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 Aug 12, 2021, 11:49 PM EDT for 6 counties in New Jersey; Northampton County, Pennsylvania. It was in force for 56 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 12, 2021, 11:49 PM EDT (03:49 UTC)
- Expired
- Aug 13, 2021, 12:45 AM EDT
- In force
- 56 min
- Issued by
- NWS Philadelphia/Mount Holly
- Hail
- 0.00 in
- Wind
- 40
Counties Hunterdon County, NJ, Middlesex County, NJ, Morris County, NJ, Somerset County, NJ, Sussex County, NJ, Warren County, NJ, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 112 km from the middle of the area, began a volume at 03:51 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 00:00Z, 3.8 hours before the alert went out and 148 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
- 367 J/kg
- Mixed-layer CIN
- -254 J/kg
- Mixed-layer LCL
- 1626 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 252 m²/s²
- 0-3 km storm-relative helicity
- 277 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
197
WWUS81 KPHI 130349
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
1149 PM EDT Thu Aug 12 2021
NJZ001-007>010-012-015-PAZ055-061-062-105-106-130445-
Hunterdon NJ-Morris NJ-Sussex NJ-Somerset NJ-Middlesex NJ-Warren NJ-
Mercer NJ-Lower Bucks PA-Upper Bucks PA-Lehigh PA-Monroe PA-
Northampton PA-
1149 PM EDT Thu Aug 12 2021
...Strong thunderstorms will impact portions of Hunterdon, Morris,
Sussex, Warren, northwestern Mercer, Somerset, Middlesex, east
central Lehigh, northwestern Bucks, eastern Monroe and Northampton
Counties through 1245 AM EDT...
At 1149 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from Hainesville to Bedminster. Movement was east at
40 mph.
HAZARD...Winds in excess of 40 mph.
SOURCE...Radar indicated.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
New Brunswick, Easton, Morristown, Somerville, Newton, Somerset,
Edison, Bethlehem, Old Bridge, East Brunswick, Bridgewater, South
Brunswick, North Brunswick, Dover, Madison, Hopatcong, Forks,
Middlesex, Princeton and Florham Park.
People at the Musikfest, and New Jersey State Fair should seek safe
shelter immediately!
This includes the following highways...
New Jersey Turnpike between exits 9 and 11.
Northeast Extension between mile markers 41 and 43.
Interstate 78 in Pennsylvania between mile markers 66 and 76.
Interstate 78 in New Jersey between mile markers 0 and 43.
Interstate 80 in Pennsylvania between mile markers 307 and 314.
Interstate 80 in New Jersey between mile markers 0 and 50.
Interstate 287 in New Jersey between mile markers 0 and 52.
Garden State Parkway between mile markers 130 and 133.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4120 7437 4104 7450 4105 7445 4097 7428
4090 7427 4091 7430 4075 7436 4067 7446
4066 7440 4060 7446 4059 7429 4033 7436
4039 7543 4125 7520 4125 7513 4115 7515
4108 7503 4116 7490 4130 7481 4130 7456
TIME...MOT...LOC 0349Z 257DEG 40KT 4125 7483 4045 7520
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
$$
FitzsimmonsThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 7:32 PM EDT | Special Marine Warning | PHI | 88 min | |
| Aug 12, 10:27 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Carbon | 48 min |
| Aug 12, 11:20 PM EDT | Special Weather Statement | PHI | Carbon, Lehigh, Northampton | 40 min |
| Aug 13, 5:31 PM EDT | Special Weather Statement | PHI | Chester | 44 min |
| Aug 13, 3:21 PM EDT | Special Weather Statement | PHI | Sussex | 24 min |
| Aug 13, 6:04 PM EDT | Special Weather Statement | PHI | Sussex | 26 min |
| Aug 13, 6:45 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 30 min |
| Aug 13, 6:47 PM EDT | Special Weather Statement | PHI | Sussex | 43 min |
| Aug 13, 6:53 PM EDT | Severe Thunderstorm Warning | PHI | Sussex | 37 min |
| Aug 13, 7:12 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 33 min |
| Aug 13, 7:30 PM EDT | Special Weather Statement | PHI | Sussex | 45 min |
| Aug 13, 7:43 PM EDT | Severe Thunderstorm Warning | PHI | Kent, Sussex | 47 min |
| Aug 13, 7:57 PM EDT | Areal Flood Advisory | PHI | Kent, Sussex | 93 min |
| Aug 13, 6:02 PM EDT | Special Weather Statement | PHI | Kent, Queen Anne's | 58 min |
| Aug 13, 6:29 PM EDT | Special Weather Statement | PHI | Caroline | 31 min |
| Aug 13, 6:29 PM EDT | Severe Thunderstorm Warning | PHI | Queen Anne's, Talbot | 25 min |
Nearby
Special Weather Statements in New Jersey, 2021Special Weather Statements in Pennsylvania, 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.