Alert archive / Virginia / Special Weather Statements in 2010

Special Weather Statement, NWS Blacksburg, VA

August 17, 2010Botetourt County, Virginia

NWS Blacksburg, VA issued this special weather statement at Aug 17, 2010, 3:08 PM EDT for Botetourt County, Virginia. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Aug 17, 2010, 3:08 PM EDT (19:08 UTC)
Expired: Aug 17, 2010, 3:45 PM EDT
In force: 37 min
Issued by: NWS Blacksburg, VA

County Botetourt County, VA

The radar

The Roanoke radar (KFCX), 68 km from the middle of the area, began a volume at 19:07 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, 7.1 hours before the alert went out and 153 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: 982 J/kg
Mixed-layer CIN: -12 J/kg
Mixed-layer LCL: 716 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 10 m²/s²
0-3 km storm-relative helicity: 13 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 17, 1:56 PM EDT, 1 hour 12 minutes earlier.

Area forecast discussion, Aug 17, 1:56 PM EDT, 1 hour 12 minutes before

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Hazardous weather outlook, Aug 17, 3:57 AM EDT, 11 hours 11 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BLACKSBURG VA
357 AM EDT TUE AUG 17 2010

NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-059-
WVZ042>045-180800-
ASHE-ALLEGHANY NC-SURRY-STOKES-ROCKINGHAM-CASWELL-WATAUGA-WILKES-
YADKIN-TAZEWELL-SMYTH-BLAND-GILES-WYTHE-PULASKI-MONTGOMERY-GRAYSON-
CARROLL-FLOYD-CRAIG-ALLEGHANY VA-BATH-ROANOKE-BOTETOURT-ROCKBRIDGE-
PATRICK-FRANKLIN-BEDFORD-AMHERST-HENRY-PITTSYLVANIA-CAMPBELL-
APPOMATTOX-BUCKINGHAM-HALIFAX-CHARLOTTE-MERCER-SUMMERS-MONROE-
GREENBRIER-
357 AM EDT TUE AUG 17 2010

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

.DAY ONE...TODAY AND TONIGHT.

CLUSTERS OF SHOWERS AND THUNDERSTORMS WILL DEVELOP THIS AFTERNOON
AND THEN BECOME MORE WIDESPREAD OVERNIGHT. VERY HEAVY RAINFALL
WILL AGAIN OCCUR WITH MANY OF THE THUNDERSTORMS...WHICH COULD RESULT IN
LOCALIZED FLASH FLOODING. IN ADDITION...ISOLATED DAMAGING WINDS
MAY OCCUR WITH THE STRONGER STORMS THROUGH THIS EVENING.

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

SCATTERED TO NUMEROUS SHOWERS AND THUNDERSTORMS ARE EXPECTED AGAIN
ON WEDNESDAY. THUNDERSTORMS ARE EXPECTED TO HAVE TORRENTIAL
DOWNPOURS...SO LOCALIZED FLASH FLOODING WILL BE POSSIBLE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Local storm report, Aug 17, 10:12 AM EDT, 4 hours 56 minutes before

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Special weather statement, Aug 17, 2:02 PM EDT, 1 hour 6 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
202 PM EDT TUE AUG 17 2010

VAZ033-034-171900-
BEDFORD VA-FRANKLIN VA-
202 PM EDT TUE AUG 17 2010

...A STRONG THUNDERSTORM WILL AFFECT BEDFORD AND FRANKLIN COUNTIES...

AT 201 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 5 MILES SOUTH OF
MONETA...MOVING EAST AT 15 MPH.

WIND GUSTS TO 40 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.

THIS STORM WILL BE NEAR SMITH MOUNTAIN LAKE STATE PARK AROUND 215 PM
AND HUDDLESTON AROUND 245 PM.

LAT...LON 3708 7943 3705 7973 3715 7980 3728 7940
      3718 7937

Special weather statement, Aug 17, 2:18 PM EDT, 50 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
218 PM EDT TUE AUG 17 2010

VAZ034-044>046-059-171900-
APPOMATTOX VA-BEDFORD VA-CAMPBELL VA-CHARLOTTE VA-PITTSYLVANIA VA-
218 PM EDT TUE AUG 17 2010

...SCATTERED THUNDERSTORMS WILL AFFECT
APPOMATTOX...BEDFORD...CAMPBELL...CHARLOTTE AND PITTSYLVANIA
COUNTIES...

AT 213 PM EDT...A STRONG THUNDERSTORM WAS LOCATED 5 MILES NORTHEAST
OF HURT...MOVING EAST AT 10 MPH.

WIND GUSTS TO 40 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. A QUICK INCH OR TWO
OF RAIN IS POSSIBLE WITH THESE STORMS.

THIS STORM WILL BE NEAR HODGES AROUND 230 PM...LONG ISLAND AROUND 245
PM AND GLADYS AROUND 300 PM.

LAT...LON 3710 7877 3705 7907 3705 7910 3704 7910
      3697 7950 3717 7937 3728 7939 3742 7893

Special weather statement, Aug 17, 3:02 PM EDT, 6 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
302 PM EDT TUE AUG 17 2010

VAZ034-035-045>047-172000-
AMHERST VA-APPOMATTOX VA-BEDFORD VA-BUCKINGHAM VA-CAMPBELL VA-
302 PM EDT TUE AUG 17 2010

...HEAVY RAIN WILL AFFECT
AMHERST...APPOMATTOX...BEDFORD...BUCKINGHAM AND CAMPBELL COUNTIES...

AT 258 PM EDT...SHOWERS WITH HEAVY RAIN WERE ALONG A LINE FROM
RUSTBURG TO 6 MILES WEST OF EVINGTON...MOVING NORTHEAST AT 20 MPH.

WIND GUSTS TO 30 MPH ARE POSSIBLE WITH THESE SHOWERS. VERY HEAVY RAIN
WILL FALL FROM THESE SHOWERS...AND WILL CAUSE WATER TO POND ON ROADS
AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS.

AN INCH OR TWO OF RAIN COULD FALL IN 30 TO 60 MINUTES.

THESE SHOWERS WILL BE NEAR SPRING MILLS AROUND 315 PM...SPOUT SPRING
AROUND 330 PM...APPOMATTOX NATIONAL HISTORIC PARK AROUND 345 PM AND
OAKVILLE AROUND 400 PM.

LAT...LON 3720 7885 3713 7933 3714 7934 3713 7935
      3710 7953 3747 7939 3756 7869

Special weather statement, Aug 17, 3:08 PM EDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
308 PM EDT TUE AUG 17 2010

VAZ022-023-034-171945-
BEDFORD VA-BOTETOURT VA-ROANOKE VA-
308 PM EDT TUE AUG 17 2010

...THUNDERSTORMS WITH HEAVY RAINFALL WILL AFFECT BEDFORD...BOTETOURT
AND ROANOKE COUNTIES...

AT 303 PM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM
TROUTVILLE TO 5 MILES NORTHEAST OF SALEM CITY...MOVING EAST AT 20
MPH.

WIND GUSTS TO 30 MPH ARE POSSIBLE WITH THESE STORMS. VERY HEAVY RAIN
WILL FALL FROM THESE STORMS...AND WILL CAUSE WATER TO POND ON ROADS
AND QUICKLY FILL ROADSIDE DITCHES AND SMALL STREAMS.

AN INCH OR TWO OF RAIN COULD FALL IN 30 TO 60 MINUTES. JUST UNDER AN
INCH OF RAIN FELL IN 15 MINUTES AT DALEVILLE IN BOTETOURT COUNTY.

THESE STORMS WILL BE NEAR HOLLINS AROUND 315 PM...LITHIA AROUND 330
PM AND MONTVALE AROUND 345 PM.

LAT...LON 3754 7947 3731 7966 3731 8010 3752 7989

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 17, 2:02 PM EDT	Special Weather Statement	RNK	Bedford	58 min
Aug 17, 2:18 PM EDT	Special Weather Statement	RNK	Campbell	42 min
Aug 17, 3:02 PM EDT	Special Weather Statement	RNK	Appomattox, Campbell, City of Lynchburg	58 min
Aug 17, 3:33 PM EDT	Special Weather Statement	RNK	Carroll, Grayson, City of Galax	42 min
Aug 17, 3:48 PM EDT	Flash Flood Watch	RNK	Alleghany, Amherst, Appomattox, Bedford, Bland, Botetourt and 30 more	50 hr
Aug 17, 4:17 PM EDT	Flash Flood Warning	RNK	Carroll, Grayson, City of Galax	5 hr
Aug 17, 4:22 PM EDT	Special Weather Statement	RNK	Montgomery	38 min
Aug 17, 4:48 PM EDT	Special Weather Statement	RNK	Rockbridge, City of Lexington	42 min
Aug 17, 6:02 PM EDT	Special Weather Statement	RNK	Smyth	58 min
Aug 17, 6:28 PM EDT	Special Weather Statement	RNK	Bland	62 min
Aug 17, 7:40 PM EDT	Flash Flood Warning	RNK	Grayson, Smyth, Tazewell	2 hr
Aug 17, 6:46 PM EDT	Special Weather Statement	RNK	Ashe, Watauga, Wilkes	59 min
Aug 17, 7:48 PM EDT	Special Weather Statement	RNK	Stokes	57 min

Nearby

Special Weather Statements in Virginia, 2010 Every special weather statement 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.