Alert archive / New Jersey / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 112, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 21, 2015, 1:02 AM EDT for 5 counties in New Jersey. It was in force for 37 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
- Aug 21, 2015, 1:02 AM EDT (05:02 UTC)
- Expired
- Aug 21, 2015, 1:39 AM EDT
- In force
- 37 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Burlington County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ
The radar
The Philadelphia radar (KDIX), 31 km from the middle of the area, began a volume at 05:03 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
Brookhaven, NY (KOKX), launched 00:00Z, 5.0 hours before the alert went out and 151 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
- 178 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 657 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 72 m²/s²
- 0-3 km storm-relative helicity
- 121 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
834 WUUS51 KPHI 210502 SVRPHI NJC005-021-023-025-029-210600- /O.NEW.KPHI.SV.W.0112.150821T0502Z-150821T0600Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 102 AM EDT FRI AUG 21 2015 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN MERCER COUNTY IN CENTRAL NEW JERSEY... CENTRAL MONMOUTH COUNTY IN CENTRAL NEW JERSEY... SOUTHEASTERN MIDDLESEX COUNTY IN NORTHERN NEW JERSEY... NORTH CENTRAL OCEAN COUNTY IN SOUTHERN NEW JERSEY... NORTH CENTRAL BURLINGTON COUNTY IN SOUTHERN NEW JERSEY... * UNTIL 200 AM EDT * AT 101 AM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED OVER ALLENTOWN...OR 8 MILES EAST OF TRENTON...AND MOVING EAST AT 25 MPH. * LOCATIONS IMPACTED INCLUDE... OLD BRIDGE...HOWELL...MARLBORO...MANALAPAN...TINTON FALLS... HOLMDEL...MATAWAN...JAMESBURG...HIGHTSTOWN...CRANBURY... ALLENTOWN...FARMINGDALE...ROOSEVELT...TWIN RIVERS...CLARKSBURG... YORKETOWN...COLLINGWOOD PARK...IMLAYSTOWN...EAST FREEHOLD AND VISTA CENTER. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. DOPPLER RADAR HAS INDICATED SOME WEAK ROTATION WITHIN THIS STORM. ALTHOUGH A TORNADO IS NOT IMMEDIATELY LIKELY...IF ONE IS SPOTTED... ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE... SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. && LAT...LON 4013 7464 4026 7469 4043 7417 4016 7408 TIME...MOT...LOC 0501Z 255DEG 22KT 4021 7459 $$ HEAVENER
1 follow-up statement
689
WWUS51 KPHI 210539
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
139 AM EDT FRI AUG 21 2015
NJC005-021-023-025-029-210549-
/O.CAN.KPHI.SV.W.0112.000000T0000Z-150821T0600Z/
MERCER NJ-MONMOUTH NJ-MIDDLESEX NJ-OCEAN NJ-BURLINGTON NJ-
139 AM EDT FRI AUG 21 2015
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MERCER...CENTRAL
MONMOUTH...SOUTHEASTERN MIDDLESEX...NORTH CENTRAL OCEAN AND NORTH
CENTRAL BURLINGTON COUNTIES IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN CANCELLED. HOWEVER HEAVY RAIN IS STILL
POSSIBLE WITH THIS THUNDERSTORM.
LAT...LON 4013 7464 4026 7469 4043 7417 4016 7408
TIME...MOT...LOC 0537Z 255DEG 22KT 4032 7406
$$
HEAVENERThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 20, 11:18 PM EDT | Special Weather Statement | PHI | Hunterdon, Mercer | 57 min |
| Aug 20, 11:35 PM EDT | Areal Flood Advisory | PHI | Burlington, Hunterdon, Mercer, Middlesex, Somerset | 4 hr |
| Aug 21, 12:46 AM EDT | Flash Flood Warning | PHI | Burlington, Mercer, Middlesex, Monmouth, Somerset | 4 hr |
| Aug 21, 12:51 AM EDT | Special Weather Statement | PHI | Mercer | 39 min |
| Aug 21, 1:38 AM EDT | Areal Flood Advisory | PHI | Atlantic, Cape May, Cumberland, Gloucester, Salem | 4 hr |
| Aug 21, 2:30 AM EDT | Areal Flood Advisory | PHI | Sussex | 4 hr |
| Aug 21, 3:10 AM EDT | Flash Flood Warning | PHI | Cape May | 4 hr |
| Aug 21, 4:31 AM EDT | Areal Flood Advisory | PHI | Middlesex, Monmouth, Ocean | 4 hr |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2015Every severe thunderstorm warning in 2015
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.