Alert archive / Virginia / Special Weather Statements in 2012

Special Weather Statement, NWS Blacksburg, VA

February 29, 20124 counties in Virginia

NWS Blacksburg, VA issued this special weather statement at Feb 29, 2012, 10:04 AM EST for 4 counties in Virginia. It was in force for 56 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: Feb 29, 2012, 10:04 AM EST (15:04 UTC)
Expired: Feb 29, 2012, 11:00 AM EST
In force: 56 min
Issued by: NWS Blacksburg, VA

Counties Appomattox County, VA, Bedford County, VA, Buckingham County, VA, City of Lynchburg, VA

The radar

The Roanoke radar (KFCX), 139 km from the middle of the area, began a volume at 15:05 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, 3.1 hours before the alert went out and 68 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 651 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 313 m²/s²
0-3 km storm-relative helicity: 338 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 Feb 29, 9:35 AM EST, 29 minutes earlier.

Area forecast discussion, Feb 29, 9:35 AM EST, 29 minutes before

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Hazardous weather outlook, Feb 29, 4:26 AM EST, 5 hours 38 minutes before

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In the hours before

Special weather statement, Feb 29, 9:41 AM EST, 23 minutes before

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Special weather statement, Feb 29, 9:43 AM EST, 21 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
943 AM EST WED FEB 29 2012

VAZ058-059-291515-
CHARLOTTE VA-HALIFAX VA-
943 AM EST WED FEB 29 2012

...A STRONG THUNDERSTORM WILL AFFECT CHARLOTTE AND HALIFAX
COUNTIES...

AT 939 AM EST...A STRONG THUNDERSTORM WAS LOCATED 6 MILES NORTHWEST
OF CLOVER...MOVING EAST AT 40 MPH.

WIND GUSTS TO 50 MPH AND SMALL HAIL 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 WYLLIESBURG AROUND 950 AM AND KEYSVILLE
AROUND 955 AM.

LISTEN TO NOAA WEATHER RADIO OR YOUR FAVORITE MEDIA OUTLET FOR LATER
UPDATES OR POSSIBLE WARNINGS.

LAT...LON 3689 7848 3671 7863 3669 7863 3666 7885
      3715 7885 3720 7883 3723 7878 3723 7868
      3720 7868 3720 7864 3717 7863 3715 7859
      3715 7853 3709 7848 3708 7844

KK

Special weather statement, Feb 29, 10:04 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
Feb 29, 9:41 AM EST	Special Weather Statement	RNK	Amherst, Botetourt, Rockbridge, City of Buena Vista, City of Lexington	64 min
Feb 29, 9:43 AM EST	Special Weather Statement	RNK	Charlotte	32 min
Feb 29, 10:11 AM EST	Special Weather Statement	RNK	Franklin	64 min
Feb 29, 10:32 AM EST	Special Weather Statement	RNK	Campbell	43 min
Feb 29, 4:07 PM EST	Severe Thunderstorm Warning	RNK	Alleghany, Bath	53 min
Feb 29, 4:23 PM EST	Severe Thunderstorm Warning	RNK	Alleghany	38 min
Feb 29, 5:00 PM EST	Special Weather Statement	RNK	Alleghany, Bath, City of Covington	30 min
Feb 29, 5:12 PM EST	Severe Thunderstorm Warning	RNK	Giles	48 min
Feb 29, 5:17 PM EST	Severe Thunderstorm Warning	RNK	Alleghany, Bath, Rockbridge, City of Lexington	28 min
Feb 29, 5:41 PM EST	Special Weather Statement	RNK	City of Buena Vista	49 min
Feb 29, 5:44 PM EST	Special Weather Statement	RNK	City of Covington	31 min
Feb 29, 5:47 PM EST	Areal Flood Warning	RNK	Alleghany, Bath, Botetourt, Craig, Rockbridge, City of Covington and 1 more	6 hr
Feb 29, 6:15 PM EST	Severe Thunderstorm Warning	RNK	Giles	26 min
Feb 29, 6:24 PM EST	Special Weather Statement	RNK	Buckingham	36 min
Feb 29, 6:53 PM EST	Special Weather Statement	RNK	Tazewell	22 min
Feb 29, 4:34 PM EST	Areal Flood Advisory	RNK	Greenbrier, Mercer, Summers	3 hr
Feb 29, 4:53 PM EST	Special Weather Statement	RNK	Summers	37 min
Feb 29, 6:06 PM EST	Special Weather Statement	RNK	Mercer	24 min

Nearby

Special Weather Statements in Virginia, 2012 Every special weather statement in 2012

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.