Alert archive / New Jersey / Severe Thunderstorm Warnings in 2013
Severe Thunderstorm Warning 93, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 13, 2013, 8:44 AM EDT for 5 counties in New Jersey. It was in force for 61 min. 7 reports 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
- Aug 13, 2013, 8:44 AM EDT (12:44 UTC)
- Expired
- Aug 13, 2013, 9:45 AM EDT
- In force
- 61 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Salem County, NJ
The radar
The Philadelphia radar (KDIX), 44 km from the middle of the area, began a volume at 12:43 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 |
|---|---|---|---|
| Aug 13, 8:45 AM EDT | TSTM WND DMG | Clayton, NJ | TREES AND WIRES DOWN |
| Aug 13, 9:00 AM EDT | TSTM WND DMG | Monroe Twp, NJ | TREES... POWER LINES DOWN...LINES DOWN...7000 PEOPLE WITHOUT POWER |
| Aug 13, 9:13 AM EDT | TSTM WND DMG | Hammonton, NJ | TREES AND WIRES DOWN |
| Aug 13, 9:13 AM EDT | TSTM WND DMG | Shamong Twp, NJ | ROOF BLOWN OFF A BARN. |
| Aug 13, 9:15 AM EDT | TSTM WND DMG | Shamong Twp, NJ | OLD FARM HOUSE ROOF BLOWN OFF AT CORNER OF INDIAN MILLS ROAD AND OAKSHADE |
| Aug 13, 9:22 AM EDT | TSTM WND DMG | Indian Mills, NJ | SEVERAL HOUSES DAMAGED AND TREES UPROOTED |
| Aug 13, 9:45 AM EDT | TSTM WND DMG | Monroe Twp, NJ | TREES... POWER LINES DOWN...LINES DOWN...7000 PEOPLE WITHOUT POWER |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 0.7 hours before the alert went out and 116 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
- 1840 J/kg
- Mixed-layer CIN
- -1 J/kg
- Mixed-layer LCL
- 567 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 129 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 1.3
- Supercell composite
- 7.8
The text
As transmitted, in the capitals the NWS used until 2016.
083
WUUS51 KPHI 131244
SVRPHI
NJC001-005-007-015-033-131345-
/O.NEW.KPHI.SV.W.0093.130813T1244Z-130813T1345Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
844 AM EDT TUE AUG 13 2013
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
SOUTHEASTERN GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
SOUTHERN BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
NORTHWESTERN ATLANTIC COUNTY IN SOUTHERN NEW JERSEY...
EAST CENTRAL SALEM COUNTY IN SOUTHERN NEW JERSEY...
* UNTIL 945 AM EDT
* AT 839 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS. THESE SEVERE STORMS EXTENDED FROM
TURNERSVILLE TO FRANKLINVILLE TO ELMER...MOVING EAST AT 30 MPH.
THESE STORMS ARE CAPABLE OF PRODUCING ONE INCH DIAMETER HAIL.
* SEVERE THUNDERSTORMS WILL BE NEAR...
WILLIAMSTOWN AND SICKLERVILLE AROUND 850 AM EDT...
ATCO AND NEWFIELD AROUND 855 AM EDT...
VICTORY LAKES AND CHESILHURST AROUND 900 AM EDT...
SHAMONG AND HAMMONTON AROUND 920 AM EDT...
WHARTON STATE FOREST AND ELWOOD-MAGNOLIA AROUND 930 AM EDT...
BATSTO AROUND 935 AM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DOPPLER RADAR HAS INDICATED SOME ROTATION WITHIN THIS STORM. WHILE
NOT IMMEDIATELY LIKELY...A TORNADO MAY STILL DEVELOP. IF A TORNADO IS
SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM ON THE LOWEST
FLOOR.
VERY HEAVY RAIN WILL ALSO OCCUR WITH THIS LINE OF SEVERE
THUNDERSTORMS...WHICH COULD FLOOD LOW LYING AREAS QUICKLY AND COVER
ROADS WITH WATER. DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE
ROAD.
&&
LAT...LON 3967 7441 3952 7459 3953 7502 3957 7506
3954 7507 3954 7519 3964 7515 3978 7507
3985 7443 3984 7443 3982 7441
TIME...MOT...LOC 1243Z 266DEG 24KT 3975 7501 3963 7509
3957 7512
$$
FORECASTER: DRAG2 follow-up statements
142
WWUS51 KPHI 131251
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
851 AM EDT TUE AUG 13 2013
NJC033-131300-
/O.CAN.KPHI.SV.W.0093.000000T0000Z-130813T1345Z/
SALEM NJ-
851 AM EDT TUE AUG 13 2013
...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL SALEM COUNTY IS
CANCELLED...
THE STORM THAT PROMPTED THE SEVERE THUNDERSTORM WARNING HAS MOVED OUT
OF THE AREA...THEREFORE THE SEVERE THUNDERSTORM WARNING HAS BEEN
CANCELLED.
LAT...LON 3952 7459 3953 7501 3960 7511 3964 7510
3979 7502 3985 7443 3982 7441 3967 7441
TIME...MOT...LOC 1250Z 266DEG 24KT 3978 7493 3966 7503
3958 7505
$$
NJC001-005-007-015-131345-
/O.CON.KPHI.SV.W.0093.000000T0000Z-130813T1345Z/
CAMDEN NJ-GLOUCESTER NJ-BURLINGTON NJ-ATLANTIC NJ-
851 AM EDT TUE AUG 13 2013
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 AM EDT
FOR NORTHWESTERN ATLANTIC...SOUTHERN BURLINGTON...SOUTHEASTERN
GLOUCESTER AND SOUTHEASTERN CAMDEN COUNTIES...
AT 848 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING ONE INCH
DIAMETER HAIL...AND DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THESE
STORMS WERE LOCATED ALONG A LINE EXTENDING FROM PINE VALLEY TO
CLAYTON TO MALAGA...MOVING EAST AT 30 MPH. THERE WAS A REPORT OF
ESTIMATED WIND TO 60 MPH NEAR GLASSBORO AT 830 AM.
SEVERE THUNDERSTORMS WILL BE NEAR...
WILLIAMSTOWN AND NEWFIELD AROUND 855 AM EDT...
VICTORY LAKES AND CHESILHURST AROUND 900 AM EDT...
COLLINGS LAKES AROUND 910 AM EDT...
FOLSOM AROUND 915 AM EDT...
SHAMONG AND HAMMONTON AROUND 920 AM EDT...
WHARTON STATE FOREST AND ELWOOD-MAGNOLIA AROUND 930 AM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DOPPLER RADAR HAS INDICATED SOME ROTATION WITHIN THIS STORM. WHILE
NOT IMMEDIATELY LIKELY...A TORNADO MAY DEVELOP. IF A TORNADO IS
SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A STURDY
STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WINDS AND LARGE HAIL.
SEEK SHELTER NOW INSIDE A STURDY STRUCTURE...AND STAY AWAY FROM
WINDOWS.
FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS. THIS STORM HAS THE POTENTIAL TO CAUSE SERIOUS
INJURY AND SIGNIFICANT DAMAGE TO PROPERTY.
&&
LAT...LON 3952 7459 3953 7501 3960 7511 3964 7510
3979 7502 3985 7443 3982 7441 3967 7441
TIME...MOT...LOC 1250Z 266DEG 24KT 3978 7493 3966 7503
3958 7505
$$
FORECASTER: DRAG295
WWUS51 KPHI 131318
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
918 AM EDT TUE AUG 13 2013
NJC015-131327-
/O.CAN.KPHI.SV.W.0093.000000T0000Z-130813T1345Z/
GLOUCESTER NJ-
918 AM EDT TUE AUG 13 2013
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN GLOUCESTER COUNTY
IS CANCELLED...
THE STORM THAT PROMPTED THE SEVERE THUNDERSTORM WARNING HAS MOVED OUT
OF THE AREA...THEREFORE THE SEVERE THUNDERSTORM WARNING HAS BEEN
CANCELLED.
LAT...LON 3955 7456 3960 7486 3973 7483 3981 7478
3985 7443 3984 7443 3982 7441 3967 7441
TIME...MOT...LOC 1317Z 266DEG 24KT 3982 7470 3970 7472
3961 7478
$$
NJC001-005-007-131345-
/O.CON.KPHI.SV.W.0093.000000T0000Z-130813T1345Z/
CAMDEN NJ-BURLINGTON NJ-ATLANTIC NJ-
918 AM EDT TUE AUG 13 2013
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 945 AM EDT
FOR NORTH CENTRAL ATLANTIC...SOUTHEASTERN BURLINGTON AND SOUTHEASTERN
CAMDEN COUNTIES...
AT 913 AM EDT...A LINE OF SEVERE THUNDERSTORMS WAS REPORTED CAPABLE
OF PRODUCING ONE INCH DIAMETER HAIL...AND DESTRUCTIVE WINDS IN EXCESS
OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
SHAMONG TO ATSION TO HAMMONTON...MOVING EAST AT 30 MPH.
SEVERE THUNDERSTORMS WILL BE NEAR...
WHARTON STATE FOREST AND ELWOOD-MAGNOLIA AROUND 925 AM EDT...
BATSTO AROUND 930 AM EDT...
CHATSWORTH AROUND 940 AM EDT...
PENN STATE FOREST AND WADING RIVER AROUND 945 AM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
DOPPLER RADAR HAS INDICATED SOME ROTATION WITHIN A COUPLE OF THESE
STORMS. WHILE NOT IMMEDIATELY LIKELY...A TORNADO MAY DEVELOP. IF A
TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY IN A
STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM.
THIS STORM HAS A HISTORY OF PRODUCING DAMAGING WINDS AND LARGE HAIL.
SEEK SHELTER NOW INSIDE A STURDY STRUCTURE...AND STAY AWAY FROM
WINDOWS.
&&
LAT...LON 3955 7456 3960 7486 3973 7483 3981 7478
3985 7443 3984 7443 3982 7441 3967 7441
TIME...MOT...LOC 1317Z 266DEG 24KT 3982 7470 3970 7472
3961 7478
$$
FORECASTER: DRAGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 13, 2:45 AM EDT | Flash Flood Watch | PHI | Burlington, Camden, Gloucester, Hunterdon, Mercer, Middlesex and 6 more | 9 hr |
| Aug 13, 6:23 AM EDT | Severe Thunderstorm Warning | PHI | Salem | 67 min |
| Aug 13, 7:05 AM EDT | Severe Thunderstorm Warning | PHI | Camden, Gloucester, Salem | 40 min |
| Aug 13, 7:11 AM EDT | Special Marine Warning | PHI | 19 min | |
| Aug 13, 7:16 AM EDT | Special Weather Statement | PHI | Camden, Gloucester, Salem | 59 min |
| Aug 13, 7:22 AM EDT | Areal Flood Advisory | PHI | Camden, Gloucester, Salem | 7 hr |
| Aug 13, 7:33 AM EDT | Areal Flood Advisory | PHI | Hunterdon, Mercer, Warren | 7 hr |
| Aug 13, 7:51 AM EDT | Special Marine Warning | PHI | 24 min | |
| Aug 13, 7:54 AM EDT | Flash Flood Warning | PHI | Burlington, Camden, Gloucester, Salem | 8 hr |
| Aug 13, 7:54 AM EDT | Special Weather Statement | PHI | Camden | 66 min |
| Aug 13, 7:57 AM EDT | Severe Thunderstorm Warning | PHI | Gloucester, Salem | 48 min |
| Aug 13, 8:20 AM EDT | Flash Flood Warning | PHI | Hunterdon, Mercer | 8 hr |
| Aug 13, 8:36 AM EDT | Special Weather Statement | PHI | Mercer | 39 min |
| Aug 13, 8:59 AM EDT | Flash Flood Warning | PHI | Atlantic, Burlington, Camden, Gloucester | 7 hr |
| Aug 13, 9:07 AM EDT | Special Weather Statement | PHI | Cumberland, Salem | 38 min |
| Aug 13, 9:11 AM EDT | Special Weather Statement | PHI | Burlington | 49 min |
| Aug 13, 9:22 AM EDT | Severe Thunderstorm Warning | PHI | Burlington, Ocean | 38 min |
| Aug 13, 9:26 AM EDT | Special Weather Statement | PHI | Atlantic | 34 min |
| Aug 13, 9:34 AM EDT | Special Marine Warning | PHI | 56 min | |
| Aug 13, 9:42 AM EDT | Flash Flood Warning | PHI | Atlantic, Burlington, Cape May, Cumberland, Hunterdon, Middlesex and 4 more | 5 hr |
| Aug 13, 9:43 AM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Ocean | 47 min |
| Aug 13, 9:49 AM EDT | Special Weather Statement | PHI | Atlantic, Cumberland | 56 min |
| Aug 13, 10:01 AM EDT | Special Weather Statement | PHI | Monmouth | 29 min |
| Aug 13, 10:04 AM EDT | Special Weather Statement | PHI | Ocean | 41 min |
| Aug 13, 10:12 AM EDT | Tornado Warning | PHI | Ocean | 33 min |
| Aug 13, 10:32 AM EDT | Severe Thunderstorm Warning | PHI | Ocean | 28 min |
| Aug 13, 10:39 AM EDT | Special Marine Warning | PHI | 66 min | |
| Aug 13, 10:51 AM EDT | Special Weather Statement | PHI | Atlantic | 54 min |
| Aug 13, 11:51 AM EDT | Special Marine Warning | PHI | 84 min | |
| Aug 13, 1:10 PM EDT | Special Marine Warning | PHI | 65 min | |
| Aug 13, 2:18 PM EDT | Areal Flood Warning | PHI | Burlington, Camden, Gloucester, Salem | 9 hr |
| Aug 13, 3:30 PM EDT | Small Craft Advisory | PHI | 24 hr |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2013Every severe thunderstorm warning in 2013
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.