Alert archive / West Virginia / Flash Flood Warnings in 2021

Flash Flood Warning 88, NWS Charleston, WV

August 18, 2021Logan County, Mingo County, West Virginia

NWS Charleston, WV issued this flash flood warning at Aug 18, 2021, 2:35 AM EDT for Logan County, Mingo County, West Virginia. It was in force for 3 hr. 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 18, 2021, 2:35 AM EDT (06:35 UTC)
Expired
Aug 18, 2021, 5:53 AM EDT
In force
3 hr
Issued by
NWS Charleston, WV
Area
Storm-based polygon
Flood severity
None

Counties Logan County, WV, Mingo County, WV

The radar

The Charleston,WV radar (KRLX), 73 km from the middle of the area, began a volume at 06:36 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, 6.6 hours before the alert went out and 244 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 2021-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 11 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Roanoke, VA at 00:00Z on 2021-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 174 square meters per square second.193958Sfc1 km3 km6 km9 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
11 J/kg
Mixed-layer CIN
-51 J/kg
Mixed-layer LCL
655 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
174 m²/s²
0-3 km storm-relative helicity
260 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.2

Open this sounding in Storm Lab

The text

As transmitted.

079 
WGUS51 KRLX 180635
FFWRLX
WVC045-059-181030-
/O.NEW.KRLX.FF.W.0088.210818T0635Z-210818T1030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Charleston WV
235 AM EDT Wed Aug 18 2021

The National Weather Service in Charleston has issued a

* Flash Flood Warning for...
  Logan County in southern West Virginia...
  Northern Mingo County in southern West Virginia...

* Until 630 AM EDT.

* At 235 AM EDT, Doppler radar indicated repetitive rain showers 
  producing heavy rain across the warned area. Between 2 and 3 
  inches of rain have fallen. Flash flooding is ongoing or expected 
  to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Williamson, Logan, Chapmanville, Man, Delbarton, Holden, Mount 
  Gay-Shamrock, Chief Logan State, Red Jacket, Chattaroy, Mallory, 
  Amherstdale-Robinette, West Logan, Mitchell Heights, Verdunville, 
  Mount Gay, Switzer, Chauncey, Dingess and Sarah Ann.

This includes the following streams and drainages...
  West Fork Twelvepole Creek, Elk Creek, Hoover Fork, Sandlick 
  Creek, Lick Creek, Bills Branch, Hensley Big Branch, Tug Fork, 
  Mate Creek, Sang Branch, Garrett Fork, Rum Creek, Baldwin Fork, 
  Buffalo Creek, Cow Creek, Huff Creek, Sandmill Hollow, Turkey 
  Creek, Laurel Fork, Cabin Branch, Pine Creek, Big Springs Branch, 
  Workman Fork, Guyandotte River, Fivemile Creek, Miller Creek, Slab 
  Fork, Right Fork Browning Fork, Trace Fork, Big Sang Kill, Whitman 
  Creek, Kiah Creek, Big Creek, Left Fork Rich Creek, Right Fork 
  Trace Fork, Rockhouse Creek, Rich Creek, Middle Fork Spruce Fork, 
  Ruth Trace Branch, Copperas Mine Fork, Peg Fork, Big Branch, Hell 
  Creek, Tug Fork River, Sugartree Creek, Island Creek, Right Hand 
  Fork Elk Creek, Crawley Creek, Rocky Branch, South Fork Crawley 
  Creek, West Fork Big Harts Creek, Left Fork Elk Creek, Caney Fork, 
  Marrowbone Creek, Beech Creek, Spruce Fork, Pigeon Creek, 
  Rockhouse Fork, Mud Fork, Missouri Fork, Dingess Run, East Fork 
  Twelvepole Creek, Millstone Branch, Breeden Creek, Big Harts 
  Creek, Jennie Creek, Brushy Fork, Dingess Trace Branch, Hewett 
  Creek, Rockhouse Branch, Left Fork Whitman Creek, Left Fork Island 
  Creek, Den Branch, Seng Camp Creek, Garland Fork, Adkins Fork, 
  Middle Fork Elk Creek, Neely Branch, Green Branch, Upper Burning 
  Creek, Left Fork Beech Creek, Pigeonroost Branch, Mill Creek, 
  Right Fork Buffalo Creek, Conley Branch, Perry Fork and Little 
  White Oak Branch.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

Please report Severe Weather to the National Weather Service by 
calling toll free, 800 401 9535, when you can do so safely. You may 
also report severe weather by posting your report to the Charleston 
West Virginia National Weather Service Facebook Page, or by using 
the Twitter Hashtag, NWSRLX.

&&

LAT...LON 3770 8205 3764 8218 3765 8219 3763 8221
      3766 8224 3766 8226 3768 8230 3770 8230
      3774 8233 3776 8231 3776 8233 3778 8233
      3782 8238 3792 8234 3793 8232 3798 8216
      3800 8203 3793 8180 3771 8176 3766 8181

FLASH FLOOD...RADAR INDICATED

$$

ARJ
2 follow-up statements
493 
WGUS51 KRLX 180639 CCA
FFWRLX
WVC045-059-181030-
/O.COR.KRLX.FF.W.0088.210818T0635Z-210818T1030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning...CORRECTED
National Weather Service Charleston WV
239 AM EDT Wed Aug 18 2021

The National Weather Service in Charleston has issued a

* Flash Flood Warning for...
  Logan County in southern West Virginia...
  Northern Mingo County in southern West Virginia...

* Until 630 AM EDT.

* At 235 AM EDT, Doppler radar indicated repetitive rain showers 
  producing heavy rain across the warned area. Between 2 and 3 
  inches of rain have fallen. Flash flooding is ongoing or expected 
  to begin shortly.

  HAZARD...Flash flooding caused by thunderstorms.

  SOURCE...Radar.

  IMPACT...Flash flooding of small creeks and streams, urban
           areas, highways, streets and underpasses as well as
           other poor drainage and low-lying areas.

* Some locations that will experience flash flooding include...
  Williamson, Logan, Chapmanville, Man, Delbarton, Holden, Mount 
  Gay-Shamrock, Chief Logan State, Red Jacket, Chattaroy, Mallory, 
  Amherstdale-Robinette, West Logan, Mitchell Heights, Verdunville, 
  Mount Gay, Switzer, Chauncey, Dingess and Sarah Ann.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don't drown when encountering flooded roads. Most flood 
deaths occur in vehicles.

Be especially cautious at night when it is harder to recognize the 
dangers of flooding.

Please report Severe Weather to the National Weather Service by 
calling toll free, 800 401 9535, when you can do so safely. You may 
also report severe weather by posting your report to the Charleston 
West Virginia National Weather Service Facebook Page, or by using 
the Twitter Hashtag, NWSRLX.

&&

LAT...LON 3770 8205 3764 8218 3765 8219 3763 8221
      3766 8224 3766 8226 3768 8230 3770 8230
      3774 8233 3776 8231 3776 8233 3778 8233
      3782 8238 3792 8234 3793 8232 3798 8216
      3800 8203 3793 8180 3771 8176 3766 8181

FLASH FLOOD...RADAR INDICATED

$$

ARJ
569 
WGUS71 KRLX 180953
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
553 AM EDT Wed Aug 18 2021

WVC045-059-181003-
/O.CAN.KRLX.FF.W.0088.000000T0000Z-210818T1030Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Logan WV-Mingo WV-
553 AM EDT Wed Aug 18 2021

...FLASH FLOOD WARNING IS CANCELLED FOR LOGAN AND NORTHERN MINGO 
COUNTIES...

The heavy rain has ended. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

A Flash Flood Watch remains in effect until 1200 PM EDT Wednesday 
for portions of northeast Kentucky, southeast Ohio and West Virginia.

LAT...LON 3770 8205 3764 8218 3765 8219 3763 8221
      3766 8224 3766 8226 3768 8230 3770 8230
      3774 8233 3776 8231 3776 8233 3778 8233
      3782 8238 3792 8234 3793 8232 3798 8216
      3800 8203 3793 8180 3771 8176 3766 8181

$$

ARJ

The office that day

Everything else NWS Charleston, WV issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 18, 3:55 AM EDTFlash Flood WarningRLXCabell, Lincoln, Mason, Putnam, Wayne6 hr
Aug 18, 4:37 AM EDTAreal Flood WarningRLXLincoln9 hr
Aug 18, 4:48 AM EDTFlash Flood WarningRLXMason6 hr

Nearby

Flash Flood Warnings in West Virginia, 2021Every flash flood warning 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.