Alert archive / New Jersey / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 6, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Mar 29, 2009, 7:09 PM EDT for 7 counties in New Jersey; Bucks County, Pennsylvania. It was in force for 51 min. 4 reports 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
- Mar 29, 2009, 7:09 PM EDT (23:09 UTC)
- Expired
- Mar 29, 2009, 8:00 PM EDT
- In force
- 51 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Burlington County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ, Somerset County, NJ, Bucks County, PA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Mar 29, 7:20 PM EDT | HAIL 0.75 | 5 S Mount Holly, NJ | PENNY SIZE HAIL REPORTED IN MOUNT LAUREL. |
| Mar 29, 7:25 PM EDT | HAIL 1 | 3 Se Mount Holly, NJ | QUARTER SIZE HAIL REPORTED IN HAINESPORT. |
| Mar 29, 7:30 PM EDT | HAIL 0.88 | Mount Holly, NJ | NICKEL SIZE HAIL REPORTED AT THE NATIONAL WEATHER SERVICE OFFICE. |
| Mar 29, 7:40 PM EDT | HAIL 0.88 | Jobstown, NJ | NICKEL SIZE HAIL REPORTED IN JOBSTOWN, PARTIALLY COVERING THE GROUND. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 11.2 hours before the alert went out and 176 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 424 m above ground
- 0-6 km bulk shear
- 48 kt
- 0-1 km storm-relative helicity
- 474 m²/s²
- 0-3 km storm-relative helicity
- 554 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 292309 SVRPHI NJC005-019-021-023-025-029-035-PAC017-300000- /O.NEW.KPHI.SV.W.0006.090329T2309Z-090330T0000Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 709 PM EDT SUN MAR 29 2009 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... MERCER COUNTY IN CENTRAL NEW JERSEY... THIS INCLUDES THE CITY OF TRENTON... SOUTHWESTERN MONMOUTH COUNTY IN CENTRAL NEW JERSEY... WESTERN MIDDLESEX COUNTY IN NORTHERN NEW JERSEY... THIS INCLUDES THE CITY OF NEW BRUNSWICK... SOUTHERN SOMERSET COUNTY IN NORTHERN NEW JERSEY... THIS INCLUDES THE CITY OF SOMERVILLE... SOUTHEASTERN HUNTERDON COUNTY IN NORTHWEST NEW JERSEY... SOUTHEASTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA... NORTHWESTERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY... NORTHWESTERN OCEAN COUNTY IN SOUTHERN NEW JERSEY... * UNTIL 800 PM EDT * AT 708 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR WILLINGBORO...OR 11 MILES NORTHEAST OF CAMDEN...AND MOVING NORTHEAST AT 45 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... BURLINGTON...MOUNT HOLLY...LUMBERTON AND BRISTOL BY 715 PM EDT... JACKSONVILLE AND FLORENCE BY 720 PM EDT... JOBSTOWN BY 725 PM EDT... GEORGETOWN...BORDENTOWN AND WRIGHTSTOWN BY 730 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 3985 7489 4022 7501 4064 7452 4014 7423 TIME...MOT...LOC 2309Z 243DEG 37KT 4000 7491 $$ STAUBER
1 follow-up statement
000
WWUS51 KPHI 292344
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
744 PM EDT SUN MAR 29 2009
NJC019-PAC017-292354-
/O.CAN.KPHI.SV.W.0006.000000T0000Z-090330T0000Z/
HUNTERDON NJ-BUCKS PA-
744 PM EDT SUN MAR 29 2009
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BUCKS AND
SOUTHEASTERN HUNTERDON COUNTIES IS CANCELLED...
LAT...LON 3991 7474 4024 7472 4064 7452 4014 7423
TIME...MOT...LOC 2344Z 235DEG 43KT 4056 7433 4014 7449
3973 7482
$$
NJC005-021-023-025-029-035-300000-
/O.CON.KPHI.SV.W.0006.000000T0000Z-090330T0000Z/
SOMERSET NJ-MERCER NJ-MIDDLESEX NJ-MONMOUTH NJ-OCEAN NJ-BURLINGTON NJ-
744 PM EDT SUN MAR 29 2009
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR NORTH CENTRAL BURLINGTON...NORTHWESTERN OCEAN...SOUTHWESTERN
MONMOUTH...WESTERN MIDDLESEX...EASTERN MERCER AND SOUTHEASTERN
SOMERSET COUNTIES...
AT 742 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING NICKEL
SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THESE STORMS
WERE LOCATED ALONG A LINE EXTENDING FROM 6 MILES NORTHEAST OF NEW
BRUNSWICK TO CREAM RIDGE TO 19 MILES SOUTHWEST OF PEMBERTON
HEIGHTS...OR ALONG A LINE EXTENDING FROM PERTH AMBOY TO 15 MILES
SOUTHEAST OF TRENTON TO 19 MILES NORTHEAST OF VINELAND...MOVING
NORTHEAST AT 50 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
SIX FLAGS THEME PARK...MANALAPAN...YORKETOWN AND ENGLISHTOWN BY 750
PM EDT...
WOODRUFF BY 755 PM EDT...
WEST FREEHOLD...CASSVILLE AND JACKSONS MILLS BY 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 NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.
&&
LAT...LON 3991 7474 4024 7472 4064 7452 4014 7423
TIME...MOT...LOC 2344Z 235DEG 43KT 4056 7433 4014 7449
3973 7482
$$
STAUBERThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 29, 3:34 PM EDT | Gale Warning | PHI | 24 hr | |
| Mar 29, 6:11 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester, Salem | 64 min |
| Mar 29, 7:53 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Middlesex, Monmouth, Ocean | 67 min |
| Mar 29, 4:41 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 94 min |
| Mar 29, 4:58 PM EDT | Tornado Warning | PHI | Berks | 62 min |
| Mar 29, 5:11 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Lehigh | 64 min |
| Mar 29, 5:27 PM EDT | Severe Thunderstorm Warning | PHI | Lehigh | 63 min |
| Mar 29, 5:55 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Chester, Lehigh, Montgomery, Northampton | 50 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.