Alert archive / Virginia / Special Weather Statements in 2011

Special Weather Statement, NWS Blacksburg, VA

October 13, 2011Bland County, Virginia

NWS Blacksburg, VA issued this special weather statement at Oct 13, 2011, 4:09 PM EDT for Bland County, Virginia. It was in force for 36 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: Oct 13, 2011, 4:09 PM EDT (20:09 UTC)
Expired: Oct 13, 2011, 4:45 PM EDT
In force: 36 min
Issued by: NWS Blacksburg, VA

County Bland County, VA

The radar

The Roanoke radar (KFCX), 82 km from the middle of the area, began a volume at 20:10 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 12:00Z, 8.2 hours before the alert went out and 147 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: 426 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 473 m above ground
0-6 km bulk shear: 38 kt
0-1 km storm-relative helicity: 75 m²/s²
0-3 km storm-relative helicity: 124 m²/s²
Significant tornado parameter: 0.1
Supercell composite: 0.7

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 Oct 13, 3:37 PM EDT, 32 minutes earlier.

Area forecast discussion, Oct 13, 3:37 PM EDT, 32 minutes before

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Hazardous weather outlook, Oct 13, 3:43 PM EDT, 26 minutes before

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In the hours before

Special weather statement, Oct 13, 3:01 PM EDT, 1 hour 8 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
301 PM EDT THU OCT 13 2011

VAZ034-035-045-131930-
AMHERST VA-BEDFORD VA-CAMPBELL VA-
301 PM EDT THU OCT 13 2011

...SCATTERED THUNDERSTORM WILL AFFECT AMHERST...BEDFORD AND CAMPBELL
COUNTIES...

AT 300 PM EDT...A STRONG THUNDERSTORM WAS LOCATED OVER LYNCHBURG
CITY...MOVING NORTHEAST AT 25 MPH.

WIND GUSTS TO 30 MPH ARE POSSIBLE WITH THIS STORM.

THIS STORM WILL BE NEAR ELON AROUND 315 PM...FALCONERVILLE AROUND 325
PM AND AMHERST AROUND 330 PM.

LAT...LON 3779 7920 3779 7918 3766 7895 3755 7889
      3750 7893 3750 7894 3748 7895 3744 7902
      3738 7899 3729 7904 3734 7934 3774 7931
      3779 7927 3782 7923

Special weather statement, Oct 13, 3:21 PM EDT, 48 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
321 PM EDT THU OCT 13 2011

VAZ007-010-WVZ042-131945-
BLAND VA-MERCER WV-TAZEWELL VA-
321 PM EDT THU OCT 13 2011

...A LINE OF THUNDERSTORMS WILL AFFECT BLAND...MERCER AND TAZEWELL
COUNTIES...

AT 317 PM EDT...STRONG THUNDERSTORMS WERE ALONG A LINE FROM 7 MILES
SOUTHWEST OF MATOAKA TO CERES...MOVING NORTHEAST AT 30 MPH.

WIND GUSTS TO 40 MPH AND SMALL HAIL ARE POSSIBLE WITH THESE STORMS.
EXPECT FREQUENT CLOUD TO GROUND LIGHTNING FROM THESE STORMS. DO NOT
STAY IN THE OPEN OR SEEK SHELTER UNDER TREES WHEN LIGHTNING
THREATENS...MOVE INDOORS WHEN A THUNDERSTORM APPROACHES.

THESE STORMS WILL BE NEAR PINNACLE ROCK STATE PARK AROUND 330 PM...
BLUEFIELD AROUND 335 PM...WENONAH AROUND 340 PM AND SANDLICK AROUND
345 PM.

LAT...LON 3733 8138 3741 8133 3742 8129 3746 8131
      3747 8128 3751 8126 3752 8122 3758 8120
      3760 8115 3726 8111 3699 8135 3732 8140

Special weather statement, Oct 13, 3:42 PM EDT, 27 minutes before

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Special weather statement, Oct 13, 3:46 PM EDT, 23 minutes before

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Special weather statement, Oct 13, 4:09 PM 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
Oct 13, 2:01 AM EDT	Flash Flood Warning	RNK	Buckingham	6 hr
Oct 13, 3:01 PM EDT	Special Weather Statement	RNK	Amherst, City of Lynchburg	29 min
Oct 13, 3:42 PM EDT	Special Weather Statement	RNK	Smyth	48 min
Oct 13, 3:46 PM EDT	Special Weather Statement	RNK	City of Danville	29 min
Oct 13, 7:10 PM EDT	Special Weather Statement	RNK	Buckingham	35 min
Oct 13, 3:21 PM EDT	Special Weather Statement	RNK	Mercer	24 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.