Alert archive / New Jersey / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 119, NWS Philadelphia/Mount Holly

June 30, 20087 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 30, 2008, 12:38 AM EDT for 7 counties in New Jersey. It was in force for 67 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
Jun 30, 2008, 12:38 AM EDT (04:38 UTC)
Expired
Jun 30, 2008, 1:45 AM EDT
In force
67 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cumberland County, NJ, Gloucester County, NJ, Ocean County, NJ, Salem County, NJ

The radar

The Philadelphia radar (KDIX), 55 km from the middle of the area, began a volume at 04:39 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
Jun 29, 4:37 PM EDTSevere Thunderstorm WatchSPC9 hr
Jun 29, 8:09 PM EDTSevere Thunderstorm WatchSPC7 hr

The nearest sounding before it

Wallops Is Stn, VA (KWAL), launched 00:00Z, 4.6 hours before the alert went out and 187 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 00:00Z on 2008-06-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2674 joules per kilogram.LCLEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Wallops Is Stn, VA at 00:00Z on 2008-06-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 117 square meters per square second.193958Sfc1 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
2674 J/kg
Mixed-layer CIN
-26 J/kg
Mixed-layer LCL
1191 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
117 m²/s²
0-3 km storm-relative helicity
178 m²/s²
Significant tornado parameter
1.6
Supercell composite
15.4

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 300439
SVRPHI
NJC001-005-007-011-015-029-033-300545-
/O.NEW.KPHI.SV.W.0119.080630T0438Z-080630T0545Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1238 AM EDT MON JUN 30 2008

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  ATLANTIC COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHEASTERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHEASTERN CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
  NORTHEASTERN CUMBERLAND COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHEASTERN GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
  SOUTH CENTRAL OCEAN COUNTY IN SOUTHERN NEW JERSEY...
  SOUTHEASTERN SALEM COUNTY IN SOUTHERN NEW JERSEY...

* UNTIL 145 AM EDT

* AT 1234 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
  EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
  FROM 7 MILES NORTH OF ROSENHAYN TO 19 MILES SOUTH OF LONGPORT...OR
  ALONG A LINE EXTENDING FROM 12 MILES NORTHWEST OF VINELAND TO 42
  MILES SOUTHEAST OF VINELAND...AND MOVING NORTHEAST AT 50 MPH.

* SEVERE THUNDERSTORMS WILL BE NEAR...
  VICTORY LAKES...MAYS LANDING...LONGPORT AND FOLSOM BY 1245 AM...
  VENTNOR CITY...POMONA...ELWOOD AND ATLANTIC CITY BY 1250 AM...
  HAMMONTON AND EGG HARBOR CITY BY 1255 AM...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 200 AM MONDAY
MORNING FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW 
JERSEY. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 AM 
MONDAY MORNING FOR NORTHERN AND CENTRAL NEW JERSEY. 

LAT...LON 3951 7425 3950 7432 3953 7434 3953 7441
      3949 7439 3948 7430 3945 7430 3935 7441
      3929 7453 3930 7456 3928 7473 3932 7487
      3925 7490 3947 7521 3989 7464 3965 7416
TIME...MOT...LOC 0438Z 232DEG 50KT 3961 7511 3908 7438

$$

SZATKOWSKI

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 29, 11:03 PM EDTSpecial Marine WarningPHI117 min
Jun 29, 11:51 PM EDTSevere Thunderstorm WarningPHIAtlantic, Cape May, Cumberland69 min
Jun 30, 12:27 AM EDTSpecial Marine WarningPHI2 hr
Jun 30, 1:12 AM EDTSevere Thunderstorm WarningPHIBurlington, Monmouth, Ocean78 min
Jun 30, 1:44 AM EDTSpecial Marine WarningPHI60 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.