Alert archive / New Jersey / Severe Thunderstorm Warnings in 2017
Severe Thunderstorm Warning 3, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Feb 12, 2017, 11:53 PM EST for Caroline County, Queen Anne's County, Talbot County, Maryland; 8 counties in New Jersey; Kent County, Sussex County, Delaware. It was in force for 52 min. 4 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 12, 2017, 11:53 PM EST (04:53 UTC)
- Expired
- Feb 13, 2017, 12:45 AM EST
- In force
- 52 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 60.0 mph
Counties Kent County, DE, Sussex County, DE, Caroline County, MD, Queen Anne's County, MD, Talbot County, MD, Atlantic County, NJ, Burlington County, NJ, Camden County, NJ, Cape May County, NJ, Cumberland County, NJ, Gloucester County, NJ, Ocean County, NJ, Salem County, NJ
The radar
The Dover AFB radar (KDOX), 22 km from the middle of the area, began a volume at 04:53 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 12, 11:55 PM EST | TSTM WND DMG | Saint Michaels, MD | TREES DOWN IN ST.MICHAELS... CORDOVA AND ROYAL OAK FROM THUNDERSTORM WIND GUSTS. |
| Feb 13, 12:35 AM EST | MARINE TSTM WIND 56 | Lewes, DE | |
| Feb 13, 12:38 AM EST | TSTM WND GST 57 | 1 Sw Stockley, DE | |
| Feb 13, 12:41 AM EST | MARINE TSTM WIND 55 | Lewes Nos Buoy, DE |
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 00:00Z, 4.9 hours before the alert went out and 121 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
- 44 J/kg
- Mixed-layer CIN
- -160 J/kg
- Mixed-layer LCL
- 1215 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 119 m²/s²
- 0-3 km storm-relative helicity
- 173 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.7
The text
As transmitted.
549
WUUS51 KPHI 130453
SVRPHI
DEC001-005-MDC011-035-041-NJC001-005-007-009-011-015-029-033-130545-
/O.NEW.KPHI.SV.W.0003.170213T0453Z-170213T0545Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Mount Holly NJ
1153 PM EST SUN FEB 12 2017
The National Weather Service in Mount Holly NJ has issued a
* Severe Thunderstorm Warning for...
Sussex County in southern Delaware...
Kent County in central Delaware...
Talbot County in eastern Maryland...
Queen Anne's County in northeastern Maryland...
Caroline County in eastern Maryland...
Southeastern Ocean County in southern New Jersey...
Southeastern Camden County in southern New Jersey...
Atlantic County in southern New Jersey...
Cumberland County in southern New Jersey...
Southeastern Salem County in southern New Jersey...
Southeastern Gloucester County in southern New Jersey...
Cape May County in southern New Jersey...
Southern Burlington County in southern New Jersey...
* Until 1245 AM EST
* At 1151 PM EST, severe thunderstorms were located along a line
extending from near Shamong to near Bridgeton to near Hartly to
Talbot, moving east at 60 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated. This line also has a history of
producing wind damage and gusts near 60 mph across
southern Pennsylvania and central and southern Maryland.
IMPACT...Expect damage to roofs, siding, and trees.
* Locations impacted include...
Vineland, Atlantic City, Dover, Millville, Bridgeton, Easton, Ocean
City, Georgetown, Centerville, Cumberland, Talbot, Medford,
Barnegat, Pleasantville, Glassboro, Lindenwold, Hammonton, Somers
Point, Ventnor City and Smyrna.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
This severe thunderstorm may contain little or no lightning. Do not
wait until you hear thunder before taking cover.
&&
LAT...LON 3846 7569 3869 7577 3857 7604 3876 7632
3869 7633 3902 7632 3898 7628 3924 7599
3939 7549 3929 7539 3939 7548 3994 7482
3978 7409 3891 7486 3915 7492 3928 7539
3916 7537 3892 7528 3880 7506 3845 7505
TIME...MOT...LOC 0451Z 287DEG 58KT 3981 7472 3942 7517 3916 7576 3883
7627
HAIL...<.75IN
WIND...60MPH
$$
JRK3 follow-up statements
490
WWUS51 KPHI 130517
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1217 AM EST MON FEB 13 2017
MDC035-NJC007-015-033-130525-
/O.CAN.KPHI.SV.W.0003.000000T0000Z-170213T0545Z/
Queen Anne's MD-Salem NJ-Camden NJ-Gloucester NJ-
1217 AM EST MON FEB 13 2017
...THE SEVERE THUNDERSTORM WARNING FOR QUEEN ANNE'S...SOUTHEASTERN
SALEM...SOUTHEASTERN CAMDEN AND SOUTHEASTERN GLOUCESTER COUNTIES IS
CANCELLED...
The storms which prompted the warning have moved out of
the warned area. Therefore the warning has been cancelled.
LAT...LON 3848 7569 3869 7577 3868 7594 3857 7604
3869 7621 3891 7582 3915 7568 3925 7536
3968 7470 3982 7467 3976 7411 3891 7486
3915 7492 3927 7532 3923 7538 3912 7537
3892 7528 3880 7506 3845 7505
TIME...MOT...LOC 0515Z 284DEG 57KT 3977 7459 3944 7458 3902 7557 3869
7606
$$
DEC001-005-MDC011-041-NJC001-005-009-011-029-130545-
/O.CON.KPHI.SV.W.0003.000000T0000Z-170213T0545Z/
Sussex DE-Kent DE-Talbot MD-Caroline MD-Atlantic NJ-Cumberland NJ-
Ocean NJ-Cape May NJ-Burlington NJ-
1217 AM EST MON FEB 13 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 AM EST
FOR SUSSEX...KENT...SOUTHEASTERN TALBOT...CAROLINE...ATLANTIC...
SOUTHEASTERN CUMBERLAND...SOUTHEASTERN OCEAN...CAPE MAY AND
SOUTHEASTERN BURLINGTON COUNTIES...
At 1215 AM EST, severe thunderstorms were located along a line
extending from near Wharton State Forest to near Pomona to Viola to
Hambleton, moving east at 65 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated. This line also has a history of producing
wind damage and gusts in excess of 60 mph across southern
Pennsylvania and central and southern Maryland.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Vineland, Atlantic City, Dover, Millville, Easton, Ocean City,
Georgetown, Cumberland, Barnegat, Pleasantville, Hammonton, Somers
Point, Ventnor City, Milford, Northfield, Absecon, Seaford, Margate
City, Buena and Denton.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
This severe thunderstorm may contain little or no lightning. Do not
wait until you hear thunder before taking cover.
&&
LAT...LON 3848 7569 3869 7577 3868 7594 3857 7604
3869 7621 3891 7582 3915 7568 3925 7536
3968 7470 3982 7467 3976 7411 3891 7486
3915 7492 3927 7532 3923 7538 3912 7537
3892 7528 3880 7506 3845 7505
TIME...MOT...LOC 0515Z 284DEG 57KT 3977 7459 3944 7458 3902 7557 3869
7606
HAIL...<.75IN
WIND...60MPH
$$
JRK964
WWUS51 KPHI 130538
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1238 AM EST MON FEB 13 2017
DEC001-MDC011-041-NJC001-005-009-011-029-130546-
/O.CAN.KPHI.SV.W.0003.000000T0000Z-170213T0545Z/
Kent DE-Talbot MD-Caroline MD-Atlantic NJ-Cumberland NJ-Ocean NJ-
Cape May NJ-Burlington NJ-
1238 AM EST MON FEB 13 2017
...THE SEVERE THUNDERSTORM WARNING FOR KENT...SOUTHEASTERN TALBOT...
CAROLINE...ATLANTIC...SOUTHEASTERN CUMBERLAND...SOUTHEASTERN OCEAN...
CAPE MAY AND SOUTHEASTERN BURLINGTON COUNTIES IS CANCELLED...
The storms which prompted the warning have moved out of
the warned area. Therefore the warning has been cancelled.
LAT...LON 3848 7569 3860 7571 3895 7530 3892 7528
3881 7514 3880 7506 3845 7505
TIME...MOT...LOC 0536Z 303DEG 46KT 3895 7513 3857 7567
$$
DEC005-130545-
/O.CON.KPHI.SV.W.0003.000000T0000Z-170213T0545Z/
Sussex DE-
1238 AM EST MON FEB 13 2017
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1245 AM EST
FOR SUSSEX COUNTY...
At 1236 AM EST, severe thunderstorms were located along a line
extending from 9 miles west of North Cape May to near Sharptown,
moving southeast at 55 mph.
HAZARD...60 mph wind gusts.
SOURCE...Radar indicated. Wind gusts just below 60 mph have been
reported so far with this line when it moved through
eastern Maryland and central Delaware.
IMPACT...Expect damage to roofs, siding, and trees.
Locations impacted include...
Georgetown, Seaford, Millsboro, Laurel, Lewes, Milton, Selbyville,
Dagsboro, Millville, Ellendale, Henlopen Acres, Gumboro, Cape
Henlopen State Park, Sycamore, Long Neck, Ocean View, Blades,
Frankford, South Bethany and Dewey Beach.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
This severe thunderstorm may contain little or no lightning. Do not
wait until you hear thunder before taking cover.
&&
LAT...LON 3848 7569 3860 7571 3895 7530 3892 7528
3881 7514 3880 7506 3845 7505
TIME...MOT...LOC 0536Z 303DEG 46KT 3895 7513 3857 7567
HAIL...<.75IN
WIND...60MPH
$$
JRK853
WWUS51 KPHI 130547
SVSPHI
Severe Weather Statement
National Weather Service Mount Holly NJ
1247 AM EST MON FEB 13 2017
DEC005-130556-
/O.EXP.KPHI.SV.W.0003.000000T0000Z-170213T0545Z/
Sussex DE-
1247 AM EST MON FEB 13 2017
...THE SEVERE THUNDERSTORM WARNING FOR SUSSEX COUNTY HAS EXPIRED...
The storms which prompted the warning have moved out of the area.
Therefore the warning has been allowed to expire.
Strong gusty winds will continue behind the showers during
the overnight.
LAT...LON 3848 7569 3860 7571 3895 7530 3892 7528
3881 7514 3880 7506 3845 7505
TIME...MOT...LOC 0546Z 287DEG 58KT 3892 7500 3854 7554
$$
JRKThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 12, 11:10 PM EST | Severe Thunderstorm Warning | PHI | Cecil | 50 min |
| Feb 12, 11:14 PM EST | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's, Talbot | 46 min |
| Feb 12, 11:33 PM EST | Special Marine Warning | PHI | 87 min | |
| Feb 13, 12:02 AM EST | Special Marine Warning | PHI | 88 min | |
| Feb 13, 1:25 AM EST | Special Weather Statement | PHI | Morris, Somerset, Sussex, Warren | 50 min |
| Feb 13, 12:29 PM EST | Gale Warning | PHI | 9 hr |
Nearby
Severe Thunderstorm Warnings in New Jersey, 2017Severe Thunderstorm Warnings in Maryland, 2017Severe Thunderstorm Warnings in Delaware, 2017Every severe thunderstorm warning in 2017
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.