Alert archive / Virginia / Special Weather Statements in 2018

Special Weather Statement, NWS Blacksburg, VA

August 7, 2018Bland County, Tazewell County, Virginia; Mercer County, West Virginia

NWS Blacksburg, VA issued this special weather statement at Aug 7, 2018, 1:35 PM EDT for Bland County, Tazewell County, Virginia; Mercer County, West Virginia. It was in force for 55 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 7, 2018, 1:35 PM EDT (17:35 UTC)
Expired
Aug 7, 2018, 2:30 PM EDT
In force
55 min
Issued by
NWS Blacksburg, VA

Counties Bland County, VA, Tazewell County, VA, Mercer County, WV

The radar

The Roanoke radar (KFCX), 94 km from the middle of the area, began a volume at 17:36 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, 5.6 hours before the alert went out and 159 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-pSkew-T log-p diagram, Roanoke, VA at 12:00Z on 2018-08-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 562 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Roanoke, VA at 12:00Z on 2018-08-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -69 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
562 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
750 m above ground
0-6 km bulk shear
7 kt
0-1 km storm-relative helicity
-69 m²/s²
0-3 km storm-relative helicity
-32 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 Aug 7, 10:35 AM EDT, 3 hours earlier.

Area forecast discussion, Aug 7, 10:35 AM EDT, 3 hours before
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Hazardous weather outlook, Aug 7, 4:10 AM EDT, 9 hours 25 minutes before
Hazardous Weather Outlook
National Weather Service Blacksburg VA
410 AM EDT Tue Aug 7 2018

VAZ007-010>014-016>020-022>024-032>035-043>047-058-059-WVZ042>044-
507-508-080900-
Tazewell-Bland-Giles-Wythe-Pulaski-Montgomery-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-
410 AM EDT Tue Aug 7 2018

This Hazardous Weather Outlook is for central Virginia, south
central Virginia, southwest Virginia, west central Virginia and
southeast West Virginia.

.DAY ONE...Today and tonight.

There is a low probability for widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Some storms Wednesday afternoon and evening may produce locally
damaging wind, especially north of Route 460.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NCZ001>006-018>020-VAZ009-015-080900-
Ashe-Alleghany NC-Surry-Stokes-Rockingham-Caswell-Watauga-Wilkes-
Yadkin-Smyth-Grayson-
410 AM EDT Tue Aug 7 2018

This Hazardous Weather Outlook is for north central North Carolina,
northwest North Carolina and southwest Virginia.

.DAY ONE...Today and tonight.

There is a low probability for widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

There is a low probability for widespread hazardous weather.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Aug 7, 12:10 PM EDT, 1 hour 25 minutes before
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Special weather statement, Aug 7, 12:59 PM EDT, 36 minutes before
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Special weather statement, Aug 7, 1:35 PM EDT, 0 minutes before
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The office that day

Everything else NWS Blacksburg, VA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 7, 12:10 PM EDTSpecial Weather StatementRNKPulaski35 min
Aug 7, 12:59 PM EDTSpecial Weather StatementRNKBath46 min
Aug 7, 3:15 PM EDTSpecial Weather StatementRNKPulaski45 min
Aug 7, 3:25 PM EDTSpecial Weather StatementRNKCity of Roanoke, City of Salem50 min
Aug 7, 3:30 PM EDTSpecial Weather StatementRNKMontgomery45 min
Aug 7, 3:56 PM EDTSpecial Weather StatementRNKFloyd, Montgomery, City of Radford49 min
Aug 7, 4:12 PM EDTSevere Thunderstorm WarningRNKFranklin, Montgomery, Roanoke, City of Roanoke, City of Salem63 min
Aug 7, 4:29 PM EDTSpecial Weather StatementRNKCity of Lynchburg46 min
Aug 7, 4:47 PM EDTAreal Flood AdvisoryRNKAmherst, Bedford, Campbell, City of Lynchburg72 min
Aug 7, 4:56 PM EDTSpecial Weather StatementRNKHenry, Patrick49 min
Aug 7, 5:05 PM EDTSpecial Weather StatementRNKFranklin, Pittsylvania, City of Martinsville40 min
Aug 7, 5:25 PM EDTSpecial Weather StatementRNKCampbell50 min
Aug 7, 5:32 PM EDTSpecial Weather StatementRNKBuckingham58 min
Aug 7, 5:57 PM EDTSpecial Weather StatementRNKHenry, Pittsylvania, City of Danville, City of Martinsville63 min
Aug 7, 6:18 PM EDTSevere Thunderstorm WarningRNKHalifax, Pittsylvania57 min
Aug 7, 6:44 PM EDTSpecial Weather StatementRNKCampbell61 min
Aug 7, 6:51 PM EDTSevere Thunderstorm WarningRNKCampbell, Charlotte, Halifax, Pittsylvania34 min
Aug 7, 7:11 PM EDTSpecial Weather StatementRNKCharlotte49 min
Aug 7, 3:03 PM EDTSpecial Weather StatementRNKStokes42 min
Aug 7, 3:48 PM EDTSpecial Weather StatementRNKStokes57 min
Aug 7, 4:49 PM EDTSpecial Weather StatementRNKYadkin56 min
Aug 7, 4:52 PM EDTSevere Thunderstorm WarningRNKYadkin53 min
Aug 7, 6:59 PM EDTSpecial Weather StatementRNKAlleghany46 min
Aug 7, 7:54 PM EDTSpecial Weather StatementRNKSurry51 min

Nearby

Special Weather Statements in Virginia, 2018Special Weather Statements in West Virginia, 2018Every special weather statement in 2018

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.