Alert archive / New Jersey / Severe Thunderstorm Warnings in 2019
Severe Thunderstorm Warning 241, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 21, 2019, 7:23 PM EDT for Middlesex County, Monmouth County, Somerset County, New Jersey. It was in force for 52 min. 14 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 21, 2019, 7:23 PM EDT (23:23 UTC)
- Expired
- Jul 21, 2019, 8:15 PM EDT
- In force
- 52 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 70.0 mph
Counties Middlesex County, NJ, Monmouth County, NJ, Somerset County, NJ
The radar
The Philadelphia radar (KDIX), 61 km from the middle of the area, began a volume at 23:23 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 21, 7:23 PM EDT | TSTM WND DMG | 1 E Bridgewater, NJ | POLES AND WIRES DOWN ON NORTH BRIDGE ST. TIME ESTIMATED FROM RADAR. |
| Jul 21, 7:27 PM EDT | TSTM WND DMG | South Bound Brook, NJ | REPORTS OF LARGE TREES AND POWER LINES DOWN NEAR CHARLOTTE AVENUE AND MAPLE AVENUE. TIME ESTIMATED FROM RADAR AND NEARBY REPORTS. |
| Jul 21, 7:28 PM EDT | HAIL 0.75 | 1 S South Bound Brook, NJ | |
| Jul 21, 7:29 PM EDT | TSTM WND DMG | 2 Nne Manville, NJ | SEVERAL DOWNED TREES AND WIRES ON FOOTHILL ROAD NEAR ASCOT LANE AND JAMESTOWN ROAD. TIME ESTIMATED FROM RADAR. |
| Jul 21, 7:30 PM EDT | TSTM WND DMG | 2 Nne Manville, NJ | WIRES DOWN AND BURNING ON FOOTHILL RD. |
| Jul 21, 7:31 PM EDT | TSTM WND DMG | 1 Wnw Bound Brook, NJ | DOWNED TREE ON STATE HIGHWAY 28 BETWEEN VOSSELLER AVENUE AND MOUNTAIN AVENUE. ALL LANES CLOSED. TIME ESTIMATED FROM RADAR. |
| Jul 21, 7:32 PM EDT | HAIL 0.25 | Bound Brook, NJ | MPING REPORT. |
| Jul 21, 7:32 PM EDT | HAIL 0.5 | 1 W Bound Brook, NJ | MPING REPORT. |
| Jul 21, 7:33 PM EDT | TSTM WND DMG | 1 Wnw Bound Brook, NJ | TREE DOWN ON A HOUSE ON WASHINGTON STREET. TIME ESTIMATED FROM RADAR. |
| Jul 21, 7:35 PM EDT | HAIL 0.25 | Middlesex, NJ | SOCIAL MEDIA PHOTO OF PEA SIZE HAIL ON A DECK. TIME ESTIMATED FROM RADAR. |
| Jul 21, 7:36 PM EDT | TSTM WND DMG | Bound Brook, NJ | DOWNED TREE AND WIRES AT A RESIDENCE ON HAMILTON STREET. TIME ESTIMATED FROM RADAR. |
| Jul 21, 7:41 PM EDT | TSTM WND DMG | Somerset, NJ | SEVERAL REPORTS OF DOWNED TREES AND WIRES IN SOMERSET. TIME ESTIMATED FROM RADAR. |
| Jul 21, 7:43 PM EDT | TSTM WND DMG | 1 Nw New Brunswick, NJ | SEVERAL DOWNED TREES ON COLLEGE AVENUE CAMPUS AND IN SURROUNDING AREAS. TIME ESTIMATED FROM RADAR. |
| Jul 21, 7:45 PM EDT | TSTM WND DMG | 1 W New Brunswick, NJ | CRANE COLLAPSE LIKELY DUE TO THUNDERSTORM WINDS AT 141 HAMILTON ST. TIME ESTIMATED FROM RADAR. |
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, 11.4 hours before the alert went out and 133 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
- 751 J/kg
- Mixed-layer CIN
- -122 J/kg
- Mixed-layer LCL
- 1554 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 136 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 9.9
The text
As transmitted.
760
WUUS51 KPHI 212323
SVRPHI
NJC023-025-035-220015-
/O.NEW.KPHI.SV.W.0241.190721T2323Z-190722T0015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
723 PM EDT Sun Jul 21 2019
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Central Somerset County in northern New Jersey...
Central Monmouth County in central New Jersey...
Middlesex County in northern New Jersey...
* Until 815 PM EDT.
* At 722 PM EDT, a severe thunderstorm was located over Bound Brook,
or near Somerville, moving southeast at 30 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
* Locations impacted include...
New Brunswick, Perth Amboy, Somerville, Somerset, Edison,
Middletown, Old Bridge, East Brunswick, Bridgewater, South
Brunswick, Sayreville, North Brunswick, Marlboro, Manalapan,
Carteret, Holmdel, Middlesex, Bound Brook, Manville and Matawan.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Wind damage with this storm will occur before any rain or lightning.
Do not wait for the sound of thunder before taking cover. SEEK
SHELTER IMMEDIATELY inside a sturdy structure and stay away from
windows.
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 4017 7439 4017 7441 4056 7474 4059 7471
4067 7453 4065 7452 4067 7448 4066 7440
4060 7446 4060 7421 4056 7421 4055 7425
4050 7426 4050 7428 4047 7427 4044 7420
4046 7418 4043 7407
TIME...MOT...LOC 2322Z 311DEG 26KT 4055 7452
HAIL...1.00IN
WIND...70MPH
$$
Robertson3 follow-up statements
464
WWUS51 KPHI 212343
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
743 PM EDT Sun Jul 21 2019
NJC023-025-035-220015-
/O.CON.KPHI.SV.W.0241.000000T0000Z-190722T0015Z/
Somerset NJ-Monmouth NJ-Middlesex NJ-
743 PM EDT Sun Jul 21 2019
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR SOUTHEASTERN SOMERSET...CENTRAL MONMOUTH AND MIDDLESEX
COUNTIES...
At 742 PM EDT, a severe thunderstorm was located over New Brunswick,
moving southeast at 20 mph.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Expect considerable
tree damage. Wind damage is also likely to mobile homes,
roofs, and outbuildings.
Locations impacted include...
New Brunswick, Perth Amboy, Somerset, Edison, Middletown, Old Bridge,
East Brunswick, South Brunswick, Sayreville, North Brunswick,
Marlboro, Manalapan, Carteret, Holmdel, Middlesex, Matawan,
Jamesburg, Cranbury, Millstone and Brownville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Wind damage with this storm will occur before any rain or lightning.
Do not wait for the sound of thunder before taking cover. SEEK
SHELTER IMMEDIATELY inside a sturdy structure and stay away from
windows.
Continuous cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
&&
LAT...LON 4049 7462 4060 7445 4060 7421 4056 7421
4055 7425 4050 7426 4050 7428 4047 7427
4044 7420 4046 7418 4043 7407 4017 7439
4017 7441 4031 7453
TIME...MOT...LOC 2342Z 313DEG 19KT 4049 7444
HAIL...1.00IN
WIND...70MPH
$$
Robertson398
WWUS51 KPHI 212355
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
755 PM EDT Sun Jul 21 2019
NJC035-220005-
/O.CAN.KPHI.SV.W.0241.000000T0000Z-190722T0015Z/
Somerset NJ-
755 PM EDT Sun Jul 21 2019
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SOMERSET COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has weakened and
moved out of the warned area. Therefore, the warning has been
cancelled.
LAT...LON 4018 7438 4017 7441 4018 7442 4044 7452
4060 7436 4059 7429 4060 7425 4056 7421
4055 7425 4050 7426 4050 7428 4047 7427
4044 7420 4046 7418 4043 7407
TIME...MOT...LOC 2355Z 311DEG 26KT 4043 7434
$$
NJC023-025-220015-
/O.CON.KPHI.SV.W.0241.000000T0000Z-190722T0015Z/
Monmouth NJ-Middlesex NJ-
755 PM EDT Sun Jul 21 2019
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR CENTRAL MONMOUTH AND MIDDLESEX COUNTIES...
At 755 PM EDT, a severe thunderstorm was located over Old Bridge, or
near New Brunswick, moving southeast at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
New Brunswick, Perth Amboy, Somerset, Edison, Middletown, Old Bridge,
East Brunswick, Sayreville, North Brunswick, Marlboro, Manalapan,
Holmdel, Matawan, Jamesburg, Colonia, Brownville, Robertsville, North
Brunswick Township, Clearbrook Park and Yorketown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Wind damage with this storm will occur before any rain or lightning.
Do not wait for the sound of thunder before taking cover. SEEK
SHELTER IMMEDIATELY inside a sturdy structure and stay away from
windows.
Frequent cloud to ground lightning is occurring with this storm.
Move indoors immediately. Lightning is one of nature's leading
killers. Remember, if you can hear thunder, you are close enough to
be struck by lightning.
&&
LAT...LON 4018 7438 4017 7441 4018 7442 4044 7452
4060 7436 4059 7429 4060 7425 4056 7421
4055 7425 4050 7426 4050 7428 4047 7427
4044 7420 4046 7418 4043 7407
TIME...MOT...LOC 2355Z 311DEG 26KT 4043 7434
HAIL...1.00IN
WIND...60MPH
$$
Robertson349
WWUS51 KPHI 220007
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
807 PM EDT Sun Jul 21 2019
NJC023-025-220016-
/O.EXP.KPHI.SV.W.0241.000000T0000Z-190722T0015Z/
Monmouth NJ-Middlesex NJ-
807 PM EDT Sun Jul 21 2019
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MONMOUTH AND MIDDLESEX
COUNTIES WILL EXPIRE AT 815 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.
LAT...LON 4018 7438 4017 7441 4018 7442 4044 7452
4060 7436 4059 7429 4060 7425 4056 7421
4055 7425 4050 7426 4050 7428 4047 7427
4044 7420 4046 7418 4043 7407
TIME...MOT...LOC 0006Z 311DEG 26KT 4039 7428
$$
RobertsonThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 3:15 AM EDT | Flash Flood Watch | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 10 more | 51 hr |
| Jul 21, 3:09 PM EDT | Heat Advisory | PHI | Burlington, Camden, Cape May, Cumberland, Gloucester, Mercer and 1 more | 27 hr |
| Jul 21, 5:04 PM EDT | Special Weather Statement | PHI | Sussex | 41 min |
| Jul 21, 5:34 PM EDT | Special Weather Statement | PHI | Sussex | 41 min |
| Jul 21, 6:14 PM EDT | Special Weather Statement | PHI | Morris, Sussex, Warren | 46 min |
| Jul 21, 6:16 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex | 44 min |
| Jul 21, 6:38 PM EDT | Special Weather Statement | PHI | Hunterdon, Somerset | 37 min |
| Jul 21, 6:49 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Middlesex, Morris, Somerset, Warren | 41 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2019Every severe thunderstorm warning in 2019
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.