Alert archive / Maryland / Severe Thunderstorm Warnings in 2015
Severe Thunderstorm Warning 50, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 20, 2015, 9:35 PM EDT for Caroline County, Talbot County, Maryland. It was in force for 55 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, 9:35 PM EDT (01:35 UTC)
- Expired
- Jun 20, 2015, 10:30 PM EDT
- In force
- 55 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Storm-based polygon
Counties Caroline County, MD, Talbot County, MD
The radar
The Dover AFB radar (KDOX), 63 km from the middle of the area, began a volume at 01:38 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 20, 8:56 PM EDT | Severe Thunderstorm Watch | SPC | 4 hr |
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 00:00Z, 1.6 hours before the alert went out and 114 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
- 261 J/kg
- Mixed-layer CIN
- -134 J/kg
- Mixed-layer LCL
- 1179 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 16 m²/s²
- 0-3 km storm-relative helicity
- 75 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
919
WUUS51 KPHI 210135
SVRPHI
MDC011-041-210230-
/O.NEW.KPHI.SV.W.0050.150621T0135Z-150621T0230Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
935 PM EDT SAT JUN 20 2015
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CAROLINE COUNTY IN EASTERN MARYLAND...
TALBOT COUNTY IN EASTERN MARYLAND...
* UNTIL 1030 PM EDT
* AT 932 PM EDT...DOPPLER RADAR INDICATED A LINE OF SEVERE
THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
MPH. THIS STORM WAS LOCATED OVER CALVERT COUNTY MARYLAND AND
MOVING NORTHEAST AT 50 MPH.
* LOCATIONS IMPACTED INCLUDE...
EASTON...TALBOT...DENTON...FEDERALSBURG...TRAPPE...ST. MICHAELS...
PRESTON...OXFORD...QUEEN ANNE...CHOPTANK...COPPERVILLE...HARMONY...
TANYARD...SKIPTON...SMITHVILLE...AGNER...WINDYHILL...TILGHMAN
ISLAND...GRIFFIN AND MATTHEWS.
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.
THIS STORM HAS A HISTORY OF PRODUCING WIND DAMAGE. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
&&
LAT...LON 3876 7633 3886 7626 3879 7620 3886 7620
3888 7610 3894 7610 3893 7574 3866 7572
3870 7590 3857 7604 3868 7617 3868 7621
3876 7622 3872 7630 3878 7629 3867 7634
3873 7633 3876 7638
TIME...MOT...LOC 0132Z 238DEG 50KT 3850 7641
$$
AMC1 follow-up statement
402
WWUS51 KPHI 210153
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
953 PM EDT SAT JUN 20 2015
MDC011-041-210230-
/O.CON.KPHI.SV.W.0050.000000T0000Z-150621T0230Z/
CAROLINE MD-TALBOT MD-
953 PM EDT SAT JUN 20 2015
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT
FOR CAROLINE AND TALBOT COUNTIES...
AT 952 PM EDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE
OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS
LOCATED NEAR OXFORD...OR 8 MILES NORTHWEST OF CAMBRIDGE...MOVING
NORTHEAST AT 45 MPH.
LOCATIONS IMPACTED INCLUDE...
EASTON...TALBOT...DENTON...FEDERALSBURG...TRAPPE...ST. MICHAELS...
PRESTON...OXFORD...QUEEN ANNE...CHOPTANK...COPPERVILLE...HARMONY...
TANYARD...SKIPTON...SMITHVILLE...AGNER...WINDYHILL...TILGHMAN
ISLAND...GRIFFIN AND MATTHEWS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...DESTRUCTIVE HAIL...
DEADLY LIGHTNING AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN
INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY
RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER
COVERS THE ROAD.
THIS STORM HAS A HISTORY OF PRODUCING WIND DAMAGE. THIS IS A VERY
DANGEROUS SITUATION. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND
STAY AWAY FROM WINDOWS.
&&
LAT...LON 3876 7633 3886 7626 3879 7620 3886 7620
3888 7610 3894 7610 3893 7574 3866 7572
3870 7590 3857 7604 3868 7617 3868 7621
3876 7622 3872 7630 3878 7629 3867 7634
3873 7633 3876 7638
TIME...MOT...LOC 0152Z 233DEG 40KT 3863 7620
$$
SFJThe office that day
Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 8:31 PM EDT | Special Weather Statement | PHI | Caroline, Cecil, Queen Anne's, Talbot | 3 hr |
| Jun 20, 9:49 PM EDT | Severe Thunderstorm Warning | PHI | Cecil | 56 min |
| Jun 20, 9:57 PM EDT | Severe Thunderstorm Warning | PHI | Caroline, Kent, Queen Anne's | 63 min |
| Jun 20, 10:32 PM EDT | Severe Thunderstorm Warning | PHI | Caroline | 46 min |
| Jun 21, 12:47 AM EDT | Areal Flood Advisory | PHI | Cecil | 4 hr |
| Jun 21, 4:45 AM EDT | Special Weather Statement | PHI | Queen Anne's | 30 min |
| Jun 21, 5:12 AM EDT | Areal Flood Advisory | PHI | Caroline, Cecil, Kent, Queen Anne's, Talbot | 4 hr |
Nearby
Severe 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.