Alert archive / Ohio / Flash Flood Warnings in 2018

Flash Flood Warning 39, NWS Charleston, WV

July 2, 2018Athens County, Morgan County, Perry County, Ohio

NWS Charleston, WV issued this flash flood warning at Jul 2, 2018, 6:18 PM EDT for Athens County, Morgan County, Perry County, Ohio. 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
Jul 2, 2018, 6:18 PM EDT (22:18 UTC)
Expired
Jul 2, 2018, 9:15 PM EDT
In force
3 hr
Issued by
NWS Charleston, WV
Area
Storm-based polygon
Flood severity
None

Counties Athens County, OH, Morgan County, OH, Perry County, OH

The radar

The Charleston,WV radar (KRLX), 148 km from the middle of the area, began a volume at 22:17 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 10.3 hours before the alert went out and 146 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, Cncnati-Daytn, OH at 12:00Z on 2018-07-02Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1352 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, Cncnati-Daytn, OH at 12:00Z on 2018-07-02The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -4 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
1352 J/kg
Mixed-layer CIN
-39 J/kg
Mixed-layer LCL
872 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
-4 m²/s²
0-3 km storm-relative helicity
19 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

As transmitted.

159 
WGUS51 KRLX 022218
FFWRLX
OHC009-115-127-030115-
/O.NEW.KRLX.FF.W.0039.180702T2218Z-180703T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Charleston WV
618 PM EDT MON JUL 2 2018

The National Weather Service in Charleston West Virginia has issued a

* Flash Flood Warning for...
  Southern Perry County in southeastern Ohio...
  Morgan County in southeastern Ohio...
  Northwestern Athens County in southeastern Ohio...

* Until 915 PM EDT.

* At 618 PM EDT, Doppler radar indicated thunderstorms producing
  heavy rain across the warned area. Up to two inches of rain have
  already fallen. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Nelsonville, New Lexington, Glouster, McConnelsville, Shawnee,
  Crooksville, Chauncey, New Straitsville, Malta, Corning, Buchtel,
  Stockport, Jacksonville, Trimble, Bristol, Hemlock, Rendville, Burr
  Oak State Park, Hackney and Eagleport.

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 3977 8207 3976 8187 3967 8164 3965 8159
      3933 8218 3946 8228 3947 8228 3947 8217
      3955 8216 3956 8226 3959 8226 3960 8238
      3968 8237 3978 8208

$$

KMC
1 follow-up statement
486 
WGUS71 KRLX 030106
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
906 PM EDT MON JUL 2 2018

OHC009-115-127-030115-
/O.EXP.KRLX.FF.W.0039.000000T0000Z-180703T0115Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Perry OH-Morgan OH-Athens OH-
906 PM EDT MON JUL 2 2018

...THE FLASH FLOOD WARNING FOR SOUTHERN PERRY...MORGAN AND
NORTHWESTERN ATHENS COUNTIES WILL EXPIRE AT 915 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 3977 8207 3976 8187 3967 8164 3965 8159
      3933 8218 3946 8228 3947 8228 3947 8217
      3955 8216 3956 8226 3959 8226 3960 8238
      3968 8237 3978 8208

$$

KMC

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 1, 8:14 PM EDTSpecial Weather StatementRLXJackson31 min
Jul 2, 4:35 PM EDTSpecial Weather StatementRLXPerry40 min
Jul 2, 4:50 PM EDTFlash Flood WarningRLXPerry3 hr
Jul 2, 6:12 PM EDTSpecial Weather StatementRLXAthens, Morgan, Vinton63 min
Jul 2, 6:44 PM EDTSevere Thunderstorm WarningRLXGallia, Jackson, Lawrence61 min
Jul 2, 7:36 PM EDTFlash Flood WarningRLXGallia, Jackson, Vinton3 hr

Nearby

Flash 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.