Alert archive / Delaware / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 65, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 23, 2015, 7:41 PM EDT for Kent County, Sussex County, Delaware; Caroline County, Maryland. It was in force for 65 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
- Jun 23, 2015, 7:41 PM EDT (23:41 UTC)
- Expired
- Jun 23, 2015, 8:46 PM EDT
- In force
- 65 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Kent County, DE, Sussex County, DE, Caroline County, MD
The radar
The Dover AFB radar (KDOX), 25 km from the middle of the area, began a volume at 23:43 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.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 23, 4:09 PM EDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 12:00Z, 11.7 hours before the alert went out and 85 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
- 844 J/kg
- Mixed-layer CIN
- -88 J/kg
- Mixed-layer LCL
- 1420 m above ground
- 0-6 km bulk shear
- 15 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 36 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
131
WUUS51 KPHI 232341
SVRPHI
DEC001-005-MDC011-240100-
/O.NEW.KPHI.SV.W.0065.150623T2341Z-150624T0100Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
741 PM EDT TUE JUN 23 2015
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SUSSEX COUNTY IN SOUTHERN DELAWARE...
SOUTHERN KENT COUNTY IN CENTRAL DELAWARE...
SOUTHEASTERN CAROLINE COUNTY IN EASTERN MARYLAND...
* UNTIL 900 PM EDT
* AT 740 PM EDT...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 6 MILES
SOUTHEAST OF BIG STONE BEACH TO NEAR TALBOT. THE LINE IS MOVING
SOUTHEAST AT 30 MPH.
* LOCATIONS IMPACTED INCLUDE...
GEORGETOWN...MILFORD...SEAFORD...MILLSBORO...LAUREL...HARRINGTON...
LEWES...MILTON...SELBYVILLE...BRIDGEVILLE...DELMAR...DAGSBORO...
MILLVILLE...ELLENDALE...HENLOPEN ACRES...ANDREWSVILLE...SYCAMORE...
CAPE HENLOPEN STATE PARK...SMITHVILLE AND GUMBORO.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...LARGE HAIL...DEADLY
LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION...MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.
THESE STORMS HAVE A HISTORY OF PRODUCING WIND DAMAGE. THIS IS A VERY
DANGEROUS SITUATION. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND
STAY AWAY FROM WINDOWS.
&&
LAT...LON 3846 7569 3893 7581 3898 7532 3891 7531
3880 7518 3879 7510 3880 7509 3867 7507
3869 7508 3869 7514 3864 7513 3862 7508
3866 7507 3861 7506 3859 7521 3857 7518
3860 7506 3845 7505
TIME...MOT...LOC 2340Z 337DEG 24KT 3893 7526 3879 7630
$$2 follow-up statements
742
WWUS51 KPHI 240025
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
825 PM EDT TUE JUN 23 2015
DEC001-MDC011-240034-
/O.CAN.KPHI.SV.W.0065.000000T0000Z-150624T0100Z/
KENT DE-CAROLINE MD-
825 PM EDT TUE JUN 23 2015
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN KENT AND SOUTHEASTERN
CAROLINE COUNTIES IS CANCELLED...
THE STORMS WHICH PROMPTED THE WARNING HAVE MOVED
OUT OF THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.
LAT...LON 3846 7569 3866 7569 3880 7527 3880 7518
3879 7510 3880 7509 3867 7507 3869 7508
3869 7514 3864 7513 3862 7508 3866 7507
3861 7506 3859 7521 3857 7518 3860 7506
3845 7505
TIME...MOT...LOC 0024Z 337DEG 24KT 3880 7498 3866 7601
$$
DEC005-240100-
/O.CON.KPHI.SV.W.0065.000000T0000Z-150624T0100Z/
SUSSEX DE-
825 PM EDT TUE JUN 23 2015
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 900 PM EDT
FOR SUSSEX COUNTY...
AT 824 PM EDT...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 6 MILES
EAST OF CAPE HENLOPEN STATE PARK TO NEAR TRAPPE...MOVING SOUTHEAST AT
30 MPH.
LOCATIONS IMPACTED INCLUDE...
GEORGETOWN...SEAFORD...MILLSBORO...LAUREL...LEWES...MILTON...
SELBYVILLE...DELMAR...DAGSBORO...MILLVILLE...HENLOPEN ACRES...
SYCAMORE...GUMBORO...CAPE HENLOPEN STATE PARK...LONG NECK...OCEAN
VIEW...BLADES...FRANKFORD...SOUTH BETHANY AND DEWEY BEACH.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.
THESE STORMS HAVE A HISTORY OF PRODUCING WIND DAMAGE. THIS IS A VERY
DANGEROUS SITUATION. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND
STAY AWAY FROM WINDOWS.
&&
LAT...LON 3846 7569 3866 7569 3880 7527 3880 7518
3879 7510 3880 7509 3867 7507 3869 7508
3869 7514 3864 7513 3862 7508 3866 7507
3861 7506 3859 7521 3857 7518 3860 7506
3845 7505
TIME...MOT...LOC 0024Z 337DEG 24KT 3880 7498 3866 7601
$$249
WWUS51 KPHI 240046
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
846 PM EDT TUE JUN 23 2015
DEC005-240056-
/O.CAN.KPHI.SV.W.0065.000000T0000Z-150624T0100Z/
SUSSEX DE-
846 PM EDT TUE JUN 23 2015
...THE SEVERE THUNDERSTORM WARNING FOR SUSSEX COUNTY IS CANCELLED...
THE STORMS WHICH PROMPTED THE WARNING HAVE MOVED OFFSHORE.
LAT...LON 3846 7569 3866 7569 3880 7527 3880 7518
3879 7510 3880 7509 3867 7507 3869 7508
3869 7514 3864 7513 3862 7508 3866 7507
3861 7506 3859 7521 3857 7518 3860 7506
3845 7505
TIME...MOT...LOC 0045Z 337DEG 24KT 3880 7498 3866 7601
$$The office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 5:28 PM EDT | Severe Thunderstorm Warning | PHI | New Castle | 47 min |
| Jun 23, 5:38 PM EDT | Severe Thunderstorm Warning | PHI | Kent, New Castle | 52 min |
| Jun 23, 5:44 PM EDT | Areal Flood Advisory | PHI | New Castle | 4 hr |
| Jun 23, 6:14 PM EDT | Areal Flood Advisory | PHI | Kent, New Castle | 4 hr |
| Jun 23, 6:44 PM EDT | Severe Thunderstorm Warning | PHI | Kent | 76 min |
| Jun 23, 6:48 PM EDT | Areal Flood Advisory | PHI | Kent | 4 hr |
| Jun 23, 5:19 PM EDT | Areal Flood Advisory | PHI | Cecil | 4 hr |
| Jun 23, 7:06 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Queen Anne's, Talbot | 84 min |
Nearby
Severe Thunderstorm Warnings in Delaware, 2015Severe Thunderstorm Warnings in Maryland, 2015Every severe thunderstorm warning in 2015
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.