Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 120, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 6, 2020, 3:18 PM EDT for Middlesex County, Somerset County, New Jersey. It was in force for 42 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 6, 2020, 3:18 PM EDT (19:18 UTC)
- Expired
- Jul 6, 2020, 4:00 PM EDT
- In force
- 42 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Middlesex County, NJ, Somerset County, NJ
The radar
The Philadelphia radar (KDIX), 69 km from the middle of the area, began a volume at 19:18 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 6, 3:20 PM EDT | HAIL 1 | 1 Ssw South Plainfield, NJ | |
| Jul 6, 3:20 PM EDT | HAIL 1 | 1 W Perth Amboy, NJ | |
| Jul 6, 3:24 PM EDT | HAIL 1 | Metuchen, NJ | REPORT VIA SOCIAL MEDIA WITH VIDEO OF HAIL UP TO ABOUT QUARTER SIZE. SOME SMALL DENTS ON VEHICLES REPORTED. TIME ESTIMATED FROM RADAR. |
| Jul 6, 3:25 PM EDT | HAIL 1.5 | Edison, NJ | QUARTER TO PING PONG BALL SIZE HAIL. |
| Jul 6, 3:28 PM EDT | TSTM WND DMG | 1 Wsw Colonia, NJ | TREE DOWN ON WIRES NEAR ELLIS PARKWAY IN COLONIA. TIME ESTIMATED FROM RADAR. |
| Jul 6, 3:30 PM EDT | HAIL 1 | Woodbridge, NJ | NICKEL TO QUARTER SIZE HAIL. |
| Jul 6, 3:40 PM EDT | HAIL 0.5 | Woodbridge, 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 6, 1:38 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 7.3 hours before the alert went out and 129 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
- 100 J/kg
- Mixed-layer CIN
- -192 J/kg
- Mixed-layer LCL
- 1959 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
898
WUUS51 KPHI 061918
SVRPHI
NJC023-035-062000-
/O.NEW.KPHI.SV.W.0120.200706T1918Z-200706T2000Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
318 PM EDT Mon Jul 6 2020
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southeastern Somerset County in northern New Jersey...
Northeastern Middlesex County in northern New Jersey...
* Until 400 PM EDT.
* At 318 PM EDT, a severe thunderstorm was located over Edison, or
near Perth Amboy, moving northeast at 20 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to
roofs, siding, trees, and power lines is possible.
* Locations impacted include...
New Brunswick, Perth Amboy, Somerset, Edison, Old Bridge, East
Brunswick, Sayreville, North Brunswick, Carteret, Middlesex, Bound
Brook, Colonia, North Brunswick Township, Society Hill, Woodbridge,
South Plainfield, North Plainfield, South River, Highland Park and
Metuchen.
This includes the following highways...
New Jersey Turnpike between exits 10 and 13.
Interstate 78 in New Jersey between mile markers 39 and 42.
Interstate 287 in New Jersey between mile markers 0 and 12.
Garden State Parkway between mile markers 123 and 134.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 4056 7421 4055 7425 4050 7426 4050 7428
4046 7426 4041 7437 4047 7459 4067 7448
4066 7445 4066 7440 4063 7442 4060 7446
4061 7435 4059 7428 4060 7421
TIME...MOT...LOC 1918Z 225DEG 18KT 4056 7435
HAIL...1.00IN
WIND...60MPH
$$
Gorse2 follow-up statements
210
WWUS51 KPHI 061932
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
332 PM EDT Mon Jul 6 2020
NJC035-061942-
/O.CAN.KPHI.SV.W.0120.000000T0000Z-200706T2000Z/
Somerset NJ-
332 PM EDT Mon Jul 6 2020
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SOMERSET COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has remained east
of this warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
northern New Jersey.
LAT...LON 4056 7421 4055 7425 4050 7426 4050 7428
4046 7426 4041 7437 4051 7444 4060 7446
4061 7435 4059 7428 4060 7421
TIME...MOT...LOC 1932Z 241DEG 15KT 4057 7428
$$
NJC023-062000-
/O.CON.KPHI.SV.W.0120.000000T0000Z-200706T2000Z/
Middlesex NJ-
332 PM EDT Mon Jul 6 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 400 PM EDT
FOR NORTHEASTERN MIDDLESEX COUNTY...
At 332 PM EDT, a severe thunderstorm was located over Colonia, or
near Perth Amboy, moving northeast at 15 mph.
HAZARD...60 mph wind gusts and half dollar size hail.
SOURCE...Trained weather spotters.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
New Brunswick, Perth Amboy, Edison, Old Bridge, East Brunswick,
Sayreville, Carteret, Colonia, Society Hill, Woodbridge, South
Plainfield, South River, Highland Park, Metuchen, Madison Park,
Iselin, Sewaren, Port Reading, Fords and Avenel.
This includes the following highways...
New Jersey Turnpike between exits 10 and 13.
Interstate 287 in New Jersey between mile markers 0 and 6.
Garden State Parkway between mile markers 123 and 134.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Frequent cloud to ground lightning is occurring with this storm. Move
indoors immediately. Lightning is one of nature's leading killers.
Remember, if you can hear thunder, you are close enough to be struck
by lightning.
&&
LAT...LON 4056 7421 4055 7425 4050 7426 4050 7428
4046 7426 4041 7437 4051 7444 4060 7446
4061 7435 4059 7428 4060 7421
TIME...MOT...LOC 1932Z 241DEG 15KT 4057 7428
HAIL...1.25IN
WIND...60MPH
$$
Gorse541
WWUS51 KPHI 061951
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
351 PM EDT Mon Jul 6 2020
NJC023-062001-
/O.EXP.KPHI.SV.W.0120.000000T0000Z-200706T2000Z/
Middlesex NJ-
351 PM EDT Mon Jul 6 2020
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MIDDLESEX COUNTY
WILL EXPIRE AT 400 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds are still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 1100 PM EDT for
northern New Jersey.
LAT...LON 4056 7421 4055 7425 4050 7426 4050 7428
4046 7426 4041 7437 4051 7444 4060 7446
4061 7435 4059 7428 4060 7421
TIME...MOT...LOC 1951Z 225DEG 18KT 4063 7420
$$
GorseThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 3:16 AM EDT | Heat Advisory | PHI | Burlington, Camden, Gloucester, Mercer | 12 hr |
| Jul 6, 12:45 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden | 60 min |
| Jul 6, 12:52 PM EDT | Flash Flood Watch | PHI | Burlington, Camden, Gloucester, Mercer, Salem | 8 hr |
| Jul 6, 12:57 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden | 2 hr |
| Jul 6, 1:08 PM EDT | Flash Flood Warning | PHI | Burlington, Camden | 4 hr |
| Jul 6, 1:15 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Monmouth | 60 min |
| Jul 6, 1:43 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden | 62 min |
| Jul 6, 1:52 PM EDT | Special Weather Statement | PHI | Ocean | 23 min |
| Jul 6, 2:00 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Middlesex, Monmouth, Ocean | 75 min |
| Jul 6, 2:02 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Mercer, Middlesex, Monmouth, Ocean | 118 min |
| Jul 6, 2:39 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Gloucester, Ocean | 66 min |
| Jul 6, 2:41 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer | 49 min |
| Jul 6, 2:46 PM EDT | Special Marine Warning | PHI | 89 min | |
| Jul 6, 2:48 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Camden, Gloucester, Ocean | 4 hr |
| Jul 6, 2:51 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Monmouth | 39 min |
| Jul 6, 2:57 PM EDT | Flash Flood Warning | PHI | Burlington, Camden, Gloucester | 4 hr |
| Jul 6, 3:00 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 45 min |
| Jul 6, 3:14 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 46 min |
| Jul 6, 3:34 PM EDT | Areal Flood Advisory | PHI | Middlesex, Monmouth, Somerset | 116 min |
| Jul 6, 3:36 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Ocean | 54 min |
| Jul 6, 3:36 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset | 39 min |
| Jul 6, 3:38 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 52 min |
| Jul 6, 3:44 PM EDT | Special Marine Warning | PHI | 61 min | |
| Jul 6, 3:44 PM EDT | Special Marine Warning | PHI | 61 min | |
| Jul 6, 3:47 PM EDT | Flash Flood Warning | PHI | Middlesex, Morris, Somerset | 4 hr |
| Jul 6, 3:47 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Camden, Cumberland, Gloucester, Salem | 58 min |
| Jul 6, 4:41 PM EDT | Special Marine Warning | PHI | 64 min | |
| Jul 6, 4:45 PM EDT | Special Marine Warning | PHI | 41 min | |
| Jul 6, 4:45 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland, Salem | 60 min |
| Jul 6, 4:58 PM EDT | Special Marine Warning | PHI | 62 min | |
| Jul 6, 5:24 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 2 more | 4 hr |
| Jul 6, 5:39 PM EDT | Special Marine Warning | PHI | 66 min | |
| Jul 6, 5:43 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland | 47 min |
| Jul 6, 5:57 PM EDT | Special Marine Warning | PHI | 63 min | |
| Jul 6, 6:00 PM EDT | Severe Thunderstorm Warning | PHI | Salem | 60 min |
| Jul 6, 6:43 PM EDT | Special Marine Warning | PHI | 44 min | |
| Jul 6, 6:56 PM EDT | Special Marine Warning | PHI | 47 min | |
| Jul 6, 7:18 PM EDT | Severe Thunderstorm Warning | PHI | Sussex, Warren | 36 min |
| Jul 6, 7:55 PM EDT | Special Weather Statement | PHI | Sussex | 50 min |
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.