Alert archive / New Jersey / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 260, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 25, 2020, 8:33 PM EDT for 5 counties in New Jersey. It was in force for 27 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
- Aug 25, 2020, 8:33 PM EDT (00:33 UTC)
- Expired
- Aug 25, 2020, 9:00 PM EDT
- In force
- 27 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), 34 km from the middle of the area, began a volume at 00:32 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 25, 3:34 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 0.6 hours before the alert went out and 158 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
- 179 J/kg
- Mixed-layer CIN
- -127 J/kg
- Mixed-layer LCL
- 1706 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- 38 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.0
The text
As transmitted.
837
WUUS51 KPHI 260033
SVRPHI
NJC021-023-025-029-035-260100-
/O.NEW.KPHI.SV.W.0260.200826T0033Z-200826T0100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
833 PM EDT Tue Aug 25 2020
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northwestern Ocean County in southern New Jersey...
Eastern Mercer County in central New Jersey...
Southern Somerset County in northern New Jersey...
Southern Monmouth County in central New Jersey...
Southwestern Middlesex County in northern New Jersey...
* Until 900 PM EDT.
* At 833 PM EDT, a severe thunderstorm was located over Plainsboro
Center, or 8 miles northeast of Trenton, moving southeast 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...
Trenton, Howell, Manalapan, Ewing, Princeton, Hightstown, Cranbury,
Allentown, Farmingdale, Roosevelt, Rocky Hill, Princeton Meadows,
Windsor, Kingston, Six Flags Theme Park, Plainsboro Center,
Jacksons Mills, West Freehold, Clearbrook Park and Cassville.
This includes the following highways...
New Jersey Turnpike between exits 8 and 9.
Interstate 195 in New Jersey between mile markers 3 and 33.
Interstate 295 in New Jersey between mile markers 63 and 71.
Garden State Parkway between mile markers 99 and 100.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Protecting yourself from immediate threats to life and safety shall
take priority. Whenever possible, as long as it does not cause
greater harm, all COVID-19 protective action guidance should be
followed.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4027 7478 4042 7466 4019 7406 4004 7446
TIME...MOT...LOC 0033Z 300DEG 41KT 4031 7464
HAIL...<.75IN
WIND...60MPH
$$
NC2 follow-up statements
869
WWUS51 KPHI 260051
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
851 PM EDT Tue Aug 25 2020
NJC035-260101-
/O.CAN.KPHI.SV.W.0260.000000T0000Z-200826T0100Z/
Somerset NJ-
851 PM EDT Tue Aug 25 2020
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN SOMERSET COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4025 7473 4035 7455 4019 7406 4004 7446
TIME...MOT...LOC 0051Z 300DEG 41KT 4020 7440
$$
NJC021-023-025-029-260100-
/O.CON.KPHI.SV.W.0260.000000T0000Z-200826T0100Z/
Ocean NJ-Mercer NJ-Monmouth NJ-Middlesex NJ-
851 PM EDT Tue Aug 25 2020
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR NORTHWESTERN OCEAN...SOUTHEASTERN MERCER...SOUTHERN MONMOUTH AND
SOUTHWESTERN MIDDLESEX COUNTIES...
At 851 PM EDT, a severe thunderstorm was located over Clarksburg, or
18 miles northwest of Toms River, moving southeast 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...
Howell, Manalapan, Hightstown, Cranbury, Allentown, Farmingdale,
Roosevelt, Princeton Meadows, Windsor, Six Flags Theme Park, Jacksons
Mills, West Freehold, Clearbrook Park, Cassville, Adelphia,
Clarksburg, Vista Center, Edinburg, Woodruff and Twin Rivers.
This includes the following highways...
New Jersey Turnpike between exits 8 and 8A.
Interstate 195 in New Jersey between mile markers 4 and 33.
Interstate 295 in New Jersey between mile markers 64 and 66.
Garden State Parkway between mile markers 99 and 100.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4025 7473 4035 7455 4019 7406 4004 7446
TIME...MOT...LOC 0051Z 300DEG 41KT 4020 7440
HAIL...<.75IN
WIND...60MPH
$$
NC161
WWUS51 KPHI 260057
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
857 PM EDT Tue Aug 25 2020
NJC021-023-025-029-260107-
/O.EXP.KPHI.SV.W.0260.000000T0000Z-200826T0100Z/
Ocean NJ-Mercer NJ-Monmouth NJ-Middlesex NJ-
857 PM EDT Tue Aug 25 2020
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN OCEAN...
SOUTHEASTERN MERCER...SOUTHERN MONMOUTH AND SOUTHWESTERN MIDDLESEX
COUNTIES WILL EXPIRE AT 900 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds are still possible with this thunderstorm.
To report severe weather, contact your nearest law enforcement
agency. They will relay your report to the National Weather Service
Mount Holly NJ.
LAT...LON 4025 7473 4035 7455 4019 7406 4004 7446
TIME...MOT...LOC 0057Z 300DEG 41KT 4017 7433
$$
NCThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 25, 8:59 PM EDT | Special Weather Statement | PHI | Ocean | 46 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2020Every severe thunderstorm warning in 2020
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; radar from the NEXRAD Level II archive.