Alert archive / New Jersey / Severe Thunderstorm Warnings in 2023
Severe Thunderstorm Warning 183, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jul 9, 2023, 5:35 PM EDT for Camden County, Gloucester County, Salem County, New Jersey; Philadelphia County, Pennsylvania. It was in force for 25 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
- Jul 9, 2023, 5:35 PM EDT (21:35 UTC)
- Expired
- Jul 9, 2023, 6:00 PM EDT
- In force
- 25 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Tornado
- Possible
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Camden County, NJ, Gloucester County, NJ, Salem County, NJ, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 72 km from the middle of the area, began a volume at 21:36 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 9, 11:06 AM EDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 9.6 hours before the alert went out and 207 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
- 1082 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 603 m above ground
- 0-6 km bulk shear
- 21 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 48 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.9
The text
As transmitted.
992
WUUS51 KPHI 092135
SVRPHI
NJC007-015-033-PAC101-092200-
/O.NEW.KPHI.SV.W.0183.230709T2135Z-230709T2200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
535 PM EDT Sun Jul 9 2023
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
North central Salem County in southern New Jersey...
West central Camden County in southern New Jersey...
Northwestern Gloucester County in southern New Jersey...
South central Philadelphia County in southeastern Pennsylvania...
* Until 600 PM EDT.
* At 535 PM EDT, a severe thunderstorm was located over Swedesboro,
or 13 miles east of Wilmington, moving northeast at 35 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Philadelphia, Camden, Gloucester City, Deptford, West Deptford,
Glassboro, Lindenwold, Bellmawr, Woodbury, Pitman, Paulsboro,
Westville, Woodstown, Woodbury Heights, National Park, Swedesboro,
Brooklawn, Audubon Park, Beckett and Mullica Hill.
This includes the following highways...
New Jersey Turnpike between exits 2 and 3.
Interstate 95 in Pennsylvania between mile markers 17 and 18.
Interstate 76 in Pennsylvania near mile marker 351.
Interstate 76 in New Jersey between mile markers 0 and 3.
Interstate 295 in New Jersey between mile markers 8 and 29.
Interstate 676 in New Jersey between mile markers 0 and 2.
Atlantic City Expressway between mile markers 40 and 44.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 3963 7531 3977 7542 3985 7526 3986 7522
3988 7521 3993 7511 3974 7496
TIME...MOT...LOC 2135Z 235DEG 32KT 3975 7528
TORNADO...POSSIBLE
HAIL THREAT...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
WIND THREAT...RADAR INDICATED
MAX WIND GUST...60 MPH
$$
MLB1 follow-up statement
717
WWUS51 KPHI 092155
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
555 PM EDT Sun Jul 9 2023
NJC007-015-033-PAC101-092205-
/O.EXP.KPHI.SV.W.0183.000000T0000Z-230709T2200Z/
Salem NJ-Camden NJ-Gloucester NJ-Philadelphia PA-
555 PM EDT Sun Jul 9 2023
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL SALEM...WEST
CENTRAL CAMDEN...NORTHWESTERN GLOUCESTER AND SOUTH CENTRAL
PHILADELPHIA COUNTIES WILL EXPIRE AT 600 PM EDT...
The storm which prompted the warning has weakened below severe
limits, and no longer poses an immediate threat to life or property.
Therefore, the warning will be allowed to expire. However gusty
winds and heavy rain are still possible with this thunderstorm.
A Severe Thunderstorm Watch remains in effect until 800 PM EDT for
southern New Jersey...and southeastern Pennsylvania.
LAT...LON 3963 7531 3977 7542 3985 7526 3986 7522
3988 7521 3993 7511 3974 7496
TIME...MOT...LOC 2155Z 235DEG 32KT 3984 7511
$$
StaarmannThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 9, 12:37 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Warren | 2 hr |
| Jul 9, 1:02 PM EDT | Flash Flood Warning | PHI | Hunterdon, Warren | 8 hr |
| Jul 9, 1:57 PM EDT | Areal Flood Advisory | PHI | Morris, Sussex, Warren | 65 min |
| Jul 9, 2:05 PM EDT | Flash Flood Warning | PHI | Sussex | 6 hr |
| Jul 9, 2:30 PM EDT | Areal Flood Advisory | PHI | Hunterdon, Morris, Warren | 4 min |
| Jul 9, 2:34 PM EDT | Flash Flood Warning | PHI | Hunterdon, Morris, Somerset, Warren | 6 hr |
| Jul 9, 2:59 PM EDT | Special Weather Statement | PHI | Somerset | 31 min |
| Jul 9, 3:00 PM EDT | Flash Flood Warning | PHI | Morris, Somerset, Sussex, Warren | 6 hr |
| Jul 9, 4:12 PM EDT | Special Weather Statement | PHI | Somerset | 33 min |
| Jul 9, 4:34 PM EDT | Special Marine Warning | PHI | 86 min | |
| Jul 9, 4:57 PM EDT | Special Marine Warning | PHI | 93 min | |
| Jul 9, 4:58 PM EDT | Special Weather Statement | PHI | Cumberland, Salem | 47 min |
| Jul 9, 5:09 PM EDT | Flash Flood Warning | PHI | Salem | 4 hr |
| Jul 9, 5:10 PM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 50 min |
| Jul 9, 5:15 PM EDT | Special Weather Statement | PHI | Hunterdon, Warren | 30 min |
| Jul 9, 5:49 PM EDT | Special Weather Statement | PHI | Cumberland | 26 min |
| Jul 9, 5:59 PM EDT | Flash Flood Warning | PHI | Hunterdon, Mercer | 4 hr |
| Jul 9, 5:59 PM EDT | Special Weather Statement | PHI | Cape May | 46 min |
| Jul 9, 6:33 PM EDT | Special Marine Warning | PHI | 87 min | |
| Jul 9, 6:52 PM EDT | Flash Flood Warning | PHI | Hunterdon, Mercer, Middlesex, Morris, Somerset | 4 hr |
| Jul 9, 7:11 PM EDT | Areal Flood Advisory | PHI | Burlington, Camden, Gloucester, Mercer, Salem | 3 hr |
| Jul 9, 7:16 PM EDT | Special Weather Statement | PHI | Burlington | 29 min |
| Jul 9, 7:21 PM EDT | Special Marine Warning | PHI | 114 min | |
| Jul 9, 7:29 PM EDT | River Flood Warning | PHI | Hunterdon, Somerset | 10 hr |
| Jul 9, 11:00 AM EDT | Special Weather Statement | PHI | Carbon | 30 min |
| Jul 9, 11:33 AM EDT | Flash Flood Warning | PHI | Chester, Delaware, Montgomery | 8 hr |
| Jul 9, 11:47 AM EDT | Special Weather Statement | PHI | Monroe | 43 min |
| Jul 9, 11:49 AM EDT | Special Weather Statement | PHI | Montgomery | 41 min |
| Jul 9, 11:54 AM EDT | Areal Flood Advisory | PHI | Berks, Bucks, Lehigh, Montgomery | 33 min |
| Jul 9, 12:14 PM EDT | Special Weather Statement | PHI | Bucks | 46 min |
| Jul 9, 12:15 PM EDT | Special Weather Statement | PHI | Monroe | 30 min |
| Jul 9, 12:22 PM EDT | Special Weather Statement | PHI | Lebanon | 38 min |
| Jul 9, 12:27 PM EDT | Flash Flood Warning | PHI | Berks, Bucks, Lehigh, Montgomery | 8 hr |
| Jul 9, 12:43 PM EDT | Areal Flood Advisory | PHI | Berks | 33 min |
| Jul 9, 12:51 PM EDT | Special Weather Statement | PHI | Northampton | 24 min |
| Jul 9, 12:57 PM EDT | Areal Flood Advisory | PHI | Carbon, Monroe | 6 hr |
| Jul 9, 1:16 PM EDT | Flash Flood Warning | PHI | Berks | 6 hr |
| Jul 9, 1:17 PM EDT | Special Weather Statement | PHI | Berks | 28 min |
| Jul 9, 1:32 PM EDT | Areal Flood Advisory | PHI | Carbon, Lehigh, Monroe, Northampton | 4 hr |
| Jul 9, 2:16 PM EDT | Areal Flood Advisory | PHI | Berks, Lehigh | 30 min |
| Jul 9, 2:41 PM EDT | Flash Flood Warning | PHI | Berks | 4 hr |
| Jul 9, 2:46 PM EDT | Flash Flood Warning | PHI | Berks, Lehigh, Northampton | 6 hr |
| Jul 9, 3:01 PM EDT | Special Weather Statement | PHI | Berks | 29 min |
| Jul 9, 3:03 PM EDT | Special Weather Statement | PHI | Chester | 27 min |
| Jul 9, 3:15 PM EDT | Severe Thunderstorm Warning | PHI | Berks | 30 min |
| Jul 9, 3:20 PM EDT | Special Weather Statement | PHI | Berks | 25 min |
| Jul 9, 3:27 PM EDT | Severe Thunderstorm Warning | PHI | Berks, Chester | 33 min |
| Jul 9, 3:41 PM EDT | Special Weather Statement | PHI | Berks | 34 min |
| Jul 9, 3:51 PM EDT | Flash Flood Warning | PHI | Berks, Chester, Lehigh, Montgomery | 6 hr |
| Jul 9, 3:59 PM EDT | Special Weather Statement | PHI | Chester | 31 min |
| Jul 9, 4:03 PM EDT | Severe Thunderstorm Warning | PHI | Montgomery | 27 min |
| Jul 9, 4:19 PM EDT | Special Weather Statement | PHI | Chester | 26 min |
| Jul 9, 4:31 PM EDT | Flash Flood Warning | PHI | Chester, Montgomery | 4 hr |
| Jul 9, 5:12 PM EDT | Flash Flood Warning | PHI | Bucks, Montgomery | 5 hr |
| Jul 9, 5:31 PM EDT | Flash Flood Warning | PHI | Chester, Delaware, Montgomery, Philadelphia | 4 hr |
| Jul 9, 6:05 PM EDT | Special Weather Statement | PHI | Bucks | 25 min |
| Jul 9, 7:04 PM EDT | Areal Flood Warning | PHI | Berks | 9 hr |
| Jul 9, 7:27 PM EDT | River Flood Warning | PHI | Chester | 4 hr |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2023Severe Thunderstorm Warnings in Pennsylvania, 2023Every severe thunderstorm warning in 2023
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.