Alert archive / Virginia / Severe Thunderstorm Warnings in 2018

Severe Thunderstorm Warning 144, NWS Blacksburg, VA

August 5, 2018Alleghany County, Bath County, Rockbridge County, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Aug 5, 2018, 4:42 PM EDT for Alleghany County, Bath County, Rockbridge County, Virginia. It was in force for 63 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: Aug 5, 2018, 4:42 PM EDT (20:42 UTC)
Expired: Aug 5, 2018, 5:45 PM EDT
In force: 63 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Alleghany County, VA, Bath County, VA, Rockbridge County, VA

The radar

The Roanoke radar (KFCX), 107 km from the middle of the area, began a volume at 20:44 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, 8.7 hours before the alert went out and 79 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: 461 J/kg
Mixed-layer CIN: -91 J/kg
Mixed-layer LCL: 1154 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: -4 m²/s²
0-3 km storm-relative helicity: 22 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 Aug 5, 3:05 PM EDT, 1 hour 37 minutes earlier.

Area forecast discussion, Aug 5, 3:05 PM EDT, 1 hour 37 minutes before

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Hazardous weather outlook, Aug 5, 5:14 AM EDT, 11 hours 28 minutes before

Hazardous Weather Outlook
National Weather Service Blacksburg VA
514 AM EDT Sun Aug 5 2018

NCZ001>006-018>020-VAZ007-009>020-022>024-032>035-043>047-058-059-
WVZ042>044-507-508-060915-
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-
514 AM EDT Sun Aug 5 2018

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...Today and tonight.

The probability for widespread hazardous weather is low.

.DAYS TWO THROUGH SEVEN...Monday through Saturday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Aug 5, 2:20 PM EDT, 2 hours 22 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
220 PM EDT SUN AUG 5 2018

VAZ019-020-WVZ507-051900-
Bath-Alleghany-Eastern Greenbrier-
220 PM EDT SUN AUG 5 2018

...A STRONG THUNDERSTORM WILL AFFECT
NORTH CENTRAL ALLEGHANY...SOUTHWESTERN BATH COUNTIES IN WEST CENTRAL
VIRGINIA AND EAST CENTRAL GREENBRIER COUNTIES IN SOUTHEASTERN WEST
VIRGINIA...

Until 300 PM EDT.

At 219 PM EDT, a strong thunderstorm was located 7 miles northeast
of Neola, moving southeast at 15 mph.

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

Locations impacted include...
Neola...
Hot Springs...
Lake Moomaw...
Ingalls Field...
and Carloover.

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 3792 7976 3780 8005 3804 8018 3804 8016
      3806 8011 3806 7996 3808 7995 3810 7993
TIME...MOT...LOC 1819Z 327DEG 13KT 3806 8006

Loconto

Special weather statement, Aug 5, 2:53 PM EDT, 1 hour 49 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
253 PM EDT SUN AUG 5 2018

NCZ019-051930-
Wilkes-
253 PM EDT SUN AUG 5 2018

...A STRONG THUNDERSTORM WILL AFFECT NORTHEASTERN WILKES COUNTY...

Until 330 PM EDT.

At 253 PM EDT, a strong thunderstorm was located near Benham, moving
south at 10 mph.

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

Locations impacted include...
Ronda...
Traphill...
Clingman...
Pleasant Hill...
and Benham.

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 3635 8105 3636 8090 3634 8090 3634 8089
      3624 8087 3618 8088 3615 8107
TIME...MOT...LOC 1853Z 349DEG 7KT 3628 8099

Loconto

Special weather statement, Aug 5, 3:06 PM EDT, 1 hour 36 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
306 PM EDT SUN AUG 5 2018

VAZ020-051945-
Bath-
306 PM EDT SUN AUG 5 2018

...AN AREA OF STRONG THUNDERSTORMS WILL AFFECT
CENTRAL BATH COUNTY...

Until 345 PM EDT.

At 305 PM EDT, strong thunderstorms were clustered over Lake Moomaw,
moving southeast at 10 mph.

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

Locations impacted include...
Warm Springs...
Hot Springs...
Lake Moomaw...
Mountain Grove...
and Douthat State Park.

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.

If you are on or near Lake Moomaw, get out of the water and move
indoors or inside a vehicle. Remember, lightning can strike out to
10 miles from the parent thunderstorm. If you can hear thunder, you
are close enough to be struck by lightning. Move to safe shelter
now! Do not be caught on the water in a thunderstorm.

LAT...LON 3801 7961 3787 7972 3788 7975 3788 7977
      3800 8000 3804 7997 3805 7997 3808 7995
      3810 7993 3811 7994 3813 7994 3814 7993
      3816 7992
TIME...MOT...LOC 1905Z 305DEG 11KT 3805 7991

Loconto

Special weather statement, Aug 5, 3:34 PM EDT, 1 hour 8 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
334 PM EDT SUN AUG 5 2018

VAZ023-024-052015-
Botetourt-Rockbridge-
334 PM EDT SUN AUG 5 2018

...A STRONG THUNDERSTORM WILL AFFECT
SOUTHWESTERN ROCKBRIDGE AND NORTHEASTERN BOTETOURT COUNTIES...

Until 415 PM EDT.

At 334 PM EDT, a strong thunderstorm was located near Gala, moving
southeast at 10 mph.

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

Locations impacted include...
Gala...
Glen Wilton...
and Arcadia.

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 3770 7987 3779 7979 3771 7951 3753 7965
TIME...MOT...LOC 1934Z 299DEG 10KT 3771 7976

Loconto

Special weather statement, Aug 5, 3:42 PM EDT, 1 hour before

Special Weather Statement
National Weather Service BLACKSBURG VA
342 PM EDT SUN AUG 5 2018

VAZ019-020-024-052015-
Bath-Rockbridge-Alleghany-
342 PM EDT SUN AUG 5 2018

...A STRONG THUNDERSTORM WILL AFFECT
EAST CENTRAL ALLEGHANY...WEST CENTRAL ROCKBRIDGE AND SOUTH CENTRAL
BATH COUNTIES IN WEST CENTRAL VIRGINIA...

Until 415 PM EDT.

At 342 PM EDT, a strong thunderstorm was located near Nimrod Hall,
moving southeast at 5 mph.

Wind gusts of 50 to 55 mph and half inch hail are possible with this
storm.

Locations impacted include...
Nimrod Hall...
and Longdale Furnace.

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 3799 7979 3802 7967 3785 7950 3778 7971
TIME...MOT...LOC 1942Z 330DEG 6KT 3794 7969

Loconto

Special weather statement, Aug 5, 4:20 PM EDT, 22 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
420 PM EDT SUN AUG 5 2018

VAZ024-052100-
Rockbridge-
420 PM EDT SUN AUG 5 2018

...A STRONG THUNDERSTORM WILL AFFECT
CENTRAL ROCKBRIDGE COUNTY...THE CITY OF BUENA VISTA AND THE CITY OF
LEXINGTON...

Until 500 PM EDT.

At 420 PM EDT, a strong thunderstorm was located 7 miles southeast of
Millboro, moving southeast at 10 mph.

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

Locations impacted include...
Lexington...
Buena Vista...
Rockbridge Baths...
Cornwall...
and Fairfield.

This includes The following Location VMI.

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 3785 7922 3764 7940 3783 7963 3786 7961
      3787 7964 3787 7965 3788 7965 3791 7963
      3798 7956
TIME...MOT...LOC 2020Z 298DEG 9KT 3787 7955

Loconto

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 5, 1:23 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany	37 min
Aug 5, 1:33 PM EDT	Special Weather Statement	RNK	City of Salem	42 min
Aug 5, 2:20 PM EDT	Special Weather Statement	RNK	Alleghany	40 min
Aug 5, 3:06 PM EDT	Special Weather Statement	RNK	Bath	39 min
Aug 5, 3:34 PM EDT	Special Weather Statement	RNK	Botetourt	41 min
Aug 5, 3:42 PM EDT	Special Weather Statement	RNK	Rockbridge	33 min
Aug 5, 4:20 PM EDT	Special Weather Statement	RNK	Rockbridge, City of Buena Vista, City of Lexington	40 min
Aug 5, 4:32 PM EDT	Severe Thunderstorm Warning	RNK	Rockbridge, City of Buena Vista, City of Lexington	43 min
Aug 5, 2:53 PM EDT	Special Weather Statement	RNK	Wilkes	37 min
Aug 5, 1:10 PM EDT	Special Weather Statement	RNK	Greenbrier	35 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2018 Every severe thunderstorm warning 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.