Alert archive / West Virginia / Flash Flood Warnings in 2021

Flash Flood Warning 12, NWS Charleston, WV

June 9, 2021Clay County, Kanawha County, West Virginia

NWS Charleston, WV issued this flash flood warning at Jun 9, 2021, 2:20 PM EDT for Clay County, Kanawha County, West Virginia. It was in force for 55 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
Jun 9, 2021, 2:20 PM EDT (18:20 UTC)
Expired
Jun 9, 2021, 3:15 PM EDT
In force
55 min
Issued by
NWS Charleston, WV
Area
Storm-based polygon
Flood severity
None

Counties Clay County, WV, Kanawha County, WV

The radar

The Charleston,WV radar (KRLX), 37 km from the middle of the area, began a volume at 18:20 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 12:00Z, 6.3 hours before the alert went out and 209 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 2021-06-09Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 92 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 2021-06-09The 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
92 J/kg
Mixed-layer CIN
-99 J/kg
Mixed-layer LCL
1085 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
42 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

196 
WGUS51 KRLX 091820
FFWRLX
WVC015-039-091915-
/O.NEW.KRLX.FF.W.0012.210609T1820Z-210609T1915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Charleston WV
220 PM EDT Wed Jun 9 2021

The National Weather Service in Charleston has issued a

* Flash Flood Warning for...
  East Central Kanawha County in central West Virginia...
  West Central Clay County in north central West Virginia...

* Until 315 PM EDT.

* At 220 PM EDT, Doppler radar indicated a persistent band of very 
  heavy rain across the warned area. Between 1 and 1.5 inches of 
  rain have fallen in less than an hour with an additional quick 1/2 
  to 3/4 inch possible. Flash flooding is ongoing or expected to 
  begin shortly.

  HAZARD...Flash flooding caused by heavy rain.

  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...
  Procious.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3836 8129 3834 8132 3833 8135 3834 8139
      3834 8140 3837 8142 3840 8142 3843 8140
      3845 8138 3850 8130 3852 8120 3851 8118
      3848 8119 3842 8124

FLASH FLOOD...RADAR INDICATED

$$

HART
2 follow-up statements
896 
WGUS71 KRLX 091855
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
255 PM EDT Wed Jun 9 2021

WVC015-039-091915-
/O.CON.KRLX.FF.W.0012.000000T0000Z-210609T1915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clay WV-Kanawha WV-
255 PM EDT Wed Jun 9 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 315 PM EDT THIS 
AFTERNOON FOR EAST CENTRAL KANAWHA AND WEST CENTRAL CLAY COUNTIES...

At 255 PM EDT, Doppler radar indicated heavy rain was moving out of 
the area. However, water likely remains high across the warned area 
where 1 to 3 inches of rain have fallen.  Flash flooding is ongoing 
or expected to begin shortly.

HAZARD...Flash flooding caused by heavy rain.

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...
  Procious.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

&&

LAT...LON 3836 8129 3834 8132 3833 8135 3834 8139
      3834 8140 3837 8142 3840 8142 3843 8140
      3845 8138 3850 8130 3852 8120 3851 8118
      3848 8119 3842 8124

FLASH FLOOD...RADAR INDICATED

$$

HART
200 
WGUS71 KRLX 091911
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
311 PM EDT Wed Jun 9 2021

WVC015-039-091921-
/O.EXP.KRLX.FF.W.0012.000000T0000Z-210609T1915Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Clay WV-Kanawha WV-
311 PM EDT Wed Jun 9 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 315 PM EDT THIS AFTERNOON FOR 
EAST CENTRAL KANAWHA AND WEST CENTRAL CLAY COUNTIES...

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

LAT...LON 3836 8129 3834 8132 3833 8135 3834 8139
      3834 8140 3837 8142 3840 8142 3843 8140
      3845 8138 3850 8130 3852 8120 3851 8118
      3848 8119 3842 8124

$$

JZ

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 8, 8:18 PM EDTFlash Flood WarningRLXMcDowell3 hr
Jun 8, 9:54 PM EDTSpecial Weather StatementRLXFayette36 min
Jun 8, 10:27 PM EDTSpecial Weather StatementRLXBraxton, Webster33 min
Jun 8, 10:36 PM EDTSpecial Weather StatementRLXNicholas24 min
Jun 8, 11:22 PM EDTSpecial Weather StatementRLXWebster23 min
Jun 8, 11:48 PM EDTSpecial Weather StatementRLXPocahontas, Webster27 min
Jun 9, 12:16 AM EDTSpecial Weather StatementRLXPocahontas29 min
Jun 9, 12:45 AM EDTSpecial Weather StatementRLXPocahontas45 min
Jun 9, 11:04 AM EDTAreal Flood WarningRLXMason2 hr
Jun 9, 3:34 PM EDTFlash Flood WarningRLXBoone, Raleigh95 min
Jun 9, 3:57 PM EDTSpecial Weather StatementRLXMcDowell48 min
Jun 9, 6:36 PM EDTFlash Flood WarningRLXCabell117 min
Jun 9, 7:39 PM EDTSpecial Weather StatementRLXMason36 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; radar from the NEXRAD Level II archive.