Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 231, NWS Philadelphia/Mount Holly

August 1, 20114 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 1, 2011, 6:47 PM EDT for 4 counties in New Jersey. It was in force for 73 min. 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
Aug 1, 2011, 6:47 PM EDT (22:47 UTC)
Expired
Aug 1, 2011, 8:00 PM EDT
In force
73 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Atlantic County, NJ, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ

What was reported inside it

TimeReportWhereRemark
Aug 1, 6:50 PM EDTTSTM WND DMGBridgeton, NJTREES AND WIRES DOWN.
Aug 1, 6:50 PM EDTTSTM WND DMGVineland, NJTREES AND WIRES DOWN.
Aug 1, 6:55 PM EDTTSTM WND GST 50Malaga, NJ50 MPH WIND MEASURED IN MALAGA.
Aug 1, 6:58 PM EDTTSTM WND GST 60Glassboro, NJ55-60 MPH WIND REPORTED IN GLASSBORO.
Aug 1, 7:15 PM EDTMARINE TSTM WIND 46Bivalve, NJ46 MPH GUST REPORTED AT BIVALVE.

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, 10.8 hours before the alert went out and 81 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 2011-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 307 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°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 2011-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -192 square meters per square second.1939587897Sfc1 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
307 J/kg
Mixed-layer CIN
-150 J/kg
Mixed-layer LCL
1512 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
-192 m²/s²
0-3 km storm-relative helicity
-166 m²/s²
Significant tornado parameter
0.0
Supercell composite
-1.5

Open this sounding in Storm Lab

The text

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

238 
WUUS51 KPHI 012247
SVRPHI
NJC001-011-015-033-020000-
/O.NEW.KPHI.SV.W.0231.110801T2247Z-110802T0000Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
647 PM EDT MON AUG 1 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHWESTERN ATLANTIC COUNTY IN SOUTHERN NEW JERSEY...
  CUMBERLAND COUNTY IN SOUTHERN NEW JERSEY...
  THIS INCLUDES THE CITIES OF...VINELAND...MILLVILLE...
  SOUTH CENTRAL GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHEASTERN SALEM COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 800 PM EDT

* AT 642 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL...AND
  DESTRUCTIVE WINDS IN EXCESS OF 70 MPH.  THIS STORM WAS LOCATED NEAR
  MALAGA...OR 9 MILES NORTHWEST OF VINELAND...AND MOVING SOUTHEAST AT
  15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  NEWFIELD AROUND 655 PM EDT...
  BUENA AROUND 710 PM EDT...
  VINELAND AND SOUTH VINELAND AROUND 715 PM EDT...
  CUMBERLAND AROUND 740 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...HEAVY RAIN WILL OCCUR
WITH THESE STORMS AND CAUSE LOW-LYING AND POOR DRAINAGE FLOODING.

THE DAMAGING WINDS MAY ARRIVE BEFORE THE HEAVY RAIN.

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

&&

LAT...LON 3932 7479 3930 7484 3932 7486 3928 7490
      3917 7515 3920 7519 3923 7518 3929 7527
      3928 7530 3929 7532 3934 7534 3933 7537
      3938 7544 3950 7557 3953 7554 3973 7507
TIME...MOT...LOC 2246Z 325DEG 14KT 3957 7507

$$

TFG
2 follow-up statements
044 
WWUS51 KPHI 012324
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
724 PM EDT MON AUG 1 2011

NJC015-033-012333-
/O.CAN.KPHI.SV.W.0231.000000T0000Z-110802T0000Z/
SALEM NJ-GLOUCESTER NJ-
724 PM EDT MON AUG 1 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL GLOUCESTER AND
SOUTHEASTERN SALEM COUNTIES IS CANCELLED...

THE THUNDERSTORM IS NOW IN CUMBERLAND COUNTY.

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

LAT...LON 3932 7486 3928 7490 3917 7515 3920 7519
      3923 7518 3929 7527 3929 7532 3934 7534
      3934 7535 3946 7533 3952 7519 3946 7509
      3956 7506 3951 7499 3953 7496 3932 7479
TIME...MOT...LOC 2323Z 325DEG 14KT 3945 7496

$$

NJC001-011-020000-
/O.CON.KPHI.SV.W.0231.000000T0000Z-110802T0000Z/
CUMBERLAND NJ-ATLANTIC NJ-
724 PM EDT MON AUG 1 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR SOUTHWESTERN ATLANTIC AND CUMBERLAND COUNTIES...

AT 720 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS
LOCATED NEAR VINELAND...MOVING SOUTHEAST AT 15 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  CUMBERLAND AND 8 MILES NORTHEAST OF LAUREL LAKE BY 740 PM EDT...
  6 MILES NORTHEAST OF PORT ELIZABETH BY 750 PM EDT...
  7 MILES NORTHEAST OF BRICKSBORO AND 8 MILES NORTHEAST OF
  MAURICETOWN BY 755 PM EDT...
  9 MILES NORTHEAST OF LEESBURG BY 800 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

&&

LAT...LON 3932 7486 3928 7490 3917 7515 3920 7519
      3923 7518 3929 7527 3929 7532 3934 7534
      3934 7535 3946 7533 3952 7519 3946 7509
      3956 7506 3951 7499 3953 7496 3932 7479
TIME...MOT...LOC 2323Z 325DEG 14KT 3945 7496

$$
 
TFG
997 
WWUS51 KPHI 012350
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
750 PM EDT MON AUG 1 2011

NJC001-011-020000-
/O.EXP.KPHI.SV.W.0231.000000T0000Z-110802T0000Z/
CUMBERLAND NJ-ATLANTIC NJ-
750 PM EDT MON AUG 1 2011

...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL ATLANTIC AND
CUMBERLAND COUNTIES WILL EXPIRE AT 800 PM EDT...

THE SEVERE THUNDERSTORM IS MOVING EAST OF THE AREA.

PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.

LAT...LON 3932 7486 3928 7490 3917 7515 3920 7519
      3923 7518 3929 7527 3929 7532 3934 7534
      3934 7535 3946 7533 3952 7519 3946 7509
      3956 7506 3951 7499 3953 7496 3932 7479
TIME...MOT...LOC 2350Z 325DEG 14KT 3936 7488

$$

TFG

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 31, 10:13 PM EDTSpecial Weather StatementPHIHunterdon, Middlesex, Somerset62 min
Jul 31, 10:58 PM EDTSpecial Weather StatementPHIMorris62 min
Aug 1, 1:49 AM EDTSpecial Marine WarningPHI56 min
Aug 1, 1:50 AM EDTSpecial Weather StatementPHIMonmouth55 min
Aug 1, 1:35 PM EDTSpecial Weather StatementPHIMorris, Sussex, Warren3 hr
Aug 1, 2:11 PM EDTSpecial Weather StatementPHIAtlantic, Burlington, Camden, Gloucester, Ocean94 min
Aug 1, 2:44 PM EDTSevere Thunderstorm WarningPHICumberland, Gloucester, Salem29 min
Aug 1, 4:09 PM EDTSpecial Weather StatementPHICamden66 min
Aug 1, 5:06 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Gloucester69 min
Aug 1, 5:50 PM EDTSevere Thunderstorm WarningPHICamden, Gloucester, Salem70 min
Aug 1, 6:03 PM EDTSpecial Marine WarningPHI57 min
Aug 1, 6:16 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Gloucester59 min
Aug 1, 6:17 PM EDTAreal Flood AdvisoryPHICamden, Gloucester3 hr
Aug 1, 6:20 PM EDTSevere Thunderstorm WarningPHIGloucester, Salem46 min
Aug 1, 7:01 PM EDTAreal Flood AdvisoryPHIAtlantic, Cumberland, Gloucester, Salem119 min
Aug 1, 7:07 PM EDTSpecial Marine WarningPHI83 min
Aug 1, 7:12 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cape May, Cumberland59 min
Aug 1, 7:17 PM EDTSpecial Marine WarningPHI118 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2011Every severe thunderstorm warning in 2011

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.