Alert archive / Virginia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 167, NWS Wakefield, VA

July 6, 2011Mecklenburg County, Virginia

NWS Wakefield, VA issued this severe thunderstorm warning at Jul 6, 2011, 5:45 PM EDT for Mecklenburg County, Virginia. It was in force for 45 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, 5:45 PM EDT (21:45 UTC)
Expired: Jul 6, 2011, 6:30 PM EDT
In force: 45 min
Issued by: NWS Wakefield, VA
Area: Storm-based polygon
Hail: 1.5 in
Wind: 60.0 mph

County Mecklenburg County, VA

The radar

The Raleigh/Durham radar (KRAX), 113 km from the middle of the area, began a volume at 21:49 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

Roanoke, VA (KRNK), launched 12:00Z, 9.8 hours before the alert went out and 116 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 945 J/kg
Mixed-layer CIN: -20 J/kg
Mixed-layer LCL: 640 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 63 m²/s²
0-3 km storm-relative helicity: 57 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

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, 12 minutes earlier.

Area forecast discussion, Jul 6, 5:33 PM EDT, 12 minutes before

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Hazardous weather outlook, Jul 6, 4:58 AM EDT, 12 hours 47 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

Special weather statement, Jul 6, 4:19 PM EDT, 1 hour 26 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE WAKEFIELD VA
419 PM EDT WED JUL 6 2011

VAZ065>068-079-080-088-062130-
AMELIA VA-BRUNSWICK VA-DINWIDDIE VA-LUNENBURG VA-MECKLENBURG
VA-NOTTOWAY VA-SUSSEX VA-
419 PM EDT WED JUL 6 2011

...STRONG THUNDERSTORMS MOVING INTO SOUTH CENTRAL VIRGINIA...

AT 419 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS FROM WILSONS TO 8 MILES NORTHWEST OF BUFFALO
SPRINGS...OR FROM 9 MILES NORTHEAST OF FORT PICKETT TO 6 MILES SOUTH
OF CLOVER...MOVING SOUTHEAST AT 10 MPH. THE STRONG THUNDERSTORMS WILL
BE NEAR...
  SPANISH GROVE AROUND 425 PM EDT...
  FORKLAND AROUND 430 PM EDT...
  ORAL OAKS AROUND 435 PM EDT...
  WILBURN AROUND 445 PM EDT...
  ROCKY RUN AROUND 450 PM EDT...
  DUNDAS AROUND 500 PM EDT...

WIND GUSTS TO 45 TO 50 MPH...SMALL HAIL AND FREQUENT CLOUD TO GROUND
LIGHTNING ARE EXPECTED IN THE PATH OF THESE STORMS. IF YOU HEAR
THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE INTO
A SAFE SHELTER BEFORE THESE STORMS REACH YOUR AREA. REMAIN INDOORS
UNTIL THE STORMS HAVE PASSED.

RAINFALL RATES OF ONE TO TWO INCHES PER HOUR WILL CAUSE PONDING OF
WATER ON ROADWAYS...AND POSSIBLE LOCALIZED FLOODING IN LOW LYING AND
FLOOD PRONE AREAS.

LAT...LON 3668 7871 3670 7865 3688 7850 3694 7848
      3723 7775 3686 7752 3684 7756 3687 7760
      3688 7764 3690 7765 3680 7766 3653 7834
      3654 7873 3656 7874

GINGRICH

Local storm report, Jul 6, 4:59 PM EDT, 46 minutes before

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Special weather statement, Jul 6, 5:11 PM EDT, 34 minutes before

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Special weather statement, Jul 6, 5:23 PM EDT, 22 minutes before

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Local storm report, Jul 6, 5:31 PM EDT, 14 minutes before

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Special weather statement, Jul 6, 5:41 PM EDT, 4 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 6, 9:13 AM EDT	Special Weather Statement	AKQ	York, City of Hampton, City of Newport News, City of Poquoson	47 min
Jul 6, 10:25 AM EDT	Special Weather Statement	AKQ	Caroline	65 min
Jul 6, 10:28 AM EDT	Special Weather Statement	AKQ	Louisa	62 min
Jul 6, 11:13 AM EDT	Special Weather Statement	AKQ	Essex	62 min
Jul 6, 1:30 PM EDT	Special Weather Statement	AKQ	Chesterfield, Powhatan	45 min
Jul 6, 1:45 PM EDT	Special Weather Statement	AKQ	Cumberland	45 min
Jul 6, 2:26 PM EDT	Special Weather Statement	AKQ	Chesterfield, Henrico, City of Richmond	69 min
Jul 6, 2:33 PM EDT	Severe Thunderstorm Warning	AKQ	Charles City, Chesterfield, Henrico, New Kent, Prince George, City of Hopewell and 1 more	42 min
Jul 6, 2:36 PM EDT	Areal Flood Advisory	AKQ	Amelia, Chesterfield, Cumberland, Fluvanna, Goochland, Henrico and 2 more	54 min
Jul 6, 3:03 PM EDT	Special Weather Statement	AKQ	Goochland	57 min
Jul 6, 3:13 PM EDT	Special Weather Statement	AKQ	Isle of Wight, City of Hampton, City of Newport News, City of Norfolk, City of Poquoson, City of Portsmouth	62 min
Jul 6, 3:16 PM EDT	Special Weather Statement	AKQ	Chesterfield, Nottoway, City of Richmond	59 min
Jul 6, 3:17 PM EDT	Special Weather Statement	AKQ	Charles City, Henrico, Prince George, City of Colonial Heights, City of Hopewell, City of Petersburg	58 min
Jul 6, 3:28 PM EDT	Severe Thunderstorm Warning	AKQ	Charles City, Chesterfield, Dinwiddie, Henrico, James City, Prince George and 6 more	47 min
Jul 6, 3:46 PM EDT	Special Marine Warning	AKQ		74 min
Jul 6, 3:59 PM EDT	Areal Flood Advisory	AKQ	Charles City, Chesterfield, Dinwiddie, Prince George, City of Colonial Heights, City of Hopewell and 1 more	61 min
Jul 6, 4:06 PM EDT	Special Weather Statement	AKQ	Greensville	54 min
Jul 6, 4:17 PM EDT	Special Weather Statement	AKQ	Charles City, Isle of Wight, James City, Surry, Sussex, City of Newport News and 1 more	43 min
Jul 6, 4:19 PM EDT	Special Weather Statement	AKQ	Brunswick, Lunenburg, Mecklenburg	71 min
Jul 6, 4:34 PM EDT	Severe Thunderstorm Warning	AKQ	Charles City, Gloucester, Isle of Wight, James City, Surry, York and 2 more	40 min
Jul 6, 5:11 PM EDT	Special Weather Statement	AKQ	Greensville, Isle of Wight, Southampton, City of Emporia, City of Franklin	64 min
Jul 6, 5:41 PM EDT	Special Weather Statement	AKQ	Mecklenburg	49 min
Jul 6, 5:52 PM EDT	Special Weather Statement	AKQ	Isle of Wight, York, City of Chesapeake, City of Hampton, City of Newport News, City of Norfolk and 4 more	68 min
Jul 6, 5:53 PM EDT	Severe Thunderstorm Warning	AKQ	City of Chesapeake, City of Suffolk	52 min
Jul 6, 5:58 PM EDT	Areal Flood Advisory	AKQ	York, City of Chesapeake, City of Hampton, City of Newport News, City of Norfolk, City of Poquoson and 3 more	92 min
Jul 6, 6:01 PM EDT	Severe Thunderstorm Warning	AKQ	Isle of Wight, City of Chesapeake, City of Newport News, City of Norfolk, City of Portsmouth, City of Suffolk and 1 more	44 min
Jul 6, 6:07 PM EDT	Special Marine Warning	AKQ		83 min
Jul 6, 6:07 PM EDT	Special Weather Statement	AKQ	Accomack	53 min
Jul 6, 6:15 PM EDT	Special Weather Statement	AKQ	York, City of Hampton, City of Newport News, City of Poquoson	60 min
Jul 6, 6:35 PM EDT	Special Weather Statement	AKQ	Brunswick, Greensville, City of Emporia	55 min
Jul 6, 7:03 PM EDT	Special Weather Statement	AKQ	City of Chesapeake, City of Norfolk, City of Virginia Beach	57 min
Jul 6, 7:28 PM EDT	Areal Flood Advisory	AKQ	City of Chesapeake, City of Virginia Beach	2 hr
Jul 6, 1:24 PM EDT	Special Weather Statement	AKQ	Bertie	71 min
Jul 6, 2:18 PM EDT	Special Weather Statement	AKQ	Pasquotank, Perquimans	72 min
Jul 6, 6:03 PM EDT	Special Weather Statement	AKQ	Chowan, Perquimans	57 min
Jul 6, 6:18 PM EDT	Special Weather Statement	AKQ	Gates	57 min
Jul 6, 12:43 PM EDT	Special Weather Statement	AKQ	Worcester	62 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2011 Every 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.