Alert archive / New Jersey / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 13, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Apr 5, 2011, 10:20 AM EDT for Caroline County, Talbot County, Maryland; Atlantic County, Cape May County, Cumberland County, New Jersey; Kent County, Sussex County, Delaware. It was in force for 40 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
- Apr 5, 2011, 10:20 AM EDT (14:20 UTC)
- Expired
- Apr 5, 2011, 11:00 AM EDT
- In force
- 40 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Kent County, DE, Sussex County, DE, Caroline County, MD, Talbot County, MD, Atlantic County, NJ, Cape May County, NJ, Cumberland County, NJ
The radar
The Dover AFB radar (KDOX), 24 km from the middle of the area, began a volume at 14:23 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 nearest sounding before it
Phillips Aaf/Abe, MD (KAPG), launched 12:00Z, 2.3 hours before the alert went out and 77 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
- 1186 m above ground
- 0-6 km bulk shear
- 79 kt
- 0-1 km storm-relative helicity
- 106 m²/s²
- 0-3 km storm-relative helicity
- 133 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
779
WUUS51 KPHI 051420
SVRPHI
DEC001-005-MDC011-041-NJC001-009-011-051500-
/O.NEW.KPHI.SV.W.0013.110405T1420Z-110405T1500Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1020 AM EDT TUE APR 5 2011
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
KENT COUNTY IN CENTRAL DELAWARE...
THIS INCLUDES THE CITY OF DOVER...
SOUTHERN CAROLINE COUNTY IN EASTERN MARYLAND...
SOUTHEASTERN TALBOT COUNTY IN EASTERN MARYLAND...
NORTHERN SUSSEX COUNTY IN SOUTHERN DELAWARE...
THIS INCLUDES THE CITY OF GEORGETOWN...
SOUTHWESTERN ATLANTIC COUNTY IN SOUTHERN NEW JERSEY...
NORTHWESTERN CAPE MAY COUNTY IN SOUTHERN NEW JERSEY...
SOUTHERN CUMBERLAND COUNTY IN SOUTHERN NEW JERSEY...
* UNTIL 1100 AM EDT
* AT 1017 AM EDT...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 CHESWOLD TO 8 MILES NORTHWEST OF ANDREWSVILLE TO PRESTON...OR
ALONG A LINE EXTENDING FROM 8 MILES NORTHWEST OF DOVER TO 18 MILES
SOUTHEAST OF CENTERVILLE TO 8 MILES EAST OF EASTON...AND MOVING
EAST AT 35 MPH.
* SEVERE THUNDERSTORMS WILL BE NEAR...
DOVER SPEEDWAY...WOODSIDE AND CAMDEN AROUND 1025 AM EDT...
SMITHVILLE...AGNER...FEDERALSBURG AND VIOLA AROUND 1030 AM EDT...
ANDREWSVILLE AND HARRINGTON AROUND 1035 AM EDT...
BRIDGEVILLE AROUND 1045 AM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS SEVERE THUNDERSTORM 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.
&&
LAT...LON 3864 7603 3892 7579 3930 7555 3931 7543
3924 7539 3931 7532 3935 7480 3916 7491
3920 7505 3917 7514 3929 7527 3929 7532
3923 7539 3907 7539 3898 7529 3893 7530
3879 7516 3867 7527 3865 7573 3869 7586
TIME...MOT...LOC 1420Z 267DEG 30KT 3926 7555 3893 7572
3873 7590
$$
DRAG1 follow-up statement
928
WWUS51 KPHI 051447
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1047 AM EDT TUE APR 5 2011
DEC001-005-MDC011-041-NJC001-009-011-051500-
/O.CON.KPHI.SV.W.0013.000000T0000Z-110405T1500Z/
KENT DE-CAROLINE MD-CUMBERLAND NJ-TALBOT MD-SUSSEX DE-CAPE MAY NJ-
ATLANTIC NJ-
1047 AM EDT TUE APR 5 2011
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1100 AM EDT
FOR SOUTHWESTERN ATLANTIC...NORTHWESTERN CAPE MAY...NORTHERN
SUSSEX...SOUTHEASTERN TALBOT...SOUTHERN CUMBERLAND...SOUTHERN
CAROLINE AND KENT COUNTIES...
AT 1041 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 8 MILES WEST OF NEWPORT TO HOUSTON TO FEDERALSBURG...
OR ALONG A LINE EXTENDING FROM 13 MILES NORTHEAST OF DOVER TO 15
MILES SOUTH OF DOVER TO 17 MILES WEST OF GEORGETOWN...MOVING EAST AT
35 MPH.
IN SOME CASES THE STRONG EST WIND IS OCCURRING ABOUT 30 MINUTES
AFTER THE PASSAGE OF THE LINE.
SEVERE THUNDERSTORMS WILL BE NEAR...
NEWPORT...FORTESQUE...BIG STONE BEACH AND ELLENDALE BY 1055 AM
EDT...
SLAUGHTER BEACH...DIVIDING CREEK...PORT NORRIS AND GEORGETOWN BY
1100 AM EDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH...PREPARE
IMMEDIATELY FOR DAMAGING WINDS. PEOPLE OUTSIDE SHOULD MOVE TO A
SHELTER...PREFERABLY INSIDE A STRONG BUILDING BUT AWAY FROM WINDOWS.
&&
LAT...LON 3864 7603 3892 7579 3930 7555 3931 7543
3924 7539 3931 7532 3935 7480 3916 7491
3920 7505 3917 7514 3929 7527 3929 7532
3923 7539 3907 7539 3898 7529 3893 7530
3879 7516 3867 7527 3865 7573 3869 7586
TIME...MOT...LOC 1446Z 267DEG 30KT 3927 7527 3894 7544
3869 7564
$$
DRAGThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 5, 5:01 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 74 min |
| Apr 5, 5:28 AM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 62 min |
| Apr 5, 8:55 AM EDT | Special Weather Statement | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 65 min |
| Apr 5, 9:37 AM EDT | Special Weather Statement | PHI | Caroline, Cecil, Kent, Queen Anne's | 53 min |
| Apr 5, 3:05 PM EDT | Frost Advisory | PHI | Caroline, Queen Anne's, Talbot | 13 hr |
| Apr 5, 5:58 AM EDT | Special Weather Statement | PHI | Hunterdon, Morris, Somerset, Sussex, Warren | 62 min |
| Apr 5, 6:05 AM EDT | Special Weather Statement | PHI | Atlantic, Burlington, Camden, Gloucester, Monmouth, Ocean and 1 more | 55 min |
| Apr 5, 6:30 AM EDT | Special Weather Statement | PHI | Hunterdon, Mercer, Middlesex, Monmouth, Morris, Somerset and 1 more | 60 min |
| Apr 5, 6:42 AM EDT | Special Weather Statement | PHI | Cape May, Cumberland | 63 min |
| Apr 5, 7:05 AM EDT | Special Weather Statement | PHI | Morris | 55 min |
| Apr 5, 7:07 AM EDT | Special Weather Statement | PHI | Burlington, Middlesex, Monmouth, Ocean | 53 min |
| Apr 5, 10:16 AM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Burlington, Camden, Cumberland, Gloucester, Salem | 44 min |
| Apr 5, 10:30 AM EDT | Special Weather Statement | PHI | Mercer, Middlesex, Monmouth, Morris, Somerset | 60 min |
| Apr 5, 10:35 AM EDT | Special Marine Warning | PHI | 55 min | |
| Apr 5, 10:41 AM EDT | Severe Thunderstorm Warning | PHI | Atlantic, Cumberland, Salem | 19 min |
| Apr 5, 10:58 AM EDT | Special Weather Statement | PHI | Atlantic, Burlington, Camden, Cape May, Cumberland, Middlesex and 2 more | 92 min |
| Apr 5, 11:00 AM EDT | Severe Thunderstorm Warning | PHI | Burlington, Monmouth, Ocean | 30 min |
| Apr 5, 11:09 AM EDT | Special Marine Warning | PHI | 96 min | |
| Apr 5, 11:45 AM EDT | Special Marine Warning | PHI | 60 min | |
| Apr 5, 2:57 PM EDT | Small Craft Advisory | PHI | 27 hr |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2011Severe Thunderstorm Warnings in Maryland, 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.