Alert archive / Virginia / Special Weather Statements in 2012

Special Weather Statement, NWS Blacksburg, VA

August 30, 2012City of Galax, Virginia

NWS Blacksburg, VA issued this special weather statement at Aug 30, 2012, 5:55 PM EDT for City of Galax, Virginia. It was in force for 65 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 30, 2012, 5:55 PM EDT (21:55 UTC)
Expired: Aug 30, 2012, 7:00 PM EDT
In force: 65 min
Issued by: NWS Blacksburg, VA

County City of Galax, VA

The radar

The Roanoke radar (KFCX), 77 km from the middle of the area, began a volume at 21:56 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, 9.9 hours before the alert went out and 126 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: 801 J/kg
Mixed-layer CIN: -43 J/kg
Mixed-layer LCL: 772 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 9 m²/s²
0-3 km storm-relative helicity: 45 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 30, 5:34 PM EDT, 21 minutes earlier.

Area forecast discussion, Aug 30, 5:34 PM EDT, 21 minutes before

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Hazardous weather outlook, Aug 30, 5:30 PM EDT, 25 minutes before

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In the hours before

Special weather statement, Aug 30, 3:50 PM EDT, 2 hours 5 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
350 PM EDT THU AUG 30 2012

NCZ001-002-018-019-VAZ015-302100-
ALLEGHANY NC-ASHE NC-GRAYSON VA-WATAUGA NC-WILKES NC-
350 PM EDT THU AUG 30 2012

...SHOWERS AND ISOLATED THUNDERSTORMS WITH HEAVY RAIN WILL AFFECT
ALLEGHANY...ASHE...GRAYSON...WATAUGA AND WILKES COUNTIES...

AT 348 PM EDT...SHOWERS AND ISOLATED THUNDERSTORMS WITH HEAVY RAIN
WERE ALONG A LINE FROM 4 MILES SOUTHWEST OF MOUTH OF WILSON TO 10
MILES WEST OF BOOMER...MOVING EAST AT 10 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.

THESE SHOWERS WILL BE NEAR VOLNEY AROUND 355 PM...GLENDALE SPRINGS
AROUND 400 PM...ELKVILLE...AND MAPLE SPRINGS AROUND 405 PM...MOUTH OF
WILSON AROUND 420 PM...PINEY CREEK AROUND 440 PM AND WILBAR AROUND
445 PM.

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

LAT...LON 3631 8190 3636 8181 3635 8173 3641 8175
      3647 8170 3654 8171 3662 8165 3663 8109
      3603 8115 3602 8125 3599 8133 3607 8142
      3611 8155 3611 8181 3619 8185 3621 8191
      3627 8190 3629 8192

KK

Special weather statement, Aug 30, 5:10 PM EDT, 45 minutes before

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Special weather statement, Aug 30, 5:55 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
Aug 30, 3:50 PM EDT	Special Weather Statement	RNK	Alleghany, Ashe, Watauga, Wilkes	70 min
Aug 30, 5:10 PM EDT	Special Weather Statement	RNK	Ashe, Watauga, Wilkes	95 min
Aug 30, 6:49 PM EDT	Special Weather Statement	RNK	Watauga	56 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.