Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 240, NWS Philadelphia/Mount Holly

August 14, 2011Cumberland County, Salem County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 14, 2011, 12:28 PM EDT for Cumberland County, Salem County, New Jersey. It was in force for 62 min. 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 14, 2011, 12:28 PM EDT (16:28 UTC)
Expired
Aug 14, 2011, 1:30 PM EDT
In force
62 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Cumberland County, NJ, Salem County, NJ

The radar

The Dover AFB radar (KDOX), 60 km from the middle of the area, began a volume at 16:28 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
Aug 14, 1:10 PM EDTTSTM WND DMGUpper Deerfield Twp, NJTREES AND WIRES DOWN IN UPPER DEERFIELD TWP
Aug 14, 1:25 PM EDTTSTM WND DMGBridgeton, NJTREES AND WIRES DOWN IN BRIDGETON

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 12:00Z, 4.5 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, Wallops Is Stn, VA at 12:00Z on 2011-08-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 341 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, Wallops Is Stn, VA at 12:00Z on 2011-08-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 52 square meters per square second.19395878Sfc1 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
341 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
931 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
52 m²/s²
0-3 km storm-relative helicity
81 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.5

Open this sounding in Storm Lab

The text

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

145 
WUUS51 KPHI 141628
SVRPHI
NJC011-033-141730-
/O.NEW.KPHI.SV.W.0240.110814T1628Z-110814T1730Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1228 PM EDT SUN AUG 14 2011

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

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

* UNTIL 130 PM EDT

* AT 1226 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH. THIS STORM WAS LOCATED OVER THE BAY ABOUT 9 MILES SOUTH
  OF GREENWICH...AND MOVING NORTHEAST AT 20 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CEDARVILLE AND NEWPORT AROUND 1255 PM EDT...
  FAIRTON AROUND 100 PM EDT...
  BRIDGETON AROUND 105 PM EDT...
  MILLVILLE AROUND 120 PM EDT...
  ROSENHAYN AROUND 125 PM EDT...
  SOUTH VINELAND AROUND 130 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE 
IMMEDIATELY FOR DAMAGING WINDS...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 3923 7520 3929 7527 3928 7530 3929 7532
      3934 7534 3933 7537 3936 7540 3939 7538
      3960 7512 3942 7487
TIME...MOT...LOC 1627Z 228DEG 16KT 3927 7535

$$

IOVINO
1 follow-up statement
514 
WWUS51 KPHI 141643
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1243 PM EDT SUN AUG 14 2011

NJC011-033-141730-
/O.CON.KPHI.SV.W.0240.000000T0000Z-110814T1730Z/
SALEM NJ-CUMBERLAND NJ-
1243 PM EDT SUN AUG 14 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 130 PM EDT
FOR CUMBERLAND AND SOUTHEASTERN SALEM COUNTIES...

AT 1241 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR CEDARVILLE...MOVING 
NORTHEAST AT 20 MPH.

THE SEVERE THUNDERSTORM WILL BE NEAR...
  CEDARVILLE AND NEWPORT BY 1255 PM EDT...
  FAIRTON BY 100 PM EDT...
  BRIDGETON BY 105 PM EDT...
  MILLVILLE BY 120 PM EDT...
  ROSENHAYN BY 125 PM EDT...
  SOUTH VINELAND AND VINELAND BY 130 PM EDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM.
WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.

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 3923 7520 3929 7527 3928 7530 3929 7532
      3934 7534 3933 7537 3936 7540 3939 7538
      3960 7512 3942 7487
TIME...MOT...LOC 1643Z 228DEG 16KT 3932 7528

$$

IOVINO

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 13, 9:39 PM EDTAreal Flood AdvisoryPHISussex, Warren4 hr
Aug 13, 10:21 PM EDTFlash Flood WarningPHIWarren4 hr
Aug 13, 11:16 PM EDTFlash Flood WarningPHISussex4 hr
Aug 13, 11:33 PM EDTAreal Flood AdvisoryPHIHunterdon, Morris4 hr
Aug 14, 12:03 AM EDTFlash Flood WarningPHIHunterdon, Morris, Somerset4 hr
Aug 14, 12:53 AM EDTAreal Flood AdvisoryPHIMiddlesex, Somerset3 hr
Aug 14, 2:15 AM EDTFlash Flood WarningPHIWarren4 hr
Aug 14, 3:25 AM EDTSmall Craft AdvisoryPHI30 hr
Aug 14, 3:37 AM EDTAreal Flood AdvisoryPHIBurlington, Camden, Gloucester, Salem113 min
Aug 14, 3:42 AM EDTFlash Flood WatchPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more25 hr
Aug 14, 3:55 AM EDTFlash Flood WarningPHIBurlington, Camden, Cumberland, Gloucester, Hunterdon, Mercer and 4 more4 hr
Aug 14, 4:45 AM EDTSpecial Weather StatementPHICamden, Mercer60 min
Aug 14, 5:37 AM EDTAreal Flood AdvisoryPHIBurlington, Mercer, Middlesex, Monmouth, Ocean4 hr
Aug 14, 6:24 AM EDTAreal Flood AdvisoryPHIHunterdon, Morris, Sussex, Warren3 hr
Aug 14, 7:43 AM EDTFlash Flood WarningPHIBurlington, Camden, Cumberland, Gloucester, Hunterdon, Mercer and 4 more4 hr
Aug 14, 8:57 AM EDTFlash Flood WarningPHIAtlantic, Burlington, Monmouth, Ocean4 hr
Aug 14, 11:40 AM EDTAreal Flood WarningPHICamden, Cumberland, Gloucester, Salem18 hr
Aug 14, 11:50 AM EDTSpecial Marine WarningPHI40 min
Aug 14, 12:00 PM EDTAreal Flood WarningPHIMorris28 hr
Aug 14, 12:25 PM EDTSpecial Marine WarningPHI35 min
Aug 14, 12:37 PM EDTAreal Flood WarningPHIHunterdon, Warren7 hr
Aug 14, 1:24 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cumberland, Gloucester, Salem66 min
Aug 14, 1:36 PM EDTAreal Flood WarningPHIMercer, Middlesex, Morris, Somerset16 hr
Aug 14, 2:21 PM EDTAreal Flood WarningPHIBurlington6 hr
Aug 14, 2:23 PM EDTSevere Thunderstorm WarningPHIAtlantic, Burlington, Camden, Gloucester52 min
Aug 14, 4:03 PM EDTSpecial Weather StatementPHIOcean57 min
Aug 14, 4:04 PM EDTRiver Flood WarningPHIMercer9 hr

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; radar from the NEXRAD Level II archive.