Alert archive / New Jersey / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 98, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 17, 2018, 4:25 PM EDT for Middlesex County, Morris County, Somerset County, New Jersey. It was in force for 50 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
- Sep 17, 2018, 4:25 PM EDT (20:25 UTC)
- Expired
- Sep 17, 2018, 5:15 PM EDT
- In force
- 50 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Middlesex County, NJ, Morris County, NJ, Somerset County, NJ
The radar
The Philadelphia radar (KDIX), 80 km from the middle of the area, began a volume at 20:26 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, 8.4 hours before the alert went out and 133 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
- 1329 m above ground
- 0-6 km bulk shear
- 22 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
213
WUUS51 KPHI 172025
SVRPHI
NJC023-027-035-172115-
/O.NEW.KPHI.SV.W.0098.180917T2025Z-180917T2115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
425 PM EDT MON SEP 17 2018
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Southeastern Morris County in northern New Jersey...
Central Somerset County in northern New Jersey...
North central Middlesex County in northern New Jersey...
* Until 515 PM EDT.
* At 425 PM EDT, a severe thunderstorm was located over Bound Brook,
or near Somerville, moving northeast at 20 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, Morristown, Somerville, Somerset, North Brunswick,
Madison, Middlesex, Florham Park, East Hanover, Bound Brook,
Manville, Chatham, Morris Plains, Millstone, Colonia, Martinsville,
Millington, Society Hill, Basking Ridge and North Brunswick
Township.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. This storm may cause serious injury and significant
property damage.
&&
LAT...LON 4044 7448 4055 7468 4087 7445 4082 7435
4079 7437 4076 7438 4075 7436 4074 7437
4067 7446 4066 7445 4066 7441 4065 7440
4060 7446 4060 7430
TIME...MOT...LOC 2025Z 215DEG 16KT 4056 7453
HAIL...<.75IN
WIND...60MPH
$$
po1 follow-up statement
159
WWUS51 KPHI 172046
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
446 PM EDT MON SEP 17 2018
NJC023-172056-
/O.CAN.KPHI.SV.W.0098.000000T0000Z-180917T2115Z/
Middlesex NJ-
446 PM EDT MON SEP 17 2018
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL MIDDLESEX COUNTY
IS CANCELLED...
The severe thunderstorm which prompted the warning has moved out of
the warned area. Therefore, the warning has been cancelled.
LAT...LON 4076 7438 4075 7436 4067 7446 4066 7445
4066 7441 4064 7441 4060 7445 4062 7455
4085 7442 4082 7435
TIME...MOT...LOC 2046Z 215DEG 16KT 4064 7446
$$
NJC027-035-172115-
/O.CON.KPHI.SV.W.0098.000000T0000Z-180917T2115Z/
Morris NJ-Somerset NJ-
446 PM EDT MON SEP 17 2018
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM EDT
FOR SOUTHEASTERN MORRIS AND EAST CENTRAL SOMERSET COUNTIES...
At 446 PM EDT, a severe thunderstorm was located over Plainfield,
moving northeast at 20 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Madison, Florham Park, East Hanover, Chatham, Millington, North
Plainfield, Watchung and Hanover Township.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
Intense thunderstorm lines can produce brief tornadoes and widespread
significant wind damage. Although a tornado is not immediately
likely, it is best to move to an interior room on the lowest floor of
a building. This storm may cause serious injury and significant
property damage.
&&
LAT...LON 4076 7438 4075 7436 4067 7446 4066 7445
4066 7441 4064 7441 4060 7445 4062 7455
4085 7442 4082 7435
TIME...MOT...LOC 2046Z 215DEG 16KT 4064 7446
HAIL...<.75IN
WIND...60MPH
$$
poThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 17, 3:29 AM EDT | Small Craft Advisory | PHI | 39 hr | |
| Sep 17, 3:51 PM EDT | Special Weather Statement | PHI | Somerset | 39 min |
| Sep 17, 4:15 PM EDT | Special Weather Statement | PHI | Morris | 45 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 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.