Alert archive / Maryland / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 49, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 20, 2015, 5:28 PM EDT for Cecil County, Kent County, Queen Anne's County, Maryland; Kent County, New Castle County, Delaware. It was in force for 47 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 20, 2015, 5:28 PM EDT (21:28 UTC)
- Expired
- Jun 20, 2015, 6:15 PM EDT
- In force
- 47 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Kent County, DE, New Castle County, DE, Cecil County, MD, Kent County, MD, Queen Anne's County, MD
The radar
The Dover AFB radar (KDOX), 64 km from the middle of the area, began a volume at 21:31 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
Washington/Dulle, VA (KIAD), launched 12:00Z, 9.5 hours before the alert went out and 147 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
- 30 J/kg
- Mixed-layer CIN
- -153 J/kg
- Mixed-layer LCL
- 1169 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 98 m²/s²
- 0-3 km storm-relative helicity
- 172 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
462 WUUS51 KPHI 202128 SVRPHI DEC001-003-MDC015-029-035-202215- /O.NEW.KPHI.SV.W.0049.150620T2128Z-150620T2215Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MOUNT HOLLY NJ 528 PM EDT SAT JUN 20 2015 THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHWESTERN NEW CASTLE COUNTY IN NORTHERN DELAWARE... NORTHWESTERN KENT COUNTY IN CENTRAL DELAWARE... NORTHEASTERN QUEEN ANNE'S COUNTY IN NORTHEASTERN MARYLAND... NORTHEASTERN KENT COUNTY IN NORTHEASTERN MARYLAND... SOUTHEASTERN CECIL COUNTY IN NORTHEASTERN MARYLAND... * UNTIL 615 PM EDT * AT 527 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED OVER MASSEY...OR 11 MILES SOUTHWEST OF MIDDLETOWN...AND MOVING NORTHEAST AT 15 MPH. * LOCATIONS IMPACTED INCLUDE... MIDDLETOWN...CECILTON...SASSAFRAS...DELANEY CORNER...BOHEMIAS MILLS...WARWICK...MASSEY...TOWNSEND AND GALENA. 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. && LAT...LON 3924 7579 3932 7594 3952 7580 3939 7556 TIME...MOT...LOC 2127Z 218DEG 13KT 3932 7585 $$ AMC
1 follow-up statement
525
WWUS51 KPHI 202200
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
600 PM EDT SAT JUN 20 2015
DEC001-MDC035-202209-
/O.CAN.KPHI.SV.W.0049.000000T0000Z-150620T2215Z/
KENT DE-QUEEN ANNE'S MD-
600 PM EDT SAT JUN 20 2015
...THE SEVERE THUNDERSTORM WARNING FOR NORTHWESTERN KENT AND
NORTHEASTERN QUEEN ANNE'S COUNTIES IS CANCELLED...
THE SEVERE THUNDERSTORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF
THE WARNED AREA. THEREFORE THE WARNING HAS BEEN CANCELLED.
LAT...LON 3930 7570 3932 7593 3952 7580 3939 7556
TIME...MOT...LOC 2159Z 218DEG 13KT 3937 7578
$$
DEC003-MDC015-029-202215-
/O.CON.KPHI.SV.W.0049.000000T0000Z-150620T2215Z/
NEW CASTLE DE-KENT MD-CECIL MD-
600 PM EDT SAT JUN 20 2015
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR SOUTHWESTERN NEW CASTLE...NORTHEASTERN KENT AND SOUTHEASTERN
CECIL COUNTIES...
AT 559 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED OVER SASSAFRAS...OR NEAR MIDDLETOWN...MOVING NORTHEAST AT 15
MPH. PENNY SIZE HAIL MAY ALSO ACCOMPANY THE DAMAGING WINDS.
LOCATIONS IMPACTED INCLUDE...
MIDDLETOWN...CECILTON...SASSAFRAS...BOHEMIAS MILLS...WARWICK...
TOWNSEND AND GALENA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE 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.
TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.
&&
LAT...LON 3930 7570 3932 7593 3952 7580 3939 7556
TIME...MOT...LOC 2159Z 218DEG 13KT 3937 7578
$$
AMCThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 5:18 PM EDT | Special Weather Statement | PHI | Cecil | 42 min |
| Jun 20, 6:07 PM EDT | Areal Flood Advisory | PHI | Cecil, Kent, Queen Anne's | 3 hr |
| Jun 20, 5:04 PM EDT | Special Weather Statement | PHI | New Castle | 26 min |
| Jun 20, 6:18 PM EDT | Special Weather Statement | PHI | New Castle | 42 min |
Nearby
Severe Thunderstorm Warnings in Maryland, 2015Severe Thunderstorm Warnings in Delaware, 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.