Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 1, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Feb 25, 2011, 1:04 PM EST for Burlington County, Camden County, Gloucester County, New Jersey; Delaware County, Philadelphia County, Pennsylvania. It was in force for 56 min. 3 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
- Feb 25, 2011, 1:04 PM EST (18:04 UTC)
- Expired
- Feb 25, 2011, 2:00 PM EST
- In force
- 56 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Burlington County, NJ, Camden County, NJ, Gloucester County, NJ, Delaware County, PA, Philadelphia County, PA
The radar
The Philadelphia radar (KDIX), 41 km from the middle of the area, began a volume at 18:05 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 |
|---|---|---|---|
| Feb 25, 1:15 PM EST | TSTM WND DMG | Woodbury, NJ | TREES DOWN. |
| Feb 25, 1:20 PM EST | TSTM WND DMG | Westampton Twp, NJ | LARGE TREE KNOCKED DOWN |
| Feb 25, 1:56 PM EST | TSTM WND DMG | Audubon, NJ | TREE FELL INTO A TRAFFIC LIGHT WHICH THEN TOOK DOWN POWER LINES. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Feb 25, 12:19 PM EST | Severe Thunderstorm Watch | SPC | 3 hr |
The nearest sounding before it
Brookhaven, NY (KOKX), launched 12:00Z, 6.1 hours before the alert went out and 202 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 446 m above ground
- 0-6 km bulk shear
- 71 kt
- 0-1 km storm-relative helicity
- 464 m²/s²
- 0-3 km storm-relative helicity
- 723 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
953
WUUS51 KPHI 251804
SVRPHI
NJC005-007-015-PAC045-101-251900-
/O.NEW.KPHI.SV.W.0001.110225T1804Z-110225T1900Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
104 PM EST FRI FEB 25 2011
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN DELAWARE COUNTY IN SOUTHEAST PENNSYLVANIA...
SOUTHERN PHILADELPHIA COUNTY IN SOUTHEAST PENNSYLVANIA...
THIS INCLUDES THE CITY OF PHILADELPHIA...
CENTRAL BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
NORTHERN CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
THIS INCLUDES THE CITY OF CAMDEN...
NORTHERN GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
* UNTIL 200 PM EST
* AT 100 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM TACONY TO YEADON TO CHESTER...OR ALONG A LINE EXTENDING FROM
PHILADELPHIA TO 7 MILES WEST OF CAMDEN TO 10 MILES NORTHEAST OF
WILMINGTON...AND MOVING EAST AT 50 MPH.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS LINE OF HEAVY SHOWERS AND THUNDERSTORMS MAY CONTAIN LITTLE OR
NO LIGHTNING. DO NOT WAIT FOR THUNDER BEFORE TAKING COVER. SEEK
SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 PM EST FRIDAY
AFTERNOON FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW
JERSEY AND SOUTHEAST PENNSYLVANIA.
&&
LAT...LON 4003 7489 4006 7457 3985 7445 3972 7459
3973 7478 3978 7541 3992 7534 4003 7510
TIME...MOT...LOC 1802Z 270DEG 45KT 4006 7504 3992 7521
3980 7535
$$
GORSE1 follow-up statement
072
WWUS51 KPHI 251825
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
125 PM EST FRI FEB 25 2011
PAC045-101-251833-
/O.CAN.KPHI.SV.W.0001.000000T0000Z-110225T1900Z/
DELAWARE PA-PHILADELPHIA PA-
125 PM EST FRI FEB 25 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN PHILADELPHIA AND
SOUTHEASTERN DELAWARE COUNTIES IS CANCELLED...
THE LINE OF HEAVY SHOWERS AND THUNDERSTORMS HAS SHIFTED EAST OF THE
AREA, THEREFORE THE WARNING HAS BEEN CANCELLED.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 PM EST FRIDAY
AFTERNOON FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW
JERSEY AND SOUTHEAST PENNSYLVANIA.
LAT...LON 3989 7513 4003 7489 4006 7457 3985 7445
3972 7459 3973 7478 3978 7541
TIME...MOT...LOC 1823Z 270DEG 45KT 4006 7470 3992 7487
3980 7501
$$
NJC005-007-015-251900-
/O.CON.KPHI.SV.W.0001.000000T0000Z-110225T1900Z/
CAMDEN NJ-GLOUCESTER NJ-BURLINGTON NJ-
125 PM EST FRI FEB 25 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 200 PM EST
FOR CENTRAL BURLINGTON...NORTHWESTERN GLOUCESTER AND NORTHERN CAMDEN
COUNTIES...
AT 122 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM JOBSTOWN TO MOUNT LAUREL TO LAUREL SPRINGS...OR ALONG
A LINE EXTENDING FROM 12 MILES SOUTH OF TRENTON TO 12 MILES EAST OF
CAMDEN TO 11 MILES SOUTHEAST OF CAMDEN...MOVING EAST AT 50 MPH.
THE DAMAGING WINDS CAN OCCUR ANYWHERE ALONG THIS LINE AS IT RACES
ACROSS THE AREA.
OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
CLEMENTON...PINE HILL...PINE VALLEY...BERLIN...MEDFORD...MARLTON
LAKES...WRIGHTSTOWN...PEMBERTON...ATCO...MCGUIRE AFB...MEDFORD
LAKES...PEMBERTON HEIGHTS...FORT DIX...LEISURETOWNE...BROWNS MILLS...
TABERNACLE...ATSION...COUNTRY LAKE ESTATES...SHAMONG...PRESIDENTIAL
LAKES...WHARTON STATE FOREST AND CHATSWORTH
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS LINE OF HEAVY SHOWERS AND THUNDERSTORMS MAY CONTAIN LITTLE OR
NO LIGHTNING. DO NOT WAIT FOR THUNDER BEFORE TAKING COVER. SEEK
SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 PM EST FRIDAY
AFTERNOON FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW
JERSEY AND SOUTHEAST PENNSYLVANIA.
&&
LAT...LON 3989 7513 4003 7489 4006 7457 3985 7445
3972 7459 3973 7478 3978 7541
TIME...MOT...LOC 1823Z 270DEG 45KT 4006 7470 3992 7487
3980 7501
$$
GORSEThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 25, 4:56 AM EST | Freezing Rain Advisory | PHI | Sussex | 5 hr |
| Feb 25, 7:53 AM EST | Special Weather Statement | PHI | Atlantic, Cape May, Cumberland | 82 min |
| Feb 25, 9:15 AM EST | Special Weather Statement | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Gloucester and 3 more | 90 min |
| Feb 25, 12:44 PM EST | Special Weather Statement | PHI | Burlington, Camden, Gloucester, Mercer, Middlesex, Salem and 1 more | 61 min |
| Feb 25, 1:11 PM EST | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Salem | 64 min |
| Feb 25, 1:16 PM EST | Severe Thunderstorm Warning | PHI | Burlington, Mercer, Middlesex, Monmouth, Ocean | 59 min |
| Feb 25, 1:23 PM EST | Special Marine Warning | PHI | 67 min | |
| Feb 25, 1:25 PM EST | Special Marine Warning | PHI | 65 min | |
| Feb 25, 1:48 PM EST | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Ocean and 1 more | 57 min |
| Feb 25, 1:57 PM EST | Special Marine Warning | PHI | 63 min | |
| Feb 25, 2:09 PM EST | Severe Thunderstorm Warning | PHI | Atlantic, Cape May, Cumberland | 51 min |
| Feb 25, 2:16 PM EST | Special Marine Warning | PHI | 89 min | |
| Feb 25, 3:39 PM EST | Special Marine Warning | PHI | 41 min | |
| Feb 25, 12:11 PM EST | Special Weather Statement | PHI | Bucks, Chester, Delaware, Montgomery, Philadelphia | 64 min |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2011Severe Thunderstorm Warnings in Pennsylvania, 2011Every severe thunderstorm warning in 2011
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.