Alert archive / West Virginia / Flash Flood Warnings in 2017

Flash Flood Warning 50, NWS Charleston, WV

August 2, 2017McDowell County, West Virginia

NWS Charleston, WV issued this flash flood warning at Aug 2, 2017, 2:58 PM EDT for McDowell County, West Virginia. It was in force for 3 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 2, 2017, 2:58 PM EDT (18:58 UTC)
Expired
Aug 2, 2017, 6:00 PM EDT
In force
3 hr
Issued by
NWS Charleston, WV
Area
Storm-based polygon
Flood severity
None

County McDowell County, WV

The nearest sounding before it

Roanoke, VA (KRNK), launched 12:00Z, 7.0 hours before the alert went out and 184 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 2017-08-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 69 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 2017-08-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -5 square meters per square second.19395878Sfc1 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
69 J/kg
Mixed-layer CIN
-75 J/kg
Mixed-layer LCL
606 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
-5 m²/s²
0-3 km storm-relative helicity
52 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

769 
WGUS51 KRLX 021858
FFWRLX
WVC047-022200-
/O.NEW.KRLX.FF.W.0050.170802T1858Z-170802T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Charleston WV
258 PM EDT WED AUG 2 2017

The National Weather Service in Charleston West Virginia has issued a

* Flash Flood Warning for...
  South central McDowell County in southern West Virginia...

* Until 600 PM EDT

* At 257 PM EDT, Doppler radar indicated a thunderstorm producing 
  heavy rain across the warned area. Up to two inches of rain have 
  already fallen. Flash flooding is expected to begin shortly.

* Flash flooding will remain over mainly rural areas of south central
  McDowell County.

Additional rainfall amounts of one to two inches are possible in the 
warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

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 3723 8169 3729 8153 3725 8150 3724 8151
      3723 8151 3722 8154 3721 8156 3720 8167

$$

09
2 follow-up statements
299 
WGUS71 KRLX 022021
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
421 PM EDT WED AUG 2 2017

WVC047-022200-
/O.CON.KRLX.FF.W.0050.000000T0000Z-170802T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
McDowell WV-
421 PM EDT WED AUG 2 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 600 PM EDT FOR
SOUTH CENTRAL MCDOWELL COUNTY...

At 415 PM EDT, Doppler radar indicated thunderstorms had produced 
heavy rain across the warned area. Up to three inches of rain fell 
across a small area along Vall Creek, Dry Fork and Jacobs Fork.

Flash flooding will remain over mainly rural areas of south central
McDowell County.

The thunderstorms have moved out of the area, however it will still 
take a while for any high water to recede.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, country roads, farmland, and other low lying
spots.

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

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 3723 8169 3729 8153 3725 8150 3724 8151
      3723 8151 3722 8154 3721 8156 3720 8167

$$

16
107 
WGUS71 KRLX 022151
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
551 PM EDT WED AUG 2 2017

WVC047-022200-
/O.EXP.KRLX.FF.W.0050.000000T0000Z-170802T2200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
McDowell WV-
551 PM EDT WED AUG 2 2017

...THE FLASH FLOOD WARNING FOR SOUTH CENTRAL MCDOWELL COUNTY WILL
EXPIRE AT 600 PM EDT...

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

LAT...LON 3723 8169 3729 8153 3725 8150 3724 8151
      3723 8151 3722 8154 3721 8156 3720 8167

$$

16

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 2, 2:52 PM EDTSpecial Weather StatementRLXMcDowell23 min
Aug 2, 6:33 PM EDTSpecial Weather StatementRLXMason27 min
Aug 2, 6:58 PM EDTSpecial Weather StatementRLXMason32 min
Aug 2, 7:30 PM EDTSpecial Weather StatementRLXJackson30 min

Nearby

Flash Flood Warnings in West Virginia, 2017Every flash flood warning in 2017

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.