Alert archive / North Carolina / Special Weather Statements in 2020

Special Weather Statement, NWS Blacksburg, VA

August 3, 2020Grayson County, Smyth County, Virginia; 4 counties in North Carolina

NWS Blacksburg, VA issued this special weather statement at Aug 3, 2020, 10:09 AM EDT for Grayson County, Smyth County, Virginia; 4 counties in North Carolina. It was in force for 66 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 3, 2020, 10:09 AM EDT (14:09 UTC)
Expired: Aug 3, 2020, 11:15 AM EDT
In force: 66 min
Issued by: NWS Blacksburg, VA

Counties Alleghany County, NC, Ashe County, NC, Watauga County, NC, Wilkes County, NC, Grayson County, VA, Smyth County, VA

The radar

The Roanoke radar (KFCX), 142 km from the middle of the area, began a volume at 14:12 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, 2.2 hours before the alert went out and 158 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: 478 J/kg
Mixed-layer CIN: -51 J/kg
Mixed-layer LCL: 948 m above ground
0-6 km bulk shear: 30 kt
0-1 km storm-relative helicity: 13 m²/s²
0-3 km storm-relative helicity: 47 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 3, 6:07 AM EDT, 4 hours 2 minutes earlier.

Area forecast discussion, Aug 3, 6:07 AM EDT, 4 hours 2 minutes before

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Hazardous weather outlook, Aug 3, 3:30 AM EDT, 6 hours 39 minutes before

Hazardous Weather Outlook
National Weather Service Blacksburg VA
330 AM EDT Mon Aug 3 2020

NCZ001>003-018-019-VAZ015>017-032-040730-
Ashe-Alleghany NC-Surry-Watauga-Wilkes-Grayson-Carroll-Floyd-Patrick-
330 AM EDT Mon Aug 3 2020

...FLASH FLOOD WATCH IN EFFECT FROM 8 AM EDT THIS MORNING THROUGH
TUESDAY EVENING...

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

.DAY ONE...Today and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

In addition, scattered thunderstorms could become severe and produce
damaging winds.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

In addition, scattered thunderstorms could become severe and produce
damaging winds during Tuesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

NCZ004>006-020-VAZ022>024-033>035-043>047-058-059-040730-
Stokes-Rockingham-Caswell-Yadkin-Roanoke-Botetourt-Rockbridge-
Franklin-Bedford-Amherst-Henry-Pittsylvania-Campbell-Appomattox-
Buckingham-Halifax-Charlotte-
330 AM EDT Mon Aug 3 2020

...FLASH FLOOD WATCH IN EFFECT FROM 2 PM EDT THIS AFTERNOON THROUGH
TUESDAY EVENING...

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

.DAY ONE...Today and tonight.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

In addition, scattered thunderstorms could become severe and produce
damaging winds.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

In addition, scattered thunderstorms could become severe and produce
damaging winds during Tuesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation may be needed.

VAZ007-009>014-018>020-WVZ042>044-507-508-040730-
Tazewell-Smyth-Bland-Giles-Wythe-Pulaski-Montgomery-Craig-
Alleghany VA-Bath-Mercer-Summers-Monroe-Eastern Greenbrier-
Western Greenbrier-
330 AM EDT Mon Aug 3 2020

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

.DAY ONE...Today and tonight.

Scattered thunderstorms may bring locally heavy rainfall that could
lead to flash flooding. In addition, they may become severe and
produce damaging winds.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Scattered thunderstorms on Tuesday may bring locally heavy rainfall
that could lead to flash flooding. In addition, they may become
severe and produce damaging winds.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

PW

In the hours before

Special weather statement, Aug 3, 6:50 AM EDT, 3 hours 19 minutes before

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Special weather statement, Aug 3, 7:09 AM EDT, 3 hours before

Special Weather Statement
National Weather Service BLACKSBURG VA
709 AM EDT Mon Aug 3 2020

NCZ002-019-031230-
Wilkes-Alleghany-
709 AM EDT Mon Aug 3 2020

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT
SOUTH CENTRAL ALLEGHANY AND WILKES COUNTIES IN NORTHWESTERN NORTH
CAROLINA...

At 709 AM EDT, strong thunderstorms were clustered near Cedar Rock,
or 7 miles northeast of Lenoir, moving north at 20 mph.

Winds in excess of 30 mph are possible with this storm.

Locations impacted include...
North Wilkesboro...
Wilkesboro...
Ronda...
Traphill...
Boomer...
Mc Grady...
and Wilbar.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

Frequent cloud to ground lightning is occurring with this storm.
Lightning can strike 10 miles away from a thunderstorm. Seek a safe
shelter inside a building or vehicle.

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 3602 8135 3604 8140 3605 8139 3607 8141
      3608 8143 3607 8144 3609 8146 3609 8147
      3610 8148 3610 8151 3611 8153 3646 8113
      3633 8087 3623 8087 3603 8117 3604 8120
      3603 8127 3600 8132
TIME...MOT...LOC 1109Z 190DEG 17KT 3601 8148

RAB

Special weather statement, Aug 3, 9:11 AM EDT, 58 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
911 AM EDT Mon Aug 3 2020

VAZ007-031345-
Tazewell-
911 AM EDT Mon Aug 3 2020

...A STRONG THUNDERSTORM WILL AFFECT
TAZEWELL COUNTY...

At 910 AM EDT, a strong thunderstorm was located over Cedar Bluff,
moving northeast at 25 mph.

Winds in excess of 40 mph and pea size hail are possible with this
storm.

Locations impacted include...
Richlands...
Tazewell...
Cedar Bluff...
Amonate...
Gratton...
Cliffield...
and Tiptop.

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

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 3717 8187 3720 8176 3724 8174 3720 8168
      3721 8156 3724 8151 3726 8150 3725 8148
      3727 8145 3727 8142 3730 8140 3717 8127
      3716 8132 3714 8133 3713 8131 3698 8179
      3705 8182 3714 8190
TIME...MOT...LOC 1310Z 245DEG 21KT 3712 8175

VFJ

Special weather statement, Aug 3, 9:19 AM EDT, 50 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
919 AM EDT Mon Aug 3 2020

NCZ001-VAZ009-015-031400-
Ashe-Grayson-Smyth-
919 AM EDT Mon Aug 3 2020

...A STRONG THUNDERSTORM WILL AFFECT
NORTHWESTERN ASHE...CENTRAL SMYTH AND WESTERN GRAYSON COUNTIES...

At 918 AM EDT, a strong thunderstorm was located near Whitetop,
moving northeast at 20 mph.

Winds in excess of 40 mph and half inch hail are possible with this
storm.

Locations impacted include...
Marion...
Chilhowie...
Whitetop...
Mouth Of Wilson...
Mount Rogers National Recreation Area...
Sugar Grove...
and Troutdale.

If outdoors, consider seeking shelter inside a building.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

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 3695 8148 3663 8119 3644 8169 3646 8171
      3647 8170 3651 8170 3653 8171 3656 8169
      3657 8169 3657 8168 3659 8168 3661 8165
      3662 8162 3664 8161 3664 8162 3679 8170
      3683 8173
TIME...MOT...LOC 1318Z 240DEG 18KT 3664 8173

VFJ

Special weather statement, Aug 3, 9:56 AM EDT, 13 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
956 AM EDT Mon Aug 3 2020

VAZ007-009-010-012-WVZ042-031445-
Tazewell-Bland-Wythe-Smyth-Mercer-
956 AM EDT Mon Aug 3 2020

...A STRONG THUNDERSTORM WILL AFFECT
NORTHERN SMYTH...SOUTHEASTERN TAZEWELL...BLAND...WESTERN WYTHE AND
SOUTHWESTERN MERCER COUNTIES...

At 955 AM EDT, a strong thunderstorm was located over Atkins, or near
Marion, moving northeast at 35 mph.

Winds in excess of 40 mph and pea size hail are possible with this
storm.

Locations impacted include...
Bluefield...
Wytheville...
Bland...
Marion...
Rural Retreat...
Ceres...
and Mount Rogers National Recreation Area.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

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 3732 8128 3712 8090 3711 8093 3706 8091
      3675 8129 3674 8138 3690 8171
TIME...MOT...LOC 1355Z 219DEG 29KT 3687 8146

VFJ

Special weather statement, Aug 3, 10:09 AM EDT, 0 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
1009 AM EDT Mon Aug 3 2020

NCZ001>003-018-019-VAZ009-015-016-031515-
Surry-Ashe-Wilkes-Watauga-Alleghany-Grayson-Smyth-Carroll-
1009 AM EDT Mon Aug 3 2020

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT
ALLEGHANY...NORTHWESTERN SURRY...WILKES...WATAUGA AND ASHE COUNTIES
IN NORTHWESTERN NORTH CAROLINA...SOUTHERN SMYTH AND GRAYSON COUNTIES
IN SOUTHWESTERN VIRGINIA...

At 1007 AM EDT, strong thunderstorms were clustered over Maple
Springs, or near Deep Gap, moving northeast at 30 mph.

Winds in excess of 30 mph are possible with this storm.

Locations impacted include...
Boone...
Galax...
Marion...
North Wilkesboro...
Wilkesboro...
Chilhowie...
and Sparta.

Torrential rainfall is also occurring with this storm, and may cause
localized flooding. Do not drive your vehicle through flooded
roadways.

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 3607 8141 3612 8155 3611 8181 3616 8183
      3621 8191 3626 8189 3629 8192 3634 8185
      3636 8180 3634 8171 3641 8174 3647 8170
      3653 8171 3659 8168 3663 8160 3682 8173
      3690 8168 3660 8079 3604 8113 3600 8132
TIME...MOT...LOC 1407Z 207DEG 26KT 3620 8143

VFJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 2, 11:52 PM EDT	Special Weather Statement	RNK	Charlotte, Halifax, Pittsylvania, City of Danville	53 min
Aug 3, 12:12 AM EDT	Special Weather Statement	RNK	City of Danville	63 min
Aug 3, 12:35 AM EDT	Severe Thunderstorm Warning	RNK	Halifax, Pittsylvania, City of Danville	55 min
Aug 3, 12:53 AM EDT	Flash Flood Warning	RNK	Pittsylvania	3 hr
Aug 3, 1:05 AM EDT	Areal Flood Advisory	RNK	Halifax	3 hr
Aug 3, 3:32 AM EDT	Severe Thunderstorm Warning	RNK	Carroll, Patrick	43 min
Aug 3, 4:23 AM EDT	Special Weather Statement	RNK	Bedford	37 min
Aug 3, 4:34 AM EDT	Areal Flood Advisory	RNK	Carroll, Floyd, Patrick, City of Galax	4 hr
Aug 3, 6:17 AM EDT	Special Weather Statement	RNK	City of Covington	43 min
Aug 3, 9:11 AM EDT	Special Weather Statement	RNK	Tazewell	34 min
Aug 3, 9:19 AM EDT	Special Weather Statement	RNK	Grayson, Smyth	41 min
Aug 3, 9:41 AM EDT	Areal Flood Advisory	RNK	Smyth	3 hr
Aug 3, 9:56 AM EDT	Special Weather Statement	RNK	Bland, Smyth	49 min
Aug 3, 10:55 AM EDT	Special Weather Statement	RNK	Bland, Giles	50 min
Aug 3, 12:31 PM EDT	Special Weather Statement	RNK	Bath	44 min
Aug 3, 12:33 PM EDT	Areal Flood Advisory	RNK	Montgomery, Roanoke, City of Radford, City of Roanoke, City of Salem	3 hr
Aug 3, 12:41 PM EDT	Special Weather Statement	RNK	Botetourt, Craig, Montgomery, Roanoke, City of Roanoke, City of Salem	64 min
Aug 3, 1:04 PM EDT	Special Weather Statement	RNK	Campbell, Floyd, Franklin, Henry, Patrick, Pittsylvania and 2 more	41 min
Aug 3, 1:18 PM EDT	Severe Thunderstorm Warning	RNK	Bedford, Floyd, Franklin, Henry, Patrick, Pittsylvania and 1 more	57 min
Aug 3, 1:34 PM EDT	Special Weather Statement	RNK	Appomattox, Charlotte	41 min
Aug 3, 2:14 PM EDT	Special Weather Statement	RNK	Bedford, Campbell, Franklin, City of Lynchburg, City of Roanoke, City of Salem	46 min
Aug 3, 2:19 PM EDT	Special Weather Statement	RNK	Buckingham	41 min
Aug 3, 2:28 PM EDT	Areal Flood Advisory	RNK	Campbell, Charlotte, Halifax	94 min
Aug 3, 2:31 PM EDT	Severe Thunderstorm Warning	RNK	Bedford, Botetourt, Franklin	44 min
Aug 3, 2:49 PM EDT	Areal Flood Advisory	RNK	City of Lynchburg	3 hr
Aug 3, 3:09 PM EDT	Special Weather Statement	RNK	Amherst, City of Lynchburg	36 min
Aug 3, 3:32 PM EDT	Areal Flood Advisory	RNK	Amherst, Rockbridge, City of Buena Vista	3 hr
Aug 3, 1:30 AM EDT	Special Weather Statement	RNK	Rockingham	60 min
Aug 3, 2:25 AM EDT	Special Weather Statement	RNK	Surry, Yadkin	65 min
Aug 3, 3:10 AM EDT	Areal Flood Advisory	RNK	Yadkin	3 hr
Aug 3, 6:50 AM EDT	Special Weather Statement	RNK	Watauga	40 min
Aug 3, 7:09 AM EDT	Special Weather Statement	RNK	Wilkes	81 min
Aug 3, 10:05 AM EDT	Areal Flood Advisory	RNK	Ashe, Watauga, Wilkes	5 hr

Nearby

Special Weather Statements in North Carolina, 2020 Special Weather Statements in Virginia, 2020 Every special weather statement in 2020

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.