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 8, 2021, 10:56 PM EDT for Warren County, New Jersey; Northampton County, Pennsylvania. It was in force for 34 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
- Sep 8, 2021, 10:56 PM EDT (02:56 UTC)
- Expired
- Sep 8, 2021, 11:30 PM EDT
- In force
- 34 min
- Issued by
- NWS Philadelphia/Mount Holly
- Hail
- 0.25 in
- Wind
- 40
Counties Warren County, NJ, Northampton County, PA
The radar
The Philadelphia radar (KDIX), 118 km from the middle of the area, began a volume at 02:58 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, 2.9 hours before the alert went out and 180 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
- 619 J/kg
- Mixed-layer CIN
- -36 J/kg
- Mixed-layer LCL
- 807 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 211 m²/s²
- 0-3 km storm-relative helicity
- 225 m²/s²
- Significant tornado parameter
- 0.5
- Supercell composite
- 3.4
The text
As transmitted.
344
WWUS81 KPHI 090256
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
1056 PM EDT Wed Sep 8 2021
NJZ001-007-008-PAZ062-090330-
Morris NJ-Sussex NJ-Warren NJ-Northampton PA-
1056 PM EDT Wed Sep 8 2021
...Strong thunderstorms will impact portions of west central Morris,
southwestern Sussex, Warren and eastern Northampton Counties through
1130 PM EDT...
At 1056 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Columbia to Old Orchard. Movement was
northeast at 20 mph.
HAZARD...Wind gusts up to 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...
Easton, Newton, Bethlehem, Forks, Hackettstown, Wilson, Washington,
Blairstown, Hellertown, Nazareth, Bangor, Pen Argyl, Belvidere,
Harmony, Oxford, Alpha, Hope, Belfast, West Easton and Tatamy.
This includes the following highways...
Interstate 78 in Pennsylvania between mile markers 66 and 67, and
between mile markers 71 and 76.
Interstate 78 in New Jersey between mile markers 0 and 1, and near
mile marker 4.
Interstate 80 in New Jersey between mile markers 2 and 23.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
A Severe Thunderstorm Watch remains in effect until midnight EDT for
northern and northwestern New Jersey...and eastern and northeastern
Pennsylvania.
&&
LAT...LON 4123 7470 4080 7477 4077 7486 4078 7490
4074 7494 4058 7538 4089 7525 4093 7522
4095 7515 4097 7512 4098 7513
TIME...MOT...LOC 0256Z 224DEG 19KT 4089 7510 4066 7527
MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH
$$
SFJThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 8, 9:16 PM EDT | Areal Flood Advisory | PHI | Warren | 3 hr |
| Sep 8, 9:16 PM EDT | Special Weather Statement | PHI | Sussex, Warren | 29 min |
| Sep 8, 9:43 PM EDT | Special Weather Statement | PHI | Sussex, Warren | 47 min |
| Sep 8, 10:42 PM EDT | Flash Flood Warning | PHI | Warren | 6 hr |
| Sep 8, 11:27 PM EDT | Severe Thunderstorm Warning | PHI | Hunterdon, Warren | 48 min |
| Sep 8, 11:30 PM EDT | Areal Flood Advisory | PHI | Morris, Sussex | 4 hr |
| Sep 9, 12:07 AM EDT | Special Weather Statement | PHI | Hunterdon, Somerset, Warren | 23 min |
| Sep 9, 12:18 AM EDT | Special Marine Warning | PHI | 57 min | |
| Sep 9, 12:30 AM EDT | Special Weather Statement | PHI | Morris | 30 min |
| Sep 9, 12:41 AM EDT | Special Marine Warning | PHI | 52 min | |
| Sep 9, 2:17 AM EDT | Special Weather Statement | PHI | Ocean | 28 min |
| Sep 9, 2:46 AM EDT | Special Weather Statement | PHI | Atlantic | 29 min |
| Sep 9, 3:14 AM EDT | Special Weather Statement | PHI | Atlantic | 31 min |
| Sep 9, 3:30 AM EDT | Areal Flood Advisory | PHI | Atlantic, Burlington, Cape May, Cumberland | 112 min |
| Sep 9, 4:28 AM EDT | Areal Flood Warning | PHI | Warren | 4 hr |
| Sep 8, 8:47 PM EDT | Special Weather Statement | PHI | Northampton | 28 min |
| Sep 8, 9:12 PM EDT | Special Weather Statement | PHI | Lehigh | 48 min |
| Sep 8, 9:38 PM EDT | Special Weather Statement | PHI | Berks | 52 min |
| Sep 8, 9:46 PM EDT | Special Weather Statement | PHI | Lehigh, Northampton | 44 min |
| Sep 8, 9:48 PM EDT | Flash Flood Warning | PHI | Lehigh, Northampton | 7 hr |
| Sep 8, 9:59 PM EDT | Areal Flood Advisory | PHI | Berks | 3 hr |
| Sep 8, 10:11 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 49 min |
| Sep 8, 10:23 PM EDT | Tornado Warning | PHI | Berks | 22 min |
| Sep 8, 10:27 PM EDT | Special Weather Statement | PHI | Northampton | 33 min |
| Sep 8, 10:47 PM EDT | Areal Flood Advisory | PHI | Carbon, Monroe | 3 hr |
| Sep 8, 10:47 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Lehigh, Montgomery, Northampton | 58 min |
| Sep 8, 11:35 PM EDT | Special Weather Statement | PHI | Chester, Delaware, Montgomery | 40 min |
| Sep 9, 12:08 AM EDT | Special Weather Statement | PHI | Bucks, Delaware, Montgomery, Philadelphia | 37 min |
| Sep 9, 4:26 AM EDT | Areal Flood Warning | PHI | Lehigh, Northampton | 3 hr |
| Sep 9, 12:58 AM EDT | Special Weather Statement | PHI | New Castle | 32 min |
| Sep 9, 1:12 AM EDT | Areal Flood Advisory | PHI | New Castle | 62 min |
| Sep 9, 5:37 AM EDT | Areal Flood Advisory | PHI | Kent, New Castle, Sussex | 3 hr |
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.