Alert archive / West Virginia / Flash Flood Warnings in 2017

Flash Flood Warning 8, NWS Charleston, WV

April 16, 2017Washington County, Ohio; Pleasants County, Ritchie County, Wood County, West Virginia

NWS Charleston, WV issued this flash flood warning at Apr 16, 2017, 9:43 PM EDT for Washington County, Ohio; Pleasants County, Ritchie County, Wood 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
Apr 16, 2017, 9:43 PM EDT (01:43 UTC)
Expired
Apr 17, 2017, 12:45 AM EDT
In force
3 hr
Issued by
NWS Charleston, WV
Area
Storm-based polygon
Flood severity
None

Counties Washington County, OH, Pleasants County, WV, Ritchie County, WV, Wood County, WV

The radar

The Charleston,WV radar (KRLX), 119 km from the middle of the area, began a volume at 01:44 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 (KAGC), launched 00:00Z, 1.7 hours before the alert went out and 172 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, Pittsburgh, PA at 00:00Z on 2017-04-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 239 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, Pittsburgh, PA at 00:00Z on 2017-04-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 189 square meters per square second.193958Sfc1 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
239 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
1036 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
189 m²/s²
0-3 km storm-relative helicity
199 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.1

Open this sounding in Storm Lab

The text

As transmitted.

808 
WGUS51 KRLX 170143
FFWRLX
OHC167-WVC073-085-107-170445-
/O.NEW.KRLX.FF.W.0008.170417T0143Z-170417T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Charleston WV
943 PM EDT SUN APR 16 2017

The National Weather Service in Charleston West Virginia has issued a

* Flash Flood Warning for...
  Southern Washington County in southeastern Ohio...
  Pleasants County in northwestern West Virginia...
  Northwestern Ritchie County in northwestern West Virginia...
  Northeastern Wood County in northwestern West Virginia...

* Until 1245 AM EDT

* At 941 PM EDT, emergency management officials reported 
  thunderstorms producing heavy rain across the warned area. 
  Flooding has been reported in Williamstown along North Dry Run 
  Road and North Oak Grove Road. Up to two inches of rain have 
  already fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Parkersburg, Marietta, Belpre, St. Marys, Vienna, Williamstown,
  Belmont, Boaz, Newport, North Hills, Willow Island, Maxwell,
  Schultz, Waverly, Fleming, Bartlett and Nutter Farm.

Additional rainfall amounts of half an inch to an inch are possible 
in the warned area.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.

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 3938 8106 3923 8112 3931 8183 3932 8184
      3932 8185 3945 8184 3945 8183 3947 8183
      3949 8181

$$

14
2 follow-up statements
394 
WGUS71 KRLX 170242
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
1042 PM EDT SUN APR 16 2017

OHC167-WVC073-085-107-170445-
/O.CON.KRLX.FF.W.0008.000000T0000Z-170417T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Washington OH-Pleasants WV-Ritchie WV-Wood WV-
1042 PM EDT SUN APR 16 2017

...THE FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1245 AM EDT FOR
SOUTHERN WASHINGTON...PLEASANTS...NORTHWESTERN RITCHIE AND
NORTHEASTERN WOOD COUNTIES...

At 1039 PM EDT, moderate to heavy rain is continuing to occur across 
parts of the Mid Ohio Valley. Up to two inches of rain have already 
fallen. Flash flooding is expected to begin shortly.

Some locations that will experience flooding include...
Parkersburg, Marietta, Belpre, St. Marys, Vienna, Williamstown,
Belmont, Boaz, Newport, North Hills, Willow Island, Maxwell, Schultz,
Waverly, Fleming, Bartlett and Nutter Farm.

Additional rainfall amounts of half and inch to an inch are possible 
in the warned area.

Flooding has already been reported in the town of Williamstown, West 
Virginia near North Dry Run Road and North Oak Grove Road. In 
addition, water has been reported across the roadway along State 
Route 7 between mile markers 29 and 30 in Washington county Ohio. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be especially cautious at night when it is harder to recognize the
dangers of flooding.

In hilly terrain there are hundreds of low water crossings which are
potentially dangerous in heavy rain. Do not attempt to cross flooded
roads. Find an alternate route.

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 3938 8106 3923 8112 3931 8183 3932 8184
      3932 8185 3945 8184 3945 8183 3947 8183
      3949 8181

$$

14
714 
WGUS71 KRLX 170442
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
1242 AM EDT MON APR 17 2017

OHC167-WVC073-085-107-170452-
/O.EXP.KRLX.FF.W.0008.000000T0000Z-170417T0445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Washington OH-Pleasants WV-Ritchie WV-Wood WV-
1242 AM EDT MON APR 17 2017

...THE FLASH FLOOD WARNING FOR SOUTHERN WASHINGTON...PLEASANTS...
NORTHWESTERN RITCHIE AND NORTHEASTERN WOOD COUNTIES WILL EXPIRE AT
1245 AM 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 3938 8106 3923 8112 3931 8183 3932 8184
      3932 8185 3945 8184 3945 8183 3947 8183
      3949 8181

$$

08

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 16, 8:35 PM EDTSpecial Weather StatementRLXAthens, Washington3 hr
Apr 16, 8:20 PM EDTSpecial Weather StatementRLXPleasants, Ritchie25 min
Apr 16, 8:45 PM EDTSpecial Weather StatementRLXDoddridge, Pleasants30 min
Apr 16, 9:05 PM EDTSpecial Weather StatementRLXDoddridge, Pleasants, Ritchie3 hr

Nearby

Flash Flood Warnings in West Virginia, 2017Flash Flood Warnings in Ohio, 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; radar from the NEXRAD Level II archive.