Alert archive / New Jersey / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 130, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 6, 2021, 6:17 PM EDT for 4 counties in New Jersey. It was in force for 58 min. 4 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, 2021, 6:17 PM EDT (22:17 UTC)
- Expired
- Jul 6, 2021, 7:15 PM EDT
- In force
- 58 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Hunterdon County, NJ, Middlesex County, NJ, Monmouth County, NJ, Somerset County, NJ
The radar
The Philadelphia radar (KDIX), 65 km from the middle of the area, began a volume at 22:19 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, 6:18 PM EDT | TSTM WND DMG | 1 Nne Basking Ridge, NJ | REPORT FROM MPING: TREES UPROOTED OR SNAPPED; ROOF BLOWN OFF. TIME CORRECTED BASED ON RADAR. |
| Jul 6, 6:22 PM EDT | TSTM WND DMG | 2 Nne Basking Ridge, NJ | MPING REPORT OF TREES DOWN. |
| Jul 6, 7:00 PM EDT | TSTM WND DMG | Raritan, NJ | DAMAGE TO SEVEN PINE TREES. REPORT VIA SOCIAL MEDIA. |
| Jul 6, 7:00 PM EDT | NON-TSTM WND DMG | Raritan, NJ | DAMAGE TO SEVEN PINE TREES. REPORT VIA SOCIAL MEDIA. |
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, 1:32 PM EDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 10.3 hours before the alert went out and 128 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
- 230 J/kg
- Mixed-layer CIN
- -195 J/kg
- Mixed-layer LCL
- 1202 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 139 m²/s²
- 0-3 km storm-relative helicity
- 184 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
034
WUUS51 KPHI 062217
SVRPHI
NJC019-023-025-035-062315-
/O.NEW.KPHI.SV.W.0130.210706T2217Z-210706T2315Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
617 PM EDT Tue Jul 6 2021
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northeastern Hunterdon County in northwestern New Jersey...
Somerset County in northern New Jersey...
Northeastern Monmouth County in central New Jersey...
Middlesex County in northern New Jersey...
* Until 715 PM EDT.
* At 617 PM EDT, severe thunderstorms were located along a line
extending from Chatham to near Bridgewater, moving southeast at 35
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, Somerville, Somerset, Edison,
Middletown, Old Bridge, East Brunswick, Bridgewater, South
Brunswick, Sayreville, North Brunswick, Marlboro, Carteret,
Holmdel, Middlesex, Bound Brook, Manville, Matawan and Jamesburg.
This includes the following highways...
New Jersey Turnpike between exits 9 and 12.
Interstate 78 in New Jersey between mile markers 20 and 42.
Interstate 287 in New Jersey between mile markers 0 and 30.
Garden State Parkway between mile markers 112 and 133.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4027 7436 4048 7477 4071 7488 4076 7456
4070 7451 4065 7452 4067 7447 4066 7440
4060 7446 4059 7421 4056 7421 4055 7425
4050 7428 4046 7426 4041 7403 4045 7401
4046 7401 4048 7402 4047 7401 4040 7397
TIME...MOT...LOC 2217Z 303DEG 31KT 4073 7438 4064 7469
HAIL...1.00IN
WIND...60MPH
$$
Staarmann2 follow-up statements
117
WWUS51 KPHI 062255
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
655 PM EDT Tue Jul 6 2021
NJC019-023-025-035-062315-
/O.CON.KPHI.SV.W.0130.000000T0000Z-210706T2315Z/
Hunterdon NJ-Somerset NJ-Monmouth NJ-Middlesex NJ-
655 PM EDT Tue Jul 6 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR NORTHEASTERN HUNTERDON...SOMERSET...NORTHEASTERN MONMOUTH AND
MIDDLESEX COUNTIES...
At 655 PM EDT, severe thunderstorms were located along a line
extending from near Keansburg to near Sayreville to Cloverhill,
moving southeast at 35 mph. This line of storms has a history of
producing wind damage.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Public.
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, Carteret, Holmdel, Middlesex, Bound Brook,
Manville, Matawan and Jamesburg.
This includes the following highways...
New Jersey Turnpike between exits 9 and 12.
Interstate 78 in New Jersey between mile markers 20 and 42.
Interstate 287 in New Jersey between mile markers 0 and 30.
Garden State Parkway between mile markers 112 and 133.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and damaging winds. People outside
should seek shelter inside a well-built structure and away from
windows.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4027 7436 4048 7477 4071 7488 4076 7456
4070 7451 4065 7452 4067 7447 4066 7440
4060 7446 4059 7421 4056 7421 4055 7425
4050 7428 4046 7426 4041 7403 4045 7401
4046 7401 4048 7402 4047 7401 4040 7397
TIME...MOT...LOC 2255Z 309DEG 29KT 4049 7406 4047 7438 4051 7476
HAIL...1.00IN
WIND...70MPH
$$
Staarmann787
WWUS51 KPHI 062309
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
709 PM EDT Tue Jul 6 2021
NJC019-023-025-035-062315-
/O.CON.KPHI.SV.W.0130.000000T0000Z-210706T2315Z/
Hunterdon NJ-Somerset NJ-Monmouth NJ-Middlesex NJ-
709 PM EDT Tue Jul 6 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 715 PM EDT
FOR NORTHEASTERN HUNTERDON...SOMERSET...NORTHEASTERN MONMOUTH AND
MIDDLESEX COUNTIES...
At 708 PM EDT, severe thunderstorms were located along a line
extending from near Sandy Hook to Matawan to Belle Mead, moving
southeast at 35 mph. This storm has a history of producing wind
damage.
HAZARD...70 mph wind gusts and quarter size hail.
SOURCE...Public.
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, Carteret, Holmdel, Middlesex, Bound Brook,
Manville, Matawan and Jamesburg.
This includes the following highways...
New Jersey Turnpike between exits 9 and 12.
Interstate 78 in New Jersey between mile markers 20 and 42.
Interstate 287 in New Jersey between mile markers 0 and 27.
Garden State Parkway between mile markers 112 and 133.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Prepare immediately for large hail and damaging winds. People outside
should seek shelter inside a well-built structure and away from
windows.
Torrential rainfall is occurring with these storms, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4027 7436 4048 7477 4071 7488 4070 7451
4068 7453 4065 7452 4067 7447 4066 7440
4060 7446 4059 7421 4056 7421 4055 7425
4050 7428 4046 7426 4041 7403 4047 7401
4042 7402 4044 7399 4041 7400 4040 7397
TIME...MOT...LOC 2308Z 303DEG 31KT 4043 7394 4041 7426 4045 7464
HAIL...1.00IN
WIND...70MPH
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 6, 3:53 AM EDT | Small Craft Advisory | PHI | 22 hr | |
| Jul 6, 5:11 PM EDT | Severe Thunderstorm Warning | PHI | Burlington | 49 min |
| Jul 6, 5:15 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex, Warren | 60 min |
| Jul 6, 5:46 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset, Sussex, Warren | 59 min |
| Jul 6, 5:55 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Somerset, Warren | 65 min |
| Jul 6, 6:13 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden | 31 min |
| Jul 6, 6:33 PM EDT | Special Marine Warning | PHI | 117 min | |
| Jul 6, 6:41 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Somerset | 64 min |
| Jul 6, 7:01 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Hunterdon, Mercer, Middlesex, Monmouth, Ocean and 1 more | 59 min |
| Jul 6, 7:59 PM EDT | Severe Thunderstorm Warning | PHI | Mercer, Middlesex, Monmouth, Ocean, Somerset | 61 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2021Every severe thunderstorm warning in 2021
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.