Alert archive / New Jersey / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 319, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Nov 13, 2021, 1:15 PM EST for Mercer County, Middlesex County, Somerset County, New Jersey. It was in force for 13 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
- Nov 13, 2021, 1:15 PM EST (18:15 UTC)
- Expired
- Nov 13, 2021, 1:28 PM EST
- In force
- 13 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, Somerset County, NJ
The radar
The Philadelphia radar (KDIX), 64 km from the middle of the area, began a volume at 18:19 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 |
|---|---|---|---|
| Nov 13, 12:27 PM EST | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 6.3 hours before the alert went out and 129 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
- 1435 m above ground
- 0-6 km bulk shear
- 82 kt
- 0-1 km storm-relative helicity
- 14 m²/s²
- 0-3 km storm-relative helicity
- 34 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
706
WUUS51 KPHI 131815
SVRPHI
NJC021-023-035-131915-
/O.NEW.KPHI.SV.W.0319.211113T1815Z-211113T1915Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
115 PM EST Sat Nov 13 2021
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Northeastern Mercer County in central New Jersey...
Southeastern Somerset County in northern New Jersey...
Middlesex County in northern New Jersey...
* Until 215 PM EST.
* At 114 PM EST, a severe thunderstorm was located over Kingston, or
11 miles southwest of New Brunswick, moving northeast at 40 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...
New Brunswick, Perth Amboy, Somerset, Edison, Old Bridge, East
Brunswick, South Brunswick, Sayreville, North Brunswick, Carteret,
Middlesex, Princeton, Rocky Hill, Millstone, Princeton Meadows,
Colonia, Kingston, Dayton, Plainsboro Center and North Brunswick
Township.
This includes the following highways...
New Jersey Turnpike between exits 10 and 13.
Interstate 287 in New Jersey between mile markers 0 and 11.
Garden State Parkway between mile markers 123 and 134.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4056 7421 4055 7425 4050 7426 4050 7428
4046 7425 4028 7465 4041 7470 4060 7445
4061 7431 4059 7429 4060 7426 4059 7420
TIME...MOT...LOC 1814Z 230DEG 34KT 4037 7459
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...1.00 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
SFJ1 follow-up statement
799
WWUS51 KPHI 131828
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
128 PM EST Sat Nov 13 2021
NJC021-023-035-131838-
/O.CAN.KPHI.SV.W.0319.000000T0000Z-211113T1915Z/
Mercer NJ-Somerset NJ-Middlesex NJ-
128 PM EST Sat Nov 13 2021
...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN MERCER...
SOUTHEASTERN SOMERSET AND MIDDLESEX COUNTIES IS CANCELLED...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning has been cancelled. However small hail is
still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 700 PM EST for
northern New Jersey.
LAT...LON 4056 7421 4055 7425 4050 7426 4050 7428
4046 7425 4028 7465 4041 7470 4060 7445
4061 7431 4059 7429 4060 7426 4059 7420
TIME...MOT...LOC 1827Z 230DEG 34KT 4046 7446
$$
SFJThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 13, 2:55 AM EST | Wind Advisory | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 5 more | 14 hr |
| Nov 13, 12:22 PM EST | Severe Thunderstorm Warning | PHI | Hunterdon, Morris, Somerset, Sussex, Warren | 53 min |
| Nov 13, 1:51 PM EST | Severe Thunderstorm Warning | PHI | Middlesex | 9 min |
| Nov 13, 2:04 PM EST | Severe Thunderstorm Warning | PHI | Monmouth, Ocean | 41 min |
| Nov 13, 2:06 PM EST | Special Marine Warning | PHI | 54 min | |
| Nov 13, 2:21 PM EST | Severe Thunderstorm Warning | PHI | Ocean | 24 min |
| Nov 13, 2:22 PM EST | Special Marine Warning | PHI | 53 min | |
| Nov 13, 2:57 PM EST | Special Marine Warning | PHI | 20 min | |
| Nov 13, 6:59 PM EST | Small Craft Advisory | PHI | 11 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.