Alert archive / Maryland / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 85, NWS Wakefield, VA

August 9, 2013Somerset County, Wicomico County, Worcester County, Maryland

NWS Wakefield, VA issued this severe thunderstorm warning at Aug 9, 2013, 8:32 PM EDT for Somerset County, Wicomico County, Worcester County, Maryland. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Aug 9, 2013, 8:32 PM EDT (00:32 UTC)
Expired
Aug 9, 2013, 9:30 PM EDT
In force
58 min
Issued by
NWS Wakefield, VA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties Somerset County, MD, Wicomico County, MD, Worcester County, MD

The radar

The Dover AFB radar (KDOX), 68 km from the middle of the area, began a volume at 00:34 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

Wallops Is Stn, VA (KWAL), launched 00:00Z, 0.5 hours before the alert went out and 37 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, Wallops Is Stn, VA at 00:00Z on 2013-08-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1755 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Wallops Is Stn, VA at 00:00Z on 2013-08-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 132 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
1755 J/kg
Mixed-layer CIN
-17 J/kg
Mixed-layer LCL
1144 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
132 m²/s²
0-3 km storm-relative helicity
185 m²/s²
Significant tornado parameter
0.6
Supercell composite
4.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Wakefield, VA wrote its last area forecast discussion before this severe thunderstorm warning went out at Aug 9, 4:34 PM EDT, 3 hours 58 minutes earlier.

Area forecast discussion, Aug 9, 4:34 PM EDT, 3 hours 58 minutes before
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Hazardous weather outlook, Aug 9, 6:54 PM EDT, 1 hour 38 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE WAKEFIELD VA
654 PM EDT FRI AUG 9 2013

MDZ021>025-VAZ075-077-102300-
DORCHESTER-WICOMICO-SOMERSET-INLAND WORCESTER-MARYLAND BEACHES-
WESTMORELAND-NORTHUMBERLAND-
654 PM EDT FRI AUG 9 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE LOWER EASTERN SHORE OF
MARYLAND AND THE NORTHERN NECK OF VIRGINIA.

.DAY ONE...TONIGHT.

SCATTERED THUNDERSTORMS ARE POSSIBLE THROUGH THIS EVENING. ANY
THUNDERSTORM WILL BE CAPABLE OF PRODUCING GUSTY WINDS AND LOCALLY
HEAVY RAINFALL.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

SHOWERS AND THUNDERSTORMS ARE EXPECTED TO REDEVELOP ACROSS THE
OUTLOOK AREA ON SATURDAY. GUSTY WINDS AND LOCALLY HEAVY RAINFALL
WILL BE THE PRIMARY HAZARDS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

NCZ012>017-030>032-102-VAZ048-049-060>074-076-078>100-102300-
NORTHAMPTON NC-HERTFORD-GATES-PASQUOTANK-CAMDEN-INLAND CURRITUCK-
BERTIE-CHOWAN-PERQUIMANS-OUTER BANKS CURRITUCK-FLUVANNA-LOUISA-
PRINCE EDWARD-CUMBERLAND-GOOCHLAND-HANOVER-CAROLINE-MECKLENBURG-
LUNENBURG-NOTTOWAY-AMELIA-POWHATAN-CHESTERFIELD-HENRICO-KING WILLIAM-
KING AND QUEEN-ESSEX-RICHMOND-LANCASTER-BRUNSWICK-DINWIDDIE-
PRINCE GEORGE-CHARLES CITY-NEW KENT-GLOUCESTER-MIDDLESEX-MATHEWS-
GREENSVILLE-SUSSEX-SURRY-JAMES CITY-YORK-SOUTHAMPTON-ISLE OF WIGHT-
NEWPORT NEWS/HAMPTON-NORFOLK/PORTSMOUTH-SUFFOLK-CHESAPEAKE-
VIRGINIA BEACH-ACCOMACK-NORTHAMPTON VA-
654 PM EDT FRI AUG 9 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR COASTAL NORTHEAST NORTH
CAROLINA...INTERIOR NORTHEAST NORTH CAROLINA...THE NORTHERN OUTER
BANKS OF NORTH CAROLINA...CENTRAL VIRGINIA...EAST CENTRAL
VIRGINIA...INTERIOR SOUTHEAST VIRGINIA...SOUTH CENTRAL
VIRGINIA...SOUTH HAMPTON ROADS VIRGINIA...THE EASTERN SHORE OF
VIRGINIA...THE MIDDLE PENINSULA OF VIRGINIA...THE NORTHERN NECK OF
VIRGINIA...THE PENINSULA OF SOUTHEAST VIRGINIA AND THE PIEDMONT OF
CENTRAL VIRGINIA.

.DAY ONE...TONIGHT.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

SHOWERS AND THUNDERSTORMS ARE EXPECTED TO BECOME MORE WIDESPREAD
SATURDAY AND SUNDAY...AS A FRONTAL BOUNDARY DROPS INTO THE
OUTLOOK AREA. ANY STORMS THAT DEVELOP WILL BE CAPABLE OF PRODUCING
GUSTY WINDS AND LOCALLY HEAVY RAINFALL.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

ANZ630>638-650-652-654-656-658-102300-
CHESAPEAKE BAY FROM SMITH POINT TO WINDMILL POINT VA-
CHESAPEAKE BAY FROM WINDMILL POINT TO NEW POINT COMFORT VA-
CHESAPEAKE BAY FROM NEW POINT COMFORT TO LITTLE CREEK VA-
CURRITUCK SOUND-
CHESAPEAKE BAY FROM LITTLE CREEK TO CAPE HENRY VA...INCLUDING THE
CHESAPEAKE BAY BRIDGE TUNNEL-
RAPPAHANNOCK RIVER FROM URBANNA TO WINDMILL POINT-YORK RIVER-
JAMES RIVER FROM JAMESTOWN TO THE JAMES RIVER BRIDGE-
JAMES RIVER FROM THE JAMES RIVER BRIDGE TO THE HAMPTON ROADS BRIDGE-
TUNNEL-
COASTAL WATERS FROM FENWICK ISLAND DE TO CHINCOTEAGUE VA OUT TO
20 NM-
COASTAL WATERS FROM CHINCOTEAGUE TO PARRAMORE ISLAND VA OUT TO 20 NM-
COASTAL WATERS FROM PARRAMORE ISLAND TO CAPE CHARLES LIGHT VA OUT TO
20 NM-
COASTAL WATERS FROM CAPE CHARLES LIGHT VA TO NC VA BORDER OUT TO
20 NM-
COASTAL WATERS FROM NC VA BORDER TO CURRITUCK BEACH LIGHT NC OUT TO
20 NM-
654 PM EDT FRI AUG 9 2013

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE CENTRAL CHESAPEAKE
BAY...THE LOWER CHESAPEAKE BAY...THE MID ATLANTIC COASTAL
WATERS...CURRITUCK SOUND...THE EASTERN JAMES RIVER...THE EASTERN
RAPPAHANNOCK RIVER AND THE EASTERN YORK RIVER.

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Aug 9, 7:00 PM EDT, 1 hour 32 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WAKEFIELD VA
700 PM EDT FRI AUG 9 2013

MDZ021-022-VAZ075-100000-
DORCHESTER-WESTMORELAND-WICOMICO-
700 PM EDT FRI AUG 9 2013

...STRONG THUNDERSTORMS WILL MOVE ACROSS NORTHWEST WESTMORELAND
VRIGINIA...DORCHESTER AND WICOMICO COUNTIES IN MARYLAND THROUGH 800
PM EDT...

AT 659 PM EDT...DOPPLER RADAR INDICATED STRONG THUNDERSTORMS
SCATTERED ALONG A LINE EXTENDING FROM 8 MILES NORTHEAST OF ELDORADO
TO 16 MILES WEST OF POTOMAC BEACH...OR ALONG A LINE EXTENDING FROM 9
MILES NORTHEAST OF HURLOCK TO 13 MILES SOUTHEAST OF
STAFFORD...MOVING EAST AT 30 MPH.

A FEW LOCATIONS IMPACTED BY THESE STORMS INCLUDE
  SECRETARY...
  COLONIAL BEACH...
  SHARPTOWN...
  VIENNA...

HAZARDS INCLUDE...
GUSTY WINDS OF 30 TO 40 MPH.
AN EXCESSIVE AMOUNT OF DEADLY CLOUD TO GROUND LIGHTNING.
HEAVY RAINFALL AND MINOR FLOODING.

DON'T WAIT UNTIL YOU SEE THE FIRST LIGHTNING FLASH BEFORE HEADING TO
SAFETY. MOVE INDOORS AT THE FIRST SIGN OF THREATENING SKIES OR THE
FIRST SOUND OF THUNDER. MAKE SURE THAT LIGHTNING IS WELL AWAY FROM
YOUR LOCATION BEFORE RESUMING OUTDOOR ACTIVITY.

LAT...LON 3863 7570 3847 7569 3831 7626 3836 7625
      3836 7629 3842 7629 3848 7635 3825 7695
      3821 7695 3823 7705 3827 7703 3828 7698
      3826 7694 3848 7635 3854 7632 3861 7608
      3858 7603 3864 7597 3869 7580 3869 7576

ALBRIGHT
Special weather statement, Aug 9, 7:39 PM EDT, 53 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WAKEFIELD VA
739 PM EDT FRI AUG 9 2013

MDZ021>025-100030-
DORCHESTER-INLAND WORCESTER-MARYLAND BEACHES-SOMERSET-WICOMICO-
739 PM EDT FRI AUG 9 2013

...STRONG THUNDERSTORMS WILL MOVE ACROSS DORCHESTER...NORTHERN
SOMERSET...FAR NORTHWEST WORCESTER AND WICOMICO COUNTIES THROUGH 830
PM EDT...

AT 737 PM EDT...DOPPLER RADAR INDICATED A NEARLY SOLID LINE OF
STRONG THUNDERSTORMS EXTENDING FROM 16 MILES NORTH OF BISHOPVILLE TO
33 MILES WEST OF HONGA...OR ALONG A LINE EXTENDING FROM 23 MILES
NORTHWEST OF OCEAN CITY TO 8 MILES EAST OF COLONIAL BEACH...MOVING
EAST AT 40 MPH.

A FEW LOCATIONS IMPACTED BY THESE STORMS INCLUDE
  VIENNA...
  DELMAR...
  HEBRON...
  SALISBURY...

HAZARDS INCLUDE...
GUSTY WINDS OF 40 TO 50 MPH.
AN EXCESSIVE AMOUNT OF DEADLY CLOUD TO GROUND LIGHTNING.
HEAVY RAINFALL AND MINOR FLOODING.

DON'T WAIT UNTIL YOU SEE THE FIRST LIGHTNING FLASH BEFORE HEADING TO
SAFETY. MOVE INDOORS AT THE FIRST SIGN OF THREATENING SKIES OR THE
FIRST SOUND OF THUNDER. MAKE SURE THAT LIGHTNING IS WELL AWAY FROM
YOUR LOCATION BEFORE RESUMING OUTDOOR ACTIVITY.

LAT...LON 3815 7596 3821 7597 3822 7585 3826 7593
      3822 7597 3832 7603 3817 7601 3814 7604
      3815 7610 3820 7610 3822 7604 3825 7611
      3822 7613 3824 7618 3832 7627 3836 7625
      3839 7629 3857 7570 3846 7568 3845 7504

ALBRIGHT
Special weather statement, Aug 9, 8:28 PM EDT, 4 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WAKEFIELD VA
828 PM EDT FRI AUG 9 2013

MDZ021>025-VAZ099-100130-
ACCOMACK-DORCHESTER-INLAND WORCESTER-MARYLAND
BEACHES-SOMERSET-WICOMICO-
828 PM EDT FRI AUG 9 2013

...STRONG THUNDERSTORMS VERY HEAVY RAIN WILL MOVE ACROSS SOUTHEAST
DORCHESTER...SOMERSET...WORCESTER...WICOMICO AND FAR NORTHERN
ACCOMACK COUNTIES THROUGH 930 PM EDT...

AT 827 PM EDT...DOPPLER RADAR INDICATED A NEARLY SOLID LINE STRONG
THUNDERSTORMS EXTENDING FROM 14 MILES NORTHEAST OF OCEAN CITY TO
EDEN TO 18 MILES WEST OF DEAL ISLAND...OR ALONG A LINE EXTENDING
FROM 14 MILES NORTHEAST OF OCEAN CITY TO FRUITLAND TO 12 MILES
SOUTHEAST OF LEXINGTON PARK...MOVING EAST AT 35 MPH.

A FEW LOCATIONS IMPACTED BY THESE STORMS INCLUDE
  OCEAN PINES...
  MONIE...
  WEST OCEAN CITY...
  WHITESBURG...
  WESTOVER...
  SNOW HILL...

HAZARDS INCLUDE...
GUSTY WINDS OF 40 TO 50 MPH.
AN EXCESSIVE AMOUNT OF DEADLY CLOUD TO GROUND LIGHTNING.
VERY HEAVY RAINFALL AND MINOR FLOODING.

DON'T WAIT UNTIL YOU SEE THE FIRST LIGHTNING FLASH BEFORE HEADING TO
SAFETY. MOVE INDOORS AT THE FIRST SIGN OF THREATENING SKIES OR THE
FIRST SOUND OF THUNDER. MAKE SURE THAT LIGHTNING IS WELL AWAY FROM
YOUR LOCATION BEFORE RESUMING OUTDOOR ACTIVITY.

LAT...LON 3793 7530 3802 7589 3806 7582 3808 7589
      3814 7584 3813 7600 3806 7601 3814 7603
      3811 7610 3823 7606 3824 7603 3814 7603
      3821 7597 3822 7585 3827 7594 3846 7543
      3845 7504

ALBRIGHT

The office that day

Everything else NWS Wakefield, VA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 9, 8:13 PM EDTSpecial Marine WarningAKQ92 min
Aug 10, 11:30 AM EDTSpecial Weather StatementAKQFluvanna, Louisa60 min
Aug 10, 12:22 PM EDTSpecial Weather StatementAKQFluvanna, Goochland, Louisa38 min
Aug 10, 12:56 PM EDTSpecial Weather StatementAKQGoochland, Powhatan44 min
Aug 10, 1:15 PM EDTSevere Thunderstorm WarningAKQChesterfield, Goochland, Hanover, Henrico, King William, Louisa and 2 more45 min
Aug 10, 1:59 PM EDTSevere Thunderstorm WarningAKQCharles City, Hanover, Henrico, King William, New Kent, City of Richmond46 min
Aug 10, 2:32 PM EDTSevere Thunderstorm WarningAKQCharles City, Gloucester, James City, King and Queen, King William, New Kent and 1 more43 min
Aug 10, 2:41 PM EDTSpecial Marine WarningAKQ94 min
Aug 10, 2:47 PM EDTSpecial Marine WarningAKQ58 min
Aug 10, 2:53 PM EDTSevere Thunderstorm WarningAKQIsle of Wight, Surry, City of Newport News37 min
Aug 10, 3:03 PM EDTSevere Thunderstorm WarningAKQGloucester, James City, Mathews, York, City of Newport News, City of Williamsburg42 min
Aug 10, 3:15 PM EDTSpecial Marine WarningAKQ90 min
Aug 10, 3:23 PM EDTSevere Thunderstorm WarningAKQIsle of Wight, York, City of Hampton, City of Newport News, City of Norfolk, City of Poquoson and 1 more37 min
Aug 10, 3:44 PM EDTSevere Thunderstorm WarningAKQCity of Chesapeake, City of Norfolk, City of Portsmouth, City of Virginia Beach46 min
Aug 10, 3:47 PM EDTSpecial Marine WarningAKQ103 min
Aug 10, 4:05 PM EDTSpecial Marine WarningAKQ85 min
Aug 10, 4:21 PM EDTSpecial Weather StatementAKQMecklenburg54 min
Aug 10, 4:43 PM EDTSevere Thunderstorm WarningAKQCity of Virginia Beach17 min
Aug 10, 5:12 PM EDTSpecial Weather StatementAKQMecklenburg63 min
Aug 10, 6:24 PM EDTSpecial Weather StatementAKQGreensville, City of Emporia51 min
Aug 9, 9:20 PM EDTAreal Flood AdvisoryAKQWicomico, Worcester2 hr
Aug 10, 3:29 PM EDTSpecial Weather StatementAKQCamden, Chowan, Currituck, Hertford, Pasquotank, Perquimans61 min
Aug 10, 6:12 PM EDTSpecial Weather StatementAKQPasquotank, Perquimans63 min
Aug 10, 6:41 PM EDTSpecial Weather StatementAKQCamden, Currituck, Pasquotank, Perquimans64 min
Aug 10, 7:46 PM EDTSpecial Weather StatementAKQBertie, Chowan, Gates, Hertford59 min

Nearby

Severe Thunderstorm Warnings in Maryland, 2013Every severe thunderstorm warning in 2013

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.