Alert archive / New Jersey / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 23, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at May 31, 2015, 6:50 PM EDT for Middlesex County, Monmouth County, New Jersey. It was in force for 40 min. 1 report 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
- May 31, 2015, 6:50 PM EDT (22:50 UTC)
- Expired
- May 31, 2015, 7:30 PM EDT
- In force
- 40 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Middlesex County, NJ, Monmouth County, NJ
The radar
The Philadelphia radar (KDIX), 60 km from the middle of the area, began a volume at 22:53 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 |
|---|---|---|---|
| May 31, 6:55 PM EDT | HAIL 0.25 | Laurence Harbor, NJ | PEA SIZE HAIL REPORTED IN LAURENCE HARBOR. |
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, 10.8 hours before the alert went out and 122 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
- 106 J/kg
- Mixed-layer CIN
- -105 J/kg
- Mixed-layer LCL
- 746 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 41 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
011
WUUS51 KPHI 312250
SVRPHI
NJC023-025-312330-
/O.NEW.KPHI.SV.W.0023.150531T2250Z-150531T2330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
650 PM EDT SUN MAY 31 2015
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN MIDDLESEX COUNTY IN NORTHERN NEW JERSEY...
NORTHEASTERN MONMOUTH COUNTY IN CENTRAL NEW JERSEY...
* UNTIL 730 PM EDT
* AT 650 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING LARGE HAIL UP TO PING PONG BALL SIZE AND
DAMAGING WINDS TO 60 MPH. THIS STORM WAS LOCATED OVER MATAWAN...OR
NEAR PERTH AMBOY...AND MOVING EAST AT 20 MPH.
* LOCATIONS IMPACTED INCLUDE...
NEW BRUNSWICK...PERTH AMBOY...MIDDLETOWN...OLD BRIDGE...EAST
BRUNSWICK...SAYREVILLE...KEANSBURG...MATAWAN...BROWNVILLE...
ROBERTSVILLE...MORGANVILLE...WOODBRIDGE...SOUTH RIVER...KEYPORT...
LAURENCE HARBOR...SEWAREN...NORTH MIDDLETOWN...STRATHMORE...MADISON
PARK AND FORDS.
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.
TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
&&
LAT...LON 4032 7429 4048 7441 4058 7421 4056 7422
4055 7425 4050 7426 4050 7428 4046 7426
4044 7420 4046 7418 4045 7416 4045 7413
4043 7406 4044 7399
TIME...MOT...LOC 2250Z 253DEG 16KT 4044 7427
$$1 follow-up statement
846
WWUS51 KPHI 312311
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
711 PM EDT SUN MAY 31 2015
NJC023-025-312330-
/O.CON.KPHI.SV.W.0023.000000T0000Z-150531T2330Z/
MIDDLESEX NJ-MONMOUTH NJ-
711 PM EDT SUN MAY 31 2015
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 730 PM EDT
FOR NORTHEASTERN MIDDLESEX AND NORTHEASTERN MONMOUTH COUNTIES...
AT 710 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING LARGE HAIL UP TO PING PONG BALL SIZE AND DAMAGING WINDS
TO 60 MPH. THIS STORM WAS LOCATED OVER OLD BRIDGE...OR NEAR NEW
BRUNSWICK...MOVING EAST AT 15 MPH.
LOCATIONS IMPACTED INCLUDE...
NEW BRUNSWICK...PERTH AMBOY...MIDDLETOWN...OLD BRIDGE...EAST
BRUNSWICK...SAYREVILLE...KEANSBURG...MATAWAN...BROWNVILLE...
ROBERTSVILLE...MORGANVILLE...WOODBRIDGE...SOUTH RIVER...KEYPORT...
LAURENCE HARBOR...SEWAREN...NORTH MIDDLETOWN...STRATHMORE...MADISON
PARK AND FORDS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...DEADLY
LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.
TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND WILL
LEAD TO FLASH FLOODING IN MIDDLESEX COUNTY. NEVER DRIVE YOUR VEHICLE
THROUGH FLOODED ROADWAYS.
&&
LAT...LON 4032 7429 4048 7441 4058 7421 4056 7422
4055 7425 4050 7426 4050 7428 4046 7426
4044 7420 4045 7419 4045 7413 4043 7406
4044 7399
TIME...MOT...LOC 2310Z 252DEG 12KT 4043 7433
$$The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 31, 1:00 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 45 min |
| May 31, 1:11 PM EDT | Flash Flood Watch | PHI | Hunterdon, Middlesex, Morris, Somerset, Sussex, Warren | 13 hr |
| May 31, 1:24 PM EDT | Special Weather Statement | PHI | Monmouth | 36 min |
| May 31, 2:00 PM EDT | Special Weather Statement | PHI | Monmouth | 45 min |
| May 31, 4:33 PM EDT | Severe Thunderstorm Warning | PHI | Warren | 42 min |
| May 31, 5:57 PM EDT | Small Craft Advisory | PHI | 6 hr | |
| May 31, 6:11 PM EDT | Areal Flood Advisory | PHI | Middlesex, Somerset | 3 hr |
| May 31, 6:37 PM EDT | Flash Flood Warning | PHI | Middlesex | 5 hr |
| May 31, 7:57 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Morris, Somerset, Sussex, Warren | 6 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.