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 11, 2021, 7:57 PM EDT for Hunterdon County, Middlesex County, Somerset County, New Jersey. It was in force for 48 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 11, 2021, 7:57 PM EDT (23:57 UTC)
- Expired
- Aug 11, 2021, 8:45 PM EDT
- In force
- 48 min
- Issued by
- NWS Philadelphia/Mount Holly
- Hail
- 0.25 in
- Wind
- 40
Counties Hunterdon County, NJ, Middlesex County, NJ, Somerset County, NJ
The radar
The Philadelphia radar (KDIX), 69 km from the middle of the area, began a volume at 23:55 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, 12.0 hours before the alert went out and 158 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
- 977 J/kg
- Mixed-layer CIN
- -44 J/kg
- Mixed-layer LCL
- 711 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 18 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
883
WWUS81 KPHI 112357
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
757 PM EDT Wed Aug 11 2021
NJZ007>010-012-013-015-120045-
Hunterdon NJ-Morris NJ-Western Monmouth NJ-Somerset NJ-Middlesex NJ-
Warren NJ-Mercer NJ-
757 PM EDT Wed Aug 11 2021
...Strong thunderstorms will impact portions of Hunterdon,
southwestern Morris, southern Warren, northwestern Mercer, Somerset
and western Middlesex Counties through 845 PM EDT...
At 757 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from Hampton to near Hopewell. Movement was
northeast at 50 mph.
HAZARD...Winds in excess of 40 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...
New Brunswick, Somerville, Somerset, Old Bridge, East Brunswick,
Bridgewater, South Brunswick, North Brunswick, Middlesex, Princeton,
Bound Brook, Manville, Hackettstown, Washington, Jamesburg, Mendham,
Flemington, Cranbury, High Bridge and Netcong.
This includes the following highways...
New Jersey Turnpike near exit 9.
Interstate 78 in New Jersey between mile markers 5 and 36.
Interstate 80 in New Jersey near mile marker 26.
Interstate 287 in New Jersey between mile markers 8 and 26.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
A Severe Thunderstorm Watch remains in effect until 900 PM EDT for
central and northwestern New Jersey...and eastern and southeastern
Pennsylvania.
&&
LAT...LON 4029 7429 4038 7496 4076 7518 4091 7472
TIME...MOT...LOC 2357Z 237DEG 45KT 4072 7494 4038 7484
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
$$
JEOThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 10, 8:02 PM EDT | Severe Thunderstorm Warning | PHI | Camden, Gloucester | 43 min |
| Aug 10, 8:18 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 42 min |
| Aug 10, 8:23 PM EDT | Special Marine Warning | PHI | 79 min | |
| Aug 10, 8:36 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Salem | 39 min |
| Aug 10, 8:43 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester | 2 hr |
| Aug 10, 9:07 PM EDT | Special Weather Statement | PHI | Burlington, Camden, Cumberland | 23 min |
| Aug 11, 2:56 PM EDT | Excessive Heat Watch | PHI | Hunterdon, Morris, Warren | 12 hr |
| Aug 11, 5:57 PM EDT | Special Weather Statement | PHI | Sussex | 48 min |
| Aug 11, 6:32 PM EDT | Special Weather Statement | PHI | Morris, Sussex, Warren | 28 min |
| Aug 11, 6:50 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Morris, Somerset, Sussex, Warren | 3 hr |
| Aug 11, 7:04 PM EDT | Areal Flood Advisory | PHI | Gloucester, Hunterdon, Salem | 2 hr |
| Aug 11, 7:04 PM EDT | Severe Thunderstorm Warning | PHI | Morris, Sussex, Warren | 41 min |
| Aug 11, 7:11 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester | 49 min |
| Aug 11, 7:28 PM EDT | Flash Flood Warning | PHI | Morris, Warren | 3 hr |
| Aug 11, 7:45 PM EDT | Special Weather Statement | PHI | Morris | 45 min |
| Aug 11, 7:52 PM EDT | Special Weather Statement | PHI | Atlantic, Burlington, Camden, Gloucester, Mercer | 53 min |
| Aug 11, 4:46 PM EDT | Special Weather Statement | PHI | Monroe | 44 min |
| Aug 11, 4:58 PM EDT | Special Weather Statement | PHI | Berks | 47 min |
| Aug 11, 5:20 PM EDT | Areal Flood Advisory | PHI | Carbon, Monroe | 57 min |
| Aug 11, 5:48 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 57 min |
| Aug 11, 6:16 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh, Montgomery | 44 min |
| Aug 11, 6:26 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Delaware, Montgomery | 49 min |
| Aug 11, 6:48 PM EDT | Severe Thunderstorm Warning | PHI | Bucks, Lehigh, Montgomery, Northampton | 42 min |
| Aug 10, 8:11 PM EDT | Special Weather Statement | PHI | New Castle | 34 min |
| Aug 10, 9:09 PM EDT | Special Weather Statement | PHI | Sussex | 36 min |
| Aug 10, 8:13 PM EDT | Special Weather Statement | PHI | Caroline, Talbot | 32 min |
| Aug 10, 8:43 PM EDT | Special Weather Statement | PHI | Caroline | 32 min |
| Aug 11, 6:11 PM EDT | Special Weather Statement | PHI | Caroline, Kent, Queen Anne's | 64 min |
Nearby
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.