Alert archive / Virginia / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 103, NWS Wakefield, VA

August 4, 2015Accomack County, Virginia

NWS Wakefield, VA issued this severe thunderstorm warning at Aug 4, 2015, 9:54 PM EDT for Accomack County, Virginia. It was in force for 36 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 4, 2015, 9:54 PM EDT (01:54 UTC)
Expired
Aug 4, 2015, 10:30 PM EDT
In force
36 min
Issued by
NWS Wakefield, VA
Area
Storm-based polygon

County Accomack County, VA

The radar

The Dover AFB radar (KDOX), 121 km from the middle of the area, began a volume at 01:53 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, 1.9 hours before the alert went out and 36 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 2015-08-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 961 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 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 2015-08-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 square meters per square second.193958Sfc1 km3 km6 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
961 J/kg
Mixed-layer CIN
-30 J/kg
Mixed-layer LCL
1098 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
75 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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 4, 9:33 PM EDT, 21 minutes earlier.

Area forecast discussion, Aug 4, 9:33 PM EDT, 21 minutes before
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Hazardous weather outlook, Aug 4, 9:29 PM EDT, 25 minutes before
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In the hours before

Special weather statement, Aug 4, 6:08 PM EDT, 3 hours 46 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WAKEFIELD VA
608 PM EDT TUE AUG 4 2015

MDZ021-022-042245-
DORCHESTER-WICOMICO-
608 PM EDT TUE AUG 4 2015

...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL DORCHESTER AND
WESTERN WICOMICO COUNTIES...

AT 608 PM EDT...A STRONG THUNDERSTORM WAS NEAR HEBRON...OR 10 MILES
NORTHWEST OF FRUITLAND...MOVING NORTHEAST AT 35 MPH.

WIND GUSTS OF 40 TO 50 MPH AND HALF INCH HAIL ARE POSSIBLE WITH THIS
STORM.

THIS STORM WILL BE NEAR...
  HEBRON AROUND 615 PM EDT.
  SHARPTOWN AROUND 620 PM EDT.
  DELMAR AROUND 625 PM EDT.

OTHER LOCATIONS IMPACTED BY THIS STORM INCLUDE GREEN HILL...MELSON...
ROYAL OAK...MARDELA SPRINGS...CATCHPENNY...GALESTOWN AND WETIPQUIN.

IF YOU SEE LIGHTNING OR HEAR THUNDER...YOU ARE AT RISK. TAKE SHELTER
INDOORS IMMEDIATELY. IF YOU CANNOT FIND SHELTER IN A BUILDING A
VEHICLE PROVIDES SAFETY FROM LIGHTNING.

STRONG WIND GUSTS ARE POSSIBLE WITH THIS STORM. THESE WIND GUSTS ARE
CAPABLE OF KNOCKING DOWN TREE LIMBS...SMALL OR WEAKENED TREES...AND
BLOWING AROUND TRASH CANS...POTTED PLANTS...LAWN FURNITURE AND OTHER
LIGHT OUTDOOR OBJECTS.

LAT...LON 3846 7569 3845 7545 3828 7579 3842 7593
      3860 7571
TIME...MOT...LOC 2208Z 231DEG 32KT 3841 7578

ALB
Special weather statement, Aug 4, 6:14 PM EDT, 3 hours 40 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WAKEFIELD VA
614 PM EDT TUE AUG 4 2015

MDZ023-024-VAZ099-042300-
INLAND WORCESTER-SOMERSET-SOMERSET-INLAND WORCESTER-ACCOMACK-
614 PM EDT TUE AUG 4 2015

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT SOMERSET...
SOUTHWESTERN WORCESTER AND NORTHERN ACCOMACK COUNTIES...

AT 613 PM EDT...AN AREA OF STRONG THUNDERSTORMS WAS 8 MILES SOUTHWEST
OF DEAL ISLAND...OR 19 MILES EAST OF SAINT INIGOES CREEK...MOVING
EAST AT 25 MPH.

WIND GUSTS OF 40 TO 50 MPH AND HALF INCH HAIL ARE POSSIBLE WITH THIS
STORMS.

LOCATIONS IMPACTED INCLUDE...
PRINCESS ANNE...UNIVERSITY OF MARYLAND EASTERN SHORE...MARION
STATION...WESTOVER...WEST POCOMOKE...SHELLTOWN...UPPER FAIRMOUNT...
REHOBETH...ORIOLE...UPPER HILL...MANOKIN...CHAMP...SMITH ISLAND...
HOPEWELL...RUMBLEY...MONIE...FAIRMOUNT AND KINGSTON.

STRONG WIND GUSTS ARE POSSIBLE WITH THESE STORMS. THESE WIND GUSTS
ARE CAPABLE OF KNOCKING DOWN TREE LIMBS...SMALL OR WEAKENED
TREES...AND BLOWING AROUND TRASH CANS...POTTED PLANTS...LAWN
FURNITURE AND OTHER LIGHT OUTDOOR OBJECTS.

TORRENTIAL RAINFALL IS OCCURRING WITH THESE STORMS...AND MAY CAUSE
LOCALIZED FLOODING.  IF THE ROAD AHEAD OF YOU IS FLOODED...TURN
AROUND. DRIVING THROUGH FLOODED ROADS IS DANGEROUS AND POTENTIALLY
LIFE THREATENING.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THESE STORM
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. IF YOU HEAR
THUNDER...SEEK A SAFE SHELTER INSIDE A BUILDING OR VEHICLE.

LAT...LON 3799 7572 3795 7605 3804 7602 3799 7589
      3803 7583 3803 7582 3804 7583 3807 7579
      3807 7578 3808 7588 3814 7580 3814 7579
      3815 7583 3815 7593 3807 7601 3809 7606
      3813 7603 3824 7562 3794 7557
TIME...MOT...LOC 2213Z 265DEG 21KT 3805 7603

JFOSTER
Local storm report, Aug 4, 7:16 PM EDT, 2 hours 38 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE WAKEFIELD VA
716 PM EDT TUE AUG 04 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0700 PM     TSTM WND DMG     CRISFIELD               37.98N  75.86W
08/04/2015                   SOMERSET           MD   911 CALL CENTER

            TREES DOWN

&&

EVENT NUMBER AKQ1501156

JFOSTER
Special weather statement, Aug 4, 7:23 PM EDT, 2 hours 31 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WAKEFIELD VA
723 PM EDT TUE AUG 4 2015

MDZ021>023-042345-
WICOMICO-DORCHESTER-WICOMICO-SOMERSET-DORCHESTER-SOMERSET-
723 PM EDT TUE AUG 4 2015

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT CENTRAL SOMERSET...
WICOMICO AND CENTRAL DORCHESTER COUNTIES...

AT 721 PM EDT...AN AREA OF STRONG THUNDERSTORMS WAS EXTENDING FROM
16 MILES NORTHEAST OF SAINT INIGOES CREEK TO DEAL ISLAND TO 9 MILES
NORTH OF LAWSONIA TO 7 MILES NORTH OF TANGIER...AND MOVING NORTHWEST
AT 10 MPH.

WIND GUSTS OF 30 TO 40 MPH AND VERY HEAVY RAINFALL UP TO ONE INCH
ARE POSSIBLE WITH THESE STORMS.

THESE STORMS WILL REMAIN OVER MAINLY RURAL AREAS OF WICOMICO...
CENTRAL DORCHESTER...SOUTHWESTERN WICOMICO...CENTRAL SOMERSET...
SOUTHEASTERN DORCHESTER AND SOMERSET COUNTIES...INCLUDING THE
FOLLOWING LOCATIONS...GREEN HILL...UPPER FAIRMOUNT...DAMES QUARTER...
TRINITY...WETIPQUIN...ORIOLE...NANTICOKE...MOUNT VERNON...UPPER HILL
AND BIVALVE.

MOTORISTS SHOULD USE EXTRA CAUTION IN THE VICINITY OF THESE STORMS.
BE PREPARED FOR RAPID CHANGES IN WEATHER AND ROAD CONDITIONS. HEAVY
RAIN COULD CAUSE PONDING OF WATER ON ROADS...AND POSSIBLE MINOR
FLOODING OF DITCHES AND POOR DRAINAGE AREAS.

LAT...LON 3819 7561 3796 7586 3797 7586 3794 7600
      3803 7605 3799 7589 3814 7579 3812 7609
      3822 7582 3826 7592 3836 7587 3823 7597
      3837 7601 3813 7609 3813 7610 3829 7611
      3828 7614 3845 7595
TIME...MOT...LOC 2321Z 125DEG 7KT 3823 7612 3818 7597 3808 7590 3793
7600

JFOSTER
Local storm report, Aug 4, 8:28 PM EDT, 1 hour 26 minutes before
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Special weather statement, Aug 4, 8:53 PM EDT, 1 hour 1 minute before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 4, 8:12 PM EDTSpecial Marine WarningAKQ48 min
Aug 4, 8:14 PM EDTTornado WarningAKQAccomack46 min
Aug 4, 8:18 PM EDTSpecial Marine WarningAKQ27 min
Aug 4, 8:37 PM EDTSpecial Marine WarningAKQ68 min
Aug 4, 8:49 PM EDTSpecial Marine WarningAKQ26 min
Aug 4, 8:53 PM EDTSpecial Weather StatementAKQAccomack67 min
Aug 4, 9:21 PM EDTSpecial Marine WarningAKQ39 min
Aug 4, 9:55 PM EDTSpecial Marine WarningAKQ65 min
Aug 5, 1:24 AM EDTSpecial Marine WarningAKQ96 min
Aug 4, 10:03 PM EDTSpecial Weather StatementAKQDorchester42 min
Aug 4, 11:01 PM EDTSpecial Weather StatementAKQDorchester, Wicomico59 min
Aug 5, 12:05 AM EDTSpecial Weather StatementAKQDorchester40 min
Aug 5, 12:54 AM EDTSpecial Weather StatementAKQWicomico, Worcester51 min
Aug 5, 1:46 AM EDTSpecial Weather StatementAKQWorcester44 min
Aug 5, 2:22 AM EDTAreal Flood AdvisoryAKQSomerset, Wicomico, Worcester113 min

Nearby

Severe Thunderstorm Warnings in Virginia, 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.