Alert archive / West Virginia / Flash Flood Warnings in 2021

Flash Flood Warning 101, NWS Charleston, WV

August 26, 2021Nicholas County, West Virginia

NWS Charleston, WV issued this flash flood warning at Aug 26, 2021, 6:20 PM EDT for Nicholas County, West Virginia. It was in force for 113 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 26, 2021, 6:20 PM EDT (22:20 UTC)
Expired
Aug 26, 2021, 8:13 PM EDT
In force
113 min
Issued by
NWS Charleston, WV
Area
Storm-based polygon
Flood severity
None

County Nicholas County, WV

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 10.3 hours before the alert went out and 152 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 12:00Z on 2021-08-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 499 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 12:00Z on 2021-08-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 24 square meters per square second.1939Sfc1 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
499 J/kg
Mixed-layer CIN
-100 J/kg
Mixed-layer LCL
1041 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
24 m²/s²
0-3 km storm-relative helicity
19 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

155 
WGUS51 KRLX 262220
FFWRLX
WVC067-270115-
/O.NEW.KRLX.FF.W.0101.210826T2220Z-210827T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Charleston WV
620 PM EDT Thu Aug 26 2021

The National Weather Service in Charleston has issued a

* Flash Flood Warning for...
  South Central Nicholas County in southeastern West Virginia...

* Until 915 PM EDT.

* At 620 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1.5 and 2.5 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...
  mainly rural areas of South Central Nicholas County

This includes the following streams and drainages...
  Elevenmile Fork, North Prong Creek, Brushy Meadow Creek, Meadow 
  River, Youngs Creek, Anglins Creek, Hominy Creek, Middle Branch 
  Hominy Creek, Sugargrove Creek and Mouse Fork.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Flooding is occurring or is imminent. It is important to know where 
you are relative to streams, rivers, or creeks which can become 
killers in heavy rains. Campers and hikers should avoid streams or 
creeks.

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

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 3815 8081 3816 8074 3814 8067 3808 8071
      3808 8073 3809 8075 3810 8087 3812 8086

FLASH FLOOD...RADAR INDICATED

$$

30
2 follow-up statements
166 
WGUS71 KRLX 262331
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
731 PM EDT Thu Aug 26 2021

WVC067-270115-
/O.CON.KRLX.FF.W.0101.000000T0000Z-210827T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Nicholas WV-
731 PM EDT Thu Aug 26 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 915 PM EDT THIS 
EVENING FOR SOUTH CENTRAL NICHOLAS COUNTY...

At 731 PM EDT, Even though the heavy rainfall has since ended, 
runoff will continue to cause rapid rises of streams and creeks that 
will exceed their banks in places.

HAZARD...Flash flooding caused by thunderstorms.

SOURCE...Radar.

IMPACT...Flash flooding of small creeks and streams as well as
         other poor drainage and low-lying areas.

Some locations that will experience flash flooding include...
  mainly rural areas of South Central Nicholas County

This includes the following streams and drainages...
  Elevenmile Fork, North Prong Creek, Brushy Meadow Creek, Meadow 
  River, Youngs Creek, Anglins Creek, Hominy Creek, Middle Branch 
  Hominy Creek, Sugargrove Creek and Mouse Fork.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Flooding is occurring or is imminent. It is important to know where 
you are relative to streams, rivers, or creeks which can become 
killers in heavy rains. Campers and hikers should avoid streams or 
creeks.

Please report observed flooding to local emergency services or law 
enforcement and request they pass this information to the National 
Weather Service when you can do so safely.

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 3815 8081 3816 8074 3814 8067 3808 8071
      3808 8073 3809 8075 3810 8087 3812 8086

FLASH FLOOD...RADAR INDICATED

$$

30
843 
WGUS71 KRLX 270013
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
813 PM EDT Thu Aug 26 2021

WVC067-270023-
/O.CAN.KRLX.FF.W.0101.000000T0000Z-210827T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Nicholas WV-
813 PM EDT Thu Aug 26 2021

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTH CENTRAL NICHOLAS 
COUNTY...

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

LAT...LON 3815 8081 3816 8074 3814 8067 3808 8071
      3808 8073 3809 8075 3810 8087 3812 8086

$$

30

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 26, 2:00 PM EDTSpecial Weather StatementRLXTucker30 min
Aug 26, 2:52 PM EDTSpecial Weather StatementRLXPendleton23 min
Aug 26, 4:11 PM EDTSpecial Weather StatementRLXWebster64 min
Aug 26, 5:53 PM EDTSpecial Weather StatementRLXFayette52 min
Aug 26, 7:53 PM EDTSpecial Weather StatementRLXRaleigh52 min

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.