Alert archive / West Virginia / Flash Flood Warnings in 2018

Flash Flood Warning 9, NWS Charleston, WV

May 22, 2018Pleasants County, Tyler County, West Virginia; Morgan County, Washington County, Ohio

NWS Charleston, WV issued this flash flood warning at May 22, 2018, 9:55 PM EDT for Pleasants County, Tyler County, West Virginia; Morgan County, Washington County, Ohio. It was in force for 3 hr. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued
May 22, 2018, 9:55 PM EDT (01:55 UTC)
Expired
May 23, 2018, 1:00 AM EDT
In force
3 hr
Issued by
NWS Charleston, WV
Area
Storm-based polygon
Flood severity
None

Counties Morgan County, OH, Washington County, OH, Pleasants County, WV, Tyler County, WV

The radar

The Pittsburgh radar (KPBZ), 139 km from the middle of the area, began a volume at 01:57 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.

What was reported inside it

TimeReportWhereRemark
May 22, 11:00 PM EDTFLOODMiddlebourne, WVTHERE WAS WATER RUNOFF DAMAGE ON ROUTE 18.
May 22, 11:00 PM EDTFLOODSistersville, WVTHERE WAS WATER RUNOFF DAMAGE ON A COUPLE OF ROADWAYS NEAR PADEN CITY.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Pittsburgh, PA (KAGC), launched 00:00Z, 1.9 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-pSkew-T log-p diagram, Pittsburgh, PA at 00:00Z on 2018-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 8 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 2018-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 49 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
8 J/kg
Mixed-layer CIN
-162 J/kg
Mixed-layer LCL
1274 m above ground
0-6 km bulk shear
47 kt
0-1 km storm-relative helicity
49 m²/s²
0-3 km storm-relative helicity
69 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

331 
WGUS51 KRLX 230155
FFWRLX
OHC115-167-WVC073-095-230500-
/O.NEW.KRLX.FF.W.0009.180523T0155Z-180523T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Charleston WV
955 PM EDT TUE MAY 22 2018

The National Weather Service in Charleston West Virginia has issued a

* Flash Flood Warning for...
  Washington County in southeastern Ohio...
  Eastern Morgan County in southeastern Ohio...
  Northeastern Pleasants County in northwestern West Virginia...
  Tyler County in northern West Virginia...

* Until 100 AM EDT

* At 954 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Over two inches of rain has 
  already fallen in some areas. Flash flooding is expected to begin 
  shortly.

* Some locations that will experience flooding include...
  Marietta, St. Marys, Beverly, Middlebourne, Williamstown, Paden
  City, Sistersville, Newport, Matamoras, Lowell, Bristol, Macksburg,
  Friendly, Fly, Lower Salem, Alma, Hackney, Arvilla, Point Lookout
  and New Matamoras.

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.

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 3970 8164 3967 8164 3966 8159 3959 8159
      3958 8148 3965 8146 3959 8135 3961 8128
      3958 8125 3957 8104 3954 8104 3961 8095
      3958 8089 3960 8085 3947 8071 3940 8073
      3936 8079 3939 8093 3940 8176 3971 8174

$$

KISTNER
1 follow-up statement
726 
WGUS71 KRLX 230454
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
1254 AM EDT WED MAY 23 2018

OHC115-167-WVC073-095-230503-
/O.EXP.KRLX.FF.W.0009.000000T0000Z-180523T0500Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Washington OH-Morgan OH-Pleasants WV-Tyler WV-
1254 AM EDT WED MAY 23 2018

...THE FLASH FLOOD WARNING FOR WASHINGTON...EASTERN MORGAN...
NORTHEASTERN PLEASANTS AND TYLER COUNTIES WILL EXPIRE AT 100 AM
EDT...

Small creeks and streams are reported to be receding. The bigger 
creeks will remain elevated through the remainder of the overnight 
hours. Please continue to heed any remaining road closures.

LAT...LON 3970 8164 3967 8164 3966 8159 3959 8159
      3958 8148 3965 8146 3959 8135 3961 8128
      3958 8125 3957 8104 3954 8104 3961 8095
      3958 8089 3960 8085 3947 8071 3940 8073
      3936 8079 3939 8093 3940 8176 3971 8174

$$

30

The office that day

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

IssuedProductOfficeCountiesLasted
May 22, 8:09 PM EDTAreal Flood WarningRLXWebster3 hr
May 22, 9:42 PM EDTSpecial Weather StatementRLXDoddridge, Tyler48 min
May 22, 11:04 PM EDTFlash Flood WarningRLXDoddridge, Pleasants, Ritchie, Tyler, Wood3 hr
May 22, 11:51 PM EDTSpecial Weather StatementRLXBraxton, Calhoun, Gilmer, Lewis, Roane, Upshur24 min
May 23, 12:21 AM EDTFlash Flood WarningRLXBraxton, Calhoun, Gilmer, Ritchie, Roane, Wirt and 1 more3 hr
May 23, 12:30 AM EDTSpecial Weather StatementRLXBraxton, Clay, Webster60 min
May 22, 9:05 PM EDTSpecial Weather StatementRLXVinton55 min
May 22, 9:27 PM EDTSpecial Weather StatementRLXWashington63 min
May 23, 3:31 AM EDTAreal Flood WarningRLXWashington12 hr
May 23, 6:08 AM EDTAreal Flood WarningRLXWashington6 hr
May 23, 2:52 PM EDTAreal Flood WarningRLXWashington3 hr

Nearby

Flash Flood Warnings in West Virginia, 2018Flash Flood Warnings in Ohio, 2018Every flash flood warning in 2018

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.