Alert archive / New Jersey / Severe Thunderstorm Warnings in 2008
Severe Thunderstorm Warning 241, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 11, 2008, 8:50 AM EDT for 5 counties in New Jersey. It was in force for 40 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 11, 2008, 8:50 AM EDT (12:50 UTC)
- Expired
- Aug 11, 2008, 9:30 AM EDT
- In force
- 40 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Burlington County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Somerset County, NJ
The radar
The Philadelphia radar (KDIX), 43 km from the middle of the area, began a volume at 12:52 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 11, 9:15 AM EDT | TSTM WND DMG | Windsor, NJ | TREE LIMBS DOWN. |
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, 0.8 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.
- Mixed-layer CAPE
- 588 J/kg
- Mixed-layer CIN
- -38 J/kg
- Mixed-layer LCL
- 662 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 20 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 111250
SVRPHI
NJC005-021-023-025-035-111330-
/O.NEW.KPHI.SV.W.0241.080811T1250Z-080811T1330Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
850 AM EDT MON AUG 11 2008
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EASTERN MERCER COUNTY IN CENTRAL NEW JERSEY...
WEST CENTRAL MONMOUTH COUNTY IN CENTRAL NEW JERSEY...
SOUTHERN MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...
SOUTHEASTERN SOMERSET COUNTY IN NORTHERN NEW JERSEY...
EXTREME NORTH CENTRAL BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
* UNTIL 930 AM EDT
* AT 848 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
WHITE HORSE...OR ABOUT NEAR TRENTON...AND MOVING NORTHEAST AT 25
MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
MERCERVILLE-HAMILTON SQUARE AND ALLENTOWN BY 855 AM...
WINDSOR BY 905 AM...
CLEARBROOK PARK BY 920 AM...
DAYTON...JAMESBURG...SOUTH BRUNSWICK AND KENDALL PARK BY 925 AM...
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.
LAT...LON 4052 7461 4040 7430 4010 7463 4014 7471
4018 7474
TIME...MOT...LOC 1250Z 220DEG 25KT 4018 7468
$$1 follow-up statement
000
WWUS51 KPHI 111324
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
924 AM EDT MON AUG 11 2008
NJC005-021-023-025-035-111334-
/O.EXP.KPHI.SV.W.0241.000000T0000Z-080811T1330Z/
SOMERSET NJ-MERCER NJ-MIDDLESEX NJ-MONMOUTH NJ-BURLINGTON NJ-
924 AM EDT MON AUG 11 2008
...THE SEVERE THUNDERSTORM WARNING FOR EXTREME NORTH CENTRAL
BURLINGTON...WEST CENTRAL MONMOUTH...SOUTHERN MIDDLESEX...EASTERN
MERCER AND SOUTHEASTERN SOMERSET COUNTIES WILL EXPIRE AT 930 AM
EDT...
THE THREAT FOR SEVERE WEATHER HAS DIMINISHED. THE WARNING HAS BEEN
ALLOWED TO EXPIRE.
LAT...LON 4052 7461 4040 7430 4010 7463 4014 7471
4018 7474
TIME...MOT...LOC 1324Z 220DEG 25KT 4036 7448
$$The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 8:06 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cumberland, Ocean | 84 min |
| Aug 10, 8:13 PM EDT | Special Marine Warning | PHI | 92 min | |
| Aug 10, 8:45 PM EDT | Special Marine Warning | PHI | 28 min | |
| Aug 10, 9:35 PM EDT | Special Marine Warning | PHI | 85 min | |
| Aug 11, 10:55 AM EDT | Special Marine Warning | PHI | 20 min | |
| Aug 11, 11:23 AM EDT | Severe Thunderstorm Warning | PHI | Sussex, Warren | 38 min |
| Aug 11, 1:07 PM EDT | Special Marine Warning | PHI | 83 min | |
| Aug 11, 5:19 PM EDT | Special Marine Warning | PHI | 86 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.