Alert archive / New Jersey / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 176, NWS Philadelphia/Mount Holly

August 2, 20096 counties in New Jersey

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 2, 2009, 11:30 AM EDT for 6 counties in New Jersey. It was in force for 60 min. 1 report 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 2, 2009, 11:30 AM EDT (15:30 UTC)
Expired
Aug 2, 2009, 12:30 PM EDT
In force
60 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Atlantic County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ

What was reported inside it

TimeReportWhereRemark
Aug 2, 12:10 PM EDTTSTM WND DMG3 Ene Greenwich, NJTREES AND WIRES DOWN IN HOPEWELL TOWNSHIP.

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, 3.5 hours before the alert went out and 159 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 2009-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2636 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 2009-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 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
2636 J/kg
Mixed-layer CIN
-8 J/kg
Mixed-layer LCL
482 m above ground
0-6 km bulk shear
30 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
50 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.4

Open this sounding in Storm Lab

The text

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

000 
WUUS51 KPHI 021530
SVRPHI
NJC001-007-009-011-015-033-021630-
/O.NEW.KPHI.SV.W.0176.090802T1530Z-090802T1630Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1130 AM EDT SUN AUG 2 2009

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL ATLANTIC COUNTY IN SOUTHERN NEW JERSEY...
  SOUTH CENTRAL CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
  WEST CENTRAL CAPE MAY COUNTY IN SOUTHERN NEW JERSEY...
  CUMBERLAND COUNTY IN SOUTHERN NEW JERSEY...
  THIS INCLUDES THE CITIES OF...VINELAND...MILLVILLE...
  SOUTHERN GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
  SALEM COUNTY IN SOUTHERN NEW JERSEY...
  THIS INCLUDES THE CITY OF SALEM...

* UNTIL 1230 PM EDT

* AT 1129 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND
  DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  WOODSTOWN...AND MOVING EAST AT 25 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  WOODSTOWN AROUND 1135 AM EDT...
  ELMER AND OLIVET AROUND 1155 AM EDT...
  CLAYTON AROUND 1205 PM EDT...
  NEWFIELD AROUND 1215 PM EDT...
  VICTORY LAKES AND WILLIAMSTOWN AROUND 1220 PM EDT...

LAT...LON 3944 7488 3937 7485 3917 7491 3918 7503
      3921 7504 3917 7514 3920 7518 3924 7518
      3926 7524 3930 7526 3928 7529 3934 7534
      3933 7537 3936 7540 3941 7543 3946 7555
      3963 7552 3976 7483
TIME...MOT...LOC 1530Z 271DEG 22KT 3962 7536

$$

IOVINO

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 2:19 AM EDTFlash Flood WatchPHIBurlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 5 more13 hr
Aug 2, 7:34 AM EDTAreal Flood AdvisoryPHIHunterdon, Mercer3 hr
Aug 2, 8:48 AM EDTAreal Flood WarningPHIMercer4 hr
Aug 2, 10:53 AM EDTSevere Thunderstorm WarningPHICamden, Gloucester, Salem67 min
Aug 2, 11:14 AM EDTSevere Thunderstorm WarningPHIHunterdon, Mercer, Warren61 min
Aug 2, 11:18 AM EDTFlash Flood WarningPHIHunterdon, Mercer, Middlesex, Morris, Somerset9 hr
Aug 2, 11:25 AM EDTSevere Thunderstorm WarningPHIBurlington, Camden, Mercer65 min
Aug 2, 11:33 AM EDTSpecial Marine WarningPHI87 min
Aug 2, 11:48 AM EDTSevere Thunderstorm WarningPHIHunterdon, Mercer, Middlesex, Monmouth, Somerset57 min
Aug 2, 11:51 AM EDTTornado WarningPHIMercer24 min
Aug 2, 12:13 PM EDTAreal Flood AdvisoryPHIAtlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 3 more3 hr
Aug 2, 12:23 PM EDTSpecial Marine WarningPHI97 min
Aug 2, 12:27 PM EDTSevere Thunderstorm WarningPHIMorris, Somerset48 min
Aug 2, 12:45 PM EDTSevere Thunderstorm WarningPHIMiddlesex, Monmouth60 min
Aug 2, 12:49 PM EDTRiver Flood WarningPHIMercer8 hr
Aug 2, 1:28 PM EDTSpecial Marine WarningPHI92 min
Aug 2, 1:43 PM EDTSevere Thunderstorm WarningPHICape May47 min
Aug 2, 1:49 PM EDTSpecial Marine WarningPHI86 min
Aug 2, 1:51 PM EDTSpecial Marine WarningPHI84 min
Aug 2, 1:56 PM EDTSpecial Marine WarningPHI2 hr
Aug 2, 1:59 PM EDTRiver Flood WarningPHIHunterdon, Somerset13 hr
Aug 2, 4:16 PM EDTRiver Flood WarningPHIMiddlesex, Somerset20 hr
Aug 2, 4:16 PM EDTRiver Flood WarningPHIMiddlesex, Somerset22 hr

Nearby

Severe Thunderstorm Warnings in New Jersey, 2009Every severe thunderstorm warning in 2009

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.