Alert archive / New Jersey / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 4, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Mar 28, 2021, 7:17 PM EDT for 5 counties in New Jersey. It was in force for 60 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
- Mar 28, 2021, 7:17 PM EDT (23:17 UTC)
- Expired
- Mar 28, 2021, 8:17 PM EDT
- In force
- 60 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Ocean County, NJ, Somerset County, NJ
The radar
The Philadelphia radar (KDIX), 53 km from the middle of the area, began a volume at 23:19 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 |
|---|---|---|---|
| Mar 28, 7:19 PM EDT | TSTM WND DMG | 1 Ene West Windsor Twp., NJ | DOWNED TREE LIMBS AND WIRES NEAR CLARKSVILLE ROAD AND PENN LYLE ROAD. TIME ESTIMATED FROM RADAR. |
| Mar 28, 7:27 PM EDT | TSTM WND DMG | 1 Wnw East Brunswick, NJ | DOWNED TREE LIMBS AND WIRES NEAR DUNHAMS CORNER ROAD. TIME ESTIMATED FROM RADAR. |
| Mar 28, 7:27 PM EDT | TSTM WND DMG | 2 Ne Allentown, NJ | TREE AND WIRES DOWN ON OLD YORK RD. ROAD CLOSED BETWEEN PERRINEVILE RD AND SHARON RD. TIME ESTIMATED FROM RADAR. |
| Mar 28, 7:33 PM EDT | TSTM WND DMG | 2 Sse South River, NJ | DOWNED TREE LIMBS AND WIRES NEAR DONALD ROAD. TIME ESTIMATED FROM RADAR. |
| Mar 28, 7:36 PM EDT | TSTM WND DMG | 2 Ese Clarksburg, NJ | DOWNED TREES AND WIRES ON CARRS TAVERN ROAD. TIME ESTIMATED FROM RADAR. |
| Mar 28, 7:37 PM EDT | TSTM WND DMG | 1 Se Parlin, NJ | DOWNED UTILITY POLE ON U.S. HIGHWAY 9 NEAR ERNSTON ROAD. TIME ESTIMATED FROM RADAR. |
| Mar 28, 7:38 PM EDT | TSTM WND DMG | Matawan, NJ | SOME LARGE TREES DOWN IN MATAWAN. TIME ESTIMATED FROM RADAR. |
| Mar 28, 7:40 PM EDT | TSTM WND DMG | 1 W Matawan, NJ | DOWNED TREES AND WIRES NEAR OLD BRIDGE MATAWAN ROAD. TIME ESTIMATED FROM RADAR. |
| Mar 28, 7:42 PM EDT | TSTM WND DMG | Marlboro, NJ | NUMEROUS TREES DOWN IN MARLBORO. TIME ESTIMATED FROM RADAR. |
| Mar 28, 7:46 PM EDT | TSTM WND DMG | 1 Nnw Hazlet, NJ | DOWNED TREE AND WIRES ON STATE HIGHWAY 36 NEAR MIDDLE ROAD IN HAZLET TWP. TIME ESTIMATED FROM RADAR. |
| Mar 28, 7:52 PM EDT | TSTM WND DMG | 1 Ssw Tinton Falls, NJ | DOWNED TREES AND WIRES NEAR SQUANKUM ROAD. TIME ESTIMATED FROM RADAR. |
| Mar 28, 7:54 PM EDT | TSTM WND DMG | Atlantic Highlands, NJ | SEVERAL REPORTS OF DOWNED TREE LIMBS AND POWER LINES IN THE ATLANTIC HIGHLANDS AREA. TIME ESTIMATED FROM RADAR. |
| Mar 28, 7:56 PM EDT | TSTM WND DMG | 1 Wsw Oakhurst, NJ | DOWNED TREES AND WIRES NEAR LINCOLN AVENUE. TIME ESTIMATED FROM RADAR. |
| Mar 28, 8:00 PM EDT | TSTM WND DMG | Neptune Twp, NJ | DAMAGE REPORTED ON NEW YORK RD. DOWNED ROAD SIGNS AND A POSSIBLE PARTIAL ROOF COLLAPSE. TIME ESTIMATED FROM RADAR. |
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 |
|---|---|---|---|
| Mar 28, 5:05 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 11.3 hours before the alert went out and 131 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 666 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 165 m²/s²
- 0-3 km storm-relative helicity
- 285 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
858
WUUS51 KPHI 282317
SVRPHI
NJC021-023-025-029-035-290030-
/O.NEW.KPHI.SV.W.0004.210328T2317Z-210329T0030Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
717 PM EDT Sun Mar 28 2021
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northeastern Ocean County in southern New Jersey...
Mercer County in central New Jersey...
Southeastern Somerset County in northern New Jersey...
Monmouth County in central New Jersey...
Middlesex County in northern New Jersey...
* Until 830 PM EDT.
* At 716 PM EDT, severe thunderstorms were located along a line
extending from Morristown to Millstone to Trenton, moving east at
45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Trenton, New Brunswick, Perth Amboy, Long Branch, Asbury Park,
Somerville, Sandy Hook, Somerset, Edison, Lakewood, Middletown, Old
Bridge, Howell, East Brunswick, South Brunswick, Sayreville, North
Brunswick, Marlboro, Manalapan and Ewing.
This includes the following highways...
New Jersey Turnpike between exits 8 and 12.
Interstate 78 in New Jersey between mile markers 38 and 42.
Interstate 195 in New Jersey between mile markers 0 and 34.
Interstate 295 in New Jersey between mile markers 59 and 71.
Interstate 287 in New Jersey between mile markers 0 and 16.
Garden State Parkway between mile markers 93 and 133.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of
a building. This severe thunderstorm may contain little or no
lightning. Do not wait until you hear thunder before taking cover.
&&
LAT...LON 4021 7397 4008 7403 4015 7463 4018 7469
4016 7472 4023 7481 4063 7458 4067 7446
4065 7440 4060 7446 4059 7420 4056 7421
4055 7425 4050 7426 4050 7428 4046 7426
4041 7398 4048 7402 4048 7401 4043 7397
TIME...MOT...LOC 2316Z 267DEG 38KT 4077 7447 4051 7462 4022 7475
HAIL...<.75IN
WIND...60MPH
$$
Staarmann3 follow-up statements
869
WWUS51 KPHI 282335
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
735 PM EDT Sun Mar 28 2021
NJC035-282344-
/O.CAN.KPHI.SV.W.0004.000000T0000Z-210329T0030Z/
Somerset NJ-
735 PM EDT Sun Mar 28 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN SOMERSET COUNTY
IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
central and southern New Jersey.
LAT...LON 4008 7403 4016 7465 4037 7446 4060 7440
4059 7421 4056 7421 4055 7425 4050 7426
4050 7428 4046 7426 4041 7401 4044 7399
4048 7402 4048 7401 4046 7400 4044 7398
4043 7399 4042 7398 4021 7397
TIME...MOT...LOC 2334Z 271DEG 43KT 4057 7431 4023 7442
$$
NJC021-023-025-029-290030-
/O.CON.KPHI.SV.W.0004.000000T0000Z-210329T0030Z/
Ocean NJ-Mercer NJ-Monmouth NJ-Middlesex NJ-
735 PM EDT Sun Mar 28 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR NORTHEASTERN OCEAN...SOUTHEASTERN MERCER...MONMOUTH AND MIDDLESEX
COUNTIES...
At 734 PM EDT, severe thunderstorms were located along a line
extending from Colonia to near Manalapan, moving east at 50 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
New Brunswick, Perth Amboy, Long Branch, Asbury Park, Sandy Hook,
Edison, Lakewood, Middletown, Old Bridge, Howell, East Brunswick,
Sayreville, Marlboro, Manalapan, Carteret, Tinton Falls, Holmdel, Red
Bank, Matawan and Jamesburg.
This includes the following highways...
New Jersey Turnpike between exits 8 and 12.
Interstate 195 in New Jersey between mile markers 6 and 34.
Interstate 287 in New Jersey between mile markers 0 and 4.
Garden State Parkway between mile markers 93 and 133.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of
a building. This severe thunderstorm may contain little or no
lightning. Do not wait until you hear thunder before taking cover.
&&
LAT...LON 4008 7403 4016 7465 4037 7446 4060 7440
4059 7421 4056 7421 4055 7425 4050 7426
4050 7428 4046 7426 4041 7401 4044 7399
4048 7402 4048 7401 4046 7400 4044 7398
4043 7399 4042 7398 4021 7397
TIME...MOT...LOC 2334Z 271DEG 43KT 4057 7431 4023 7442
HAIL...<.75IN
WIND...60MPH
$$
Staarmann464
WWUS51 KPHI 282357
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
757 PM EDT Sun Mar 28 2021
NJC021-023-290006-
/O.CAN.KPHI.SV.W.0004.000000T0000Z-210329T0030Z/
Mercer NJ-Middlesex NJ-
757 PM EDT Sun Mar 28 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MERCER AND
MIDDLESEX COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the warned
area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
central and southern New Jersey.
LAT...LON 4008 7403 4011 7427 4019 7433 4028 7413
4043 7410 4041 7402 4044 7399 4048 7401
4044 7398 4042 7400 4040 7398 4020 7397
TIME...MOT...LOC 2356Z 279DEG 39KT 4042 7399 4027 7404 4012 7418
$$
NJC025-029-290030-
/O.CON.KPHI.SV.W.0004.000000T0000Z-210329T0030Z/
Ocean NJ-Monmouth NJ-
757 PM EDT Sun Mar 28 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 830 PM EDT
FOR NORTHEASTERN OCEAN AND EASTERN MONMOUTH COUNTIES...
At 756 PM EDT, severe thunderstorms were located along a line
extending from Highlands to near Elberon to Ramtown, moving east at
45 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Long Branch, Asbury Park, Sandy Hook, Lakewood, Howell, Tinton Falls,
Red Bank, Manasquan, Highlands, Point Pleasant Beach, Farmingdale,
Allenwood, Adelphia, Elberon, Ramtown, Navesink, Collingwood Park,
Freewood Acres, Lincroft and Vista Center.
This includes the following highways...
Interstate 195 in New Jersey between mile markers 24 and 34.
Garden State Parkway between mile markers 93 and 111.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of
a building. This severe thunderstorm may contain little or no
lightning. Do not wait until you hear thunder before taking cover.
&&
LAT...LON 4008 7403 4011 7427 4019 7433 4028 7413
4043 7410 4041 7402 4044 7399 4048 7401
4044 7398 4042 7400 4040 7398 4020 7397
TIME...MOT...LOC 2356Z 279DEG 39KT 4042 7399 4027 7404 4012 7418
HAIL...<.75IN
WIND...60MPH
$$
Staarmann654
WWUS51 KPHI 290017
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
817 PM EDT Sun Mar 28 2021
NJC025-029-290027-
/O.CAN.KPHI.SV.W.0004.000000T0000Z-210329T0030Z/
Ocean NJ-Monmouth NJ-
817 PM EDT Sun Mar 28 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN OCEAN AND EASTERN
MONMOUTH COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of the area.
Therefore, the warning has been cancelled. However gusty winds are
still possible through the rest of this evening.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
central and southern New Jersey.
LAT...LON 4008 7403 4011 7427 4019 7433 4028 7413
4043 7410 4041 7402 4044 7399 4048 7401
4044 7398 4042 7400 4040 7398 4020 7397
TIME...MOT...LOC 0016Z 267DEG 38KT 4043 7370 4028 7375 4013 7389
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 28, 2:39 AM EDT | Gale Warning | PHI | 35 hr | |
| Mar 28, 6:21 PM EDT | Special Marine Warning | PHI | 54 min | |
| Mar 28, 6:43 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Morris, Somerset, Warren | 47 min |
| Mar 28, 6:47 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester, Mercer, Monmouth, Salem | 43 min |
| Mar 28, 7:20 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Gloucester, Monmouth, Ocean | 70 min |
| Mar 28, 7:38 PM EDT | Special Marine Warning | PHI | 111 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.