Alert archive / West Virginia / Flash Flood Warnings in 2021

Flash Flood Warning 78, NWS Charleston, WV

August 4, 2021Harrison County, Lewis County, West Virginia

NWS Charleston, WV issued this flash flood warning at Aug 4, 2021, 7:18 PM EDT for Harrison County, Lewis County, West Virginia. It was in force for 93 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 4, 2021, 7:18 PM EDT (23:18 UTC)
Expired: Aug 4, 2021, 8:51 PM EDT
In force: 93 min
Issued by: NWS Charleston, WV
Area: Storm-based polygon
Flood severity: None

Counties Harrison County, WV, Lewis County, WV

The radar

The Pittsburgh radar (KPBZ), 148 km from the middle of the area, began a volume at 23:18 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

Pittsburgh, PA (KPIT), launched 12:00Z, 11.3 hours before the alert went out and 136 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: 52 J/kg
Mixed-layer CIN: -90 J/kg
Mixed-layer LCL: 1110 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: -27 m²/s²
0-3 km storm-relative helicity: 27 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

521 
WGUS51 KRLX 042318
FFWRLX
WVC033-041-050230-
/O.NEW.KRLX.FF.W.0078.210804T2318Z-210805T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Charleston WV
718 PM EDT Wed Aug 4 2021

The National Weather Service in Charleston has issued a

* Flash Flood Warning for...
  Southeastern Harrison County in northern West Virginia...
  Northeastern Lewis County in northern West Virginia...

* Until 1030 PM EDT.

* At 718 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. The expected rainfall rate is 1 to 2 inches in . 
  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...
  Clarksburg, Weston, Bridgeport, Stonewood, Nutter Fort, Anmoore, 
  Jackson Mill, West Milford, Lost Creek, Jane Lew and Despard.

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 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 3915 8054 3934 8034 3937 8023 3929 8020
      3928 8020 3927 8020 3924 8019 3910 8030
      3902 8037 3903 8049

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...1-2 INCHES IN 

$$

ARJ

2 follow-up statements

293 
WGUS71 KRLX 050001
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
801 PM EDT Wed Aug 4 2021

WVC033-041-050230-
/O.CON.KRLX.FF.W.0078.000000T0000Z-210805T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Harrison WV-Lewis WV-
801 PM EDT Wed Aug 4 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT THIS 
EVENING FOR SOUTHEASTERN HARRISON AND NORTHEASTERN LEWIS COUNTIES...

At 801 PM EDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 1 and 2 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...
  Clarksburg, Weston, Bridgeport, Stonewood, Nutter Fort, Anmoore, 
  Jackson Mill, West Milford, Lost Creek, Jane Lew and Despard.

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 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 3915 8054 3934 8034 3937 8023 3929 8020
      3928 8020 3927 8020 3924 8019 3910 8030
      3902 8037 3903 8049

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL... INCHES IN 

$$

ARJ

289 
WGUS71 KRLX 050051
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
851 PM EDT Wed Aug 4 2021

WVC033-041-050101-
/O.CAN.KRLX.FF.W.0078.000000T0000Z-210805T0230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Harrison WV-Lewis WV-
851 PM EDT Wed Aug 4 2021

...FLASH FLOOD WARNING IS CANCELLED FOR SOUTHEASTERN HARRISON AND 
NORTHEASTERN LEWIS COUNTIES...

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

LAT...LON 3915 8054 3934 8034 3937 8023 3929 8020
      3928 8020 3927 8020 3924 8019 3910 8030
      3902 8037 3903 8049

$$

ARJ

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 4, 4:13 PM EDT	Special Weather Statement	RLX	Webster	32 min
Aug 4, 5:24 PM EDT	Special Weather Statement	RLX	Tyler	36 min
Aug 4, 6:35 PM EDT	Special Weather Statement	RLX	Lewis	40 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.