Alert archive / New Jersey / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 33, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 13, 2018, 11:27 PM EDT for Northampton County, Pennsylvania; 4 counties in New Jersey. It was in force for 33 min. 3 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
- Jun 13, 2018, 11:27 PM EDT (03:27 UTC)
- Expired
- Jun 14, 2018, 12:00 AM EDT
- In force
- 33 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Hunterdon County, NJ, Morris County, NJ, Somerset County, NJ, Warren County, NJ, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 107 km from the middle of the area, began a volume at 03:29 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 |
|---|---|---|---|
| Jun 13, 11:31 PM EDT | TSTM WND DMG | 1 N Columbia, NJ | LARGE BRANCHES BLOCKING LANE ON I-80W. |
| Jun 13, 11:42 PM EDT | TSTM WND DMG | 1 Ene Independence Twp, NJ | TREE DOWN ON CATSWAMP RD |
| Jun 13, 11:46 PM EDT | TSTM WND DMG | 1 Ese Vienna, NJ | LARGE TREE BRANCH DOWN AT INTERSECTION OF ASBURY ROAD AND KETCHUM ROAD. TIME ESTIMATED FROM RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 00:00Z, 3.5 hours before the alert went out and 180 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
- 11 J/kg
- Mixed-layer CIN
- -172 J/kg
- Mixed-layer LCL
- 604 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 225 m²/s²
- 0-3 km storm-relative helicity
- 260 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
741
WUUS51 KPHI 140327
SVRPHI
NJC019-027-035-041-PAC095-140400-
/O.NEW.KPHI.SV.W.0033.180614T0327Z-180614T0400Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1127 PM EDT WED JUN 13 2018
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southwestern Morris County in northern New Jersey...
Northeastern Hunterdon County in northwestern New Jersey...
Central Warren County in northwestern New Jersey...
Northwestern Somerset County in northern New Jersey...
Northeastern Northampton County in eastern Pennsylvania...
* Until midnight EDT.
* At 1127 PM EDT, a severe thunderstorm was located over Belvidere,
or 12 miles northeast of Easton, moving east at 45 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Hackettstown, Washington, Bangor, Mendham, High Bridge, Clinton,
Belvidere, Harmony, Peapack And Gladstone, Oxford, Hope, Glen
Gardner, Chester, Belfast, Hampton, Lebanon, East Bangor, Califon,
Far Hills and Brass Castle.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4080 7534 4095 7509 4086 7453 4057 7472
TIME...MOT...LOC 0327Z 288DEG 40KT 4084 7507
HAIL...0.75IN
WIND...60MPH
$$
CMS2 follow-up statements
064
WWUS51 KPHI 140344
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1144 PM EDT WED JUN 13 2018
PAC095-140353-
/O.CAN.KPHI.SV.W.0033.000000T0000Z-180614T0400Z/
Northampton PA-
1144 PM EDT WED JUN 13 2018
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN NORTHAMPTON
COUNTY IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4073 7516 4090 7493 4083 7455 4057 7472
TIME...MOT...LOC 0343Z 290DEG 33KT 4079 7488
$$
NJC019-027-035-041-140400-
/O.CON.KPHI.SV.W.0033.000000T0000Z-180614T0400Z/
Morris NJ-Hunterdon NJ-Warren NJ-Somerset NJ-
1144 PM EDT WED JUN 13 2018
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL MIDNIGHT EDT
FOR SOUTHWESTERN MORRIS...NORTHEASTERN HUNTERDON...CENTRAL WARREN AND
NORTHWESTERN SOMERSET COUNTIES...
At 1143 PM EDT, a severe thunderstorm was located over Beatyestown,
or 18 miles east of Easton, moving east at 40 mph. Wind damage was
reported on Interstate 80 in Warren County with this storm earlier.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Hackettstown, Washington, Mendham, High Bridge, Clinton, Harmony,
Peapack And Gladstone, Oxford, Glen Gardner, Chester, Hampton,
Lebanon, Califon, Far Hills, Brass Castle, Long Valley, Great
Meadows-Vienna, Pleasant Valley, Annandale and White House Station.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
In addition to large hail and 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.
&&
LAT...LON 4073 7516 4090 7493 4083 7455 4057 7472
TIME...MOT...LOC 0343Z 290DEG 33KT 4079 7488
HAIL...0.75IN
WIND...60MPH
$$
CMS718
WWUS51 KPHI 140358
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1158 PM EDT WED JUN 13 2018
NJC019-027-035-041-140407-
/O.EXP.KPHI.SV.W.0033.000000T0000Z-180614T0400Z/
Morris NJ-Hunterdon NJ-Warren NJ-Somerset NJ-
1158 PM EDT WED JUN 13 2018
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN MORRIS...
NORTHEASTERN HUNTERDON...CENTRAL WARREN AND NORTHWESTERN SOMERSET
COUNTIES WILL EXPIRE AT MIDNIGHT EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with this thunderstorm.
LAT...LON 4073 7516 4090 7493 4083 7455 4057 7472
TIME...MOT...LOC 0357Z 288DEG 40KT 4074 7470
$$
GorseThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 13, 9:55 PM EDT | Special Weather Statement | PHI | Carbon | 50 min |
| Jun 13, 10:07 PM EDT | Severe Thunderstorm Warning | PHI | Carbon, Monroe | 53 min |
| Jun 13, 10:39 PM EDT | Tornado Warning | PHI | Monroe | 36 min |
| Jun 13, 10:56 PM EDT | Severe Thunderstorm Warning | PHI | Monroe, Northampton | 49 min |
| Jun 13, 11:59 PM EDT | Special Weather Statement | PHI | Somerset | 31 min |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.