Alert archive / Virginia / Special Weather Statements in 2011

Special Weather Statement, NWS Blacksburg, VA

April 9, 2011Smyth County, Virginia

NWS Blacksburg, VA issued this special weather statement at Apr 9, 2011, 2:22 AM EDT for Smyth County, Virginia. It was in force for 53 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: Apr 9, 2011, 2:22 AM EDT (06:22 UTC)
Expired: Apr 9, 2011, 3:15 AM EDT
In force: 53 min
Issued by: NWS Blacksburg, VA

County Smyth County, VA

The radar

The Roanoke radar (KFCX), 116 km from the middle of the area, began a volume at 06:25 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 00:00Z, 6.4 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: 42 J/kg
Mixed-layer CIN: -165 J/kg
Mixed-layer LCL: 1618 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 279 m²/s²
0-3 km storm-relative helicity: 424 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.3

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 Apr 9, 2:12 AM EDT, 10 minutes earlier.

Area forecast discussion, Apr 9, 2:12 AM EDT, 10 minutes before

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Hazardous weather outlook, Apr 8, 11:42 PM EDT, 2 hours 40 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BLACKSBURG VA
1142 PM EDT FRI APR 8 2011

NCZ001>005-018>020-VAZ007-009>013-015>017-032-043-WVZ042-100345-
ASHE-ALLEGHANY NC-SURRY-STOKES-ROCKINGHAM-WATAUGA-WILKES-YADKIN-
TAZEWELL-SMYTH-BLAND-GILES-WYTHE-PULASKI-GRAYSON-CARROLL-FLOYD-
PATRICK-HENRY-MERCER-
1142 PM EDT FRI APR 8 2011

...SEVERE THUNDERSTORM WATCH 110 IN EFFECT UNTIL 5 AM EDT SATURDAY...

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

CLUSTERS OF STRONG TO SEVERE THUNDERSTORMS PRODUCING DAMAGING
WINDS AND HAIL COULD STILL POSSIBLE INTO THE OVERNIGHT. REFERENCE
SEVERE THUNDERSTORM WATCH NUMBER 110.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

THUNDERSTORMS COULD BE STRONG TO SEVERE SATURDAY AFTERNOON.
STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE AGAIN MONDAY.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

NCZ006-VAZ014-018>020-022>024-033>035-044>047-058-059-WVZ043>045-
100345-
CASWELL-MONTGOMERY-CRAIG-ALLEGHANY VA-BATH-ROANOKE-BOTETOURT-
ROCKBRIDGE-FRANKLIN-BEDFORD-AMHERST-PITTSYLVANIA-CAMPBELL-APPOMATTOX-
BUCKINGHAM-HALIFAX-CHARLOTTE-SUMMERS-MONROE-GREENBRIER-
1142 PM EDT FRI APR 8 2011

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

.DAY ONE...TONIGHT.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

STRONG TO SEVERE THUNDERSTORMS WILL BE POSSIBLE MONDAY AFTERNOON
AND EVENING WITH THE PASSAGE OF A STRONG COLD FRONT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Local storm report, Apr 9, 1:27 AM EDT, 55 minutes before

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Local storm report, Apr 9, 1:35 AM EDT, 47 minutes before

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Special weather statement, Apr 9, 1:46 AM EDT, 36 minutes before

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Local storm report, Apr 9, 1:50 AM EDT, 32 minutes before

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Local storm report, Apr 9, 1:55 AM EDT, 27 minutes before

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Special weather statement, Apr 9, 2:22 AM EDT, 0 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
Apr 8, 8:03 PM EDT	Special Weather Statement	RNK	Pittsylvania	27 min
Apr 8, 8:29 PM EDT	Tornado Warning	RNK	Patrick	31 min
Apr 8, 8:30 PM EDT	Severe Thunderstorm Warning	RNK	Henry, Patrick	30 min
Apr 8, 9:00 PM EDT	Severe Thunderstorm Warning	RNK	Henry	41 min
Apr 8, 9:29 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Giles	31 min
Apr 8, 9:50 PM EDT	Severe Thunderstorm Warning	RNK	Giles, Montgomery, Pulaski, City of Radford	25 min
Apr 8, 9:58 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Pulaski, Wythe	32 min
Apr 8, 10:00 PM EDT	Severe Thunderstorm Warning	RNK	Bland	30 min
Apr 8, 10:15 PM EDT	Severe Thunderstorm Warning	RNK	Floyd, Montgomery, Pulaski	30 min
Apr 8, 10:29 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Wythe	14 min
Apr 8, 10:37 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Floyd, Pulaski	23 min
Apr 8, 10:52 PM EDT	Special Weather Statement	RNK	Henry, City of Martinsville	38 min
Apr 8, 10:59 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Floyd, Patrick	31 min
Apr 8, 11:11 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Smyth, Tazewell, Wythe	49 min
Apr 8, 11:24 PM EDT	Special Weather Statement	RNK	Henry	36 min
Apr 9, 12:00 AM EDT	Severe Thunderstorm Warning	RNK	Bland, Carroll, Grayson, Smyth, Wythe	30 min
Apr 9, 12:27 AM EDT	Severe Thunderstorm Warning	RNK	Carroll, Grayson, Wythe, City of Galax	48 min
Apr 9, 12:56 AM EDT	Tornado Warning	RNK	Carroll, Grayson	34 min
Apr 9, 2:34 AM EDT	Severe Thunderstorm Warning	RNK	Grayson, Smyth	41 min
Apr 9, 2:50 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Grayson, Smyth, Wythe	85 min
Apr 9, 2:56 PM EDT	Tornado Warning	RNK	Smyth	34 min
Apr 9, 3:18 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Smyth, Tazewell, Wythe	57 min
Apr 9, 3:23 PM EDT	Tornado Warning	RNK	Grayson, Smyth	22 min
Apr 9, 3:42 PM EDT	Tornado Warning	RNK	Grayson	33 min
Apr 9, 3:47 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Patrick	58 min
Apr 9, 4:15 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Floyd, Patrick, City of Galax	35 min
Apr 9, 4:29 PM EDT	Special Weather Statement	RNK	Bland, Tazewell	61 min
Apr 9, 4:58 PM EDT	Special Weather Statement	RNK	Grayson, Smyth, Wythe	32 min
Apr 9, 5:09 PM EDT	Special Weather Statement	RNK	Giles, Pulaski, City of Radford	66 min
Apr 9, 5:11 PM EDT	Severe Thunderstorm Warning	RNK	Grayson, Smyth	49 min
Apr 8, 11:33 PM EDT	Special Weather Statement	RNK	Stokes	27 min
Apr 8, 11:58 PM EDT	Severe Thunderstorm Warning	RNK	Rockingham, Stokes	32 min
Apr 9, 12:13 AM EDT	Special Weather Statement	RNK	Stokes	17 min
Apr 9, 1:18 AM EDT	Special Weather Statement	RNK	Surry	57 min
Apr 9, 1:26 AM EDT	Severe Thunderstorm Warning	RNK	Stokes, Surry, Yadkin	35 min
Apr 9, 1:28 AM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Surry, Wilkes, Yadkin	35 min
Apr 9, 1:46 AM EDT	Special Weather Statement	RNK	Ashe	59 min
Apr 9, 2:53 PM EDT	Severe Thunderstorm Warning	RNK	Ashe, Surry, Watauga, Wilkes, Yadkin	67 min
Apr 9, 3:20 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Ashe, Surry, Watauga, Wilkes, Yadkin	55 min
Apr 9, 3:27 PM EDT	Tornado Warning	RNK	Alleghany, Ashe	33 min
Apr 9, 5:01 PM EDT	Special Weather Statement	RNK	Ashe	29 min
Apr 9, 5:36 PM EDT	Special Weather Statement	RNK	Rockingham	24 min
Apr 9, 5:59 PM EDT	Special Weather Statement	RNK	Yadkin	31 min
Apr 9, 6:17 PM EDT	Special Weather Statement	RNK	Caswell	43 min
Apr 8, 9:17 PM EDT	Special Weather Statement	RNK	Mercer	28 min

Nearby

Special Weather Statements in Virginia, 2011 Every special weather statement in 2011

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.