Alert archive / New Jersey / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 116, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 1, 2009, 7:05 PM EDT for Bucks County, Pennsylvania; Burlington County, Mercer County, New Jersey. It was in force for 55 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
- Jul 1, 2009, 7:05 PM EDT (23:05 UTC)
- Expired
- Jul 1, 2009, 8:00 PM EDT
- In force
- 55 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Burlington County, NJ, Mercer County, NJ, Bucks County, PA
The radar
The Philadelphia radar (KDIX), 33 km from the middle of the area, began a volume at 23:06 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, 11.1 hours before the alert went out and 139 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
- 303 J/kg
- Mixed-layer CIN
- -83 J/kg
- Mixed-layer LCL
- 1065 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 131 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS51 KPHI 012305 SVRPHI NJC005-021-PAC017-020000- /O.NEW.KPHI.SV.W.0116.090701T2305Z-090702T0000Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 705 PM EDT WED JUL 1 2009 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTH CENTRAL MERCER COUNTY IN CENTRAL NEW JERSEY... EXTREME SOUTHEASTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA... NORTH CENTRAL BURLINGTON COUNTY IN SOUTHERN NEW JERSEY... * UNTIL 800 PM EDT * AT 703 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED ANOTHER SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR JACKSONVILLE...OR 10 MILES SOUTH OF TRENTON...AND MOVING NORTHEAST AT 10 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... JOBSTOWN AROUND 710 PM EDT... FLORENCE AROUND 715 PM EDT... BORDENTOWN AROUND 745 PM EDT... CROSSWICKS AND WHITE HORSE AROUND 800 PM EDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY LIGHTNING IS ONE OF NATURES GREATEST KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. && LAT...LON 4022 7470 4016 7462 3999 7472 4006 7486 TIME...MOT...LOC 2304Z 222DEG 8KT 4008 7478 $$ TFG
1 follow-up statement
000
WWUS51 KPHI 012334
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
734 PM EDT WED JUL 1 2009
PAC017-012343-
/O.CAN.KPHI.SV.W.0116.000000T0000Z-090702T0000Z/
BUCKS PA-
734 PM EDT WED JUL 1 2009
...THE SEVERE THUNDERSTORM WARNING FOR EXTREME SOUTHEASTERN BUCKS
COUNTY IS CANCELLED...
THE SEVERE STORM HAS REMAINED IN BURLINGTON COUNTY.
LAT...LON 3999 7472 4006 7486 4012 7480 4013 7478
4012 7476 4015 7472 4018 7474 4022 7470
4016 7462
TIME...MOT...LOC 2333Z 280DEG 5KT 4007 7472
$$
NJC005-021-020000-
/O.CON.KPHI.SV.W.0116.000000T0000Z-090702T0000Z/
MERCER NJ-BURLINGTON NJ-
734 PM EDT WED JUL 1 2009
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR NORTH CENTRAL BURLINGTON AND SOUTH CENTRAL MERCER COUNTIES...
AT 733 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR JACKSONVILLE...OR 11 MILES SOUTH OF TRENTON...MOVING
EAST AT 5 MPH. THIS STORM WILL ALSO PRODUCE TORRENTIAL DOWNPOURS
AND CAUSE POOR DRAINAGE FLOODING.
THE SEVERE THUNDERSTORM WILL BE NEAR...
8 MILES SOUTH OF YARDVILLE-GROVEVILLE BY 750 PM EDT...
JOBSTOWN BY 755 PM EDT...
6 MILES SOUTH OF CROSSWICKS BY 800 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 3999 7472 4006 7486 4012 7480 4013 7478
4012 7476 4015 7472 4018 7474 4022 7470
4016 7462
TIME...MOT...LOC 2333Z 280DEG 5KT 4007 7472
$$The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 10:17 AM EDT | Special Marine Warning | PHI | 58 min | |
| Jul 1, 10:34 AM EDT | Special Marine Warning | PHI | 56 min | |
| Jul 1, 1:26 PM EDT | Special Marine Warning | PHI | 2 hr | |
| Jul 1, 6:55 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Middlesex, Monmouth, Ocean | 65 min |
| Jul 1, 7:38 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 67 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2009Severe Thunderstorm Warnings in Pennsylvania, 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.