Alert archive / Ohio / Flash Flood Warnings in 2021

Flash Flood Warning 90, NWS Charleston, WV

August 18, 20215 counties in Ohio; Mason County, West Virginia

NWS Charleston, WV issued this flash flood warning at Aug 18, 2021, 4:48 AM EDT for 5 counties in Ohio; Mason County, West Virginia. It was in force for 6 hr. 8 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
Aug 18, 2021, 4:48 AM EDT (08:48 UTC)
Expired
Aug 18, 2021, 10:45 AM EDT
In force
6 hr
Issued by
NWS Charleston, WV
Area
Storm-based polygon
Flood severity
None

Counties Athens County, OH, Gallia County, OH, Jackson County, OH, Meigs County, OH, Vinton County, OH, Mason County, WV

The radar

The Charleston,WV radar (KRLX), 116 km from the middle of the area, began a volume at 08:51 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
Aug 18, 5:06 AM EDTFLASH FLOOD1 Wsw Rutland, OHFLOODING REPORTED ALONG DAVIDSON ROAD.
Aug 18, 5:06 AM EDTFLASH FLOOD1 Wsw Rutland, OHLASHER ROAD FLOODED DUE TO LEADING CREEK RISING OUT OF ITS BANKS.
Aug 18, 5:20 AM EDTFLASH FLOOD5 Wnw Albany, OHFLOODING REPORTED ALONG STATE ROUTE 356 NEAR THE INTERSECTION OF STANLEY ROAD.
Aug 18, 5:24 AM EDTFLASH FLOOD6 Ese Zaleski, OHFLOODING REPORTED ALONG THE EASTBOUND LANES OF US-50.
Aug 18, 5:44 AM EDTFLASH FLOOD1 Sse Lake Hope State P, OHFLOODING REPORTED ALONG ROUTE 278 NEAR LAKE HOPE STATE PARK.
Aug 18, 6:50 AM EDTFLASH FLOOD5 Ese Lake Hope State P, OHFLOODING REPORTED ALONG STATE ROUTE 356 NEAR THE INTERSECTION OF STATE ROUTE 681.
Aug 18, 6:58 AM EDTFLASH FLOOD1 N Albany, OHFLOODING REPORTED ALONG WASHINGTON ROAD IN THE TOWN OF ALBANY.
Aug 18, 7:00 AM EDTHEAVY RAIN 3Middleport, OH3.00 INCHES OF RAIN REPORTED IN MIDDLEPORT, OHIO THROUGH 7 AM THIS MORNING.

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

The nearest sounding before it

Pittsburgh, PA (KPIT), launched 00:00Z, 8.8 hours before the alert went out and 231 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 2021-08-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 372 joules per kilogram.LCLEL10008507005003002001001 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 2021-08-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 34 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
372 J/kg
Mixed-layer CIN
-1 J/kg
Mixed-layer LCL
826 m above ground
0-6 km bulk shear
17 kt
0-1 km storm-relative helicity
34 m²/s²
0-3 km storm-relative helicity
78 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

027 
WGUS51 KRLX 180848
FFWRLX
OHC009-053-079-105-163-WVC053-181445-
/O.NEW.KRLX.FF.W.0090.210818T0848Z-210818T1445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Charleston WV
448 AM EDT Wed Aug 18 2021

The National Weather Service in Charleston has issued a

* Flash Flood Warning for...
  Southwestern Athens County in southeastern Ohio...
  Northeastern Gallia County in southeastern Ohio...
  Northeastern Jackson County in southeastern Ohio...
  Northwestern Meigs County in southeastern Ohio...
  Eastern Vinton County in southeastern Ohio...
  Northwestern Mason County in western West Virginia...

* Until 1045 AM EDT.

* At 448 AM EDT, Doppler radar indicated numerous showers producing 
  heavy rain across the warned area. Between 1 and 3 inches of rain 
  have fallen. Additional rainfall amounts of 1 to 2 inches are 
  possible in the warned area. 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...
  Athens, Wellston, Point Pleasant, Gallipolis, Pomeroy, Mcarthur, 
  Rio Grande, Albany, Rutland, Lake Hope State Park, Mason, 
  Middleport, Hamden, Zaleski, Vinton, Wilkesville, Cheshire, 
  Adamsville, Dyesville and Salem Center.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 3919 8258 3921 8259 3939 8232 3938 8231
      3938 8230 3938 8229 3939 8229 3940 8229
      3936 8206 3907 8198 3879 8220 3895 8255

FLASH FLOOD...RADAR INDICATED

$$

ARJ
2 follow-up statements
735 
WGUS71 KRLX 181223
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
823 AM EDT Wed Aug 18 2021

OHC009-053-079-105-163-WVC053-181445-
/O.CON.KRLX.FF.W.0090.000000T0000Z-210818T1445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Athens OH-Gallia OH-Jackson OH-Meigs OH-Vinton OH-Mason WV-
823 AM EDT Wed Aug 18 2021

...FLASH FLOOD WARNING REMAINS IN EFFECT UNTIL 1045 AM EDT THIS 
MORNING FOR SOUTHWESTERN ATHENS, NORTHEASTERN GALLIA, NORTHEASTERN 
JACKSON, NORTHWESTERN MEIGS, EASTERN VINTON AND NORTHWESTERN MASON 
COUNTIES...

At 823 AM EDT, Doppler radar indicated thunderstorms producing heavy 
rain across the warned area. Between 1 and 3 inches of rain have 
fallen. Additional rainfall amounts of 1 to 2 inches are possible in 
the warned area. 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...
  Athens, Wellston, Point Pleasant, Gallipolis, Pomeroy, Mcarthur, 
  Rio Grande, Albany, Rutland, Lake Hope State Park, Mason, 
  Middleport, Hamden, Zaleski, Vinton, Wilkesville, Cheshire, 
  Adamsville, Dyesville and Salem Center.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

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 3919 8258 3921 8259 3939 8232 3938 8231
      3938 8230 3938 8229 3939 8229 3940 8229
      3936 8206 3907 8198 3879 8220 3895 8255

FLASH FLOOD...RADAR INDICATED

$$

MEK
225 
WGUS71 KRLX 181441
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
1041 AM EDT Wed Aug 18 2021

OHC009-053-079-105-163-WVC053-181451-
/O.EXP.KRLX.FF.W.0090.000000T0000Z-210818T1445Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Athens OH-Gallia OH-Jackson OH-Meigs OH-Vinton OH-Mason WV-
1041 AM EDT Wed Aug 18 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 1045 AM EDT THIS MORNING FOR 
SOUTHWESTERN ATHENS, NORTHEASTERN GALLIA, NORTHEASTERN JACKSON, 
NORTHWESTERN MEIGS, EASTERN VINTON AND NORTHWESTERN MASON COUNTIES...

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

A Flash Flood Watch remains in effect until 1200 PM EDT for portions 
of northeast Kentucky, southeast Ohio and West Virginia.

LAT...LON 3919 8258 3921 8259 3939 8232 3938 8231
      3938 8230 3938 8229 3939 8229 3940 8229
      3936 8206 3907 8198 3879 8220 3895 8255

$$

MEK

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 18, 3:55 AM EDTFlash Flood WarningRLXGallia, Lawrence6 hr
Aug 18, 6:30 AM EDTFlash Flood WarningRLXAthens, Morgan, Perry6 hr
Aug 18, 8:02 AM EDTFlash Flood WarningRLXMorgan, Perry4 hr
Aug 18, 2:35 AM EDTFlash Flood WarningRLXLogan, Mingo3 hr
Aug 18, 4:37 AM EDTAreal Flood WarningRLXLincoln9 hr

Nearby

Flash Flood Warnings in Ohio, 2021Flash 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.