Alert archive / New Jersey / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 21, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 7, 2009, 2:05 PM EDT for 5 counties in New Jersey. It was in force for 40 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
- May 7, 2009, 2:05 PM EDT (18:05 UTC)
- Expired
- May 7, 2009, 2:45 PM EDT
- In force
- 40 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Atlantic County, NJ, Camden County, NJ, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ
The radar
The Dover AFB radar (KDOX), 71 km from the middle of the area, began a volume at 18:04 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 nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 6.1 hours before the alert went out and 68 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
- 38 J/kg
- Mixed-layer CIN
- -66 J/kg
- Mixed-layer LCL
- 642 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 60 m²/s²
- 0-3 km storm-relative helicity
- 106 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 071805
SVRPHI
NJC001-007-011-015-033-071915-
/O.NEW.KPHI.SV.W.0021.090507T1805Z-090507T1915Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
205 PM EDT THU MAY 7 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...
NORTHERN CUMBERLAND COUNTY IN SOUTHERN NEW JERSEY...
THIS INCLUDES THE CITIES OF...VINELAND...MILLVILLE...
SOUTHEASTERN GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
SOUTHERN SALEM COUNTY IN SOUTHERN NEW JERSEY...
THIS INCLUDES THE CITY OF SALEM...
* UNTIL 315 PM EDT
* AT 205 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 10
MILES SOUTHWEST OF SALEM...OR 9 MILES EAST OF MIDDLETOWN...AND
MOVING EAST AT 30 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
SHILOH BY 235 PM EDT...
SEABROOK FARMS AND BRIDGETON BY 240 PM EDT...
OLIVET BY 245 PM EDT...
ROSENHAYN AND OLIVET BY 250 PM EDT...
SOUTH VINELAND BY 300 PM EDT...
NEWFIELD AND VINELAND BY 305 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...DESTRUCTIVE HAIL...AND DEADLY CLOUD
TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
&&
LAT...LON 3935 7474 3936 7540 3937 7541 3939 7545
3943 7548 3946 7555 3950 7557 3952 7554
3955 7553 3973 7493
TIME...MOT...LOC 1805Z 261DEG 26KT 3945 7556
$$
TFG1 follow-up statement
000
WWUS51 KPHI 071845
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
245 PM EDT THU MAY 7 2009
NJC001-007-011-015-033-071854-
/O.CAN.KPHI.SV.W.0021.000000T0000Z-090507T1915Z/
SALEM NJ-CUMBERLAND NJ-CAMDEN NJ-GLOUCESTER NJ-ATLANTIC NJ-
245 PM EDT THU MAY 7 2009
...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL ATLANTIC...
SOUTHEASTERN GLOUCESTER...SOUTH CENTRAL CAMDEN...NORTHERN CUMBERLAND
AND SOUTHERN SALEM COUNTIES IS CANCELLED...
THE THUNDERSTORM HAS WEAKENED AND NO LONGER APPEARS SEVERE.
LAT...LON 3935 7474 3936 7540 3937 7541 3939 7545
3943 7548 3946 7555 3950 7557 3952 7554
3955 7553 3973 7493
TIME...MOT...LOC 1844Z 261DEG 26KT 3949 7520
$$
TFGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 9:01 PM EDT | Flood Watch | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Somerset | 19 hr |
| May 7, 3:09 AM EDT | Areal Flood Advisory | PHI | Hunterdon, Morris | 2 hr |
| May 7, 1:22 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester, Salem | 4 hr |
| May 7, 1:42 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Mercer, Middlesex, Somerset | 4 hr |
| May 7, 1:43 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Somerset | 62 min |
| May 7, 2:01 PM EDT | Special Marine Warning | PHI | 89 min | |
| May 7, 2:34 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Mercer, Middlesex, Monmouth | 3 hr |
| May 7, 2:53 PM EDT | Special Marine Warning | PHI | 97 min | |
| May 7, 4:05 PM EDT | Special Marine Warning | PHI | 67 min |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.