Alert archive / Virginia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 169, NWS Wakefield, VA

July 6, 20117 counties in Virginia

NWS Wakefield, VA issued this severe thunderstorm warning at Jul 6, 2011, 6:01 PM EDT for 7 counties in Virginia. It was in force for 44 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
Jul 6, 2011, 6:01 PM EDT (22:01 UTC)
Expired
Jul 6, 2011, 6:45 PM EDT
In force
44 min
Issued by
NWS Wakefield, VA
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

Counties City of Chesapeake, VA, City of Newport News, VA, City of Norfolk, VA, City of Portsmouth, VA, City of Suffolk, VA, City of Virginia Beach, VA, Isle of Wight County, VA

The radar

The Norfolk radar (KAKQ), 58 km from the middle of the area, began a volume at 22:02 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 12:00Z, 10.0 hours before the alert went out and 150 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 12:00Z on 2011-07-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1078 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 12:00Z on 2011-07-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 4 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
1078 J/kg
Mixed-layer CIN
-23 J/kg
Mixed-layer LCL
886 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
4 m²/s²
0-3 km storm-relative helicity
53 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 Jul 6, 5:33 PM EDT, 28 minutes earlier.

Area forecast discussion, Jul 6, 5:33 PM EDT, 28 minutes before
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Hazardous weather outlook, Jul 6, 4:58 AM EDT, 13 hours 3 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE WAKEFIELD VA
458 AM EDT WED JUL 6 2011

MDZ021>025-NCZ012>017-030>032-102-VAZ048-049-060>100-070900-
DORCHESTER-WICOMICO-SOMERSET-INLAND WORCESTER-MARYLAND BEACHES-
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-WESTMORELAND-RICHMOND-NORTHUMBERLAND-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-
458 AM EDT WED JUL 6 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE LOWER EASTERN SHORE OF
MARYLAND...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...TODAY AND TONIGHT.

SCATTERED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND THIS
EVENING. A FEW STORMS MAY BE STRONG TO SEVERE...CAPABLE OF
PRODUCING GUSTY WINDS AND HEAVY DOWNPOURS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

ISOLATED TO SCATTERED THUNDERSTORMS ARE EXPECTED EACH DAY FROM
THURSDAY AND FRIDAY. THE MAIN THREAT WILL BE VERY HEAVY RAIN FROM
ANY OF THESE STORMS...ALTHOUGH GUSTY WINDS ARE ALSO POSSIBLE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED THIS AFTERNOON AND TONIGHT.

ANZ630>634-650-652-654-656-658-070900-
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-
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-
458 AM EDT WED JUL 6 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE CENTRAL CHESAPEAKE
BAY...THE SOUTHERN CHESAPEAKE BAY...THE MID ATLANTIC COASTAL WATERS
AND CURRITUCK SOUND.

.DAY ONE...TODAY AND TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

05

In the hours before

Local storm report, Jul 6, 4:59 PM EDT, 1 hour 2 minutes before
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Special weather statement, Jul 6, 5:11 PM EDT, 50 minutes before
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Special weather statement, Jul 6, 5:23 PM EDT, 38 minutes before
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Local storm report, Jul 6, 5:31 PM EDT, 30 minutes before
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Special weather statement, Jul 6, 5:41 PM EDT, 20 minutes before
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Special weather statement, Jul 6, 5:52 PM EDT, 9 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Jul 6, 9:13 AM EDTSpecial Weather StatementAKQYork, City of Hampton, City of Newport News, City of Poquoson47 min
Jul 6, 10:25 AM EDTSpecial Weather StatementAKQCaroline65 min
Jul 6, 10:28 AM EDTSpecial Weather StatementAKQLouisa62 min
Jul 6, 11:13 AM EDTSpecial Weather StatementAKQEssex62 min
Jul 6, 1:30 PM EDTSpecial Weather StatementAKQChesterfield, Powhatan45 min
Jul 6, 1:45 PM EDTSpecial Weather StatementAKQCumberland45 min
Jul 6, 2:26 PM EDTSpecial Weather StatementAKQChesterfield, Henrico, City of Richmond69 min
Jul 6, 2:33 PM EDTSevere Thunderstorm WarningAKQCharles City, Chesterfield, Henrico, New Kent, Prince George, City of Hopewell and 1 more42 min
Jul 6, 2:36 PM EDTAreal Flood AdvisoryAKQAmelia, Chesterfield, Cumberland, Fluvanna, Goochland, Henrico and 2 more54 min
Jul 6, 3:03 PM EDTSpecial Weather StatementAKQGoochland57 min
Jul 6, 3:13 PM EDTSpecial Weather StatementAKQIsle of Wight, City of Hampton, City of Newport News, City of Norfolk, City of Poquoson, City of Portsmouth62 min
Jul 6, 3:16 PM EDTSpecial Weather StatementAKQChesterfield, Nottoway, City of Richmond59 min
Jul 6, 3:17 PM EDTSpecial Weather StatementAKQCharles City, Henrico, Prince George, City of Colonial Heights, City of Hopewell, City of Petersburg58 min
Jul 6, 3:28 PM EDTSevere Thunderstorm WarningAKQCharles City, Chesterfield, Dinwiddie, Henrico, James City, Prince George and 6 more47 min
Jul 6, 3:46 PM EDTSpecial Marine WarningAKQ74 min
Jul 6, 3:59 PM EDTAreal Flood AdvisoryAKQCharles City, Chesterfield, Dinwiddie, Prince George, City of Colonial Heights, City of Hopewell and 1 more61 min
Jul 6, 4:06 PM EDTSpecial Weather StatementAKQGreensville54 min
Jul 6, 4:17 PM EDTSpecial Weather StatementAKQCharles City, Isle of Wight, James City, Surry, Sussex, City of Newport News and 1 more43 min
Jul 6, 4:19 PM EDTSpecial Weather StatementAKQBrunswick, Lunenburg, Mecklenburg71 min
Jul 6, 4:34 PM EDTSevere Thunderstorm WarningAKQCharles City, Gloucester, Isle of Wight, James City, Surry, York and 2 more40 min
Jul 6, 5:11 PM EDTSpecial Weather StatementAKQGreensville, Isle of Wight, Southampton, City of Emporia, City of Franklin64 min
Jul 6, 5:41 PM EDTSpecial Weather StatementAKQMecklenburg49 min
Jul 6, 5:45 PM EDTSevere Thunderstorm WarningAKQMecklenburg45 min
Jul 6, 5:52 PM EDTSpecial Weather StatementAKQIsle of Wight, York, City of Chesapeake, City of Hampton, City of Newport News, City of Norfolk and 4 more68 min
Jul 6, 5:53 PM EDTSevere Thunderstorm WarningAKQCity of Chesapeake, City of Suffolk52 min
Jul 6, 5:58 PM EDTAreal Flood AdvisoryAKQYork, City of Chesapeake, City of Hampton, City of Newport News, City of Norfolk, City of Poquoson and 3 more92 min
Jul 6, 6:07 PM EDTSpecial Marine WarningAKQ83 min
Jul 6, 6:07 PM EDTSpecial Weather StatementAKQAccomack53 min
Jul 6, 6:15 PM EDTSpecial Weather StatementAKQYork, City of Hampton, City of Newport News, City of Poquoson60 min
Jul 6, 6:35 PM EDTSpecial Weather StatementAKQBrunswick, Greensville, City of Emporia55 min
Jul 6, 7:03 PM EDTSpecial Weather StatementAKQCity of Chesapeake, City of Norfolk, City of Virginia Beach57 min
Jul 6, 7:28 PM EDTAreal Flood AdvisoryAKQCity of Chesapeake, City of Virginia Beach2 hr
Jul 6, 1:24 PM EDTSpecial Weather StatementAKQBertie71 min
Jul 6, 2:18 PM EDTSpecial Weather StatementAKQPasquotank, Perquimans72 min
Jul 6, 6:03 PM EDTSpecial Weather StatementAKQChowan, Perquimans57 min
Jul 6, 6:18 PM EDTSpecial Weather StatementAKQGates57 min
Jul 6, 12:43 PM EDTSpecial Weather StatementAKQWorcester62 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2011Every severe thunderstorm warning in 2011

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.