Alert archive / New Jersey / Severe Thunderstorm Warnings in 2014
Severe Thunderstorm Warning 138, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 15, 2014, 4:26 PM EDT for 5 counties in New Jersey; Bucks County, Pennsylvania. It was in force for 64 min. 7 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 15, 2014, 4:26 PM EDT (20:26 UTC)
- Expired
- Jul 15, 2014, 5:30 PM EDT
- In force
- 64 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Burlington County, NJ, Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Somerset County, NJ, Bucks County, PA
The radar
The Philadelphia radar (KDIX), 51 km from the middle of the area, began a volume at 20:26 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 15, 4:42 PM EDT | HAIL 0.25 | Lower Makefield Twp, PA | |
| Jul 15, 4:50 PM EDT | HAIL 0.25 | Ewing, NJ | |
| Jul 15, 4:50 PM EDT | HAIL 0.75 | West Trenton, NJ | DIME SIZE HAIL REPORTED. |
| Jul 15, 4:55 PM EDT | TSTM WND DMG | West Trenton, NJ | LARGE TREE BRANCH DOWN ON CAR. |
| Jul 15, 4:55 PM EDT | TSTM WND GST 50 | Trenton, NJ | |
| Jul 15, 4:55 PM EDT | HAIL 0.75 | West Trenton, NJ | |
| Jul 15, 4:56 PM EDT | TSTM WND GST 51 | Trenton Airport, NJ |
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 15, 1:43 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 8.4 hours before the alert went out and 145 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
- 1120 J/kg
- Mixed-layer CIN
- -68 J/kg
- Mixed-layer LCL
- 730 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 111 m²/s²
- Significant tornado parameter
- 0.4
- Supercell composite
- 3.4
The text
As transmitted, in the capitals the NWS used until 2016.
157 WUUS51 KPHI 152026 SVRPHI NJC005-019-021-023-035-PAC017-152130- /O.NEW.KPHI.SV.W.0138.140715T2026Z-140715T2130Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 426 PM EDT TUE JUL 15 2014 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN HUNTERDON COUNTY IN NORTHWEST NEW JERSEY... MERCER COUNTY IN CENTRAL NEW JERSEY... SOUTHWESTERN SOMERSET COUNTY IN NORTHERN NEW JERSEY... SOUTHEASTERN BUCKS COUNTY IN SOUTHEAST PENNSYLVANIA... SOUTHWESTERN MIDDLESEX COUNTY IN NORTHERN NEW JERSEY... NORTH CENTRAL BURLINGTON COUNTY IN SOUTHERN NEW JERSEY... * UNTIL 530 PM EDT * AT 423 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM. THE STORM WAS NEAR LEVITTOWN...MOVING NORTHEAST AT 20 MPH. THIS STORM IS CAPABLE OF PRODUCING ONE INCH DIAMETER HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... NEWTOWN AND BORDENTOWN AROUND 435 PM EDT... WOODSIDE AROUND 440 PM EDT... TRENTON AND YARDLEY AROUND 445 PM EDT... EWING AND WASHINGTON CROSSING AROUND 455 PM EDT... LAWRENCEVILLE AND PENNINGTON AROUND 505 PM EDT... PRINCETON AND HOPEWELL AROUND 520 PM EDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE NATIONAL WEATHER SERVICE. FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS SEVERE THUNDERSTORM. WHEN THUNDER ROARS...MOVE INDOORS! REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. && LAT...LON 4047 7484 4038 7450 4005 7477 4013 7498 TIME...MOT...LOC 2027Z 207DEG 17KT 4015 7485 $$ FORECASTER: HEAVENER
3 follow-up statements
427
WWUS51 KPHI 152038
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
438 PM EDT TUE JUL 15 2014
NJC005-152049-
/O.CAN.KPHI.SV.W.0138.000000T0000Z-140715T2130Z/
BURLINGTON NJ-
438 PM EDT TUE JUL 15 2014
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL BURLINGTON
COUNTY IS CANCELLED...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.
LAT...LON 4018 7470 4018 7471 4016 7471 4013 7474
4017 7495 4047 7484 4038 7450
TIME...MOT...LOC 2039Z 207DEG 17KT 4020 7482
$$
NJC019-021-023-035-PAC017-152130-
/O.CON.KPHI.SV.W.0138.000000T0000Z-140715T2130Z/
HUNTERDON NJ-MERCER NJ-SOMERSET NJ-BUCKS PA-MIDDLESEX NJ-
438 PM EDT TUE JUL 15 2014
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR SOUTHWESTERN MIDDLESEX...SOUTHEASTERN BUCKS...SOUTHWESTERN
SOMERSET...MERCER AND SOUTHEASTERN HUNTERDON COUNTIES...
AT 436 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 FAIRLESS HILLS...OR NEAR TRENTON...MOVING NORTHEAST AT
20 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
MORRISVILLE...TRENTON AND YARDLEY BY 445 PM EDT...
EWING AND WASHINGTON CROSSING BY 450 PM EDT...
WASHINGTON CROSSING BY 455 PM EDT...
LAWRENCEVILLE AND PENNINGTON BY 505 PM EDT...
PRINCETON JUNCTION BY 515 PM EDT...
PRINCETON BY 520 PM EDT...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.
LAT...LON 4018 7470 4018 7471 4016 7471 4013 7474
4017 7495 4047 7484 4038 7450
TIME...MOT...LOC 2039Z 207DEG 17KT 4020 7482
$$
HEAVENER571
WWUS51 KPHI 152057
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
457 PM EDT TUE JUL 15 2014
PAC017-152108-
/O.CAN.KPHI.SV.W.0138.000000T0000Z-140715T2130Z/
BUCKS PA-
457 PM EDT TUE JUL 15 2014
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BUCKS COUNTY IS
CANCELLED...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.
LAT...LON 4024 7467 4024 7483 4030 7488 4047 7484
4038 7450
TIME...MOT...LOC 2058Z 207DEG 17KT 4028 7477
$$
NJC019-021-023-035-152130-
/O.CON.KPHI.SV.W.0138.000000T0000Z-140715T2130Z/
HUNTERDON NJ-MERCER NJ-SOMERSET NJ-MIDDLESEX NJ-
457 PM EDT TUE JUL 15 2014
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR SOUTHWESTERN MIDDLESEX...SOUTHWESTERN SOMERSET...NORTHERN MERCER
AND SOUTHEASTERN HUNTERDON COUNTIES...
AT 455 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 EWING...OR NEAR TRENTON...MOVING
NORTHEAST AT 20 MPH.
THE SEVERE THUNDERSTORM WILL BE NEAR...
LAWRENCEVILLE AND PENNINGTON BY 505 PM EDT...
PRINCETON JUNCTION BY 515 PM EDT...
PRINCETON AND HOPEWELL BY 520 PM EDT...
PRINCETON NORTH BY 525 PM EDT...
SKILLMAN...HEATHCOTE AND 7 MILES WEST OF MONMOUTH JUNCTION BY 530
PM EDT...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.
LAT...LON 4024 7467 4024 7483 4030 7488 4047 7484
4038 7450
TIME...MOT...LOC 2058Z 207DEG 17KT 4028 7477
$$
HEAVENER338
WWUS51 KPHI 152121
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
521 PM EDT TUE JUL 15 2014
NJC019-023-152131-
/O.CAN.KPHI.SV.W.0138.000000T0000Z-140715T2130Z/
HUNTERDON NJ-MIDDLESEX NJ-
521 PM EDT TUE JUL 15 2014
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MIDDLESEX AND
SOUTHEASTERN HUNTERDON COUNTIES IS CANCELLED...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.
LAT...LON 4038 7460 4037 7462 4034 7463 4038 7481
4042 7480 4042 7475 4045 7475 4040 7459
TIME...MOT...LOC 2121Z 207DEG 17KT 4038 7471
$$
NJC021-035-152130-
/O.CON.KPHI.SV.W.0138.000000T0000Z-140715T2130Z/
MERCER NJ-SOMERSET NJ-
521 PM EDT TUE JUL 15 2014
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT
FOR SOUTHWESTERN SOMERSET AND NORTH CENTRAL MERCER COUNTIES...
AT 519 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 PRINCETON...OR 10 MILES NORTH OF TRENTON...MOVING
NORTHEAST AT 20 MPH.
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...MOVE INDOORS TO A
STURDY BUILDING AND STAY AWAY FROM WINDOWS. WHEN IT IS SAFE TO DO
SO...REPORT SEVERE WEATHER TO LOCAL LAW ENFORCEMENT OR TO THE
NATIONAL WEATHER SERVICE.
LAT...LON 4038 7460 4037 7462 4034 7463 4038 7481
4042 7480 4042 7475 4045 7475 4040 7459
TIME...MOT...LOC 2121Z 207DEG 17KT 4038 7471
$$
HEAVENERThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 14, 8:19 PM EDT | Flash Flood Warning | PHI | Burlington, Camden, Hunterdon, Mercer, Middlesex, Monmouth and 1 more | 4 hr |
| Jul 14, 8:19 PM EDT | Tornado Warning | PHI | Burlington | 26 min |
| Jul 14, 8:36 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Monmouth, Ocean | 54 min |
| Jul 14, 8:43 PM EDT | Flash Flood Warning | PHI | Burlington, Monmouth, Ocean | 4 hr |
| Jul 14, 9:06 PM EDT | Special Marine Warning | PHI | 84 min | |
| Jul 14, 10:26 PM EDT | Special Marine Warning | PHI | 49 min | |
| Jul 15, 2:50 AM EDT | Areal Flood Warning | PHI | Ocean | 5 hr |
| Jul 15, 3:53 AM EDT | Small Craft Advisory | PHI | 24 hr | |
| Jul 15, 1:09 PM EDT | Special Weather Statement | PHI | Somerset | 66 min |
| Jul 15, 1:21 PM EDT | Special Weather Statement | PHI | Middlesex, Monmouth | 54 min |
| Jul 15, 1:22 PM EDT | Areal Flood Advisory | PHI | Burlington, Hunterdon, Mercer, Middlesex, Monmouth, Morris and 2 more | 3 hr |
| Jul 15, 1:36 PM EDT | Special Weather Statement | PHI | Monmouth | 54 min |
| Jul 15, 1:50 PM EDT | Flash Flood Warning | PHI | Middlesex, Monmouth, Ocean | 4 hr |
| Jul 15, 1:52 PM EDT | Special Weather Statement | PHI | Burlington, Camden | 68 min |
| Jul 15, 2:17 PM EDT | Special Weather Statement | PHI | Mercer | 43 min |
| Jul 15, 2:22 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester, Salem | 4 hr |
| Jul 15, 2:29 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Monmouth, Ocean | 51 min |
| Jul 15, 2:30 PM EDT | Severe Thunderstorm Warning | PHI | Mercer, Middlesex, Monmouth | 41 min |
| Jul 15, 2:43 PM EDT | Special Weather Statement | PHI | Monmouth | 32 min |
| Jul 15, 2:44 PM EDT | Special Marine Warning | PHI | 31 min | |
| Jul 15, 2:46 PM EDT | Areal Flood Advisory | PHI | Monmouth, Ocean | 3 hr |
| Jul 15, 3:14 PM EDT | Flash Flood Warning | PHI | Monmouth, Ocean | 7 hr |
| Jul 15, 3:23 PM EDT | Special Weather Statement | PHI | Monmouth | 67 min |
| Jul 15, 3:42 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland, Salem | 63 min |
| Jul 15, 3:44 PM EDT | Special Marine Warning | PHI | 91 min | |
| Jul 15, 4:19 PM EDT | Severe Thunderstorm Warning | PHI | Cumberland | 56 min |
| Jul 15, 4:27 PM EDT | Flash Flood Warning | PHI | Camden, Cumberland, Gloucester, Salem | 4 hr |
| Jul 15, 4:37 PM EDT | Special Weather Statement | PHI | Camden, Gloucester, Salem | 53 min |
| Jul 15, 4:53 PM EDT | Special Marine Warning | PHI | 67 min | |
| Jul 15, 5:05 PM EDT | Special Weather Statement | PHI | Burlington | 55 min |
| Jul 15, 5:11 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Morris, Somerset | 64 min |
| Jul 15, 5:14 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Monmouth, Ocean | 61 min |
| Jul 15, 5:43 PM EDT | Special Weather Statement | PHI | Ocean | 62 min |
| Jul 15, 5:45 PM EDT | Special Weather Statement | PHI | Atlantic | 60 min |
| Jul 15, 5:50 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Middlesex, Morris, Somerset | 4 hr |
| Jul 15, 5:57 PM EDT | Special Marine Warning | PHI | 63 min | |
| Jul 15, 6:00 PM EDT | Special Marine Warning | PHI | 60 min | |
| Jul 15, 6:03 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more | 4 hr |
| Jul 15, 6:05 PM EDT | Special Marine Warning | PHI | 115 min | |
| Jul 15, 6:11 PM EDT | Flash Flood Warning | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Morris, Ocean and 1 more | 4 hr |
| Jul 15, 6:11 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Monmouth, Ocean | 50 min |
| Jul 15, 6:12 PM EDT | Special Weather Statement | PHI | Morris | 63 min |
| Jul 15, 6:17 PM EDT | Special Weather Statement | PHI | Cape May | 58 min |
| Jul 15, 6:44 PM EDT | Flash Flood Warning | PHI | Atlantic, Burlington, Ocean | 4 hr |
| Jul 15, 7:20 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Mercer, Monmouth, Ocean | 4 hr |
| Jul 15, 7:32 PM EDT | Areal Flood Advisory | PHI | Chester, Montgomery | 6 hr |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2014Severe Thunderstorm Warnings in Pennsylvania, 2014Every severe thunderstorm warning in 2014
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.