Alert archive / New Jersey / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 261, NWS Philadelphia/Mount Holly

September 9, 2008Atlantic County, Burlington County, Ocean County, New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 9, 2008, 12:11 PM EDT for Atlantic County, Burlington County, Ocean County, New Jersey. It was in force for 49 min. 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 9, 2008, 12:11 PM EDT (16:11 UTC)
Expired
Sep 9, 2008, 1:00 PM EDT
In force
49 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Atlantic County, NJ, Burlington County, NJ, Ocean County, NJ

The radar

The Philadelphia radar (KDIX), 38 km from the middle of the area, began a volume at 16:14 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Sep 9, 9:33 AM EDTSevere Thunderstorm WatchSPC6 hr

The nearest sounding before it

Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 4.2 hours before the alert went out and 134 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 2008-09-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1988 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km-30°-20°-10°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 2008-09-09The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 118 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
1988 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
557 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
118 m²/s²
0-3 km storm-relative helicity
109 m²/s²
Significant tornado parameter
1.0
Supercell composite
5.3

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 091611
SVRPHI
NJC001-005-029-091700-
/O.NEW.KPHI.SV.W.0261.080909T1611Z-080909T1700Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1211 PM EDT TUE SEP 9 2008

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN ATLANTIC COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHEASTERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
  SOUTH CENTRAL OCEAN COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 100 PM EDT

* AT 1209 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  HAMMONTON...OR ABOUT 17 MILES NORTHEAST OF VINELAND...AND MOVING
  EAST AT 32 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  BATSTO BY 1220 PM...
  EGG HARBOR CITY AND 6 MILES SOUTH OF WHARTON STATE FOREST BY 1225
  PM...
  WADING RIVER AND 8 MILES NORTH OF PORT REPUBLIC BY 1235 PM...
  NEW GRETNA AND 6 MILES SOUTH OF PENN STATE FOREST BY 1240 PM...
  BASS RIVER STATE FOREST BY 1245 PM...
  WARREN GROVE BY 1250 PM...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 PM TUESDAY
AFTERNOON FOR DELAWARE AND NORTHEASTERN MARYLAND AND NEW JERSEY AND
SOUTHEAST PENNSYLVANIA.

LAT...LON 3949 7442 3957 7491 3976 7471 3982 7432
TIME...MOT...LOC 1612Z 261DEG 28KT 3963 7473

$$

MPD

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 9, 3:36 AM EDTSmall Craft AdvisoryPHI36 hr
Sep 9, 9:09 AM EDTAreal Flood AdvisoryPHISussex, Warren3 hr
Sep 9, 9:21 AM EDTSevere Thunderstorm WarningPHIGloucester, Hunterdon, Mercer, Morris, Salem, Somerset and 2 more39 min
Sep 9, 9:41 AM EDTFlash Flood WarningPHIHunterdon, Morris, Somerset3 hr
Sep 9, 9:59 AM EDTFlash Flood WarningPHIBurlington, Camden, Gloucester, Salem3 hr
Sep 9, 10:04 AM EDTFlash Flood WarningPHIHunterdon, Mercer, Middlesex, Morris, Somerset3 hr
Sep 9, 10:57 AM EDTSevere Thunderstorm WarningPHIBurlington, Mercer, Middlesex, Monmouth, Ocean48 min
Sep 9, 11:07 AM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Gloucester, Salem38 min
Sep 9, 11:50 AM EDTSpecial Marine WarningPHI55 min
Sep 9, 12:44 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cape May, Cumberland46 min
Sep 9, 1:05 PM EDTSpecial Marine WarningPHI55 min
Sep 9, 1:07 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cape May, Cumberland53 min
Sep 9, 1:55 PM EDTSpecial Marine WarningPHI65 min
Sep 9, 1:58 PM EDTSevere Thunderstorm WarningPHICape May92 min
Sep 9, 2:42 PM EDTAreal Flood AdvisoryPHICape May3 hr
Sep 9, 2:53 PM EDTSpecial Marine WarningPHI86 min

Nearby

Severe Thunderstorm Warnings in New Jersey, 2008Every severe thunderstorm warning in 2008

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.