Alert archive / Maryland / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 68, NWS Philadelphia/Mount Holly

June 27, 2015Kent County, Queen Anne's County, Maryland

NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Jun 27, 2015, 5:58 PM EDT for Kent County, Queen Anne's County, Maryland. It was in force for 47 min. 2 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
Jun 27, 2015, 5:58 PM EDT (21:58 UTC)
Expired
Jun 27, 2015, 6:45 PM EDT
In force
47 min
Issued by
NWS Philadelphia/Mount Holly
Area
Storm-based polygon

Counties Kent County, MD, Queen Anne's County, MD

The radar

The Dover AFB radar (KDOX), 72 km from the middle of the area, began a volume at 21:57 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

TimeReportWhereRemark
Jun 27, 6:12 PM EDTTSTM WND DMGRock Hall, MDTREES DOWN IN ROCK HALL. TIME ESTIMATED FROM RADAR.
Jun 27, 6:26 PM EDTTSTM WND DMGWorton, MDTREES DOWN IN WORTON. TIME ESTIMATED FROM RADAR.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
Jun 27, 1:54 PM EDTTornado WatchSPC6 hr

The nearest sounding before it

Washington/Dulle, VA (KIAD), launched 12:00Z, 10.0 hours before the alert went out and 108 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.

Skew-T log-pSkew-T log-p diagram, Washington/Dulle, VA at 12:00Z on 2015-06-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Washington/Dulle, VA at 12:00Z on 2015-06-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 153 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
603 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
153 m²/s²
0-3 km storm-relative helicity
202 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

465 
WUUS51 KPHI 272158
SVRPHI
MDC029-035-272245-
/O.NEW.KPHI.SV.W.0068.150627T2158Z-150627T2245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
558 PM EDT SAT JUN 27 2015

THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ  HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL QUEEN ANNE'S COUNTY IN NORTHEASTERN MARYLAND...
  KENT COUNTY IN NORTHEASTERN MARYLAND...

* UNTIL 645 PM EDT

* AT 557 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 MIDDLE RIVER TO ROCK HALL TO CHESAPEAKE BAY BRIDGE...
  AND MOVING NORTHEAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CENTERVILLE...CHESTERTOWN...CENTREVILLE...ROCK HALL...CHURCH
  HILL...MILLINGTON...SUDLERSVILLE...BETTERTON...OLD TOWN...
  KENNEDYVILLE...STEVENSVILLE...CHESTER...NEWTOWN...CRUMPTON...
  CARVILLE...OVERTON...LANGFORD...HOPE...MASSEY AND STARKEY CORNER.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE AREA. ALTHOUGH A TORNADO IS
NOT IMMEDIATELY LIKELY...IF ONE IS SPOTTED...ACT QUICKLY AND MOVE TO
A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS...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.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT FOR NORTHEASTERN
MARYLAND.

LAT...LON 3893 7636 3903 7631 3898 7628 3902 7624
      3909 7623 3917 7628 3926 7622 3929 7617
      3933 7617 3933 7614 3937 7611 3938 7606
      3937 7584 3930 7580 3904 7594 3897 7620
      3900 7617 3902 7623 3899 7626 3897 7623
TIME...MOT...LOC 2157Z 242DEG 21KT 3924 7629 3912 7625 3899 7635 

$$

JRK
1 follow-up statement
818 
WWUS51 KPHI 272222
SVSPHI

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
622 PM EDT SAT JUN 27 2015

MDC029-035-272245-
/O.CON.KPHI.SV.W.0068.000000T0000Z-150627T2245Z/
QUEEN ANNE'S MD-KENT MD-
622 PM EDT SAT JUN 27 2015

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 645 PM EDT
FOR NORTHEASTERN QUEEN ANNE'S AND KENT COUNTIES...

AT 622 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 NEAR
LANGFORD TO NEAR OLD TOWN TO NEAR GRASONVILLE...MOVING NORTHEAST AT
25 MPH.

LOCATIONS IMPACTED INCLUDE...
CENTERVILLE...CHESTERTOWN...CENTREVILLE...ROCK HALL...CHURCH HILL...
MILLINGTON...SUDLERSVILLE...BETTERTON...OLD TOWN...KENNEDYVILLE...
NEWTOWN...CRUMPTON...CARVILLE...OVERTON...LANGFORD...HOPE...MASSEY...
STARKEY CORNER...MORGNEC AND QUEENSTOWN.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. ALTHOUGH A
TORNADO IS NOT IMMEDIATELY LIKELY...IF ONE IS SPOTTED...ACT QUICKLY
AND MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE...SUCH AS A
BASEMENT OR SMALL INTERIOR ROOM.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS..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.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 800 PM EDT FOR NORTHEASTERN
MARYLAND.

LAT...LON 3900 7625 3901 7625 3902 7624 3909 7623
      3917 7628 3926 7622 3929 7617 3933 7617
      3933 7614 3937 7611 3938 7606 3937 7584
      3930 7580 3904 7594 3897 7620 3900 7617
      3902 7623
TIME...MOT...LOC 2222Z 237DEG 22KT 3922 7623 3912 7609 3899 7615 

$$

JRK

The office that day

Everything else NWS Philadelphia/Mount Holly issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 27, 5:21 PM EDTAreal Flood AdvisoryPHICaroline, Cecil, Kent, Queen Anne's, Talbot4 hr
Jun 27, 5:48 PM EDTSevere Thunderstorm WarningPHICaroline, Queen Anne's, Talbot42 min
Jun 27, 6:43 PM EDTSevere Thunderstorm WarningPHICaroline, Cecil, Kent, Queen Anne's47 min
Jun 27, 7:42 PM EDTFlash Flood WarningPHICecil, Kent, Queen Anne's4 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.