Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 192, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 31, 2020, 1:10 AM EDT for 4 counties in New Jersey. It was in force for 35 min. 3 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 31, 2020, 1:10 AM EDT (05:10 UTC)
- Expired
- Jul 31, 2020, 1:45 AM EDT
- In force
- 35 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 70.0 mph
Counties Middlesex County, NJ, Monmouth County, NJ, Morris County, NJ, Somerset County, NJ
The radar
The Philadelphia radar (KDIX), 65 km from the middle of the area, began a volume at 05:12 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 31, 1:22 AM EDT | TSTM WND DMG | 1 Se Iselin, NJ | DOWNED WIRES ON WOODBRIDGE CENTER DRIVE. TIME ESTIMATED FROM RADAR. |
| Jul 31, 1:23 AM EDT | TSTM WND DMG | Woodbridge, NJ | SEVERAL REPORTS OF DOWNED POWER LINES BETWEEN FORDS AND COLONIA. TIME ESTIMATED FROM RADAR. |
| Jul 31, 1:30 AM EDT | TSTM WND GST 67 | Port Reading, NJ |
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 00:00Z, 5.2 hours before the alert went out and 121 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
- 2515 J/kg
- Mixed-layer CIN
- -27 J/kg
- Mixed-layer LCL
- 895 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 79 m²/s²
- 0-3 km storm-relative helicity
- 102 m²/s²
- Significant tornado parameter
- 0.8
- Supercell composite
- 4.9
The text
As transmitted.
997
WUUS51 KPHI 310510
SVRPHI
NJC023-025-027-035-310545-
/O.NEW.KPHI.SV.W.0192.200731T0510Z-200731T0545Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
110 AM EDT Fri Jul 31 2020
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
South central Morris County in northern New Jersey...
Central Somerset County in northern New Jersey...
Northeastern Monmouth County in central New Jersey...
Northeastern Middlesex County in northern New Jersey...
* Until 145 AM EDT.
* At 110 AM EDT, a severe thunderstorm was located over Huguenot,
moving northeast at 25 mph.
HAZARD...70 mph wind gusts.
SOURCE...Trained weather spotters. A trained spotter in Keyport
reported a measured wind gust of 70 mph.
IMPACT...Expect considerable tree damage. Damage is likely to
mobile homes, roofs, and outbuildings.
* Locations impacted include...
New Brunswick, Perth Amboy, Long Branch, Somerville, Sandy Hook,
Somerset, Edison, Middletown, Old Bridge, East Brunswick,
Sayreville, North Brunswick, Carteret, Tinton Falls, Holmdel,
Madison, Middlesex, Red Bank, Bound Brook and Manville.
This includes the following highways...
New Jersey Turnpike between exits 10 and 13.
Interstate 78 in New Jersey between mile markers 36 and 42.
Interstate 287 in New Jersey between mile markers 0 and 17.
Garden State Parkway between mile markers 109 and 134.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4027 7397 4053 7472 4075 7442 4073 7438
4067 7446 4065 7440 4060 7446 4060 7421
4056 7421 4055 7425 4050 7428 4044 7420
4046 7418 4045 7413 4041 7399 4048 7402
4047 7400 4043 7397
TIME...MOT...LOC 0510Z 216DEG 24KT 4056 7419
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...70MPH
$$
JEO2 follow-up statements
974
WWUS51 KPHI 310527
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
127 AM EDT Fri Jul 31 2020
NJC025-310536-
/O.CAN.KPHI.SV.W.0192.000000T0000Z-200731T0545Z/
Monmouth NJ-
127 AM EDT Fri Jul 31 2020
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MONMOUTH COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4045 7431 4053 7459 4075 7442 4073 7438
4067 7446 4065 7441 4060 7446 4060 7421
4056 7421 4055 7425 4050 7428 4047 7427
TIME...MOT...LOC 0526Z 216DEG 24KT 4065 7410
$$
NJC023-027-035-310545-
/O.CON.KPHI.SV.W.0192.000000T0000Z-200731T0545Z/
Morris NJ-Somerset NJ-Middlesex NJ-
127 AM EDT Fri Jul 31 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 145 AM EDT
FOR SOUTHEASTERN MORRIS...EAST CENTRAL SOMERSET AND NORTHEASTERN
MIDDLESEX COUNTIES...
At 126 AM EDT, a severe thunderstorm was located over Bayonne, moving
northeast at 30 mph.
HAZARD...70 mph wind gusts.
SOURCE...Trained weather spotters. A 70 mph wind gust was
previously reported by a trained spotter in Keyport.
IMPACT...Expect considerable tree damage. Damage is likely to mobile
homes, roofs, and outbuildings.
Locations impacted include...
New Brunswick, Perth Amboy, Somerset, Edison, East Brunswick,
Sayreville, Carteret, Madison, Middlesex, Bound Brook, Manville,
Colonia, Society Hill, Woodbridge, South Plainfield, North
Plainfield, Highland Park, Metuchen, Dunellen and Watchung.
This includes the following highways...
New Jersey Turnpike between exits 11 and 13.
Interstate 78 in New Jersey between mile markers 39 and 42.
Interstate 287 in New Jersey between mile markers 0 and 13.
Garden State Parkway between mile markers 124 and 134.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4045 7431 4053 7459 4075 7442 4073 7438
4067 7446 4065 7441 4060 7446 4060 7421
4056 7421 4055 7425 4050 7428 4047 7427
TIME...MOT...LOC 0526Z 216DEG 24KT 4065 7410
TORNADO...POSSIBLE
HAIL...<.75IN
WIND...70MPH
$$
JEO042
WWUS51 KPHI 310538
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
138 AM EDT Fri Jul 31 2020
NJC023-027-035-310548-
/O.EXP.KPHI.SV.W.0192.000000T0000Z-200731T0545Z/
Morris NJ-Somerset NJ-Middlesex NJ-
138 AM EDT Fri Jul 31 2020
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MORRIS...EAST
CENTRAL SOMERSET AND NORTHEASTERN MIDDLESEX COUNTIES WILL EXPIRE AT
145 AM EDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
LAT...LON 4045 7431 4053 7459 4075 7442 4073 7438
4067 7446 4065 7441 4060 7446 4060 7421
4056 7421 4055 7425 4050 7428 4047 7427
TIME...MOT...LOC 0538Z 216DEG 24KT 4071 7404
$$
JEOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 30, 10:15 PM EDT | Special Marine Warning | PHI | 60 min | |
| Jul 30, 10:36 PM EDT | Special Weather Statement | PHI | Atlantic, Camden, Cumberland, Gloucester, Salem | 39 min |
| Jul 30, 11:06 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Salem | 39 min |
| Jul 30, 11:35 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Mercer, Monmouth, Ocean | 40 min |
| Jul 30, 11:40 PM EDT | Special Weather Statement | PHI | Hunterdon | 50 min |
| Jul 30, 11:51 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Somerset, Warren | 54 min |
| Jul 31, 12:10 AM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Middlesex, Monmouth, Ocean, Somerset | 50 min |
| Jul 31, 12:21 AM EDT | Areal Flood Advisory | PHI | Hunterdon, Mercer | 4 hr |
| Jul 31, 12:33 AM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Morris, Ocean and 1 more | 42 min |
| Jul 31, 12:54 AM EDT | Areal Flood Advisory | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Somerset | 4 hr |
| Jul 31, 1:29 AM EDT | Flash Flood Warning | PHI | Middlesex, Somerset | 4 hr |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2020Every severe thunderstorm warning in 2020
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.