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 9, 2021, 6:10 PM EDT for Burlington County, New Jersey; Philadelphia County, Pennsylvania. It was in force for 35 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 9, 2021, 6:10 PM EDT (22:10 UTC)
- Expired
- Aug 9, 2021, 6:45 PM EDT
- In force
- 35 min
- Issued by
- NWS Philadelphia/Mount Holly
- Hail
- 0.25 in
- Wind
- 40
Counties Burlington County, NJ, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 46 km from the middle of the area, began a volume at 22:11 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, 10.2 hours before the alert went out and 200 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
- 12 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 473 m above ground
- 0-6 km bulk shear
- 14 kt
- 0-1 km storm-relative helicity
- -2 m²/s²
- 0-3 km storm-relative helicity
- 10 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
756
WWUS81 KPHI 092210
SPSPHI
Special Weather Statement
National Weather Service Mount Holly NJ
610 PM EDT Mon Aug 9 2021
NJZ018-019-027-PAZ071-104-106-092245-
Northwestern Burlington NJ-Camden NJ-Southeastern Burlington NJ-
Lower Bucks PA-Eastern Montgomery PA-Philadelphia PA-
610 PM EDT Mon Aug 9 2021
...Strong thunderstorms will impact portions of central Camden,
northern Burlington, southeastern Montgomery, south central Bucks and
central Philadelphia Counties through 645 PM EDT...
At 610 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from Wissinoming to near Evesham. Movement was
northeast at 10 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...
Philadelphia, Camden, Cherry Hill, Bensalem, Evesham, Mount Laurel,
Willingboro, Voorhees, Medford, Lumberton, Burlington, Mount Holly,
Riverside, Palmyra, Tabernacle, Jenkintown, Beverly, Rockledge,
Abington and Bryn Athyn.
This includes the following highways...
New Jersey Turnpike between exits 4 and 5.
Pennsylvania Turnpike between mile markers 345 and 352.
Interstate 95 in Pennsylvania between mile markers 22 and 38.
Interstate 76 in Pennsylvania between mile markers 339 and 341.
Interstate 295 in New Jersey between mile markers 32 and 47.
Interstate 676 in New Jersey between mile markers 3 and 4.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
If outdoors, consider seeking shelter inside a building.
&&
LAT...LON 4020 7505 3985 7454 3976 7485 4001 7523
TIME...MOT...LOC 2210Z 236DEG 11KT 4001 7509 3985 7485
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 9, 3:43 PM EDT | Excessive Heat Watch | PHI | Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 4 more | 12 hr |
| Aug 9, 4:36 PM EDT | Areal Flood Advisory | PHI | Atlantic, Cape May, Cumberland, Gloucester, Salem | 104 min |
| Aug 9, 4:45 PM EDT | Special Weather Statement | PHI | Atlantic | 30 min |
| Aug 9, 5:40 PM EDT | Areal Flood Advisory | PHI | Camden, Gloucester | 82 min |
| Aug 9, 6:37 PM EDT | Special Weather Statement | PHI | Mercer | 38 min |
| Aug 9, 5:12 PM EDT | Areal Flood Advisory | PHI | Chester, Delaware | 85 min |
| Aug 9, 5:34 PM EDT | Special Weather Statement | PHI | Philadelphia | 26 min |
| Aug 9, 6:24 PM EDT | Special Weather Statement | PHI | Lehigh | 36 min |
| Aug 9, 6:29 PM EDT | Areal Flood Advisory | PHI | Berks, Montgomery | 70 min |
| Aug 9, 6:49 PM EDT | Special Weather Statement | PHI | Montgomery | 26 min |
| Aug 9, 7:14 PM EDT | Special Weather Statement | PHI | Carbon | 31 min |
| Aug 9, 2:10 PM EDT | Special Weather Statement | PHI | Sussex | 50 min |
| Aug 9, 2:41 PM EDT | Areal Flood Advisory | PHI | Kent, New Castle, Sussex | 3 hr |
| Aug 9, 3:01 PM EDT | Flash Flood Warning | PHI | Kent, Sussex | 2 hr |
| Aug 9, 4:35 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 40 min |
| Aug 9, 4:59 PM EDT | Flash Flood Warning | PHI | Kent | 79 min |
| Aug 9, 5:12 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 20 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.