Alert archive / Virginia / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 286, NWS Blacksburg, VA

October 31, 20195 counties in Virginia; Greenbrier County, Mercer County, Summers County, West Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Oct 31, 2019, 1:32 PM EDT for 5 counties in Virginia; Greenbrier County, Mercer County, Summers County, West Virginia. It was in force for 73 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: Oct 31, 2019, 1:32 PM EDT (17:32 UTC)
Expired: Oct 31, 2019, 2:45 PM EDT
In force: 73 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Bland County, VA, Giles County, VA, Smyth County, VA, Tazewell County, VA, Wythe County, VA, Greenbrier County, WV, Mercer County, WV, Summers County, WV

The radar

The Roanoke radar (KFCX), 75 km from the middle of the area, began a volume at 17:32 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Oct 31, 12:45 PM EDT	Tornado Watch	SPC	4 hr

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 5.5 hours before the alert went out and 138 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: 50 J/kg
Mixed-layer CIN: -79 J/kg
Mixed-layer LCL: 621 m above ground
0-6 km bulk shear: 47 kt
0-1 km storm-relative helicity: 270 m²/s²
0-3 km storm-relative helicity: 270 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Oct 31, 10:19 AM EDT, 3 hours 13 minutes earlier.

Area forecast discussion, Oct 31, 10:19 AM EDT, 3 hours 13 minutes before

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Hazardous weather outlook, Oct 31, 10:25 AM EDT, 3 hours 7 minutes before

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In the hours before

Special weather statement, Oct 31, 9:14 AM EDT, 4 hours 18 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
914 AM EDT Thu Oct 31 2019

VAZ017-032-033-311345-
Franklin-Patrick-Floyd-
914 AM EDT Thu Oct 31 2019

...A STRONG THUNDERSTORM WILL AFFECT EASTERN FLOYD...CENTRAL PATRICK
AND SOUTHWESTERN FRANKLIN COUNTIES...

At 914 AM EDT, a thunderstorm was located over Meadows Of Dan, or
near Woolwine, moving northeast at 45 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include...
Floyd...
Woolwine...
Ferrum...
Terrys Fork...
Endicott...
Meadows Of Dan...
and Mabry Mill.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 3665 8049 3670 8045 3671 8047 3704 8033
      3708 8028 3698 7995 3660 8039
TIME...MOT...LOC 1314Z 212DEG 40KT 3673 8039

PW

Special weather statement, Oct 31, 10:19 AM EDT, 3 hours 13 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
1019 AM EDT Thu Oct 31 2019

NCZ002-003-VAZ016-032-311445-
Surry-Alleghany-Patrick-Carroll-
1019 AM EDT Thu Oct 31 2019

...A STRONG THUNDERSTORM WILL AFFECT EAST CENTRAL ALLEGHANY AND
NORTHWESTERN SURRY COUNTIES IN NORTHWESTERN NORTH CAROLINA...CARROLL
AND WEST CENTRAL PATRICK COUNTIES IN SOUTHWESTERN VIRGINIA...

At 1019 AM EDT, a strong thunderstorm was located near Roaring Gap,
or near Mountain Park, moving northeast at 65 mph.

Winds in excess of 40 mph are possible with this storm.

Locations impacted include...
Hillsville...
Fancy Gap...
Cana...
Mountain Park...
Bottom...
Dugspur...
and Laurel Fork.

This storm may intensify, so be certain to monitor local radio
stations and available television stations for additional information
and possible warnings from the National Weather Service.

LAT...LON 3642 8101 3656 8093 3656 8084 3662 8089
      3688 8074 3677 8051 3671 8046 3634 8086
TIME...MOT...LOC 1419Z 213DEG 56KT 3645 8093

PW

The office that day

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

Issued	Product	Office	Counties	Lasted
Oct 31, 4:40 AM EDT	Special Weather Statement	RNK	Pittsylvania	35 min
Oct 31, 4:48 AM EDT	High Wind Watch	RNK	Alleghany, Bath, Botetourt, Craig, Roanoke, Rockbridge and 5 more	5 hr
Oct 31, 4:48 AM EDT	Wind Advisory	RNK	Alleghany, Amherst, Bath, Bedford, Bland, Botetourt and 27 more	28 hr
Oct 31, 9:14 AM EDT	Special Weather Statement	RNK	Floyd	31 min
Oct 31, 9:55 AM EDT	High Wind Warning	RNK	Alleghany, Bath, Botetourt, Carroll, Floyd, Grayson and 8 more	19 hr
Oct 31, 10:19 AM EDT	Special Weather Statement	RNK	Carroll	26 min
Oct 31, 2:45 PM EDT	Severe Thunderstorm Warning	RNK	Bland, Giles, Smyth, Tazewell, Wythe	90 min
Oct 31, 3:50 PM EDT	Severe Thunderstorm Warning	RNK	Craig, Giles, Montgomery, Pulaski, City of Radford	40 min
Oct 31, 4:04 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Bath, Botetourt, Craig, City of Covington	86 min
Oct 31, 4:30 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Floyd, Montgomery, Pulaski, Roanoke, City of Radford	60 min
Oct 31, 4:51 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Grayson, City of Galax	47 min
Oct 31, 5:03 PM EDT	Severe Thunderstorm Warning	RNK	Franklin	27 min
Oct 31, 5:25 PM EDT	Severe Thunderstorm Warning	RNK	Amherst, Bedford, City of Lynchburg	65 min
Oct 31, 5:38 PM EDT	Flash Flood Warning	RNK	Carroll, Floyd, Montgomery, Pulaski, City of Galax, City of Radford	112 min
Oct 31, 5:49 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Floyd, Franklin, Patrick	33 min
Oct 31, 6:27 PM EDT	Areal Flood Advisory	RNK	Roanoke, City of Roanoke, City of Salem	68 min
Oct 31, 6:41 PM EDT	Severe Thunderstorm Warning	RNK	Pittsylvania, City of Danville	40 min
Oct 31, 7:06 PM EDT	Severe Thunderstorm Warning	RNK	Appomattox, Buckingham, Campbell, Charlotte, Halifax	54 min
Oct 31, 7:27 PM EDT	Tornado Warning	RNK	Charlotte, Halifax	48 min
Oct 31, 7:29 PM EDT	Tornado Warning	RNK	Charlotte, Halifax	36 min
Oct 31, 3:45 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Ashe, Watauga, Wilkes	75 min
Oct 31, 6:12 PM EDT	Severe Thunderstorm Warning	RNK	Rockingham	45 min
Oct 31, 6:37 PM EDT	Tornado Warning	RNK	Caswell, Rockingham	39 min
Oct 31, 6:52 PM EDT	Tornado Warning	RNK	Caswell	23 min
Oct 31, 7:15 PM EDT	Severe Thunderstorm Warning	RNK	Caswell	30 min
Oct 31, 2:26 PM EDT	Tornado Warning	RNK	Greenbrier	34 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2019 Severe Thunderstorm Warnings in West Virginia, 2019 Every severe thunderstorm warning in 2019

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.