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 Sep 23, 2021, 2:47 PM EDT for Hunterdon County, Mercer County, New Jersey. It was in force for 28 min. 1 report came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Sep 23, 2021, 2:47 PM EDT (18:47 UTC)
- Expired
- Sep 23, 2021, 3:15 PM EDT
- In force
- 28 min
- Issued by
- NWS Philadelphia/Mount Holly
- Hail
- 0.00 in
- Wind
- 40
Counties Hunterdon County, NJ, Mercer County, NJ
The radar
The Philadelphia radar (KDIX), 55 km from the middle of the area, began a volume at 18:46 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Sep 23, 3:24 PM EDT | TSTM WND DMG | 1 Nw Skillman, NJ | DOWNED TREE LIMBS AND WIRES NEAR SERVIS ROAD. TIME ESTIMATED FROM RADAR. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 6.8 hours before the alert went out and 176 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
- 103 J/kg
- Mixed-layer CIN
- -11 J/kg
- Mixed-layer LCL
- 687 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 249 m²/s²
- 0-3 km storm-relative helicity
- 201 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 1.1
The text
As transmitted.
831
WWUS81 KPHI 231847
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
247 PM EDT Thu Sep 23 2021
NJZ009-010-012-015-019-PAZ106-231915-
Hunterdon NJ-Northwestern Burlington NJ-Somerset NJ-Middlesex NJ-
Mercer NJ-Lower Bucks PA-
247 PM EDT Thu Sep 23 2021
...Strong thunderstorms will impact portions of Hunterdon, Mercer,
north central Burlington, southwestern Somerset, southwestern
Middlesex and southeastern Bucks Counties through 315 PM EDT...
At 247 PM EDT, an automated wind sensor reported strong
thunderstorms producing wind gusts to 40 mph along a line extending
from Sand Brook to Pennington to Tullytown to Jacksonville.
Movement was north at 35 mph.
HAZARD...Wind gusts up to 40 mph.
SOURCE...Public.
IMPACT...Gusty winds could knock down tree limbs and blow around
unsecured objects.
Locations impacted include...
Trenton, Ewing, Princeton, Florence, Burlington, Bristol, Mount
Holly, Flemington, Bordentown, High Bridge, Clinton, Pennington, New
Hope, Yardley, Hopewell, Tullytown, Langhorne, Lebanon, Califon and
Rocky Hill.
This includes the following highways...
New Jersey Turnpike between exits 5 and 7A.
Pennsylvania Turnpike between mile markers 353 and 359.
Interstate 95 in Pennsylvania between mile markers 37 and 40.
Interstate 78 in New Jersey between mile markers 15 and 25.
Interstate 195 in New Jersey between mile markers 0 and 6.
Interstate 295 in New Jersey between mile markers 46 and 76.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
Torrential rainfall is also occurring with these storms and may lead
to localized flooding. Do not drive your vehicle through flooded
roadways.
&&
LAT...LON 3996 7477 4011 7495 4019 7493 4024 7488
4044 7503 4078 7488 4074 7481 4055 7466
4026 7456
TIME...MOT...LOC 1847Z 200DEG 31KT 4048 7493 4032 7482 4016 7481 4003
7477
MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 22, 8:43 PM EDT | Gale Warning | PHI | 18 hr | |
| Sep 23, 9:12 AM EDT | Coastal Flood Advisory | PHI | Burlington, Camden, Gloucester | 10 hr |
| Sep 23, 11:33 AM EDT | Areal Flood Advisory | PHI | Cumberland, Gloucester, Salem | 3 hr |
| Sep 23, 11:57 AM EDT | Flash Flood Warning | PHI | Gloucester, Salem | 3 hr |
| Sep 23, 12:12 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 48 min |
| Sep 23, 12:54 PM EDT | Special Weather Statement | PHI | Gloucester | 51 min |
| Sep 23, 12:56 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Hunterdon, Mercer, Warren | 3 hr |
| Sep 23, 1:13 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester, Salem | 47 min |
| Sep 23, 1:42 PM EDT | Flash Flood Warning | PHI | Burlington, Camden, Gloucester | 4 hr |
| Sep 23, 1:58 PM EDT | Special Weather Statement | PHI | Camden, Hunterdon | 32 min |
| Sep 23, 2:37 PM EDT | Areal Flood Advisory | PHI | Burlington, Hunterdon, Mercer, Middlesex, Monmouth, Morris and 3 more | 3 hr |
| Sep 23, 2:52 PM EDT | Special Weather Statement | PHI | Camden | 23 min |
| Sep 23, 3:13 PM EDT | Special Weather Statement | PHI | Mercer, Somerset | 32 min |
| Sep 23, 3:16 PM EDT | Special Weather Statement | PHI | Burlington | 29 min |
| Sep 23, 3:23 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Mercer, Middlesex, Morris, Somerset | 52 min |
| Sep 23, 3:26 PM EDT | Flash Flood Warning | PHI | Burlington, Hunterdon, Mercer, Middlesex, Morris, Somerset | 2 hr |
| Sep 23, 3:50 PM EDT | Special Weather Statement | PHI | Burlington | 25 min |
| Sep 23, 4:21 PM EDT | Areal Flood Advisory | PHI | Middlesex, Monmouth, Morris, Ocean, Somerset, Sussex | 15 min |
| Sep 23, 4:36 PM EDT | Flash Flood Warning | PHI | Middlesex, Monmouth, Morris, Somerset, Sussex | 3 hr |
| Sep 23, 5:00 PM EDT | Special Weather Statement | PHI | Monmouth | 30 min |
| Sep 23, 10:52 AM EDT | Areal Flood Advisory | PHI | Chester | 3 hr |
| Sep 23, 11:40 AM EDT | Areal Flood Advisory | PHI | Berks, Bucks, Carbon, Lehigh, Montgomery, Northampton | 3 hr |
| Sep 23, 12:28 PM EDT | Flash Flood Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 4 hr |
| Sep 23, 12:57 PM EDT | Special Weather Statement | PHI | Bucks | 33 min |
| Sep 23, 1:48 PM EDT | River Flood Warning | PHI | Chester | 5 hr |
| Sep 23, 4:26 PM EDT | Areal Flood Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 80 min |
| Sep 23, 7:18 PM EDT | Areal Flood Warning | PHI | Berks, Montgomery | 36 min |
| Sep 23, 11:11 AM EDT | Special Weather Statement | PHI | New Castle | 64 min |
| Sep 23, 11:42 AM EDT | Severe Thunderstorm Warning | PHI | New Castle | 33 min |
| Sep 23, 8:08 AM EDT | Special Weather Statement | PHI | Kent, Queen Anne's, Talbot | 52 min |
| Sep 23, 9:03 AM EDT | Areal Flood Advisory | PHI | Kent, Queen Anne's, Talbot | 3 hr |
| Sep 23, 9:31 AM EDT | Special Weather Statement | PHI | Kent, Queen Anne's, Talbot | 59 min |
| Sep 23, 9:46 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 44 min |
| Sep 23, 9:49 AM EDT | Flash Flood Warning | PHI | Kent, Queen Anne's, Talbot | 4 hr |
| Sep 23, 10:35 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's | 40 min |
| Sep 23, 10:55 AM EDT | Areal Flood Advisory | PHI | Caroline, Kent, Queen Anne's, Talbot | 3 hr |
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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.