547
      3973 7548

$$

FORECASTER: GORSE

1 follow-up statement

436 
WGUS71 KPHI 021922
FFSPHI

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
322 PM EDT MON SEP 2 2013

NJC015-033-021932-
/O.EXP.KPHI.FF.W.0066.000000T0000Z-130902T1930Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
GLOUCESTER NJ-SALEM NJ-
322 PM EDT MON SEP 2 2013

...THE FLASH FLOOD WARNING WILL EXPIRE AT 330 PM EDT FOR NORTH
CENTRAL SALEM AND GLOUCESTER COUNTIES...

THE WATERS FROM THE EARLIER HEAVY RAIN CONTINUES TO RECEDE AND NO 
LONGER POSE A THREAT TO LIFE OR PROPERTY. THEREFORE...THE FLASH FLOOD
WARNING WILL BE ALLOWED TO EXPIRE.

LAT...LON 3978 7544 3985 7534 3985 7525 3988 7517
      3983 7508 3982 7509 3978 7508 3978 7505
      3973 7502 3970 7498 3954 7529 3970 7547
      3973 7548

$$

FORECASTER: GORSE

The office that day

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

Issued	Product	Office	Counties	Lasted
Sep 1, 8:02 PM EDT	Special Weather Statement	PHI	Warren	58 min
Sep 2, 7:09 AM EDT	Areal Flood Advisory	PHI	Warren	4 hr
Sep 2, 7:16 AM EDT	Special Weather Statement	PHI	Hunterdon, Morris, Sussex	89 min
Sep 2, 7:35 AM EDT	Areal Flood Advisory	PHI	Hunterdon	6 hr
Sep 2, 7:58 AM EDT	Special Weather Statement	PHI	Hunterdon, Somerset	62 min
Sep 2, 8:17 AM EDT	Areal Flood Advisory	PHI	Morris, Somerset	3 hr
Sep 2, 8:58 AM EDT	Areal Flood Advisory	PHI	Atlantic, Cape May, Cumberland	3 hr
Sep 2, 9:37 AM EDT	Areal Flood Advisory	PHI	Camden	113 min
Sep 2, 9:52 AM EDT	Flash Flood Warning	PHI	Burlington, Camden, Gloucester	4 hr
Sep 2, 10:03 AM EDT	Areal Flood Advisory	PHI	Camden, Cumberland, Gloucester, Salem	4 hr
Sep 2, 10:16 AM EDT	Severe Thunderstorm Warning	PHI	Burlington, Camden	74 min
Sep 2, 10:35 AM EDT	Flash Flood Warning	PHI	Burlington, Camden	5 hr
Sep 2, 10:50 AM EDT	Areal Flood Advisory	PHI	Gloucester, Salem	3 hr
Sep 2, 11:31 AM EDT	Areal Flood Advisory	PHI	Burlington, Ocean	3 hr
Sep 2, 12:44 PM EDT	Flash Flood Warning	PHI	Hunterdon, Mercer	4 hr
Sep 2, 12:47 PM EDT	Special Weather Statement	PHI	Hunterdon	58 min
Sep 2, 2:03 PM EDT	Areal Flood Advisory	PHI	Middlesex, Somerset	3 hr
Sep 2, 2:42 PM EDT	Special Weather Statement	PHI	Atlantic	48 min
Sep 2, 3:35 PM EDT	Areal Flood Warning	PHI	Camden	9 hr
Sep 2, 3:44 PM EDT	Areal Flood Warning	PHI	Gloucester	14 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.