Alert archive / Virginia / Special Weather Statements in 2015

Special Weather Statement, NWS Blacksburg, VA

August 5, 2015Floyd County, Montgomery County, Virginia

NWS Blacksburg, VA issued this special weather statement at Aug 5, 2015, 10:07 PM EDT for Floyd County, Montgomery County, Virginia. It was in force for 38 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 5, 2015, 10:07 PM EDT (02:07 UTC)
Expired
Aug 5, 2015, 10:45 PM EDT
In force
38 min
Issued by
NWS Blacksburg, VA

Counties Floyd County, VA, Montgomery County, VA

The radar

The Roanoke radar (KFCX), 9 km from the middle of the area, began a volume at 02:08 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 00:00Z, 2.1 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-pSkew-T log-p diagram, Roanoke, VA at 00:00Z on 2015-08-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 446 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 00:00Z on 2015-08-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 22 square meters per square second.19395878Sfc1 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
446 J/kg
Mixed-layer CIN
-43 J/kg
Mixed-layer LCL
1667 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
22 m²/s²
0-3 km storm-relative helicity
69 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 Aug 5, 7:29 PM EDT, 2 hours 38 minutes earlier.

Area forecast discussion, Aug 5, 7:29 PM EDT, 2 hours 38 minutes before
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Hazardous weather outlook, Aug 5, 4:04 PM EDT, 6 hours 3 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BLACKSBURG VA
404 PM EDT WED AUG 5 2015

NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-059-
WVZ042>044-507-508-062015-
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-
404 PM EDT WED AUG 5 2015

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...THIS AFTERNOON AND TONIGHT.

HAZARDOUS WEATHER IS NOT EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY.

WIDESPREAD RAINFALL IS EXPECTED THURSDAY THROUGH EARLY FRIDAY
MORNING. LOCALLY HEAVY RAINFALL IS POSSIBLE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Special weather statement, Aug 5, 9:21 PM EDT, 46 minutes before
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Local storm report, Aug 5, 9:27 PM EDT, 40 minutes before
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Special weather statement, Aug 5, 9:30 PM EDT, 37 minutes before
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Local storm report, Aug 5, 9:31 PM EDT, 36 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
931 PM EDT WED AUG 05 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0855 PM     TSTM WND DMG     LAWSONVILLE             36.48N 80.25W
08/05/2015                   STOKES             NC   911 CALL CENTER

            MULTIPLE TREES DOWN THROUGHOUT THE TOWN

&&

PW
Local storm report, Aug 5, 9:40 PM EDT, 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BLACKSBURG VA
940 PM EDT WED AUG 05 2015

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0911 PM     TSTM WND DMG     KING                    36.28N 80.36W
08/05/2015                   STOKES             NC   911 CALL CENTER

            MULTIPLE TREES DOWN THROUGHOUT THE TOWN

&&

PW
Special weather statement, Aug 5, 10:07 PM EDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BLACKSBURG VA
1007 PM EDT WED AUG 5 2015

VAZ014-017-060245-
MONTGOMERY-FLOYD-
1007 PM EDT WED AUG 5 2015

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN FLOYD AND
SOUTHERN MONTGOMERY COUNTIES...

AT 1007 PM EDT...A STRONG THUNDERSTORM WAS OVER CHRISTIANSBURG...
MOVING NORTHEAST AT 35 MPH.

WINDS IN EXCESS OF 30 MPH AND PEA SIZE HAIL ARE POSSIBLE WITH THIS
STORM.

LOCATIONS IMPACTED INCLUDE...
BLACKSBURG...
CHRISTIANSBURG...
PILOT...
SHAWSVILLE...
AND COPPER HILL.

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

LAT...LON 3707 8053 3732 8026 3723 8019 3711 8018
      3711 8017 3712 8013 3707 8011 3705 8012
      3691 8039
TIME...MOT...LOC 0207Z 218DEG 31KT 3711 8043

RAB

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 5, 8:19 PM EDTSpecial Weather StatementRNKBland26 min
Aug 5, 8:38 PM EDTSpecial Weather StatementRNKBland37 min
Aug 5, 9:21 PM EDTSpecial Weather StatementRNKHenry24 min
Aug 5, 9:30 PM EDTSpecial Weather StatementRNKCity of Martinsville30 min
Aug 5, 10:16 PM EDTSpecial Weather StatementRNKPittsylvania, City of Danville59 min
Aug 5, 10:42 PM EDTSpecial Weather StatementRNKHalifax63 min
Aug 5, 11:31 PM EDTSpecial Weather StatementRNKCampbell59 min
Aug 6, 12:00 AM EDTSpecial Weather StatementRNKCharlotte, Halifax60 min
Aug 6, 6:46 PM EDTSpecial Weather StatementRNKFloyd29 min
Aug 6, 7:26 PM EDTSpecial Weather StatementRNKPulaski34 min
Aug 5, 8:54 PM EDTSevere Thunderstorm WarningRNKRockingham, Stokes44 min
Aug 6, 6:15 PM EDTSpecial Weather StatementRNKWilkes30 min
Aug 6, 6:56 PM EDTSpecial Weather StatementRNKSurry34 min
Aug 6, 7:42 PM EDTSpecial Weather StatementRNKRockingham33 min

Nearby

Special Weather Statements in Virginia, 2015Every special weather statement in 2015

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.