Alert archive / Virginia / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 107, NWS Blacksburg, VA

August 5, 2005Botetourt County, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Aug 5, 2005, 5:10 PM EDT for Botetourt County, Virginia. It was in force for 50 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 5, 2005, 5:10 PM EDT (21:10 UTC)
Expired: Aug 5, 2005, 6:00 PM EDT
In force: 50 min
Issued by: NWS Blacksburg, VA
Area: Counties, with a storm outline in the text

County Botetourt County, VA

The radar

The Roanoke radar (KFCX), 72 km from the middle of the area, began a volume at 21:13 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

Greensboro/Hi Pt, NC (KGSO), launched 12:00Z, 9.2 hours before the alert went out and 164 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: 1463 J/kg
Mixed-layer CIN: -42 J/kg
Mixed-layer LCL: 1227 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: -7 m²/s²
0-3 km storm-relative helicity: -9 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 5, 2:54 PM EDT, 2 hours 16 minutes earlier.

Area forecast discussion, Aug 5, 2:54 PM EDT, 2 hours 16 minutes before

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Hazardous weather outlook, Aug 5, 11:52 AM EDT, 5 hours 18 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BLACKSBURG VA
1152 AM EDT FRI AUG 5 2005

NCZ001>006-018>020-VAZ015>017-032>035-043>047-058-059-061600-
ASHE-ALLEGHANY-SURRY-STOKES-ROCKINGHAM-CASWELL-WATAUGA-WILKES-
YADKIN-GRAYSON-CARROLL-FLOYD-PATRICK-FRANKLIN-BEDFORD-AMHERST-
HENRY-PITTSYLVANIA-CAMPBELL-APPOMATTOX-BUCKINGHAM-HALIFAX-
CHARLOTTE-
1152 AM EDT FRI AUG 5 2005

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

THERE IS A GOOD CHANCE OF SCATTERED THUNDERSTORMS LATER SATURDAY
WHICH MAY PRODUCE AREAS OF HEAVY RAINFALL AND STRONG WINDS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

VAZ007-009>014-018>020-022>024-WVZ042>045-061600-
TAZEWELL-SMYTH-BLAND-GILES-WYTHE-PULASKI-MONTGOMERY-CRAIG-
ALLEGHANY-BATH-ROANOKE-BOTETOURT-ROCKBRIDGE-MERCER-SUMMERS-MONROE-
GREENBRIER-
1152 AM EDT FRI AUG 5 2005

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERSTORMS WILL BE DEVELOPING LATE TODAY INTO THIS
EVENING AS A COLD FRONT PUSHES SLOWLY INTO THE AREA. THESE STORMS
MAY PRODUCE STRONG DOWNBURST WINDS AND BRIEF HEAVY RAINFALL.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY

SCATTERED STORMS ARE MORE LIKELY SATURDAY AFTERNOON WHICH MAY
AGAIN PRODUCE AREA OF HEAVY RAINFALL AND STRONG DOWNBURST WINDS.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

In the hours before

Special weather statement, Aug 5, 2:14 PM EDT, 2 hours 56 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
214 PM EDT FRI AUG 5 2005

NCZ003-VAZ016-051915-

CARROLL VA-SURRY NC-
214 PM EDT FRI AUG 5 2005

...PULSE THUNDERSTORMS OVER CARROLL AND SURRY COUNTIES...

AT 211 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM 3 MILES SOUTHWEST OF FANCY GAP...MOVING SOUTHWEST AT 5
MPH.  THIS STORM IS CAPABLE OF PRODUCING PEA TO DIME SIZE
HAIL...GUSTY WINDS OF 45 MPH AND FREQUENT CLOUD TO GROUND LIGHTNING.

RCS

Local storm report, Aug 5, 3:12 PM EDT, 1 hour 58 minutes before

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Special weather statement, Aug 5, 3:16 PM EDT, 1 hour 54 minutes before

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Special weather statement, Aug 5, 3:27 PM EDT, 1 hour 43 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
327 PM EDT FRI AUG 5 2005

VAZ018-052030-

CRAIG VA-
327 PM EDT FRI AUG 5 2005

...PULSE THUNDERSTORMS OVER CRAIG COUNTY...

AT 322 PM EDT NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
THUNDERSTORM 2 MILES NORTH OF SINKING CREEK...MOVING NORTHWEST AT 5
MPH. THIS STORM IS CAPABLE OF PRODUCING PEA TO DIME SIZE
HAIL...GUSTY WINDS UP TO 45 MPH AND FREQUENT CLOUD TO GROUND
LIGHTNING.

RCS

Local storm report, Aug 5, 4:48 PM EDT, 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
448 PM EDT FRI AUG 05 2005

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

0425 PM     TSTM WND DMG     RADFORD                 37.13N 80.57W
08/05/2005                   RADFORD            VA   TRAINED SPOTTER

            TWO TREES DOWN ALONG ROUTE 232 BETWEEN RADFORD AND
            INTERSTATE 81. ONE FELL ONTO A POWERLINE. WINDS WERE
            ESTIMATED AT 60 MPH.

&&

PMANUEL

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 5, 2:29 PM EDT	Severe Thunderstorm Warning	RNK	Carroll	34 min
Aug 5, 4:12 PM EDT	Severe Thunderstorm Warning	RNK	Montgomery, Pulaski, City of Radford	49 min
Aug 5, 1:08 PM EDT	Severe Thunderstorm Warning	RNK	Wilkes	34 min
Aug 5, 7:24 PM EDT	Severe Thunderstorm Warning	RNK	Greenbrier	51 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2005 Every severe thunderstorm warning in 2005

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.