Alert archive / West Virginia / Flash Flood Warnings in 2021

Flash Flood Warning 93, NWS Charleston, WV

August 19, 2021Boone County, West Virginia

NWS Charleston, WV issued this flash flood warning at Aug 19, 2021, 9:13 AM EDT for Boone County, West Virginia. It was in force for 3 hr. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 19, 2021, 9:13 AM EDT (13:13 UTC)
Expired: Aug 19, 2021, 12:15 PM EDT
In force: 3 hr
Issued by: NWS Charleston, WV
Area: Storm-based polygon
Flood severity: None

County Boone County, WV

The radar

The Charleston,WV radar (KRLX), 32 km from the middle of the area, began a volume at 13:14 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.

What was reported inside it

Time	Report	Where	Remark
Aug 19, 9:15 AM EDT	FLASH FLOOD	Danville, WV	HIGH WATER ON LICK CREEK ROAD IN DANVILLE, WV. BOTH LANES COVERED.
Aug 19, 9:25 AM EDT	FLASH FLOOD	1 Ssw Danville, WV	WATER OVER THE ROAD NEAR DANVILLE ANIMAL CLINIC. VIDEO INCLUDED WITH REPORT ON TWITTER.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 1.2 hours before the alert went out and 224 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: 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.

886 
WGUS51 KRLX 191313
FFWRLX
WVC005-191615-
/O.NEW.KRLX.FF.W.0093.210819T1313Z-210819T1615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

The National Weather Service in Charleston has issued a

* Flash Flood Warning for...
  Northwestern Boone County in central West Virginia...

* Until 1215 PM EDT.

* At 913 AM 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 around 0.5 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...
  Madison, Danville, Turtle Creek and Foster.

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 3803 8193 3804 8195 3804 8196 3809 8196
      3810 8195 3813 8189 3814 8178 3800 8178
      3801 8195

FLASH FLOOD...RADAR INDICATED

$$

JLB

2 follow-up statements

076 
WGUS71 KRLX 191455
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
1055 AM EDT Thu Aug 19 2021

WVC005-191615-
/O.CON.KRLX.FF.W.0093.000000T0000Z-210819T1615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Boone WV-
1055 AM EDT Thu Aug 19 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1215 PM EDT THIS 
AFTERNOON FOR NORTHWESTERN BOONE COUNTY...

At 1055 AM EDT, Emergency management reported flooding along Lick 
Creek Rd in Danville due to thunderstorms producing heavy rain 
across the warned area. Around 2 inches of rain have fallen. 
Additional rainfall is still expected in the warned area. Flash 
flooding is expected to continue.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Emergency management reported.

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...
  Madison, Danville, Turtle Creek and Foster.

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 3803 8193 3804 8195 3804 8196 3809 8196
      3810 8195 3813 8189 3814 8178 3800 8178
      3801 8195

FLASH FLOOD...OBSERVED

$$

JLB

571 
WGUS71 KRLX 191607
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
1207 PM EDT Thu Aug 19 2021

WVC005-191617-
/O.EXP.KRLX.FF.W.0093.000000T0000Z-210819T1615Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Boone WV-
1207 PM EDT Thu Aug 19 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 1215 PM EDT THIS AFTERNOON FOR 
NORTHWESTERN BOONE COUNTY...

Flood waters have receded. Flooding is no longer expected to pose a 
threat. Please continue to heed remaining road closures.

LAT...LON 3803 8193 3804 8195 3804 8196 3809 8196
      3810 8195 3813 8189 3814 8178 3800 8178
      3801 8195

$$

JLB

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 19, 11:37 AM EDT	Flash Flood Warning	RLX	Wayne	3 hr
Aug 19, 12:49 PM EDT	Flash Flood Warning	RLX	Cabell, Wayne	2 hr
Aug 19, 1:33 PM EDT	Flash Flood Warning	RLX	Jackson, Mason	6 hr
Aug 19, 2:10 PM EDT	Flash Flood Warning	RLX	Braxton	5 hr
Aug 19, 2:38 PM EDT	Areal Flood Warning	RLX	Wayne	2 hr

Nearby

Flash Flood Warnings in West Virginia, 2021 Every 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.