Alert archive / Virginia / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 261, NWS Blacksburg, VA

August 4, 20108 counties in Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Aug 4, 2010, 9:14 PM EDT for 8 counties in Virginia. It was in force for 61 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, 2010, 9:14 PM EDT (01:14 UTC)
Expired: Aug 4, 2010, 10:15 PM EDT
In force: 61 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, Charlotte County, VA, City of Lynchburg, VA, Halifax County, VA

The radar

The Roanoke radar (KFCX), 118 km from the middle of the area, began a volume at 01:14 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Aug 4, 5:52 PM EDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Roanoke, VA (KRNK), launched 00:00Z, 1.2 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: 171 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 1258 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 8 m²/s²
0-3 km storm-relative helicity: 30 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 Aug 4, 8:49 PM EDT, 25 minutes earlier.

Area forecast discussion, Aug 4, 8:49 PM EDT, 25 minutes before

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Hazardous weather outlook, Aug 4, 6:06 PM EDT, 3 hours 8 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BLACKSBURG VA
606 PM EDT WED AUG 4 2010

VAZ010-011-013-014-017>020-022>024-032>035-043>047-WVZ042>045-052215-
BLAND-GILES-PULASKI-MONTGOMERY-FLOYD-CRAIG-ALLEGHANY VA-BATH-ROANOKE-
BOTETOURT-ROCKBRIDGE-PATRICK-FRANKLIN-BEDFORD-AMHERST-HENRY-
PITTSYLVANIA-CAMPBELL-APPOMATTOX-BUCKINGHAM-MERCER-SUMMERS-MONROE-
GREENBRIER-
606 PM EDT WED AUG 4 2010

...SEVERE THUNDERSTORM WATCH 570 IN EFFECT UNTIL 1 AM EDT THURSDAY...

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

.DAY ONE...TONIGHT.

PLEASE LISTEN TO NOAA WEATHER RADIO OR GO TO WEATHER.GOV ON THE
INTERNET FOR MORE INFORMATION ABOUT THE FOLLOWING HAZARDS.

   SEVERE THUNDERSTORM WATCH.

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

THUNDERSTORMS AHEAD OF A SLOW MOVING COLD FRONT MAY PRODUCE VERY
HEAVY DOWNPOURS THURSDAY AFTERNOON INTO THURSDAY NIGHT. IN
ADDITION...A FEW OF THE STORMS MAY BE STRONG TO SEVERE...WITH
LARGE HAIL AND DAMAGING WINDS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL LIKELY BE NEEDED THIS EVENING.

NCZ001>004-018>020-VAZ007-009-012-015-016-052215-
ASHE-ALLEGHANY NC-SURRY-STOKES-WATAUGA-WILKES-YADKIN-TAZEWELL-SMYTH-
WYTHE-GRAYSON-CARROLL-
606 PM EDT WED AUG 4 2010

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

.DAY ONE...TONIGHT.

SCATTERED SHOWERS AND THUNDERSTORMS WILL DEVELOP THIS EVENING INTO
TONIGHT. SOME OF THE STORM COULD CONTAIN HEAVY RAINFALL AND GUSTY
WINDS.

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

THUNDERSTORMS AHEAD OF A SLOW MOVING COLD FRONT MAY PRODUCE VERY
HEAVY DOWNPOURS THURSDAY AFTERNOON INTO THURSDAY NIGHT. IN
ADDITION...A FEW OF THE STORMS MAY BE STRONG TO SEVERE...WITH
LARGE HAIL AND DAMAGING WINDS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TONIGHT.

NCZ005-006-VAZ058-059-052215-
ROCKINGHAM-CASWELL-HALIFAX-CHARLOTTE-
606 PM EDT WED AUG 4 2010

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

.DAY ONE...TONIGHT.

ISOLATED STRONG THUNDERSTORMS ARE POSSIBLE THIS EVENING INTO
TONIGHT WITH GUSTY WINDS AND HEAVY RAINS.

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

THUNDERSTORMS AHEAD OF A SLOW MOVING COLD FRONT MAY PRODUCE VERY
HEAVY DOWNPOURS THURSDAY AFTERNOON INTO THURSDAY NIGHT. IN
ADDITION...A FEW OF THE STORMS MAY BE STRONG TO SEVERE...WITH
LARGE HAIL AND DAMAGING WINDS.

ALSO...THE HEAT INDICES THURSDAY AFTERNOON ARE EXPECTED TO RANGE
FROM 100 TO 104 DEGREES.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TONIGHT.

RCS

In the hours before

Special weather statement, Aug 4, 6:26 PM EDT, 2 hours 48 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
626 PM EDT WED AUG 4 2010

VAZ032-033-043-044-042330-
FRANKLIN VA-HENRY VA-PATRICK VA-PITTSYLVANIA VA-
626 PM EDT WED AUG 4 2010

...A STRONG THUNDERSTORM WILL AFFECT FRANKLIN...HENRY...PATRICK AND
PITTSYLVANIA COUNTIES...

AT 624 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 3 MILES SOUTHWEST
OF FERRUM...MOVING SOUTHEAST AT 25 MPH.

WIND GUSTS TO 30 MPH ARE POSSIBLE WITH THIS STORM. VERY HEAVY RAIN
WILL FALL FROM THIS STORM...AND WILL CAUSE WATER TO POND ON ROADS AND
QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS. EXPECT FREQUENT
CLOUD TO GROUND LIGHTNING FROM THIS STORM. DO NOT STAY IN THE OPEN OR
SEEK SHELTER UNDER TREES WHEN LIGHTNING THREATENS...MOVE INDOORS WHEN
A THUNDERSTORM APPROACHES.

THIS STORM WILL BE NEAR PHILPOTT DAM AROUND 635 PM...BASSETT AROUND
640 PM...OAK LEVEL...AND STANLEYTOWN AROUND 645 PM...SYDNORSVILLE...
AND FIELDALE AROUND 650 PM...FIGSBORO...COLLINSVILLE...AND VILLA
HEIGHTS AROUND 655 PM AND MARTINSVILLE CITY AROUND 700 PM.

LISTEN TO NOAA WEATHER RADIO OR YOUR FAVORITE MEDIA OUTLET FOR LATER
UPDATES OR POSSIBLE WARNINGS.

LAT...LON 3681 7955 3658 7979 3681 8021 3706 8005

RB

Local storm report, Aug 4, 6:39 PM EDT, 2 hours 35 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE BLACKSBURG VA
639 PM EDT WED AUG 04 2010

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

0634 PM     TSTM WND DMG     RUPERT                  37.95N 80.68W
08/04/2010                   GREENBRIER         WV   PUBLIC

            LARGE TREE LIMBS DOWN, WEST END OF TOWN.

&&

BS

Local storm report, Aug 4, 8:24 PM EDT, 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
824 PM EDT WED AUG 04 2010

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

0755 PM     TSTM WND DMG     RICH CREEK              37.38N 80.83W
08/04/2010                   GILES              VA   PUBLIC

            20 FT PEAR TREE DOWN.

&&

BS

Local storm report, Aug 4, 8:54 PM EDT, 20 minutes before

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Local storm report, Aug 4, 9:08 PM EDT, 6 minutes before

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Local storm report, Aug 4, 9:11 PM EDT, 3 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
Aug 4, 8:02 PM EDT	Severe Thunderstorm Warning	RNK	Amherst, Bedford, Rockbridge, City of Buena Vista, City of Lexington, City of Lynchburg	58 min
Aug 4, 8:21 PM EDT	Severe Thunderstorm Warning	RNK	Amherst, Appomattox, Bedford, Campbell, Charlotte, Halifax and 2 more	54 min
Aug 4, 8:31 PM EDT	Severe Thunderstorm Warning	RNK	Buckingham	59 min
Aug 4, 8:36 PM EDT	Flash Flood Warning	RNK	Bland, Smyth, Tazewell	98 min
Aug 4, 8:50 PM EDT	Severe Thunderstorm Warning	RNK	Bedford, Campbell, Franklin, Halifax, Henry, Pittsylvania and 1 more	43 min
Aug 4, 8:55 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Carroll, Giles, Grayson, Pulaski, Smyth and 2 more	65 min
Aug 4, 10:11 PM EDT	Special Weather Statement	RNK	City of Danville	64 min
Aug 5, 3:51 AM EDT	Flash Flood Watch	RNK	Bath, Bland, Grayson, Smyth, Tazewell, Wythe	16 hr
Aug 5, 12:14 PM EDT	Heat Advisory	RNK	Appomattox, Buckingham, Campbell, Charlotte, Halifax, Pittsylvania and 2 more	5 hr
Aug 5, 1:18 PM EDT	Severe Thunderstorm Warning	RNK	Bath, Rockbridge	42 min
Aug 5, 1:42 PM EDT	Special Weather Statement	RNK	Tazewell	33 min
Aug 5, 2:21 PM EDT	Severe Thunderstorm Warning	RNK	Grayson	54 min
Aug 5, 2:23 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Tazewell	67 min
Aug 5, 2:33 PM EDT	Special Weather Statement	RNK	Bland, Smyth, Tazewell, Wythe	57 min
Aug 5, 2:45 PM EDT	Severe Thunderstorm Warning	RNK	Franklin, Henry, Patrick, Pittsylvania, City of Martinsville	60 min
Aug 5, 2:46 PM EDT	Severe Thunderstorm Warning	RNK	Botetourt, Craig	59 min
Aug 5, 2:57 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Bath, Giles, City of Covington	63 min
Aug 5, 2:58 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Grayson, Smyth, Tazewell, Wythe	62 min
Aug 5, 3:10 PM EDT	Severe Thunderstorm Warning	RNK	Amherst, Bedford, Botetourt, Rockbridge, City of Buena Vista, City of Lexington and 1 more	65 min
Aug 5, 3:11 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Floyd, Grayson, Patrick, City of Galax	64 min
Aug 5, 3:27 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Giles, Tazewell	63 min
Aug 5, 3:36 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Grayson, Wythe	28 min
Aug 5, 3:38 PM EDT	Severe Thunderstorm Warning	RNK	Floyd, Franklin, Montgomery, Pulaski, City of Radford	67 min
Aug 5, 3:44 PM EDT	Severe Thunderstorm Warning	RNK	Bedford, Botetourt	76 min
Aug 5, 3:49 PM EDT	Severe Thunderstorm Warning	RNK	Henry, Patrick, City of Martinsville	56 min
Aug 5, 3:53 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Smyth, Tazewell	45 min
Aug 5, 3:56 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Bath, Botetourt, Craig, Giles, Montgomery and 2 more	47 min
Aug 5, 4:09 PM EDT	Tornado Warning	RNK	Franklin, Henry	36 min
Aug 5, 4:17 PM EDT	Severe Thunderstorm Warning	RNK	Floyd, Franklin, Henry, Patrick	34 min
Aug 5, 4:26 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Giles, Pulaski, Smyth, Tazewell, Wythe	33 min
Aug 5, 4:36 PM EDT	Flash Flood Warning	RNK	Amherst, Appomattox, Bedford, Campbell, City of Lynchburg	5 hr
Aug 5, 4:38 PM EDT	Flash Flood Warning	RNK	Franklin, Pittsylvania	5 hr
Aug 5, 4:39 PM EDT	Severe Thunderstorm Warning	RNK	Amherst, Bedford, Botetourt, Franklin, Montgomery, Roanoke and 6 more	34 min
Aug 5, 4:43 PM EDT	Severe Thunderstorm Warning	RNK	Bedford, Franklin, Henry, Pittsylvania	62 min
Aug 5, 4:52 PM EDT	Severe Thunderstorm Warning	RNK	Amherst, Appomattox, Bedford, Buckingham, Campbell, Charlotte and 3 more	53 min
Aug 5, 5:00 PM EDT	Severe Thunderstorm Warning	RNK	Bedford	34 min
Aug 5, 5:12 PM EDT	Flash Flood Warning	RNK	Smyth, Tazewell	5 hr
Aug 5, 5:15 PM EDT	Severe Thunderstorm Warning	RNK	Henry, Patrick, City of Martinsville	60 min
Aug 5, 5:25 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Grayson, Smyth, Tazewell, Wythe	80 min
Aug 5, 5:30 PM EDT	Severe Thunderstorm Warning	RNK	Henry	41 min
Aug 5, 5:32 PM EDT	Severe Thunderstorm Warning	RNK	Halifax	42 min
Aug 5, 5:44 PM EDT	Severe Thunderstorm Warning	RNK	Charlotte, Halifax	44 min
Aug 5, 5:51 PM EDT	Flash Flood Warning	RNK	Campbell, Charlotte, Halifax	5 hr
Aug 5, 5:55 PM EDT	Flash Flood Warning	RNK	Grayson, Smyth	5 hr
Aug 5, 6:01 PM EDT	Severe Thunderstorm Warning	RNK	Pittsylvania, City of Danville	59 min
Aug 5, 6:44 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Grayson, Wythe, City of Galax	44 min
Aug 5, 1:31 PM EDT	Severe Thunderstorm Warning	RNK	Wilkes	59 min
Aug 5, 1:55 PM EDT	Flash Flood Warning	RNK	Watauga, Wilkes	6 hr
Aug 5, 2:09 PM EDT	Severe Thunderstorm Warning	RNK	Surry, Wilkes	66 min
Aug 5, 2:26 PM EDT	Severe Thunderstorm Warning	RNK	Wilkes, Yadkin	37 min
Aug 5, 2:49 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Surry	41 min
Aug 5, 4:28 PM EDT	Severe Thunderstorm Warning	RNK	Caswell, Rockingham	62 min
Aug 5, 4:30 PM EDT	Flash Flood Warning	RNK	Watauga	5 hr
Aug 5, 4:55 PM EDT	Severe Thunderstorm Warning	RNK	Caswell	50 min
Aug 5, 6:15 AM EDT	Special Weather Statement	RNK	Greenbrier	45 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.