Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 2, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Feb 25, 2011, 1:11 PM EST for New Castle County, Delaware; 6 counties in New Jersey. It was in force for 64 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
- Feb 25, 2011, 1:11 PM EST (18:11 UTC)
- Expired
- Feb 25, 2011, 2:15 PM EST
- In force
- 64 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties New Castle County, DE, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cumberland County, NJ, Gloucester County, NJ, Salem County, NJ
The radar
The Dover AFB radar (KDOX), 74 km from the middle of the area, began a volume at 18:13 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, 1:25 PM EST | TSTM WND DMG | Middletown, DE | WIRES DOWN AND POWER OUTAGES |
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
Wallops Is Stn, VA (KWAL), launched 12:00Z, 6.2 hours before the alert went out and 174 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
- 514 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 468 m²/s²
- 0-3 km storm-relative helicity
- 449 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
861
WUUS51 KPHI 251811
SVRPHI
DEC003-NJC001-005-007-011-015-033-251915-
/O.NEW.KPHI.SV.W.0002.110225T1811Z-110225T1915Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
111 PM EST FRI FEB 25 2011
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CENTRAL NEW CASTLE COUNTY IN NORTHERN DELAWARE...
THIS INCLUDES THE CITIES OF...WILMINGTON...MIDDLETOWN...
WESTERN ATLANTIC COUNTY IN SOUTHERN NEW JERSEY...
SOUTH CENTRAL BURLINGTON COUNTY IN SOUTHERN NEW JERSEY...
SOUTHEASTERN CAMDEN COUNTY IN SOUTHERN NEW JERSEY...
NORTHERN CUMBERLAND COUNTY IN SOUTHERN NEW JERSEY...
THIS INCLUDES THE CITIES OF...VINELAND...MILLVILLE...
GLOUCESTER COUNTY IN SOUTHERN NEW JERSEY...
SALEM COUNTY IN SOUTHERN NEW JERSEY...
* UNTIL 215 PM EST
* AT 109 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 PENNS GROVE TO MOUNT PLEASANT...OR ALONG A LINE EXTENDING FROM
WILMINGTON TO MIDDLETOWN...AND MOVING EAST AT 50 MPH.
* SEVERE THUNDERSTORMS WILL BE NEAR...
SWEDESBORO...BECKETT AND PORT PENN AROUND 115 PM EST...
WOODSTOWN AND SALEM AROUND 120 PM EST...
MULLICA HILL AND HANCOCKS BRIDGE AROUND 125 PM EST...
PITMAN...NEWPORT MEADOWS AND GLASSBORO AROUND 130 PM EST...
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 3934 7486 3939 7545 3943 7548 3946 7555
3950 7557 3952 7554 3958 7554 3958 7556
3946 7558 3942 7553 3939 7552 3941 7576
3954 7578 3979 7549 3972 7460
TIME...MOT...LOC 1810Z 275DEG 43KT 3974 7542 3953 7569
$$
GORSE2 follow-up statements
892
WWUS51 KPHI 251835
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
135 PM EST FRI FEB 25 2011
DEC003-NJC001-005-007-011-015-033-251915-
/O.CON.KPHI.SV.W.0002.000000T0000Z-110225T1915Z/
SALEM NJ-CUMBERLAND NJ-CAMDEN NJ-GLOUCESTER NJ-NEW CASTLE DE-
ATLANTIC NJ-BURLINGTON NJ-
135 PM EST FRI FEB 25 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM EST
FOR SOUTH CENTRAL BURLINGTON...WESTERN ATLANTIC...SOUTHERN NEW
CASTLE...GLOUCESTER...SOUTHEASTERN CAMDEN...NORTHERN CUMBERLAND AND
SALEM COUNTIES...
AT 132 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM PITMAN TO HANCOCKS BRIDGE...OR ALONG A LINE EXTENDING
FROM 16 MILES SOUTH OF CAMDEN TO 16 MILES EAST OF MIDDLETOWN...MOVING
EAST AT 50 MPH.
THE DAMAGING WINDS CAN OCCUR ANYWHERE ALONG THIS LINE AS IT RACES
ACROSS THE AREA.
SEVERE THUNDERSTORMS WILL BE NEAR...
SICKLERVILLE...FRANKLINVILLE...WILLIAMSTOWN AND SHILOH BY 140 PM
EST...
VICTORY LAKES...FAIRTON...MONROE TOWNSHIP AND MALAGA BY 145 PM
EST...
CHESILHURST AND ROSENHAYN BY 150 PM EST...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS LINE OF HEAVY SHOWERS AND THUNDERSTORMS MAY CONTAIN LITTLE OR
NO LIGHTNING. DO NOT WAIT FOR THUNDER BEFORE TAKING COVER. SEEK
SHELTER IMMEDIATELY INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 PM EST FRIDAY
AFTERNOON FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW
JERSEY AND SOUTHEAST PENNSYLVANIA.
&&
LAT...LON 3934 7486 3939 7545 3943 7548 3946 7555
3950 7557 3952 7554 3958 7554 3958 7556
3946 7558 3942 7553 3939 7552 3941 7576
3956 7570 3978 7536 3972 7460
TIME...MOT...LOC 1834Z 275DEG 43KT 3971 7510 3950 7537
$$
GORSE945
WWUS51 KPHI 251856
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
156 PM EST FRI FEB 25 2011
DEC003-251905-
/O.CAN.KPHI.SV.W.0002.000000T0000Z-110225T1915Z/
NEW CASTLE DE-
156 PM EST FRI FEB 25 2011
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN NEW CASTLE COUNTY IS
CANCELLED...
THE LINE OF HEAVY SHOWERS AND SEVERE THUNDERSTORMS HAVE MOVED 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 3944 7545 3960 7544 3971 7511 3972 7460
3934 7486
TIME...MOT...LOC 1855Z 275DEG 43KT 3969 7481 3948 7509
$$
NJC001-005-007-011-015-033-251915-
/O.CON.KPHI.SV.W.0002.000000T0000Z-110225T1915Z/
SALEM NJ-CUMBERLAND NJ-CAMDEN NJ-GLOUCESTER NJ-ATLANTIC NJ-
BURLINGTON NJ-
156 PM EST FRI FEB 25 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 215 PM EST
FOR SOUTH CENTRAL BURLINGTON...WESTERN ATLANTIC...SOUTHEASTERN
GLOUCESTER...SOUTHEASTERN CAMDEN...NORTHERN CUMBERLAND AND
SOUTHEASTERN SALEM COUNTIES...
AT 151 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 6 MILES EAST OF WILLIAMSTOWN TO ROSENHAYN...OR ALONG A
LINE EXTENDING FROM 17 MILES NORTH OF VINELAND TO 8 MILES WEST OF
VINELAND...MOVING EAST AT 50 MPH.
THE DAMAGING WINDS CAN OCCUR ANYWHERE ALONG THIS LINE AS IT RACES
EAST ACROSS THE AREA.
SEVERE THUNDERSTORMS WILL BE NEAR...
SOUTH VINELAND...VINELAND...HAMMONTON AND FOLSOM BY 200 PM EST...
CUMBERLAND BY 205 PM EST...
WEYMOUTH...MIZPAH...ELWOOD-MAGNOLIA AND ELWOOD BY 210 PM EST...
DOROTHY BY 215 PM EST...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 400 PM EST FRIDAY
AFTERNOON FOR DELAWARE AND NORTHEASTERN MARYLAND AND SOUTHERN NEW
JERSEY AND SOUTHEAST PENNSYLVANIA.
&&
LAT...LON 3944 7545 3960 7544 3971 7511 3972 7460
3934 7486
TIME...MOT...LOC 1855Z 275DEG 43KT 3969 7481 3948 7509
$$
GORSEThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 25, 7:53 AM EST | Special Weather Statement | PHI | Kent, Sussex | 82 min |
| Feb 25, 9:15 AM EST | Special Weather Statement | PHI | Kent, Sussex | 90 min |
| Feb 25, 10:28 AM EST | Special Weather Statement | PHI | Sussex | 62 min |
| Feb 25, 12:44 PM EST | Special Weather Statement | PHI | New Castle | 61 min |
| Feb 25, 1:36 PM EST | Severe Thunderstorm Warning | PHI | Kent | 54 min |
| Feb 25, 1:55 PM EST | Severe Thunderstorm Warning | PHI | Kent, New Castle | 65 min |
| Feb 25, 2:57 PM EST | Special Weather Statement | PHI | Kent | 63 min |
| Feb 25, 4:56 AM EST | Freezing Rain Advisory | PHI | Sussex | 5 hr |
| Feb 25, 1:04 PM EST | Severe Thunderstorm Warning | PHI | Burlington, Camden, Gloucester | 56 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 |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2011Severe Thunderstorm Warnings in Delaware, 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.