Alert archive / New Jersey / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 81, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 7, 2012, 6:54 PM EDT for 5 counties in New Jersey. It was in force for 46 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
- Jul 7, 2012, 6:54 PM EDT (22:54 UTC)
- Expired
- Jul 7, 2012, 7:40 PM EDT
- In force
- 46 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ, Somerset County, NJ
The radar
The Philadelphia radar (KDIX), 33 km from the middle of the area, began a volume at 22:55 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 |
|---|---|---|---|
| Jul 7, 7:01 PM EDT | TSTM WND DMG | Monroe Twp, NJ | LARGE TREE LIMBS DOWN. |
| Jul 7, 7:10 PM EDT | TSTM WND DMG | Cream Ridge, NJ | TWO TREES ALONG SHOULDER OF INTERSTATE 195 MILE POST NUMBER 11. |
| Jul 7, 7:15 PM EDT | TSTM WND DMG | Freehold, NJ | TREES DOWN. |
| Jul 7, 7:30 PM EDT | TSTM WND DMG | Jackson Twp, NJ | MULTIPLE TREES DOWN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 7, 11:41 AM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 7, 6:14 PM EDT | Severe Thunderstorm Watch | SPC | 3 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 10.9 hours before the alert went out and 166 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
- 335 J/kg
- Mixed-layer CIN
- -291 J/kg
- Mixed-layer LCL
- 1325 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 104 m²/s²
- 0-3 km storm-relative helicity
- 164 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
859
WUUS51 KPHI 072254
SVRPHI
NJC021-023-025-029-035-080000-
/O.NEW.KPHI.SV.W.0081.120707T2254Z-120708T0000Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
654 PM EDT SAT JUL 7 2012
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...
WESTERN MONMOUTH COUNTY IN CENTRAL NEW JERSEY...
MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...
THIS INCLUDES THE CITY OF NEW BRUNSWICK...
SOUTHERN SOMERSET COUNTY IN NORTHERN NEW JERSEY...
NORTHWESTERN OCEAN COUNTY IN SOUTHERN NEW JERSEY...
* UNTIL 800 PM EDT
* AT 651 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
HOPEWELL...OR 10 MILES NORTH OF TRENTON...AND MOVING SOUTHEAST AT
35 MPH.
* THE SEVERE THUNDERSTORM WILL BE NEAR...
PRINCETON AROUND 700 PM EDT...
MERCERVILLE-HAMILTON SQUARE AROUND 705 PM EDT...
WINDSOR AND EDINBURG AROUND 710 PM EDT...
HIGHTSTOWN AND TWIN RIVERS AROUND 715 PM EDT...
ROOSEVELT AND ALLENTOWN AROUND 720 PM EDT...
IMLAYSTOWN AND CLARKSBURG AROUND 725 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS...LARGE HAIL...AND DEADLY CLOUD TO
GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...
PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 700 PM EDT
SATURDAY EVENING FOR NORTHERN NEW JERSEY AND EASTERN PENNSYLVANIA. A
SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL MIDNIGHT EDT
SUNDAY MORNING FOR NORTHERN DELAWARE AND NORTHEAST MARYLAND AND NEW
JERSEY AND SOUTHEASTERN PENNSYLVANIA.
&&
LAT...LON 4001 7443 4008 7456 4014 7459 4014 7462
4018 7469 4018 7471 4016 7471 4019 7476
4021 7477 4026 7485 4032 7490 4058 7457
4033 7415
TIME...MOT...LOC 2255Z 314DEG 29KT 4034 7470
$$
HAYES3 follow-up statements
543
WWUS51 KPHI 072311
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
711 PM EDT SAT JUL 7 2012
NJC035-072321-
/O.CAN.KPHI.SV.W.0081.000000T0000Z-120708T0000Z/
SOMERSET NJ-
711 PM EDT SAT JUL 7 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN SOMERSET COUNTY IS
CANCELLED...
THE STORM THAT PROMPTED THE WARNING HAS MOVED OUT OF THE AREA.
PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT
SUNDAY MORNING FOR NORTHERN DELAWARE AND NORTHEAST MARYLAND AND NEW
JERSEY AND SOUTHEAST PENNSYLVANIA.
LAT...LON 4001 7443 4008 7455 4014 7459 4014 7462
4018 7469 4018 7471 4016 7472 4019 7476
4024 7480 4023 7478 4024 7477 4051 7446
4033 7415
TIME...MOT...LOC 2311Z 314DEG 29KT 4025 7458
$$
NJC021-023-025-029-080000-
/O.CON.KPHI.SV.W.0081.000000T0000Z-120708T0000Z/
MERCER NJ-MIDDLESEX NJ-MONMOUTH NJ-OCEAN NJ-
711 PM EDT SAT JUL 7 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR NORTHWESTERN OCEAN...WESTERN MONMOUTH...SOUTHERN MIDDLESEX AND
MERCER COUNTIES...
AT 710 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE
HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR WINDSOR...OR 9 MILES EAST OF TRENTON...MOVING SOUTHEAST
AT 35 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
IMLAYSTOWN AND ROOSEVELT BY 720 PM EDT...
IMLAYSTOWN...CLARKSBURG...CREAM RIDGE AND 7 MILES SOUTHWEST OF
MANALAPAN BY 725 PM EDT...
SIX FLAGS THEME PARK BY 730 PM EDT...
CASSVILLE...JACKSONS MILLS AND WOODRUFF BY 735 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT
SUNDAY MORNING FOR NORTHERN DELAWARE AND NORTHEAST MARYLAND AND NEW
JERSEY AND SOUTHEAST PENNSYLVANIA.
&&
LAT...LON 4001 7443 4008 7455 4014 7459 4014 7462
4018 7469 4018 7471 4016 7472 4019 7476
4024 7480 4023 7478 4024 7477 4051 7446
4033 7415
TIME...MOT...LOC 2311Z 314DEG 29KT 4025 7458
$$
HAYES620
WWUS51 KPHI 072330
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
730 PM EDT SAT JUL 7 2012
NJC021-023-072340-
/O.CAN.KPHI.SV.W.0081.000000T0000Z-120708T0000Z/
MERCER NJ-MIDDLESEX NJ-
730 PM EDT SAT JUL 7 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN MIDDLESEX AND MERCER
COUNTIES IS CANCELLED...
THE LINE OF STORMS THAT PROMPTED THE WARNING HAVE MOVED OUT OF THE
AREA.
PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT
SUNDAY MORNING FOR NORTHERN DELAWARE AND NORTHEAST MARYLAND AND NEW
JERSEY AND SOUTHEAST PENNSYLVANIA.
LAT...LON 4001 7443 4008 7455 4014 7459 4014 7454
4017 7453 4018 7456 4026 7445 4027 7440
4034 7433 4039 7426 4033 7415
TIME...MOT...LOC 2330Z 314DEG 29KT 4014 7444
$$
NJC025-029-080000-
/O.CON.KPHI.SV.W.0081.000000T0000Z-120708T0000Z/
MONMOUTH NJ-OCEAN NJ-
730 PM EDT SAT JUL 7 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 800 PM EDT
FOR NORTHWESTERN OCEAN AND WESTERN MONMOUTH COUNTIES...
AT 727 PM EDT...A SEVERE THUNDERSTORM WAS REPORTED CAPABLE OF
PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH.
THIS STORM WAS LOCATED NEAR SIX FLAGS THEME PARK...OR 16 MILES EAST
OF TRENTON...MOVING SOUTHEAST AT 35 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
CASSVILLE...WOODRUFF AND JACKSONS MILLS BY 735 PM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT
SUNDAY MORNING FOR NORTHERN DELAWARE AND NORTHEAST MARYLAND AND NEW
JERSEY AND SOUTHEAST PENNSYLVANIA.
&&
LAT...LON 4001 7443 4008 7455 4014 7459 4014 7454
4017 7453 4018 7456 4026 7445 4027 7440
4034 7433 4039 7426 4033 7415
TIME...MOT...LOC 2330Z 314DEG 29KT 4014 7444
$$
HAYES636
WWUS51 KPHI 072340
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
740 PM EDT SAT JUL 7 2012
NJC025-029-072349-
/O.CAN.KPHI.SV.W.0081.000000T0000Z-120708T0000Z/
MONMOUTH NJ-OCEAN NJ-
740 PM EDT SAT JUL 7 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN OCEAN AND WESTERN
MONMOUTH COUNTIES IS CANCELLED...
THE STORMS THAT PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA. A
SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN SECTIONS
OF THE TWO COUNTIES.
PLEASE REPORT HAIL OR STRONG WINDS TO THE NATIONAL WEATHER SERVICE BY
CALLING TOLL FREE...1-877-633-6772...WHEN YOU CAN DO SO SAFELY.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT EDT
SUNDAY MORNING FOR NORTHERN DELAWARE AND NORTHEAST MARYLAND AND NEW
JERSEY AND SOUTHEAST PENNSYLVANIA.
LAT...LON 4001 7443 4008 7455 4014 7459 4014 7454
4017 7453 4018 7456 4026 7445 4027 7440
4034 7433 4039 7426 4033 7415
TIME...MOT...LOC 2339Z 314DEG 29KT 4008 7438
$$
HAYESThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 7, 12:30 PM EDT | Special Weather Statement | PHI | Morris, Sussex | 90 min |
| Jul 7, 5:57 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Warren | 63 min |
| Jul 7, 6:25 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Somerset, Warren | 37 min |
| Jul 7, 7:03 PM EDT | Special Weather Statement | PHI | Burlington, Camden, Gloucester | 57 min |
| Jul 7, 7:22 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 53 min |
| Jul 7, 7:24 PM EDT | Special Marine Warning | PHI | 96 min | |
| Jul 7, 7:42 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Ocean | 63 min |
| Jul 7, 7:55 PM EDT | Special Weather Statement | PHI | Atlantic | 65 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2012Every severe thunderstorm warning in 2012
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.