Alert archive / North Carolina / Flash Flood Warnings in 2024

Flash Flood Warning 42, NWS Blacksburg, VA

August 30, 2024Alleghany County, Ashe County, Wilkes County, North Carolina

NWS Blacksburg, VA issued this flash flood warning at Aug 30, 2024, 7:46 PM EDT for Alleghany County, Ashe County, Wilkes County, North Carolina. It was in force for 2 hr. 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 30, 2024, 7:46 PM EDT (23:46 UTC)
Expired: Aug 30, 2024, 9:55 PM EDT
In force: 2 hr
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Flood severity: None

Counties Alleghany County, NC, Ashe County, NC, Wilkes County, NC

The radar

The Roanoke radar (KFCX), 114 km from the middle of the area, began a volume at 23:47 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, 11.8 hours before the alert went out and 127 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: 1173 J/kg
Mixed-layer CIN: -98 J/kg
Mixed-layer LCL: 886 m above ground
0-6 km bulk shear: 9 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 97 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 flash flood 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 flash flood warning went out at Aug 30, 7:34 PM EDT, 12 minutes earlier.

Area forecast discussion, Aug 30, 7:34 PM EDT, 12 minutes before

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Hazardous weather outlook, Aug 30, 2:48 PM EDT, 4 hours 58 minutes before

Hazardous Weather Outlook
National Weather Service Blacksburg VA
248 PM EDT Fri Aug 30 2024

VAZ007-011-014-018>020-022>024-034-035-045>047-WVZ042>044-507-508-
311900-
Tazewell-Giles-Montgomery-Craig-Alleghany VA-Bath-Roanoke-Botetourt-
Rockbridge-Bedford-Amherst-Campbell-Appomattox-Buckingham-Mercer-
Summers-Monroe-Eastern Greenbrier-Western Greenbrier-
248 PM EDT Fri Aug 30 2024

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

.DAY ONE...This afternoon and tonight.

There is a marginal risk of severe thunderstorms this afternoon and
evening. The main threat is damaging winds and heavy rain which could
lead to flooding.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

There is a marginal risk of severe storms Saturday afternoon and
evening, and again Sunday afternoon and evening. Damaging winds and
heavy rain are the main threats.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NCZ001>006-018>020-VAZ009-010-012-013-015>017-032-033-043-044-058-
059-311900-
Ashe-Alleghany NC-Surry-Stokes-Rockingham-Caswell-Watauga-Wilkes-
Yadkin-Smyth-Bland-Wythe-Pulaski-Grayson-Carroll-Floyd-Patrick-
Franklin-Henry-Pittsylvania-Halifax-Charlotte-
248 PM EDT Fri Aug 30 2024

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

.DAY ONE...This afternoon and tonight.

There is a marginal risk of severe thunderstorms this afternoon and
evening. Damaging winds will be the main threat.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday.

There is a marginal risk of severe storms Saturday afternoon and
evening, and again Sunday afternoon and evening. Damaging wind and
heavy rain are the main threats.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Local storm report, Aug 30, 6:59 PM EDT, 47 minutes before

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Local storm report, Aug 30, 7:03 PM EDT, 43 minutes before

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Local storm report, Aug 30, 7:08 PM EDT, 38 minutes before

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Special weather statement, Aug 30, 7:31 PM EDT, 15 minutes before

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Local storm report, Aug 30, 7:39 PM EDT, 7 minutes before

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Local storm report, Aug 30, 7:45 PM EDT, 1 minute 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 29, 8:13 PM EDT	Severe Thunderstorm Warning	RNK	Bedford, Franklin, Pittsylvania	62 min
Aug 29, 8:56 PM EDT	Severe Thunderstorm Warning	RNK	Bedford, Campbell, City of Lynchburg	64 min
Aug 29, 9:26 PM EDT	Severe Thunderstorm Warning	RNK	Bedford, Campbell, Halifax, Pittsylvania	64 min
Aug 29, 11:09 PM EDT	Special Weather Statement	RNK	Rockbridge	36 min
Aug 30, 12:48 AM EDT	Special Weather Statement	RNK	Campbell	27 min
Aug 30, 12:52 AM EDT	Special Weather Statement	RNK	Charlotte	23 min
Aug 30, 1:18 AM EDT	Special Weather Statement	RNK	Charlotte	27 min
Aug 30, 2:19 AM EDT	Special Weather Statement	RNK	City of Lynchburg	41 min
Aug 30, 1:19 PM EDT	Special Weather Statement	RNK	Craig	26 min
Aug 30, 1:31 PM EDT	Special Weather Statement	RNK	Wythe	29 min
Aug 30, 1:36 PM EDT	Severe Thunderstorm Warning	RNK	Wythe	35 min
Aug 30, 1:40 PM EDT	Special Weather Statement	RNK	Montgomery	35 min
Aug 30, 1:56 PM EDT	Special Weather Statement	RNK	Floyd	49 min
Aug 30, 2:06 PM EDT	Special Weather Statement	RNK	Craig, Roanoke, City of Salem	39 min
Aug 30, 2:27 PM EDT	Areal Flood Advisory	RNK	Carroll, Floyd, Patrick	2 hr
Aug 30, 2:32 PM EDT	Severe Thunderstorm Warning	RNK	Carroll	28 min
Aug 30, 2:40 PM EDT	Severe Thunderstorm Warning	RNK	Floyd, Patrick	50 min
Aug 30, 2:44 PM EDT	Special Weather Statement	RNK	Giles, Montgomery, City of Radford	61 min
Aug 30, 2:49 PM EDT	Special Weather Statement	RNK	Patrick	26 min
Aug 30, 2:59 PM EDT	Severe Thunderstorm Warning	RNK	Carroll	30 min
Aug 30, 3:11 PM EDT	Special Weather Statement	RNK	Patrick	49 min
Aug 30, 3:18 PM EDT	Severe Thunderstorm Warning	RNK	Floyd, Montgomery	26 min
Aug 30, 3:24 PM EDT	Special Weather Statement	RNK	Grayson	36 min
Aug 30, 3:33 PM EDT	Special Weather Statement	RNK	Pulaski	42 min
Aug 30, 3:38 PM EDT	Special Weather Statement	RNK	City of Martinsville	52 min
Aug 30, 3:53 PM EDT	Severe Thunderstorm Warning	RNK	Henry, Pittsylvania, City of Martinsville	37 min
Aug 30, 3:55 PM EDT	Special Weather Statement	RNK	Pulaski	50 min
Aug 30, 4:11 PM EDT	Special Weather Statement	RNK	City of Galax	34 min
Aug 30, 4:13 PM EDT	Special Weather Statement	RNK	Giles	47 min
Aug 30, 4:25 PM EDT	Severe Thunderstorm Warning	RNK	Henry, Pittsylvania, City of Martinsville	18 min
Aug 30, 4:44 PM EDT	Special Weather Statement	RNK	City of Galax	46 min
Aug 30, 4:49 PM EDT	Severe Thunderstorm Warning	RNK	Carroll, Grayson, City of Galax	26 min
Aug 30, 5:24 PM EDT	Special Weather Statement	RNK	Grayson	36 min
Aug 30, 5:30 PM EDT	Special Weather Statement	RNK	Tazewell	60 min
Aug 30, 5:35 PM EDT	Special Weather Statement	RNK	Tazewell	25 min
Aug 30, 5:55 PM EDT	Areal Flood Advisory	RNK	Bland, Giles, Smyth, Tazewell	2 hr
Aug 30, 6:06 PM EDT	Severe Thunderstorm Warning	RNK	Tazewell	54 min
Aug 30, 6:07 PM EDT	Special Weather Statement	RNK	Botetourt	38 min
Aug 30, 6:17 PM EDT	Flash Flood Warning	RNK	Bland, Tazewell	3 hr
Aug 30, 6:52 PM EDT	Special Weather Statement	RNK	Smyth	53 min
Aug 30, 1:26 PM EDT	Special Weather Statement	RNK	Caswell	34 min
Aug 30, 2:09 PM EDT	Special Weather Statement	RNK	Watauga	36 min
Aug 30, 4:00 PM EDT	Special Weather Statement	RNK	Stokes	45 min
Aug 30, 4:46 PM EDT	Special Weather Statement	RNK	Stokes	29 min
Aug 30, 4:56 PM EDT	Special Weather Statement	RNK	Rockingham	34 min
Aug 30, 5:28 PM EDT	Special Weather Statement	RNK	Surry, Wilkes	47 min
Aug 30, 6:10 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Surry, Wilkes, Yadkin	50 min
Aug 30, 6:28 PM EDT	Special Weather Statement	RNK	Alleghany, Ashe	62 min
Aug 30, 6:33 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Ashe, Wilkes	42 min
Aug 30, 6:58 PM EDT	Areal Flood Advisory	RNK	Alleghany, Ashe, Surry, Wilkes, Yadkin	3 hr
Aug 30, 6:59 PM EDT	Severe Thunderstorm Warning	RNK	Wilkes, Yadkin	27 min
Aug 30, 7:31 PM EDT	Special Weather Statement	RNK	Ashe	59 min
Aug 30, 7:35 PM EDT	Severe Thunderstorm Warning	RNK	Alleghany, Ashe	25 min
Aug 29, 8:48 PM EDT	Special Weather Statement	RNK	Summers	27 min
Aug 29, 8:54 PM EDT	Severe Thunderstorm Warning	RNK	Greenbrier, Summers	66 min
Aug 29, 9:39 PM EDT	Special Weather Statement	RNK	Greenbrier, Monroe	36 min
Aug 30, 4:42 PM EDT	Special Weather Statement	RNK	Mercer	48 min
Aug 30, 6:07 PM EDT	Special Weather Statement	RNK	Greenbrier	38 min

Nearby

Flash Flood Warnings in North Carolina, 2024 Every flash flood warning in 2024

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.