Alert archive / New Jersey / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 81, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 14, 2021, 8:08 PM EDT for 5 counties in New Jersey; Bucks County, Pennsylvania. It was in force for 52 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 14, 2021, 8:08 PM EDT (00:08 UTC)
- Expired
- Jun 14, 2021, 9:00 PM EDT
- In force
- 52 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ, Somerset County, NJ, Bucks County, PA
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 14, 2:06 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 0.1 hours before the alert went out and 173 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
- 1380 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 120 m²/s²
- 0-3 km storm-relative helicity
- 157 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted.
644
WUUS51 KPHI 150008
SVRPHI
NJC019-021-023-025-035-PAC017-150100-
/O.NEW.KPHI.SV.W.0081.210615T0008Z-210615T0100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
808 PM EDT Mon Jun 14 2021
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southeastern Hunterdon County in northwestern New Jersey...
Mercer County in central New Jersey...
Southwestern Somerset County in northern New Jersey...
Southwestern Monmouth County in central New Jersey...
Southwestern Middlesex County in northern New Jersey...
Southeastern Bucks County in southeastern Pennsylvania...
* Until 900 PM EDT.
* At 808 PM EDT, a severe thunderstorm was located over Richboro, or
11 miles west of Trenton, moving east 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...
Trenton, Ewing, Princeton, Hightstown, Cranbury, Pennington,
Yardley, Newtown, Hopewell, Allentown, Langhorne, Ivyland,
Roosevelt, Rocky Hill, Washington Crossing, Skillman, Princeton
Meadows, Windsor, Kingston and Plainsboro Center.
This includes the following highways...
New Jersey Turnpike between exits 8 and 8A.
Pennsylvania Turnpike near mile marker 347.
Interstate 195 in New Jersey between mile markers 0 and 14.
Interstate 295 in New Jersey between mile markers 59 and 76.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4016 7445 4016 7466 4018 7471 4017 7470
4016 7471 4016 7505 4027 7512 4050 7461
TIME...MOT...LOC 0008Z 254DEG 31KT 4021 7498
HAIL...1.00IN
WIND...60MPH
$$
Staarmann2 follow-up statements
554
WWUS51 KPHI 150020
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
820 PM EDT Mon Jun 14 2021
NJC019-150030-
/O.CAN.KPHI.SV.W.0081.000000T0000Z-210615T0100Z/
Hunterdon NJ-
820 PM EDT Mon Jun 14 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HUNTERDON COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
southern, central, northern and northwestern New Jersey...and
southeastern Pennsylvania.
LAT...LON 4016 7466 4018 7471 4017 7470 4016 7471
4016 7490 4030 7496 4035 7487 4035 7486
4036 7486 4050 7461 4016 7445
TIME...MOT...LOC 0020Z 252DEG 32KT 4026 7482
$$
NJC021-023-025-035-PAC017-150100-
/O.CON.KPHI.SV.W.0081.000000T0000Z-210615T0100Z/
Mercer NJ-Somerset NJ-Monmouth NJ-Middlesex NJ-Bucks PA-
820 PM EDT Mon Jun 14 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR MERCER...SOUTH CENTRAL SOMERSET...SOUTHWESTERN MONMOUTH...
SOUTHWESTERN MIDDLESEX AND SOUTHEASTERN BUCKS COUNTIES...
At 820 PM EDT, a severe thunderstorm was located over Ewing, or near
Trenton, moving east 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...
Trenton, Ewing, Princeton, Hightstown, Cranbury, Pennington, Yardley,
Hopewell, Allentown, Roosevelt, Rocky Hill, Washington Crossing,
Skillman, Princeton Meadows, Windsor, Kingston, Plainsboro Center,
Belle Mead, Woodside and Edinburg.
This includes the following highways...
New Jersey Turnpike between exits 8 and 8A.
Interstate 195 in New Jersey between mile markers 0 and 14.
Interstate 295 in New Jersey between mile markers 59 and 76.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4016 7466 4018 7471 4017 7470 4016 7471
4016 7490 4030 7496 4035 7487 4035 7486
4036 7486 4050 7461 4016 7445
TIME...MOT...LOC 0020Z 252DEG 32KT 4026 7482
HAIL...1.00IN
WIND...60MPH
$$
Staarmann557
WWUS51 KPHI 150038
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
838 PM EDT Mon Jun 14 2021
NJC035-150048-
/O.CAN.KPHI.SV.W.0081.000000T0000Z-210615T0100Z/
Somerset NJ-
838 PM EDT Mon Jun 14 2021
...THE SEVERE THUNDERSTORM WARNING FOR SOUTH CENTRAL SOMERSET COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
southern, central and northern New Jersey...and southeastern
Pennsylvania.
LAT...LON 4016 7466 4018 7471 4017 7470 4016 7471
4016 7490 4020 7491 4038 7462 4037 7461
4041 7457 4016 7445
TIME...MOT...LOC 0038Z 253DEG 32KT 4031 7460
$$
NJC021-023-025-PAC017-150100-
/O.CON.KPHI.SV.W.0081.000000T0000Z-210615T0100Z/
Mercer NJ-Monmouth NJ-Middlesex NJ-Bucks PA-
838 PM EDT Mon Jun 14 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR MERCER...SOUTHWESTERN MONMOUTH...SOUTHWESTERN MIDDLESEX AND
SOUTHEASTERN BUCKS COUNTIES...
At 838 PM EDT, a severe thunderstorm was located over Plainsboro
Center, or 10 miles northeast of Trenton, moving east 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...
Trenton, Ewing, Princeton, Hightstown, Cranbury, Yardley, Allentown,
Roosevelt, Princeton Meadows, Windsor, Plainsboro Center, Woodside,
Edinburg, White Horse, Imlaystown, Mercerville-Hamilton Square,
Lawrenceville, Kingston, Twin Rivers and Levittown.
This includes the following highways...
New Jersey Turnpike between exits 8 and 8A.
Interstate 195 in New Jersey between mile markers 0 and 14.
Interstate 295 in New Jersey between mile markers 59 and 71.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4016 7466 4018 7471 4017 7470 4016 7471
4016 7490 4020 7491 4038 7462 4037 7461
4041 7457 4016 7445
TIME...MOT...LOC 0038Z 253DEG 32KT 4031 7460
HAIL...1.00IN
WIND...60MPH
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 14, 8:34 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester | 41 min |
| Jun 14, 8:55 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester | 50 min |
| Jun 14, 9:11 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester, Mercer, Middlesex, Monmouth and 1 more | 49 min |
| Jun 14, 9:12 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester, Mercer, Middlesex, Monmouth and 1 more | 74 min |
| Jun 14, 9:17 PM EDT | Flash Flood Warning | PHI | Burlington, Camden | 3 hr |
| Jun 14, 9:29 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester | 46 min |
| Jun 14, 9:54 PM EDT | Areal Flood Advisory | PHI | Monmouth | 97 min |
| Jun 14, 9:58 PM EDT | Severe Thunderstorm Warning | PHI | Monmouth | 32 min |
| Jun 14, 10:01 PM EDT | Special Marine Warning | PHI | 89 min | |
| Jun 14, 10:07 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Gloucester, Ocean | 53 min |
| Jun 14, 10:51 PM EDT | Special Marine Warning | PHI | 114 min | |
| Jun 14, 11:07 PM EDT | Special Marine Warning | PHI | 113 min | |
| Jun 14, 11:21 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Ocean | 39 min |
| Jun 14, 11:42 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cumberland, Gloucester, Salem | 63 min |
| Jun 14, 11:47 PM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Cape May, Cumberland, Ocean, Salem | 118 min |
| Jun 15, 12:04 AM EDT | Special Marine Warning | PHI | 116 min | |
| Jun 15, 12:12 AM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Gloucester | 51 min |
| Jun 15, 1:00 AM EDT | Special Marine Warning | PHI | 88 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2021Severe Thunderstorm Warnings in Pennsylvania, 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; the sounding from the Mesonet's radiosonde archive.