Alert archive / Virginia / Special Weather Statements in 2021

Special Weather Statement, NWS Blacksburg, VA

November 12, 202112 counties in Virginia; Rockingham County, North Carolina

NWS Blacksburg, VA issued this special weather statement at Nov 12, 2021, 1:56 AM EST for 12 counties in Virginia; Rockingham County, North Carolina. It was in force for 49 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: Nov 12, 2021, 1:56 AM EST (06:56 UTC)
Expired: Nov 12, 2021, 2:45 AM EST
In force: 49 min
Issued by: NWS Blacksburg, VA
Hail: 0.00 in
Wind: 30

Counties Rockingham County, NC, Amherst County, VA, Bedford County, VA, Campbell County, VA, City of Buena Vista, VA, City of Danville, VA, City of Lexington, VA, City of Lynchburg, VA, City of Martinsville, VA, Franklin County, VA, Henry County, VA, Pittsylvania County, VA, Rockbridge County, VA

The radar

The Roanoke radar (KFCX), 117 km from the middle of the area, began a volume at 06:54 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, 6.9 hours before the alert went out and 174 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: 73 J/kg
Mixed-layer CIN: -22 J/kg
Mixed-layer LCL: 1037 m above ground
0-6 km bulk shear: 57 kt
0-1 km storm-relative helicity: 282 m²/s²
0-3 km storm-relative helicity: 361 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

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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 Nov 12, 1:15 AM EST, 41 minutes earlier.

Area forecast discussion, Nov 12, 1:15 AM EST, 41 minutes before

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Hazardous weather outlook, Nov 11, 5:34 PM EST, 8 hours 22 minutes before

Hazardous Weather Outlook
National Weather Service Blacksburg VA
534 PM EST Thu Nov 11 2021

NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-059-
WVZ042>044-507-508-122245-
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-
Eastern Greenbrier-Western Greenbrier-
534 PM EST Thu Nov 11 2021

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...Tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Nov 11, 8:46 PM EST, 5 hours 10 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
846 PM EST Thu Nov 11 2021

NCZ004-005-VAZ032-033-043-120215-
Stokes NC-Rockingham NC-Henry VA-Franklin VA-Patrick VA-
846 PM EST Thu Nov 11 2021

...A line of gusty showers will impact portions of northeastern
Stokes, northwestern Rockingham, Henry, southwestern Franklin and
eastern Patrick Counties and the City of Martinsville through 915 PM
EST...

At 844 PM EST, Doppler radar was tracking a line of gusty showers
over Penns Store, or over Spencer, moving east at 30 mph.

HAZARD...Winds in excess of 30 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Eden...
Martinsville...
Mayodan...
Stoneville...
Danbury...
Axton...
and Spencer.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Locally heavy rain will quickly reduce visibility and result in
ponding of water on roadways, standing water in low lying areas, and
minor flooding of creeks, streams, and areas of poor drainage.
Drivers are urged to slow down and use extra caution to avoid
hydroplaning.

&&

LAT...LON 3685 8025 3690 7976 3663 7969 3654 7971
      3654 7967 3645 7965 3639 8020
TIME...MOT...LOC 0144Z 255DEG 28KT 3661 8006

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...30 MPH

ET

Special weather statement, Nov 12, 12:56 AM EST, 1 hour before

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Special weather statement, Nov 12, 1:56 AM EST, 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
Nov 11, 8:46 PM EST	Special Weather Statement	RNK	Henry, City of Martinsville	29 min
Nov 12, 12:56 AM EST	Special Weather Statement	RNK	Alleghany, Botetourt, Carroll, Craig, Floyd, Franklin and 9 more	49 min
Nov 12, 2:09 AM EST	Special Weather Statement	RNK	Henry, City of Martinsville	36 min
Nov 12, 2:15 AM EST	Special Weather Statement	RNK	Bedford, Campbell, City of Lynchburg	60 min

Nearby

Special Weather Statements in Virginia, 2021 Special Weather Statements in North Carolina, 2021 Every special weather statement in 2021

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.