Alert archive / Kentucky / Flash Flood Warnings in 2021

Flash Flood Warning 95, NWS Charleston, WV

August 19, 2021Boyd County, Carter County, Lawrence County, Kentucky; Cabell County, Wayne County, West Virginia; Gallia County, Lawrence County, Ohio

NWS Charleston, WV issued this flash flood warning at Aug 19, 2021, 12:49 PM EDT for Boyd County, Carter County, Lawrence County, Kentucky; Cabell County, Wayne County, West Virginia; Gallia County, Lawrence County, Ohio. 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 outline as issued.

The facts

Issued
Aug 19, 2021, 12:49 PM EDT (16:49 UTC)
Expired
Aug 19, 2021, 3:03 PM EDT
In force
2 hr
Issued by
NWS Charleston, WV
Area
Storm-based polygon
Flood severity
None

Counties Boyd County, KY, Carter County, KY, Lawrence County, KY, Gallia County, OH, Lawrence County, OH, Cabell County, WV, Wayne County, WV

The radar

The Charleston,WV radar (KRLX), 78 km from the middle of the area, began a volume at 16:51 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 4.8 hours before the alert went out and 155 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, Cncnati-Daytn, OH at 12:00Z on 2021-08-19Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 33 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, Cncnati-Daytn, OH at 12:00Z on 2021-08-19The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -10 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
33 J/kg
Mixed-layer CIN
-63 J/kg
Mixed-layer LCL
867 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
-10 m²/s²
0-3 km storm-relative helicity
13 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

103 
WGUS51 KRLX 191649
FFWRLX
KYC019-043-127-OHC053-087-WVC011-099-192000-
/O.NEW.KRLX.FF.W.0095.210819T1649Z-210819T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Charleston WV
1249 PM EDT Thu Aug 19 2021

The National Weather Service in Charleston has issued a

* Flash Flood Warning for...
  Boyd County in northeastern Kentucky...
  Southeastern Carter County in northeastern Kentucky...
  Northwestern Lawrence County in northeastern Kentucky...
  Southeastern Gallia County in southeastern Ohio...
  Southeastern Lawrence County in southeastern Ohio...
  Cabell County in central West Virginia...
  Northwestern Wayne County in western West Virginia...

* Until 400 PM EDT.

* At 1249 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 1.5 inches of 
  rain have fallen. Additional rainfall amounts of 1 to 1.5 inches 
  are possible in the warned area. 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...
  Huntington, Ashland, Ironton, Grayson, Coal Grove, Chesapeake, 
  Proctorville, Cannonsburg, Beech Fork State Park, Grayson Lake 
  State Park, Barboursville, Kenova, Milton, Catlettsburg, Ceredo, 
  Durbin, Burnaugh, Centerville, Princess and Coalton.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 3830 8309 3840 8291 3837 8282 3851 8267
      3852 8268 3875 8226 3868 8219 3863 8217
      3860 8219 3859 8219 3859 8222 3847 8206
      3842 8205 3808 8293 3810 8291 3810 8290
      3811 8289 3817 8292 3819 8301

FLASH FLOOD...RADAR INDICATED

$$

JSH
1 follow-up statement
161 
WGUS71 KRLX 191903
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
303 PM EDT Thu Aug 19 2021

KYC019-043-127-OHC053-087-WVC011-099-191913-
/O.CAN.KRLX.FF.W.0095.000000T0000Z-210819T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Boyd KY-Carter KY-Lawrence KY-Gallia OH-Lawrence OH-Cabell WV-Wayne
WV-
303 PM EDT Thu Aug 19 2021

...FLASH FLOOD WARNING IS CANCELLED FOR BOYD, SOUTHEASTERN CARTER, 
NORTHWESTERN LAWRENCE, SOUTHEASTERN GALLIA, SOUTHEASTERN LAWRENCE, 
CABELL AND NORTHWESTERN WAYNE COUNTIES...

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

LAT...LON 3830 8309 3840 8291 3837 8282 3851 8267
      3852 8268 3875 8226 3868 8219 3863 8217
      3860 8219 3859 8219 3859 8222 3847 8206
      3842 8205 3808 8293 3810 8291 3810 8290
      3811 8289 3817 8292 3819 8301

$$

ABE

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 19, 9:13 AM EDTFlash Flood WarningRLXBoone3 hr
Aug 19, 11:37 AM EDTFlash Flood WarningRLXWayne3 hr
Aug 19, 1:33 PM EDTFlash Flood WarningRLXJackson, Mason6 hr
Aug 19, 2:10 PM EDTFlash Flood WarningRLXBraxton5 hr
Aug 19, 2:38 PM EDTAreal Flood WarningRLXWayne2 hr
Aug 19, 3:09 PM EDTFlash Flood WarningRLXAthens3 hr

Nearby

Flash Flood Warnings in Kentucky, 2021Flash Flood Warnings in West Virginia, 2021Flash Flood Warnings in Ohio, 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.