Alert archive / Virginia / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 124, NWS Blacksburg, VA

June 12, 20106 counties in Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Jun 12, 2010, 2:30 PM EDT for 6 counties in Virginia. It was in force for 60 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: Jun 12, 2010, 2:30 PM EDT (18:30 UTC)
Expired: Jun 12, 2010, 3:30 PM EDT
In force: 60 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon

Counties Amherst County, VA, Appomattox County, VA, Bedford County, VA, Buckingham County, VA, Campbell County, VA, City of Lynchburg, VA

The radar

The Roanoke radar (KFCX), 117 km from the middle of the area, began a volume at 18:33 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, 6.5 hours before the alert went out and 47 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: 393 J/kg
Mixed-layer CIN: -54 J/kg
Mixed-layer LCL: 981 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 28 m²/s²
0-3 km storm-relative helicity: 35 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 Blacksburg, VA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 12, 2:16 PM EDT, 14 minutes earlier.

Area forecast discussion, Jun 12, 2:16 PM EDT, 14 minutes before

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Hazardous weather outlook, Jun 12, 12:46 PM EDT, 1 hour 44 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BLACKSBURG VA
1246 PM EDT SAT JUN 12 2010

VAZ007-009>011-018>020-023-024-WVZ042>045-131700-
TAZEWELL-SMYTH-BLAND-GILES-CRAIG-ALLEGHANY VA-BATH-BOTETOURT-
ROCKBRIDGE-MERCER-SUMMERS-MONROE-GREENBRIER-
1246 PM EDT SAT JUN 12 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTHWEST VIRGINIA...WEST
CENTRAL VIRGINIA AND SOUTHEAST WEST VIRGINIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

NUMEROUS THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND TONIGHT.
SOME STORMS MAY HAVE VERY HEAVY RAIN...HAIL AND GUSTY WINDS. ANY TRAINING
OF THUNDERSTORMS WITH HEAVY RAIN OVER THE SAME LOCATIONS MAY LEAD TO
FLOODING PROBLEMS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

NCZ001>006-018>020-VAZ012>017-022-032>035-043>047-058-059-131700-
ASHE-ALLEGHANY NC-SURRY-STOKES-ROCKINGHAM-CASWELL-WATAUGA-WILKES-
YADKIN-WYTHE-PULASKI-MONTGOMERY-GRAYSON-CARROLL-FLOYD-ROANOKE-
PATRICK-FRANKLIN-BEDFORD-AMHERST-HENRY-PITTSYLVANIA-CAMPBELL-
APPOMATTOX-BUCKINGHAM-HALIFAX-CHARLOTTE-
1246 PM EDT SAT JUN 12 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL NORTH
CAROLINA...NORTHWEST NORTH CAROLINA...CENTRAL VIRGINIA...SOUTH
CENTRAL VIRGINIA...SOUTHWEST VIRGINIA AND WEST CENTRAL VIRGINIA.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SCATTERED THUNDERSTORMS ARE EXPECTED THIS AFTERNOON AND TONIGHT.
SOME THUNDERSTORMS MAY BE SEVERE WITH HEAVY RAIN...HAIL AND
DAMAGING WINDS. ANY TRAINING OF THUNDERSTORMS WITH HEAVY RAIN OVER
THE SAME LOCATIONS COULD LEAD TO LOCAL FLOODING PROBLEMS.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Local storm report, Jun 12, 2:14 PM EDT, 16 minutes before

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Local storm report, Jun 12, 2:15 PM EDT, 15 minutes before

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Special weather statement, Jun 12, 2:15 PM EDT, 15 minutes before

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Local storm report, Jun 12, 2:17 PM EDT, 13 minutes before

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Local storm report, Jun 12, 2:18 PM EDT, 12 minutes before

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Local storm report, Jun 12, 2:20 PM EDT, 10 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 12, 10:24 AM EDT	Special Weather Statement	RNK	Smyth, Tazewell	51 min
Jun 12, 11:36 AM EDT	Special Weather Statement	RNK	Alleghany, Bath, Craig, City of Covington	54 min
Jun 12, 11:50 AM EDT	Severe Thunderstorm Warning	RNK	Bland, Carroll, Floyd, Montgomery, Pulaski, Wythe and 1 more	55 min
Jun 12, 12:21 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Patrick	54 min
Jun 12, 12:37 PM EDT	Severe Thunderstorm Warning	RNK	Floyd, Franklin	53 min
Jun 12, 1:27 PM EDT	Severe Thunderstorm Warning	RNK	Franklin, Henry, Pittsylvania, City of Martinsville	49 min
Jun 12, 1:33 PM EDT	Severe Thunderstorm Warning	RNK	Amherst, Bedford, Botetourt, Franklin, Roanoke, Rockbridge and 4 more	57 min
Jun 12, 2:06 PM EDT	Severe Thunderstorm Warning	RNK	Amherst, Appomattox, Bedford, Campbell, Halifax, Henry and 3 more	54 min
Jun 12, 2:49 PM EDT	Severe Thunderstorm Warning	RNK	Appomattox, Campbell, Charlotte	71 min
Jun 12, 2:55 PM EDT	Special Weather Statement	RNK	City of Danville	50 min
Jun 12, 3:02 PM EDT	Special Weather Statement	RNK	Halifax	58 min
Jun 12, 3:19 PM EDT	Severe Thunderstorm Warning	RNK	Appomattox, Buckingham	41 min
Jun 12, 7:08 PM EDT	Special Weather Statement	RNK	Bland	37 min
Jun 12, 7:46 PM EDT	Special Weather Statement	RNK	Bland, Tazewell	29 min
Jun 12, 7:59 PM EDT	Flash Flood Warning	RNK	Tazewell	6 hr
Jun 12, 1:23 PM EDT	Severe Thunderstorm Warning	RNK	Stokes, Surry, Wilkes, Yadkin	67 min
Jun 12, 2:15 PM EDT	Special Weather Statement	RNK	Rockingham	30 min
Jun 12, 10:28 AM EDT	Special Weather Statement	RNK	Greenbrier, Monroe, Summers	62 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2010 Every severe thunderstorm warning in 2010

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.