Alert archive / Virginia / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 179, NWS Blacksburg, VA

October 8, 2014Bedford County, Franklin County, Roanoke County, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Oct 8, 2014, 1:23 AM EDT for Bedford County, Franklin County, Roanoke County, Virginia. It was in force for 21 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: Oct 8, 2014, 1:23 AM EDT (05:23 UTC)
Expired: Oct 8, 2014, 1:44 AM EDT
In force: 21 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Bedford County, VA, Franklin County, VA, Roanoke County, VA

The radar

The Roanoke radar (KFCX), 44 km from the middle of the area, began a volume at 05:27 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 00:00Z, 5.4 hours before the alert went out and 28 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: 44 J/kg
Mixed-layer CIN: -38 J/kg
Mixed-layer LCL: 671 m above ground
0-6 km bulk shear: 51 kt
0-1 km storm-relative helicity: 488 m²/s²
0-3 km storm-relative helicity: 524 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 Oct 8, 1:22 AM EDT, 1 minute earlier.

Area forecast discussion, Oct 8, 1:22 AM EDT, 1 minute before

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Hazardous weather outlook, Oct 7, 6:19 PM EDT, 7 hours 4 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BLACKSBURG VA
619 PM EDT TUE OCT 7 2014

VAZ007-009>011-018>020-WVZ042>044-507-508-082230-
TAZEWELL-SMYTH-BLAND-GILES-CRAIG-ALLEGHANY VA-BATH-MERCER-SUMMERS-
MONROE-EASTERN GREENBRIER-WESTERN GREENBRIER-
619 PM EDT TUE OCT 7 2014

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

.DAY ONE...TONIGHT.

THERE IS A SMALL THREAT FOR STRONG THUNDERSTORMS THIS
EVENING...WITH THE MAIN THREAT BEING STRONG WIND GUSTS. CANNOT
RULE OUT A FEW GUSTS OVER 50 MPH WITH ISOLATED WIND DAMAGE.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

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>024-032>035-043>047-058-059-082230-
ASHE-ALLEGHANY NC-SURRY-STOKES-ROCKINGHAM-CASWELL-WATAUGA-WILKES-
YADKIN-WYTHE-PULASKI-MONTGOMERY-GRAYSON-CARROLL-FLOYD-ROANOKE-
BOTETOURT-ROCKBRIDGE-PATRICK-FRANKLIN-BEDFORD-AMHERST-HENRY-
PITTSYLVANIA-CAMPBELL-APPOMATTOX-BUCKINGHAM-HALIFAX-CHARLOTTE-
619 PM EDT TUE OCT 7 2014

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...TONIGHT.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Local storm report, Oct 8, 12:33 AM EDT, 50 minutes before

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Special weather statement, Oct 8, 12:37 AM EDT, 46 minutes before

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Special weather statement, Oct 8, 1:05 AM EDT, 18 minutes before

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Local storm report, Oct 8, 1:07 AM EDT, 16 minutes before

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Special weather statement, Oct 8, 1:13 AM EDT, 10 minutes before

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Special weather statement, Oct 8, 1:16 AM EDT, 7 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
Oct 7, 8:48 PM EDT	Special Weather Statement	RNK	Bedford	27 min
Oct 7, 8:53 PM EDT	Special Weather Statement	RNK	City of Lynchburg	37 min
Oct 7, 9:01 PM EDT	Special Weather Statement	RNK	Franklin	14 min
Oct 7, 9:14 PM EDT	Special Weather Statement	RNK	Franklin	31 min
Oct 7, 9:16 PM EDT	Special Weather Statement	RNK	Campbell	29 min
Oct 7, 9:23 PM EDT	Special Weather Statement	RNK	Appomattox	52 min
Oct 7, 9:41 PM EDT	Special Weather Statement	RNK	Pittsylvania	34 min
Oct 8, 12:09 AM EDT	Severe Thunderstorm Warning	RNK	Giles	30 min
Oct 8, 12:12 AM EDT	Special Weather Statement	RNK	Tazewell	48 min
Oct 8, 12:19 AM EDT	Special Weather Statement	RNK	City of Roanoke	41 min
Oct 8, 12:29 AM EDT	Severe Thunderstorm Warning	RNK	Bland, Giles, Pulaski, Tazewell, Wythe	61 min
Oct 8, 12:31 AM EDT	Severe Thunderstorm Warning	RNK	Bedford, Botetourt	43 min
Oct 8, 12:37 AM EDT	Special Weather Statement	RNK	Montgomery, Roanoke, City of Roanoke, City of Salem	53 min
Oct 8, 1:05 AM EDT	Special Weather Statement	RNK	Roanoke, City of Roanoke, City of Salem	55 min
Oct 8, 1:10 AM EDT	Areal Flood Advisory	RNK	Tazewell	4 hr
Oct 8, 1:13 AM EDT	Special Weather Statement	RNK	Appomattox, City of Lynchburg	47 min
Oct 8, 1:16 AM EDT	Special Weather Statement	RNK	Montgomery, Pulaski, City of Radford	44 min
Oct 8, 1:43 AM EDT	Special Weather Statement	RNK	Campbell	47 min
Oct 8, 2:56 AM EDT	Special Weather Statement	RNK	Grayson, Smyth	64 min
Oct 8, 4:16 AM EDT	Special Weather Statement	RNK	Stokes, Surry	44 min
Oct 7, 9:25 PM EDT	Special Weather Statement	RNK	Greenbrier	35 min
Oct 7, 10:03 PM EDT	Special Weather Statement	RNK	Monroe	42 min
Oct 7, 10:36 PM EDT	Special Weather Statement	RNK	Summers	39 min
Oct 7, 10:42 PM EDT	Severe Thunderstorm Warning	RNK	Mercer, Summers	34 min
Oct 7, 11:10 PM EDT	Special Weather Statement	RNK	Monroe	35 min
Oct 7, 11:29 PM EDT	Special Weather Statement	RNK	Mercer	31 min
Oct 7, 11:32 PM EDT	Severe Thunderstorm Warning	RNK	Mercer	43 min
Oct 7, 11:39 PM EDT	Tornado Warning	RNK	Mercer	24 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2014 Every severe thunderstorm warning in 2014

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.