Alert archive / New Jersey / Special Weather Statements in 2021
Special Weather Statement, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this special weather statement at Oct 4, 2021, 2:51 PM EDT for Hunterdon County, Somerset County, New Jersey. It was in force for 39 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
- Oct 4, 2021, 2:51 PM EDT (18:51 UTC)
- Expired
- Oct 4, 2021, 3:30 PM EDT
- In force
- 39 min
- Issued by
- NWS Philadelphia/Mount Holly
- Hail
- 0.25 in
- Wind
- 50
Counties Hunterdon County, NJ, Somerset County, NJ
The radar
The Philadelphia radar (KDIX), 92 km from the middle of the area, began a volume at 18:52 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, 6.9 hours before the alert went out and 160 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
- 160 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 481 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 52 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted.
658
WWUS81 KPHI 041851
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
251 PM EDT Mon Oct 4 2021
NJZ001-007>010-041930-
Hunterdon NJ-Morris NJ-Sussex NJ-Somerset NJ-Warren NJ-
251 PM EDT Mon Oct 4 2021
...A strong thunderstorm will impact portions of northeastern
Hunterdon, southwestern Morris, southwestern Sussex, northeastern
Warren and western Somerset Counties through 330 PM EDT...
At 250 PM EDT, Doppler radar was tracking a strong thunderstorm over
Glen Gardner, or 17 miles east of Easton, moving east at 15 mph.
HAZARD...Wind gusts up to 50 mph and pea size hail.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects. Minor damage to outdoor objects is
possible.
Locations impacted include...
Somerville, Bridgewater, Hopatcong, Manville, Hackettstown,
Washington, Mount Arlington, Flemington, High Bridge, Stanhope,
Netcong, Clinton, Peapack And Gladstone, Oxford, Glen Gardner,
Chester, Hampton, Lebanon, Califon and Far Hills.
This includes the following highways...
Interstate 78 in New Jersey between mile markers 13 and 33.
Interstate 80 in New Jersey between mile markers 13 and 29.
Interstate 287 in New Jersey between mile markers 15 and 24.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with this storm and may lead to
localized flooding. Do not drive your vehicle through flooded
roadways.
This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.
&&
LAT...LON 4100 7465 4074 7464 4046 7453 4042 7475
4049 7496 4074 7499 4101 7493
TIME...MOT...LOC 1850Z 264DEG 13KT 4072 7489
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...50 MPH
$$
DavisNearby
Special Weather Statements in New Jersey, 2021Every special weather statement 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.