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 10, 2021, 5:30 PM EDT for Warren County, New Jersey. It was in force for 30 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 10, 2021, 5:30 PM EDT (21:30 UTC)
- Expired
- Aug 10, 2021, 6:00 PM EDT
- In force
- 30 min
- Issued by
- NWS Philadelphia/Mount Holly
- Hail
- 0.25 in
- Wind
- 40
County Warren County, NJ
The radar
The Philadelphia radar (KDIX), 112 km from the middle of the area, began a volume at 21:32 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, 9.5 hours before the alert went out and 175 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
- 73 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 635 m above ground
- 0-6 km bulk shear
- 12 kt
- 0-1 km storm-relative helicity
- 74 m²/s²
- 0-3 km storm-relative helicity
- 103 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
612
WWUS81 KPHI 102130
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
530 PM EDT Tue Aug 10 2021
NJZ001-007>010-PAZ055-062-102200-
Hunterdon NJ-Morris NJ-Sussex NJ-Somerset NJ-Warren NJ-Monroe PA-
Northampton PA-
530 PM EDT Tue Aug 10 2021
...Strong thunderstorms will impact portions of northern Hunterdon,
southwestern Morris, southwestern Sussex, Warren, northwestern
Somerset, southeastern Monroe and northeastern Northampton Counties
through 600 PM EDT...
At 530 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Delaware Water Gap to near Clinton.
Movement was east at 30 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...
Bridgewater, East Stroudsburg, Hackettstown, Washington, Blairstown,
Bangor, High Bridge, Clinton, Belvidere, Harmony, Peapack And
Gladstone, Oxford, Hope, Glen Gardner, Chester, Hampton, Lebanon,
East Bangor, Califon and Bloomsbury.
This includes the following highways...
Interstate 78 in New Jersey between mile markers 5 and 32.
Interstate 80 in Pennsylvania between mile markers 307 and 314.
Interstate 80 in New Jersey between mile markers 0 and 21.
Interstate 287 in New Jersey between mile markers 16 and 23.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4108 7488 4058 7458 4060 7507 4099 7531
TIME...MOT...LOC 2130Z 264DEG 25KT 4094 7517 4062 7497
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 |
|---|---|---|---|---|
| Aug 10, 1:02 AM EDT | Special Weather Statement | PHI | Burlington | 28 min |
| Aug 10, 3:33 AM EDT | Excessive Heat Warning | PHI | Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 5 more | 4 days |
| Aug 10, 3:33 AM EDT | Heat Advisory | PHI | Atlantic, Cape May, Cumberland, Monmouth, Ocean, Salem and 2 more | 4 days |
| Aug 10, 3:54 AM EDT | Areal Flood Advisory | PHI | Atlantic | 80 min |
| Aug 10, 4:59 AM EDT | Areal Flood Advisory | PHI | Burlington | 60 min |
| Aug 10, 5:58 AM EDT | Flash Flood Warning | PHI | Burlington, Mercer | 2 hr |
| Aug 10, 2:07 PM EDT | Special Weather Statement | PHI | Salem | 38 min |
| Aug 10, 4:52 PM EDT | Special Weather Statement | PHI | Monmouth | 23 min |
| Aug 10, 4:54 PM EDT | Special Marine Warning | PHI | 26 min | |
| Aug 10, 5:05 PM EDT | Special Weather Statement | PHI | Somerset, Warren | 25 min |
| Aug 10, 5:09 PM EDT | Severe Thunderstorm Warning | PHI | Burlington, Hunterdon, Mercer, Somerset, Warren | 51 min |
| Aug 10, 5:58 PM EDT | Special Weather Statement | PHI | Mercer, Middlesex, Morris, Somerset, Warren | 32 min |
| Aug 10, 6:27 PM EDT | Special Weather Statement | PHI | Burlington, Mercer, Middlesex, Monmouth, Morris | 33 min |
| Aug 10, 6:59 PM EDT | Special Weather Statement | PHI | Middlesex, Monmouth | 31 min |
| Aug 10, 7:09 PM EDT | Special Marine Warning | PHI | 66 min | |
| Aug 10, 7:27 PM EDT | Special Weather Statement | PHI | Monmouth | 33 min |
| Aug 9, 10:10 PM EDT | Areal Flood Advisory | PHI | Carbon | 3 hr |
| Aug 10, 3:06 PM EDT | Special Weather Statement | PHI | Berks | 24 min |
| Aug 10, 3:33 PM EDT | Special Weather Statement | PHI | Berks | 27 min |
| Aug 10, 3:52 PM EDT | Special Weather Statement | PHI | Berks, Carbon, Lehigh | 23 min |
| Aug 10, 4:01 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Carbon, Chester, Lehigh, Montgomery, Northampton | 44 min |
| Aug 10, 4:18 PM EDT | Areal Flood Advisory | PHI | Berks, Carbon, Lehigh | 3 hr |
| Aug 10, 4:33 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Bucks, Carbon, Chester, Lehigh, Monroe and 2 more | 42 min |
| Aug 10, 5:11 PM EDT | Special Weather Statement | PHI | Chester, Montgomery, Philadelphia | 34 min |
| Aug 10, 5:40 PM EDT | Special Weather Statement | PHI | Chester | 35 min |
| Aug 10, 6:36 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester | 39 min |
| Aug 10, 7:10 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester, Montgomery | 65 min |
| Aug 10, 7:54 PM EDT | Severe Thunderstorm Warning | PHI | Chester | 51 min |
| Aug 10, 7:12 PM EDT | Special Weather Statement | PHI | Kent, Queen Anne's | 33 min |
| Aug 10, 7:42 PM EDT | Special Weather Statement | PHI | Kent, Queen Anne's, Talbot | 33 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.