Alert archive / Virginia / Severe Thunderstorm Warnings in 2019

Severe Thunderstorm Warning 225, NWS Blacksburg, VA

August 19, 2019Charlotte County, Halifax County, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Aug 19, 2019, 5:50 PM EDT for Charlotte County, Halifax County, Virginia. It was in force for 39 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 19, 2019, 5:50 PM EDT (21:50 UTC)
Expired: Aug 19, 2019, 6:29 PM EDT
In force: 39 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Charlotte County, VA, Halifax County, VA

The radar

The Roanoke radar (KFCX), 132 km from the middle of the area, began a volume at 21:52 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, 9.8 hours before the alert went out and 133 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: 721 J/kg
Mixed-layer CIN: -106 J/kg
Mixed-layer LCL: 1337 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: 6 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 19, 3:51 PM EDT, 1 hour 59 minutes earlier.

Area forecast discussion, Aug 19, 3:51 PM EDT, 1 hour 59 minutes before

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Hazardous weather outlook, Aug 19, 3:21 PM EDT, 2 hours 29 minutes before

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In the hours before

Special weather statement, Aug 19, 1:43 PM EDT, 4 hours 7 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
143 PM EDT Mon Aug 19 2019

NCZ019-191845-
Wilkes-
143 PM EDT Mon Aug 19 2019

...A STRONG THUNDERSTORM WILL AFFECT WILKES COUNTY THROUGH 245 pm
edt...

At 143 PM EDT, a strong thunderstorm was located over Dockery, moving
south at 10 mph.

Winds in excess of 30 mph and pea size hail are possible with this
storm.

Locations impacted include...
North Wilkesboro...
Wilkesboro...
Boomer...
Mulberry...
and Wilkesboro Reservoir.

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 3604 8138 3638 8116 3631 8095 3604 8103
      3603 8107 3603 8110 3604 8111 3604 8114
      3603 8116 3604 8119 3603 8124 3603 8127
      3600 8132
TIME...MOT...LOC 1743Z 022DEG 7KT 3628 8109

RAB

Special weather statement, Aug 19, 1:46 PM EDT, 4 hours 4 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
146 PM EDT Mon Aug 19 2019

NCZ018-019-191845-
Wilkes-Watauga-
146 PM EDT Mon Aug 19 2019

...A STRONG THUNDERSTORM WILL AFFECT SOUTHWEST WILKES AND SOUTHEAST
WATAUGA COUNTIES THROUGH 245 PM EDT...

At 145 PM EDT, a strong thunderstorm was located near Darby. the
storm is nearly stationary.

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

Locations impacted include...
Boone...
Blowing Rock...
Deep Gap...
Foscoe...
and Blowing Rock In Caldwell County.

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 3604 8140 3605 8139 3607 8141 3607 8144
      3609 8146 3609 8147 3610 8148 3610 8151
      3612 8155 3612 8171 3611 8181 3614 8182
      3626 8151 3624 8148 3626 8146 3627 8143
      3617 8127 3603 8136
TIME...MOT...LOC 1745Z 325DEG 1KT 3617 8148

RAB

Special weather statement, Aug 19, 2:15 PM EDT, 3 hours 35 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
215 PM EDT Mon Aug 19 2019

VAZ012-013-016-017-032-191915-
Pulaski-Patrick-Wythe-Floyd-Carroll-
215 PM EDT Mon Aug 19 2019

...A STRONG THUNDERSTORM WILL AFFECT SOUTHERN PULASKI, NORTHERN
CARROLL, EXTREME WESTERN FLOYD, AND EXTREME SOUTHERNEASTERN WYTHE
THROUGH 315 PM EDT.

At 214 PM EDT, a strong thunderstorm was located near Dugspur, moving
south at 15 mph.

Winds in excess of 30 mph and half inch hail are possible with this
storm.

Locations impacted include...
Hillsville...
Fancy Gap...
Patterson...
Ararat...
and Cana.

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 3656 8068 3656 8084 3661 8088 3698 8081
      3690 8053 3655 8049
TIME...MOT...LOC 1814Z 007DEG 11KT 3685 8067

RAB

Special weather statement, Aug 19, 3:12 PM EDT, 2 hours 38 minutes before

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Special weather statement, Aug 19, 3:50 PM EDT, 2 hours before

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Special weather statement, Aug 19, 5:26 PM EDT, 24 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
Aug 19, 1:23 PM EDT	Severe Thunderstorm Warning	RNK	Patrick	32 min
Aug 19, 1:34 PM EDT	Special Weather Statement	RNK	City of Roanoke, City of Salem	56 min
Aug 19, 2:15 PM EDT	Special Weather Statement	RNK	Carroll	60 min
Aug 19, 3:12 PM EDT	Special Weather Statement	RNK	Pulaski	33 min
Aug 19, 3:18 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Wythe	23 min
Aug 19, 3:50 PM EDT	Special Weather Statement	RNK	Botetourt	25 min
Aug 19, 5:26 PM EDT	Special Weather Statement	RNK	Halifax	34 min
Aug 19, 1:21 PM EDT	Special Weather Statement	RNK	Stokes	54 min
Aug 19, 1:43 PM EDT	Special Weather Statement	RNK	Wilkes	62 min
Aug 19, 1:46 PM EDT	Special Weather Statement	RNK	Watauga	59 min
Aug 19, 3:27 PM EDT	Severe Thunderstorm Warning	RNK	Ashe	24 min

Nearby

Severe Thunderstorm Warnings in 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.