Alert archive / Virginia / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 51, NWS Blacksburg, VA

June 18, 2015Carroll County, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Jun 18, 2015, 10:28 PM EDT for Carroll County, Virginia. It was in force for 37 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 18, 2015, 10:28 PM EDT (02:28 UTC)
Expired: Jun 18, 2015, 11:05 PM EDT
In force: 37 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Carroll County, VA

The radar

The Roanoke radar (KFCX), 52 km from the middle of the area, began a volume at 02:27 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, 2.5 hours before the alert went out and 104 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: 447 J/kg
Mixed-layer CIN: -47 J/kg
Mixed-layer LCL: 1993 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: 39 m²/s²
0-3 km storm-relative helicity: 71 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.2

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jun 18, 7:55 PM EDT, 2 hours 33 minutes earlier.

Area forecast discussion, Jun 18, 7:55 PM EDT, 2 hours 33 minutes before

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Hazardous weather outlook, Jun 18, 2:53 PM EDT, 7 hours 35 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BLACKSBURG VA
253 PM EDT THU JUN 18 2015

NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-059-
WVZ042>044-507-508-191900-
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-
253 PM EDT THU JUN 18 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.

SCATTERED THUNDERSTORMS ARE EXPECTED TO DEVELOP THIS AFTERNOON AND
EVENING...A FEW OF WHICH MAY BECOME SEVERE. THE MAIN THREAT WOULD
BE DAMAGING WINDS AND HAIL.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

THE REMNANTS OF TROPICAL DEPRESSION BILL WILL PROGRESS THROUGH
THE AREA SATURDAY INTO SATURDAY NIGHT. ANTICIPATE INCREASING
GUSTY WINDS AND VERY HEAVY RAIN. AS SOIL MOISTURE INCREASES AROUND
THE ROOT SYSTEM OF TREES...THEY WILL BECOME EASIER TO BE BLOWN
DOWN BY WINDS GUSTING IN THE 35 TO 45 MPH RANGE...ESPECIALLY IN
THE MOUNTAINS. ALSO...THERE WILL BE STRONG SHEAR ASSOCIATED WITH
ANY STORMS THAT DEVELOP...THUS INCREASING THE POTENTIAL FOR WIND
DAMAGE FROM STORMS AS WELL.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION IS NOT EXPECTED AT THIS TIME.

In the hours before

Local storm report, Jun 18, 8:44 PM EDT, 1 hour 44 minutes before

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Local storm report, Jun 18, 8:46 PM EDT, 1 hour 42 minutes before

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Local storm report, Jun 18, 8:48 PM EDT, 1 hour 40 minutes before

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Local storm report, Jun 18, 9:14 PM EDT, 1 hour 14 minutes before

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Special weather statement, Jun 18, 9:42 PM EDT, 46 minutes before

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Local storm report, Jun 18, 10:00 PM EDT, 28 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
Jun 18, 8:36 PM EDT	Special Weather Statement	RNK	Smyth, Wythe	54 min
Jun 18, 9:42 PM EDT	Special Weather Statement	RNK	Carroll, Grayson, City of Galax	63 min
Jun 18, 11:52 PM EDT	Special Weather Statement	RNK	Henry, City of Martinsville	53 min
Jun 19, 12:31 AM EDT	Special Weather Statement	RNK	Grayson, Smyth	59 min
Jun 19, 1:27 AM EDT	Special Weather Statement	RNK	Pulaski, Wythe	63 min
Jun 19, 3:18 PM EDT	Special Weather Statement	RNK	Smyth	57 min
Jun 19, 3:26 PM EDT	Flash Flood Watch	RNK	Alleghany, Bath, Bland, Botetourt, Craig, Giles and 13 more	29 hr
Jun 19, 3:54 PM EDT	Special Weather Statement	RNK	Pulaski, City of Radford	66 min
Jun 19, 4:01 PM EDT	Special Weather Statement	RNK	Carroll, Patrick	59 min
Jun 19, 5:02 PM EDT	Special Weather Statement	RNK	Franklin	58 min
Jun 19, 5:09 PM EDT	Special Weather Statement	RNK	Floyd	66 min
Jun 19, 5:29 PM EDT	Severe Thunderstorm Warning	RNK	Franklin, Patrick, Pittsylvania	61 min
Jun 19, 5:44 PM EDT	Flash Flood Warning	RNK	Franklin, Henry	4 hr
Jun 19, 6:04 PM EDT	Severe Thunderstorm Warning	RNK	Halifax, Pittsylvania	56 min
Jun 19, 6:26 PM EDT	Special Weather Statement	RNK	Pittsylvania	64 min
Jun 19, 7:16 PM EDT	Special Weather Statement	RNK	Halifax	59 min
Jun 19, 1:16 PM EDT	Special Weather Statement	RNK	Wilkes	59 min
Jun 19, 2:18 PM EDT	Special Weather Statement	RNK	Surry, Wilkes	57 min
Jun 19, 2:54 PM EDT	Special Weather Statement	RNK	Yadkin	66 min
Jun 19, 3:12 PM EDT	Special Weather Statement	RNK	Alleghany	63 min
Jun 19, 3:29 PM EDT	Special Weather Statement	RNK	Stokes, Surry	61 min
Jun 19, 4:20 PM EDT	Special Weather Statement	RNK	Stokes	55 min
Jun 19, 7:28 PM EDT	Special Weather Statement	RNK	Caswell	62 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2015 Every severe thunderstorm warning 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.