Alert archive / New Jersey / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 66, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 3, 2018, 1:27 PM EDT for 4 counties in New Jersey; Bucks County, Pennsylvania. It was in force for 48 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 3, 2018, 1:27 PM EDT (17:27 UTC)
- Expired
- Aug 3, 2018, 2:15 PM EDT
- In force
- 48 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Hunterdon County, NJ, Mercer County, NJ, Middlesex County, NJ, Somerset County, NJ, Bucks County, PA
The radar
The Philadelphia radar (KDIX), 47 km from the middle of the area, began a volume at 17:30 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 nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 5.5 hours before the alert went out and 174 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
- 1132 J/kg
- Mixed-layer CIN
- -22 J/kg
- Mixed-layer LCL
- 732 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 56 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 2.2
The text
As transmitted.
655
WUUS51 KPHI 031727
SVRPHI
NJC019-021-023-035-PAC017-031815-
/O.NEW.KPHI.SV.W.0066.180803T1727Z-180803T1815Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
127 PM EDT FRI AUG 3 2018
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...
Southern Somerset County in northern New Jersey...
West central Middlesex County in northern New Jersey...
Southeastern Bucks County in southeastern Pennsylvania...
* Until 215 PM EDT.
* At 127 PM EDT, a severe thunderstorm was located over Woodside, or
near Trenton, moving northeast at 30 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, Somerset, East Brunswick, South Brunswick,
North Brunswick, Ewing, Princeton, Manville, Pennington, Yardley,
Newtown, Hopewell, Tullytown, Langhorne, Rocky Hill, Millstone,
Washington Crossing, Skillman and Flagtown.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
In addition to damaging winds, frequent cloud to ground lightning is
occurring with this storm. Move indoors immediately. Remember, if
you can hear thunder, you are close enough to be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4012 7480 4012 7483 4022 7500 4062 7475
4045 7442
TIME...MOT...LOC 1727Z 215DEG 28KT 4023 7485
HAIL...<.75IN
WIND...60MPH
$$
Meola2 follow-up statements
307
WWUS51 KPHI 031751
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
151 PM EDT FRI AUG 3 2018
PAC017-031800-
/O.CAN.KPHI.SV.W.0066.000000T0000Z-180803T1815Z/
Bucks PA-
151 PM EDT FRI AUG 3 2018
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN BUCKS COUNTY IS
CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4027 7462 4039 7489 4062 7475 4045 7442
TIME...MOT...LOC 1750Z 212DEG 33KT 4041 7470
$$
NJC019-021-023-035-031815-
/O.CON.KPHI.SV.W.0066.000000T0000Z-180803T1815Z/
Hunterdon NJ-Mercer NJ-Somerset NJ-Middlesex NJ-
151 PM EDT FRI AUG 3 2018
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM EDT
FOR SOUTHEASTERN HUNTERDON...NORTHEASTERN MERCER...SOUTHERN SOMERSET
AND WEST CENTRAL MIDDLESEX COUNTIES...
At 150 PM EDT, a severe thunderstorm was located over Skillman, or 11
miles south of Somerville, moving northeast at 40 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, Somerset, East Brunswick, South Brunswick, North
Brunswick, Princeton, Manville, Hopewell, Rocky Hill, Millstone,
Skillman, Flagtown, Princeton Meadows, Kingston, Dayton, Plainsboro
Center, Belle Mead, North Brunswick Township, Kendall Park and
Cloverhill.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
In addition to damaging winds, frequent cloud to ground lightning is
occurring with this storm. Move indoors immediately. Remember, if
you can hear thunder, you are close enough to be struck by lightning.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4027 7462 4039 7489 4062 7475 4045 7442
TIME...MOT...LOC 1750Z 212DEG 33KT 4041 7470
HAIL...<.75IN
WIND...60MPH
$$
Meola546
WWUS51 KPHI 031808
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
208 PM EDT FRI AUG 3 2018
NJC019-021-023-035-031818-
/O.EXP.KPHI.SV.W.0066.000000T0000Z-180803T1815Z/
Hunterdon NJ-Mercer NJ-Somerset NJ-Middlesex NJ-
208 PM EDT FRI AUG 3 2018
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN HUNTERDON...
NORTHEASTERN MERCER...SOUTHERN SOMERSET AND WEST CENTRAL MIDDLESEX
COUNTIES WILL EXPIRE AT 215 PM EDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
LAT...LON 4027 7462 4039 7489 4062 7475 4045 7442
TIME...MOT...LOC 1808Z 215DEG 28KT 4051 7461
$$
MeolaThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 2, 9:35 PM EDT | Special Weather Statement | PHI | Somerset | 25 min |
| Aug 2, 10:05 PM EDT | Special Weather Statement | PHI | Morris, Somerset | 55 min |
| Aug 3, 11:47 AM EDT | Special Marine Warning | PHI | 88 min | |
| Aug 3, 12:17 PM EDT | Special Weather Statement | PHI | Cape May | 43 min |
| Aug 3, 12:37 PM EDT | Special Weather Statement | PHI | Camden, Gloucester | 38 min |
| Aug 3, 12:52 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland | 21 min |
| Aug 3, 1:01 PM EDT | Special Weather Statement | PHI | Hunterdon | 44 min |
| Aug 3, 1:14 PM EDT | Special Weather Statement | PHI | Mercer | 46 min |
| Aug 3, 1:42 PM EDT | Special Weather Statement | PHI | Hunterdon, Morris, Sussex, Warren | 63 min |
| Aug 3, 2:00 PM EDT | Severe Thunderstorm Warning | PHI | Middlesex, Somerset | 30 min |
| Aug 3, 2:37 PM EDT | Special Weather Statement | PHI | Morris, Sussex | 38 min |
| Aug 3, 2:54 PM EDT | Special Marine Warning | PHI | 20 min | |
| Aug 3, 3:33 PM EDT | Special Weather Statement | PHI | Camden, Gloucester, Salem | 57 min |
| Aug 3, 4:31 PM EDT | Special Weather Statement | PHI | Salem | 59 min |
| Aug 3, 4:45 PM EDT | Special Weather Statement | PHI | Warren | 60 min |
| Aug 3, 5:25 PM EDT | Special Weather Statement | PHI | Monmouth, Ocean | 50 min |
| Aug 3, 5:27 PM EDT | Special Weather Statement | PHI | Burlington, Camden, Gloucester | 63 min |
| Aug 3, 6:52 PM EDT | Special Weather Statement | PHI | Sussex, Warren | 113 min |
| Aug 3, 7:56 PM EDT | Areal Flood Advisory | PHI | Sussex, Warren | 4 hr |
| Aug 3, 3:42 PM EDT | Special Weather Statement | PHI | Lehigh, Northampton | 63 min |
| Aug 3, 5:45 PM EDT | Special Weather Statement | PHI | Delaware, Montgomery, Philadelphia | 60 min |
| Aug 3, 7:37 PM EDT | Areal Flood Advisory | PHI | Berks, Lehigh | 4 hr |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2018Severe Thunderstorm Warnings in Pennsylvania, 2018Every severe thunderstorm warning in 2018
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.