Alert archive / North Carolina / Flash Flood Warnings in 2024

Flash Flood Warning 26, NWS Blacksburg, VA

August 2, 2024Watauga County, North Carolina

NWS Blacksburg, VA issued this flash flood warning at Aug 2, 2024, 1:22 PM EDT for Watauga County, North Carolina. It was in force for 4 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 2, 2024, 1:22 PM EDT (17:22 UTC)
Expired: Aug 2, 2024, 5:07 PM EDT
In force: 4 hr
Issued by: NWS Blacksburg, VA
Area: Storm-based polygon
Flood severity: None

County Watauga County, NC

The radar

The Knoxville radar (KMRX), 153 km from the middle of the area, began a volume at 17:21 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, 5.4 hours before the alert went out and 162 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: 811 J/kg
Mixed-layer CIN: -87 J/kg
Mixed-layer LCL: 1010 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: -14 m²/s²
0-3 km storm-relative helicity: 4 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 2, 10:51 AM EDT, 2 hours 31 minutes earlier.

Area forecast discussion, Aug 2, 10:51 AM EDT, 2 hours 31 minutes before

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Hazardous weather outlook, Aug 2, 5:33 AM EDT, 7 hours 49 minutes before

Hazardous Weather Outlook
National Weather Service Blacksburg VA
533 AM EDT Fri Aug 2 2024

NCZ001-002-018-VAZ007-009>013-015-018>020-WVZ042>044-507-508-030945-
Ashe-Alleghany NC-Watauga-Tazewell-Smyth-Bland-Giles-Wythe-Pulaski-
Grayson-Craig-Alleghany VA-Bath-Mercer-Summers-Monroe-
Eastern Greenbrier-Western Greenbrier-
533 AM EDT Fri Aug 2 2024

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

.DAY ONE...Today and tonight.

There is a marginal risk of excessive rainfall and severe
thunderstorms. Localized flooding, damaging wind are possible this
afternoon and evening.

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

There is a marginal risk of excessive rainfall on Saturday.
Localized flooding is possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NCZ003>005-019-020-VAZ014-016-017-022>024-032>035-043>045-030945-
Surry-Stokes-Rockingham-Wilkes-Yadkin-Montgomery-Carroll-Floyd-
Roanoke-Botetourt-Rockbridge-Patrick-Franklin-Bedford-Amherst-Henry-
Pittsylvania-Campbell-
533 AM EDT Fri Aug 2 2024

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

.DAY ONE...Today and tonight.

There is a marginal risk of excessive rainfall and severe
thunderstorms this afternoon and evening. Localized flooding and
damaging wind are possible.

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

There is a marginal risk of excessive rainfall and severe
thunderstorms on Saturday. Localized flooding and damaging wind are
possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

NCZ006-VAZ046-047-058-059-030945-
Caswell-Appomattox-Buckingham-Halifax-Charlotte-
533 AM EDT Fri Aug 2 2024

...HEAT ADVISORY REMAINS IN EFFECT FROM NOON TO 8 PM EDT FRIDAY...

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

   Heat Advisory.

There is a marginal risk of excessive rainfall and severe
thunderstorms this afternoon and evening. Localized flooding and
damaging wind are possible.

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

There is a marginal to slight risk of excessive rainfall and a
marginal risk of severe thunderstorms on Saturday. Localized
flooding and damaging wind are possible.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not expected at this time.

In the hours before

Special weather statement, Aug 2, 12:11 PM EDT, 1 hour 11 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
1211 PM EDT Fri Aug 2 2024

WVZ042-021645-
Mercer WV-
1211 PM EDT Fri Aug 2 2024

...STRONG THUNDERSTORMS WILL IMPACT
MERCER COUNTY THROUGH 1245 PM EDT...

At 1211 PM EDT, Doppler radar was tracking strong thunderstorms along
a line extending from near Mullens to near Matoaka to Bramwell.
Movement was east at 45 mph.

HAZARD...Wind gusts up to 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

Locations impacted include...
Bluefield...
Princeton...
Athens...
Matoaka...
Camp Creek...
Bramwell...
and Oakvale.

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.

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

These storms 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 3740 8128 3746 8131 3747 8128 3750 8126
      3751 8121 3757 8120 3760 8114 3758 8109
      3743 8086 3738 8088 3736 8086 3734 8086
      3729 8095 3729 8098 3730 8099 3727 8114
      3727 8127 3733 8135
TIME...MOT...LOC 1611Z 258DEG 38KT 3754 8130 3742 8120 3733 8130

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

RAB

Special weather statement, Aug 2, 12:40 PM EDT, 42 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
1240 PM EDT Fri Aug 2 2024

NCZ018-019-021715-
Wilkes NC-Watauga NC-
1240 PM EDT Fri Aug 2 2024

...A STRONG THUNDERSTORM WILL IMPACT
SOUTHWESTERN WILKES AND SOUTHEASTERN WATAUGA COUNTIES THROUGH 115 PM
EDT...

At 1239 PM EDT, Doppler radar was tracking a strong thunderstorm over
Aho, or over Blowing Rock, moving east at 10 mph.

HAZARD...Wind gusts up to 40 mph and pea size hail.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor hail damage to vegetation is
         possible.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

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

&&

LAT...LON 3608 8143 3607 8144 3609 8146 3609 8147
      3610 8148 3610 8151 3612 8155 3612 8176
      3618 8180 3626 8151 3624 8148 3626 8146
      3626 8144 3627 8143 3606 8140
TIME...MOT...LOC 1639Z 261DEG 9KT 3613 8162

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...40 MPH

WP

Local storm report, Aug 2, 12:45 PM EDT, 37 minutes before

Preliminary Local Storm Report
National Weather Service Blacksburg VA
1245 PM EDT Fri Aug 2 2024

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1235 PM     Hail             2 W Princeton           37.37N 81.14W
08/02/2024  E0.25 Inch       Mercer             WV   Trained Spotter

            pea sized hail.

&&

JCB

Special weather statement, Aug 2, 1:11 PM EDT, 11 minutes before

Special Weather Statement
National Weather Service BLACKSBURG VA
111 PM EDT Fri Aug 2 2024

VAZ011-021800-
Giles VA-
111 PM EDT Fri Aug 2 2024

...A STRONG THUNDERSTORM WILL IMPACT CENTRAL GILES COUNTY THROUGH
200 PM EDT...

At 110 PM EDT, Doppler radar was tracking a strong thunderstorm over
Narrows, moving east at 15 mph.

HAZARD...Wind gusts up to 50 mph.

SOURCE...Radar indicated.

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

Locations impacted include...
Pearisburg...
Narrows...
and Bane.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 3736 8086 3738 8084 3735 8075 3733 8067
      3726 8070 3730 8086 3734 8086 3735 8085
TIME...MOT...LOC 1710Z 271DEG 13KT 3732 8077

MAX HAIL SIZE...0.00 IN
MAX WIND GUST...50 MPH

RAB

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 2, 1:11 PM EDT	Special Weather Statement	RNK	Giles	49 min
Aug 2, 1:23 PM EDT	Special Weather Statement	RNK	Tazewell	52 min
Aug 2, 1:46 PM EDT	Severe Thunderstorm Warning	RNK	Grayson, Smyth	44 min
Aug 2, 2:18 PM EDT	Severe Thunderstorm Warning	RNK	Montgomery	24 min
Aug 2, 2:49 PM EDT	Special Weather Statement	RNK	City of Roanoke	41 min
Aug 2, 2:51 PM EDT	Special Weather Statement	RNK	Rockbridge	24 min
Aug 2, 3:01 PM EDT	Special Weather Statement	RNK	Grayson	29 min
Aug 2, 3:18 PM EDT	Special Weather Statement	RNK	Amherst, City of Buena Vista, City of Lynchburg	27 min
Aug 2, 3:25 PM EDT	Special Weather Statement	RNK	Halifax	35 min
Aug 2, 3:27 PM EDT	Severe Thunderstorm Warning	RNK	Bedford, City of Lynchburg	48 min
Aug 2, 3:45 PM EDT	Special Weather Statement	RNK	Carroll, Floyd	45 min
Aug 2, 3:47 PM EDT	Special Weather Statement	RNK	Amherst	28 min
Aug 2, 3:52 PM EDT	Special Weather Statement	RNK	Pittsylvania	23 min
Aug 2, 4:03 PM EDT	Special Weather Statement	RNK	Appomattox, City of Lynchburg	27 min
Aug 2, 4:04 PM EDT	Severe Thunderstorm Warning	RNK	Halifax, Pittsylvania	41 min
Aug 2, 4:08 PM EDT	Special Weather Statement	RNK	Halifax	37 min
Aug 2, 4:28 PM EDT	Special Weather Statement	RNK	Appomattox	32 min
Aug 2, 4:35 PM EDT	Severe Thunderstorm Warning	RNK	Appomattox, Campbell, Charlotte	40 min
Aug 2, 4:45 PM EDT	Severe Thunderstorm Warning	RNK	Campbell, Charlotte, Halifax	45 min
Aug 2, 4:57 PM EDT	Areal Flood Advisory	RNK	Pittsylvania, City of Danville	3 hr
Aug 2, 4:59 PM EDT	Special Weather Statement	RNK	City of Danville	31 min
Aug 2, 5:48 PM EDT	Flash Flood Warning	RNK	Pittsylvania, City of Danville	5 hr
Aug 2, 5:53 PM EDT	Areal Flood Advisory	RNK	Charlotte, Halifax	5 hr
Aug 2, 12:40 PM EDT	Special Weather Statement	RNK	Watauga	35 min
Aug 2, 1:16 PM EDT	Areal Flood Advisory	RNK	Watauga	6 min
Aug 2, 3:57 PM EDT	Special Weather Statement	RNK	Stokes	33 min
Aug 2, 5:31 PM EDT	Special Weather Statement	RNK	Caswell	44 min
Aug 2, 5:55 PM EDT	Severe Thunderstorm Warning	RNK	Caswell	35 min
Aug 2, 12:11 PM EDT	Special Weather Statement	RNK	Mercer	34 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.