Alert archive / New Jersey / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 78, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 14, 2021, 7:02 PM EDT for Mercer County, Middlesex County, Monmouth County, New Jersey. It was in force for 43 min. 1 report 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
- Jun 14, 2021, 7:02 PM EDT (23:02 UTC)
- Expired
- Jun 14, 2021, 7:45 PM EDT
- In force
- 43 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Mercer County, NJ, Middlesex County, NJ, Monmouth County, NJ
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 14, 7:28 PM EDT | HAIL 0.75 | Manalapan Twp, 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 |
|---|---|---|---|
| Jun 14, 2:06 PM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 11.0 hours before the alert went out and 148 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
- 687 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 48 m²/s²
- 0-3 km storm-relative helicity
- 88 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
The text
As transmitted.
449
WUUS51 KPHI 142302
SVRPHI
NJC021-023-025-142345-
/O.NEW.KPHI.SV.W.0078.210614T2302Z-210614T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
702 PM EDT Mon Jun 14 2021
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
East central Mercer County in central New Jersey...
Central Monmouth County in central New Jersey...
Southern Middlesex County in northern New Jersey...
* Until 745 PM EDT.
* At 701 PM EDT, a severe thunderstorm was located over Clearbrook
Park, or 11 miles south of New Brunswick, moving east at 10 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...
Old Bridge, East Brunswick, Manalapan, Jamesburg, Hightstown,
Cranbury, Roosevelt, Princeton Meadows, Yorketown, Brownville, Twin
Rivers, Whittingham, Robertsville, Morganville, West Freehold,
Clearbrook Park, Dayton, Freehold, Spotswood and Helmetta.
This includes New Jersey Turnpike between exits 8A and 9.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4024 7455 4035 7457 4044 7426 4017 7427
TIME...MOT...LOC 2301Z 264DEG 9KT 4032 7445
HAIL...1.00IN
WIND...60MPH
$$
Staarmann3 follow-up statements
178
WWUS51 KPHI 142320
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
720 PM EDT Mon Jun 14 2021
NJC021-023-025-142345-
/O.CON.KPHI.SV.W.0078.000000T0000Z-210614T2345Z/
Mercer NJ-Monmouth NJ-Middlesex NJ-
720 PM EDT Mon Jun 14 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR EAST CENTRAL MERCER...CENTRAL MONMOUTH AND SOUTHERN MIDDLESEX
COUNTIES...
At 719 PM EDT, a severe thunderstorm was located over Yorketown, or
14 miles south of New Brunswick, moving east at 10 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Old Bridge, East Brunswick, Manalapan, Jamesburg, Hightstown,
Cranbury, Roosevelt, Princeton Meadows, Yorketown, Brownville, Twin
Rivers, Whittingham, Robertsville, Morganville, West Freehold,
Clearbrook Park, Dayton, Freehold, Spotswood and Helmetta.
This includes New Jersey Turnpike between exits 8A and 9.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4024 7455 4035 7457 4044 7426 4017 7427
TIME...MOT...LOC 2319Z 252DEG 11KT 4029 7436
HAIL...1.00IN
WIND...60MPH
$$
Staarmann881
WWUS51 KPHI 142327
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
727 PM EDT Mon Jun 14 2021
NJC021-142337-
/O.CAN.KPHI.SV.W.0078.000000T0000Z-210614T2345Z/
Mercer NJ-
727 PM EDT Mon Jun 14 2021
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL MERCER 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
northern and central New Jersey.
LAT...LON 4021 7438 4033 7443 4043 7426 4021 7427
TIME...MOT...LOC 2327Z 252DEG 11KT 4030 7433
$$
NJC023-025-142345-
/O.CON.KPHI.SV.W.0078.000000T0000Z-210614T2345Z/
Monmouth NJ-Middlesex NJ-
727 PM EDT Mon Jun 14 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 745 PM EDT
FOR CENTRAL MONMOUTH AND SOUTHEASTERN MIDDLESEX COUNTIES...
At 727 PM EDT, a severe thunderstorm was located over Yorketown, or
14 miles southeast of New Brunswick, moving east at 10 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Minor damage to vehicles is possible. Wind damage to roofs,
siding, trees, and power lines is possible.
Locations impacted include...
Old Bridge, Manalapan, Robertsville, Yorketown, Morganville,
Brownville, West Freehold, Freehold and Englishtown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4021 7438 4033 7443 4043 7426 4021 7427
TIME...MOT...LOC 2327Z 252DEG 11KT 4030 7433
HAIL...1.00IN
WIND...60MPH
$$
Staarmann156
WWUS51 KPHI 142336
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
736 PM EDT Mon Jun 14 2021
NJC023-025-142346-
/O.EXP.KPHI.SV.W.0078.000000T0000Z-210614T2345Z/
Monmouth NJ-Middlesex NJ-
736 PM EDT Mon Jun 14 2021
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL MONMOUTH AND
SOUTHEASTERN MIDDLESEX COUNTIES WILL EXPIRE AT 745 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 small hail
is still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
northern and central New Jersey.
LAT...LON 4021 7438 4033 7443 4043 7426 4021 7427
TIME...MOT...LOC 2336Z 264DEG 9KT 4030 7431
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 14, 5:53 PM EDT | Special Weather Statement | PHI | Sussex | 37 min |
| Jun 14, 6:24 PM EDT | Special Weather Statement | PHI | Sussex | 36 min |
| Jun 14, 6:33 PM EDT | Special Weather Statement | PHI | Middlesex, Monmouth | 27 min |
| Jun 14, 6:48 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Somerset, Sussex | 42 min |
| Jun 14, 7:14 PM EDT | Areal Flood Advisory | PHI | Middlesex, Monmouth | 2 hr |
| Jun 14, 7:55 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Morris, Somerset | 32 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.