Alert archive / West Virginia / Special Weather Statements in 2021

Special Weather Statement, NWS Blacksburg, VA

August 30, 2021Summers County, West Virginia

NWS Blacksburg, VA issued this special weather statement at Aug 30, 2021, 4:47 AM EDT for Summers County, West Virginia. It was in force for 58 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued
Aug 30, 2021, 4:47 AM EDT (08:47 UTC)
Expired
Aug 30, 2021, 5:45 AM EDT
In force
58 min
Issued by
NWS Blacksburg, VA
Hail
0.25 in
Wind
30

County Summers County, WV

The radar

The Roanoke radar (KFCX), 93 km from the middle of the area, began a volume at 08:48 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 00:00Z, 8.8 hours before the alert went out and 134 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-pSkew-T log-p diagram, Roanoke, VA at 00:00Z on 2021-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 413 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Roanoke, VA at 00:00Z on 2021-08-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -15 square meters per square second.1939Sfc1 km3 km6 kmRMLM
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
413 J/kg
Mixed-layer CIN
-46 J/kg
Mixed-layer LCL
827 m above ground
0-6 km bulk shear
15 kt
0-1 km storm-relative helicity
-15 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

The text

As transmitted.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Aug 30, 3:02 AM EDT, 1 hour 45 minutes earlier.

Area forecast discussion, Aug 30, 3:02 AM EDT, 1 hour 45 minutes before
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Hazardous weather outlook, Aug 30, 4:39 AM EDT, 8 minutes before
Hazardous Weather Outlook
National Weather Service Blacksburg VA
439 AM EDT Mon Aug 30 2021

NCZ001>006-018>020-VAZ014-017>020-022>024-032>035-043>047-058-059-
311200-
Ashe-Alleghany NC-Surry-Stokes-Rockingham-Caswell-Watauga-Wilkes-
Yadkin-Montgomery-Floyd-Craig-Alleghany VA-Bath-Roanoke-Botetourt-
Rockbridge-Patrick-Franklin-Bedford-Amherst-Henry-Pittsylvania-
Campbell-Appomattox-Buckingham-Halifax-Charlotte-
439 AM EDT Mon Aug 30 2021

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.

Scattered thunderstorms will be possible this afternoon and evening.
The main concern will be locally heavy rainfall and localized
flooding or flash flooding.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

The remnants of Hurricane Ida will be passing through the region late
Tuesday through Wednesday. Widespread heavy rainfall is expected
which will lead to flooding, flash flooding, and eventually larger
main stem river flooding. In addition, gusty winds combined with the
heavy rainfall may bring down some trees and result in scattered
power outages. Finally, a few tornadoes will be possible across the
region as the tightly wound up circulation associated with the
remnants of Ida pass through the area late Tuesday into early
Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed Tuesday afternoon through
Wednesday morning for reports of flooding, wind damage, and possibly
tornadoes. Reports should be submitted by calling 1-866-215-4324,
social media, email at rnk.skywarn@noaa.gov or online at
www.weather.gov/rnk.

VAZ007-009>013-015-016-WVZ042>044-507-508-311200-
Tazewell-Smyth-Bland-Giles-Wythe-Pulaski-Grayson-Carroll-Mercer-
Summers-Monroe-Eastern Greenbrier-Western Greenbrier-
439 AM EDT Mon Aug 30 2021

...FLASH FLOOD WATCH IN EFFECT FROM TUESDAY AFTERNOON THROUGH
WEDNESDAY EVENING...

This Hazardous Weather Outlook is for southwest Virginia and
southeast West Virginia.

.DAY ONE...Today and tonight.

Scattered thunderstorms will be possible this afternoon and evening.
The main concern will be locally heavy rainfall and localized
flooding or flash flooding.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday.

Please listen to NOAA Weather Radio or go to weather.gov on the
Internet for more information about the following hazards.

   Flash Flood Watch.

The remnants of Hurricane Ida will be passing through the region late
Tuesday through Wednesday. Widespread heavy rainfall is expected
which will lead to flooding, flash flooding, and eventually larger
main stem river flooding. In addition, gusty winds combined with the
heavy rainfall may bring down some trees and result in scattered
power outages. Finally, a few tornadoes will be possible across the
region as the tightly wound up circulation associated with the
remnants of Ida pass through the area late Tuesday into early
Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will likely be needed. Reports should be
submitted by calling 1-866-215-4324, social media, email at
rnk.skywarn@noaa.gov or online at www.weather.gov/rnk.

RAB

In the hours before

Special weather statement, Aug 29, 11:11 PM EDT, 5 hours 36 minutes before
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Special weather statement, Aug 29, 11:13 PM EDT, 5 hours 34 minutes before
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Special weather statement, Aug 30, 4:47 AM EDT, 0 minutes before
Special Weather Statement
National Weather Service BLACKSBURG VA
447 AM EDT Mon Aug 30 2021

WVZ043-508-300945-
Western Greenbrier WV-Summers WV-
447 AM EDT Mon Aug 30 2021

...A strong thunderstorm will impact portions of
Summers County through 545 AM EDT...

At 446 AM EDT, Doppler radar was tracking a strong thunderstorm near
Daniels, or 7 miles east of Beckley, moving south at 10 mph.

HAZARD...Winds in excess of 30 mph and pea size hail.

SOURCE...Radar indicated.

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

Locations impacted include...
Hinton...
Sandstone...
Pipestem...
Buck...
Jumping Branch...
Lawn...
and Pipestem Resort State Park.

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 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 3782 8064 3776 8067 3771 8066 3766 8070
      3752 8100 3759 8109 3761 8106 3764 8107
      3769 8098 3772 8097 3770 8091 3767 8090
      3768 8088 3773 8090 3774 8092 3777 8089
      3782 8094 3787 8081 3787 8075
TIME...MOT...LOC 0846Z 344DEG 10KT 3778 8105

MAX HAIL SIZE...0.25 IN
MAX WIND GUST...30 MPH

RAB

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 29, 8:01 PM EDTSpecial Weather StatementRNKMontgomery, Roanoke29 min
Aug 29, 8:33 PM EDTSpecial Weather StatementRNKMontgomery, City of Roanoke, City of Salem27 min
Aug 29, 8:34 PM EDTSpecial Weather StatementRNKFranklin26 min
Aug 29, 9:28 PM EDTSpecial Weather StatementRNKFloyd32 min
Aug 29, 9:31 PM EDTSpecial Weather StatementRNKPittsylvania29 min
Aug 29, 10:01 PM EDTSpecial Weather StatementRNKPatrick29 min
Aug 29, 10:03 PM EDTSpecial Weather StatementRNKPittsylvania27 min
Aug 29, 10:07 PM EDTSpecial Weather StatementRNKAppomattox, Campbell, City of Lynchburg23 min
Aug 29, 10:24 PM EDTSpecial Weather StatementRNKHenry, Patrick51 min
Aug 29, 10:29 PM EDTSpecial Weather StatementRNKHalifax46 min
Aug 29, 10:31 PM EDTSpecial Weather StatementRNKAppomattox, Buckingham, Campbell44 min
Aug 29, 11:11 PM EDTSpecial Weather StatementRNKAppomattox, Buckingham34 min
Aug 29, 11:13 PM EDTSpecial Weather StatementRNKHalifax47 min
Aug 30, 5:04 AM EDTFlash Flood WatchRNKAlleghany, Amherst, Bath, Bedford, Bland, Botetourt and 21 more60 hr
Aug 30, 9:06 AM EDTSpecial Weather StatementRNKGiles39 min
Aug 30, 1:27 PM EDTSpecial Weather StatementRNKSmyth33 min
Aug 30, 2:54 PM EDTSpecial Weather StatementRNKBath51 min
Aug 30, 4:01 PM EDTSpecial Weather StatementRNKCity of Buena Vista29 min
Aug 30, 4:37 PM EDTSpecial Weather StatementRNKRockbridge, City of Buena Vista, City of Lexington38 min
Aug 30, 4:39 PM EDTSpecial Weather StatementRNKCity of Danville36 min
Aug 30, 4:56 PM EDTSpecial Weather StatementRNKCity of Danville34 min
Aug 30, 5:25 PM EDTSpecial Weather StatementRNKCity of Danville35 min
Aug 30, 5:51 PM EDTSpecial Weather StatementRNKWythe24 min
Aug 30, 5:58 PM EDTSpecial Weather StatementRNKCity of Danville47 min
Aug 30, 6:13 PM EDTSpecial Weather StatementRNKHalifax32 min
Aug 30, 6:56 PM EDTAreal Flood AdvisoryRNKGrayson, Smyth, Wythe2 hr
Aug 30, 7:11 PM EDTSpecial Weather StatementRNKCity of Martinsville34 min
Aug 30, 7:37 PM EDTSpecial Weather StatementRNKFloyd38 min
Aug 30, 7:39 PM EDTAreal Flood AdvisoryRNKPittsylvania, City of Danville3 hr
Aug 30, 7:44 PM EDTSpecial Weather StatementRNKCity of Danville31 min
Aug 30, 7:45 PM EDTSpecial Weather StatementRNKCarroll30 min
Aug 30, 7:47 PM EDTSevere Thunderstorm WarningRNKHalifax, Pittsylvania35 min
Aug 30, 6:25 PM EDTSpecial Weather StatementRNKSurry35 min
Aug 30, 3:20 AM EDTAreal Flood AdvisoryRNKGreenbrier6 hr
Aug 30, 7:46 AM EDTSpecial Weather StatementRNKSummers44 min

Nearby

Special Weather Statements in West Virginia, 2021Every special weather statement in 2021

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.