Alert archive / New Jersey / Severe Thunderstorm Warnings in 2018
Severe Thunderstorm Warning 97, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Sep 7, 2018, 7:19 PM EDT for Camden County, Gloucester County, New Jersey. It was in force for 56 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 7, 2018, 7:19 PM EDT (23:19 UTC)
- Expired
- Sep 7, 2018, 8:15 PM EDT
- In force
- 56 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Camden County, NJ, Gloucester County, NJ
The radar
The Philadelphia radar (KDIX), 48 km from the middle of the area, began a volume at 23:21 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 7, 7:25 PM EDT | TSTM WND DMG | 2 Wnw Gloucester Twp, NJ | SEVERAL TREE LIMBS DOWN NEAR BLACKWOOD. 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
Wallops Is Stn, VA (KWAL), launched 12:00Z, 11.3 hours before the alert went out and 208 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
- 1722 J/kg
- Mixed-layer CIN
- -28 J/kg
- Mixed-layer LCL
- 884 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- -19 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
626
WUUS51 KPHI 072319
SVRPHI
NJC007-015-080015-
/O.NEW.KPHI.SV.W.0097.180907T2319Z-180908T0015Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
719 PM EDT FRI SEP 7 2018
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Camden County in southern New Jersey...
Northeastern Gloucester County in southern New Jersey...
* Until 815 PM EDT.
* At 718 PM EDT, a severe thunderstorm was located over Turnersville,
or 7 miles south of Gloucester City, moving southeast at 10 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
* Locations impacted include...
Voorhees, Glassboro, Lindenwold, Bellmawr, Pitman, Clayton, Berlin,
Magnolia, Woodbury Heights, Chesilhurst, Sicklerville, Echelon,
Atco, Williamstown, Turnersville, Monroe Township, Ashland,
Springdale, Haddonfield and Pine Hill.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
In addition to damaging winds, frequent cloud to ground lightning is
occurring with this storm. Move indoors immediately. Remember, if
you can hear thunder, you are close enough to be struck by lightning.
&&
LAT...LON 3958 7492 3976 7518 3989 7509 3986 7492
3980 7491 3978 7489 3979 7483 3979 7481
3977 7479 3976 7479
TIME...MOT...LOC 2318Z 293DEG 8KT 3979 7509
HAIL...<.75IN
WIND...60MPH
$$
Gorse2 follow-up statements
016
WWUS51 KPHI 072336
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
736 PM EDT FRI SEP 7 2018
NJC007-015-080015-
/O.CON.KPHI.SV.W.0097.000000T0000Z-180908T0015Z/
Camden NJ-Gloucester NJ-
736 PM EDT FRI SEP 7 2018
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 815 PM EDT
FOR CENTRAL CAMDEN AND EAST CENTRAL GLOUCESTER COUNTIES...
At 735 PM EDT, a severe thunderstorm was located over Turnersville,
or 9 miles southeast of Gloucester City, moving east at 10 mph.
HAZARD...60 mph wind gusts and penny size hail.
SOURCE...Radar indicated.
IMPACT...Damage to roofs, siding, trees, and power lines is
possible.
Locations impacted include...
Voorhees, Glassboro, Lindenwold, Pitman, Berlin, Chesilhurst, Atco,
Sicklerville, Williamstown, Echelon, Turnersville, Monroe Township,
Springdale, Ashland, Pine Hill, Stratford, Somerdale, Clementon,
Gibbsboro and Laurel Springs.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Remain alert for a possible tornado! Tornadoes can develop quickly
from severe thunderstorms. If you spot a tornado go at once into the
basement or small central room in a sturdy structure.
For your protection move to an interior room on the lowest floor of a
building.
In addition to hail and damaging winds, frequent cloud to ground
lightning is occurring with this storm. Move indoors immediately.
Remember, if you can hear thunder, you are close enough to be struck
by lightning.
&&
LAT...LON 3958 7492 3974 7514 3987 7499 3986 7492
3980 7491 3978 7489 3979 7483 3979 7481
3977 7479 3976 7479
TIME...MOT...LOC 2335Z 292DEG 10KT 3977 7504
TORNADO...POSSIBLE
HAIL...0.75IN
WIND...60MPH
$$
Gorse362
WWUS51 KPHI 080007
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
807 PM EDT FRI SEP 7 2018
NJC007-015-080017-
/O.EXP.KPHI.SV.W.0097.000000T0000Z-180908T0015Z/
Camden NJ-Gloucester NJ-
807 PM EDT FRI SEP 7 2018
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CAMDEN AND EAST
CENTRAL GLOUCESTER COUNTIES WILL EXPIRE AT 815 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.
LAT...LON 3958 7492 3974 7514 3987 7499 3986 7492
3980 7491 3978 7489 3979 7483 3979 7481
3977 7479 3976 7479
TIME...MOT...LOC 0007Z 293DEG 8KT 3974 7496
$$
GorseThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 7, 4:22 AM EDT | Small Craft Advisory | PHI | 35 hr | |
| Sep 7, 12:59 PM EDT | Special Weather Statement | PHI | Cape May | 46 min |
| Sep 7, 1:26 PM EDT | Severe Thunderstorm Warning | PHI | Cape May | 31 min |
| Sep 7, 1:29 PM EDT | Areal Flood Advisory | PHI | Cape May | 3 hr |
| Sep 7, 2:20 PM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cape May | 30 min |
| Sep 7, 2:53 PM EDT | Special Weather Statement | PHI | Atlantic | 37 min |
| Sep 7, 3:25 PM EDT | Special Weather Statement | PHI | Atlantic | 50 min |
| Sep 7, 3:36 PM EDT | Gale Watch | PHI | 24 hr | |
| Sep 7, 5:27 PM EDT | Special Marine Warning | PHI | 46 min | |
| Sep 7, 6:32 PM EDT | Special Weather Statement | PHI | Camden | 43 min |
| Sep 7, 6:41 PM EDT | Flash Flood Warning | PHI | Camden, Gloucester | 4 hr |
| Sep 7, 7:08 PM EDT | Special Weather Statement | PHI | Camden | 52 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2018Every severe thunderstorm warning in 2018
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.