Alert archive / Virginia / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 144, NWS Blacksburg, VA

July 25, 2023Henry County, Pittsylvania County, City of Martinsville, Virginia

NWS Blacksburg, VA issued this severe thunderstorm warning at Jul 25, 2023, 1:57 PM EDT for Henry County, Pittsylvania County, City of Martinsville, Virginia. It was in force for 33 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: Jul 25, 2023, 1:57 PM EDT (17:57 UTC)
Expired: Jul 25, 2023, 2:30 PM EDT
In force: 33 min
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties City of Martinsville, VA, Henry County, VA, Pittsylvania County, VA

The radar

The Roanoke radar (KFCX), 57 km from the middle of the area, began a volume at 18:00 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

Washington/Dulle, VA (KIAD), launched 12:00Z, 6.0 hours before the alert went out and 321 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: 591 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 1068 m above ground
0-6 km bulk shear: 37 kt
0-1 km storm-relative helicity: 17 m²/s²
0-3 km storm-relative helicity: 52 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

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 Jul 25, 1:13 PM EDT, 44 minutes earlier.

Area forecast discussion, Jul 25, 1:13 PM EDT, 44 minutes before

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Hazardous weather outlook, Jul 25, 10:17 AM EDT, 3 hours 40 minutes before

Hazardous Weather Outlook
National Weather Service Blacksburg VA
1017 AM EDT Tue Jul 25 2023

NCZ001>003-018>020-VAZ007-009>020-032-WVZ042>044-507-508-261430-
Ashe-Alleghany NC-Surry-Watauga-Wilkes-Yadkin-Tazewell-Smyth-Bland-
Giles-Wythe-Pulaski-Montgomery-Grayson-Carroll-Floyd-Craig-
Alleghany VA-Bath-Patrick-Mercer-Summers-Monroe-Eastern Greenbrier-
Western Greenbrier-
1017 AM EDT Tue Jul 25 2023

This Hazardous Weather Outlook is for north central North Carolina,
northwest North Carolina, 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...Wednesday through Monday.

The probability for widespread hazardous weather is low.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NCZ004>006-VAZ022>024-033>035-043>047-058-059-261430-
Stokes-Rockingham-Caswell-Roanoke-Botetourt-Rockbridge-Franklin-
Bedford-Amherst-Henry-Pittsylvania-Campbell-Appomattox-Buckingham-
Halifax-Charlotte-
1017 AM EDT Tue Jul 25 2023

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

.DAY ONE...Today and tonight.

There is a low probability for widespread hazardous weather.

.DAYS TWO THROUGH SEVEN...Wednesday through Monday.

Heat index values of 100 to 105 are possible Thursday through
Saturday, with Friday looking like the hottest day.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Jul 25, 1:44 PM EDT, 13 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
144 PM EDT Tue Jul 25 2023

VAZ043-251815-
Henry VA-
144 PM EDT Tue Jul 25 2023

...A strong thunderstorm will impact portions of
central Henry County and the City of Martinsville through 215 PM
EDT...

At 144 PM EDT, Doppler radar was tracking a strong thunderstorm over
Stanleytown, or over Bassett, moving east at 15 mph.

HAZARD...Winds in excess of 40 mph.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects.

Locations impacted include...
Martinsville...
Bassett...
Stanleytown...
Villa Heights...
Collinsville...
Figsboro...
and Oak Level.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

Locally heavy rain will quickly reduce visibility and result in
ponding of water on roadways, standing water in low lying areas, and
minor flooding of creeks, streams, and areas of poor drainage.
Drivers are urged to slow down and use extra caution to avoid
hydroplaning.

&&

LAT...LON 3675 8000 3679 7998 3678 7976 3664 7984
TIME...MOT...LOC 1744Z 288DEG 13KT 3675 7994

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...40 MPH

DS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 25, 1:44 PM EDT	Special Weather Statement	RNK	City of Martinsville	31 min
Jul 25, 2:08 PM EDT	Special Weather Statement	RNK	Bedford	37 min
Jul 25, 2:45 PM EDT	Special Weather Statement	RNK	Henry, City of Martinsville	45 min
Jul 25, 2:46 PM EDT	Special Weather Statement	RNK	Bedford	44 min
Jul 25, 3:26 PM EDT	Special Weather Statement	RNK	City of Danville	34 min
Jul 25, 3:30 PM EDT	Special Weather Statement	RNK	Bedford	45 min
Jul 25, 2:05 PM EDT	Special Weather Statement	RNK	Surry	25 min
Jul 25, 2:40 PM EDT	Special Weather Statement	RNK	Surry	35 min
Jul 25, 3:17 PM EDT	Special Weather Statement	RNK	Surry, Yadkin	43 min
Jul 25, 4:08 PM EDT	Special Weather Statement	RNK	Caswell	37 min
Jul 25, 4:10 PM EDT	Special Weather Statement	RNK	Forsyth	35 min
Jul 25, 4:12 PM EDT	Special Weather Statement	RNK	Yadkin	33 min
Jul 25, 4:47 PM EDT	Special Weather Statement	RNK	Caswell	28 min
Jul 25, 5:03 PM EDT	Special Weather Statement	RNK	Wilkes	27 min
Jul 25, 5:04 PM EDT	Special Weather Statement	RNK	Surry	26 min
Jul 25, 5:12 PM EDT	Special Weather Statement	RNK	Watauga	33 min
Jul 25, 5:17 PM EDT	Special Weather Statement	RNK	Caswell	43 min
Jul 25, 5:57 PM EDT	Special Weather Statement	RNK	Yadkin	18 min
Jul 25, 2:48 AM EDT	Special Weather Statement	RNK	Greenbrier	27 min

Nearby

Severe Thunderstorm Warnings in Virginia, 2023 Every severe thunderstorm warning in 2023

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.