Alert archive / Ohio / Flash Flood Warnings in 2021

Flash Flood Warning 40, NWS Charleston, WV

June 11, 2021Gallia County, Jackson County, Ohio

NWS Charleston, WV issued this flash flood warning at Jun 11, 2021, 2:36 PM EDT for Gallia County, Jackson 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: Jun 11, 2021, 2:36 PM EDT (18:36 UTC)
Expired: Jun 11, 2021, 5:14 PM EDT
In force: 3 hr
Issued by: NWS Charleston, WV
Area: Storm-based polygon
Flood severity: None

Counties Gallia County, OH, Jackson County, OH

The radar

The Charleston,WV radar (KRLX), 77 km from the middle of the area, began a volume at 18:39 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, 6.6 hours before the alert went out and 145 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 459 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 803 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -36 m²/s²
0-3 km storm-relative helicity: -2 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

429 
WGUS51 KRLX 111836
FFWRLX
OHC053-079-112230-
/O.NEW.KRLX.FF.W.0040.210611T1836Z-210611T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Charleston WV
236 PM EDT Fri Jun 11 2021

The National Weather Service in Charleston has issued a

* Flash Flood Warning for...
  Central Gallia County in southeastern Ohio...
  Southeastern Jackson County in southeastern Ohio...

* Until 630 PM EDT.

* At 236 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 1.5 inches of 
  rain have fallen. The expected rainfall rate is 0.75 to 1 inch in 
  30 minutes. Additional rainfall amounts of 0.5 to 1 inch 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...
  Gallipolis, Rio Grande, Gallia, Adamsville, Gage and Centerpoint.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

Be aware of your surroundings and do not drive on flooded roads.

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 3888 8246 3889 8242 3888 8237 3884 8220
      3881 8220 3880 8222 3879 8222 3877 8222
      3877 8221 3875 8221 3876 8242 3882 8257

FLASH FLOOD...RADAR INDICATED
EXPECTED RAINFALL...0.75-1 INCH IN 30 MINUTES

$$

30

1 follow-up statement

795 
WGUS71 KRLX 112114
FFSRLX

Flash Flood Statement
National Weather Service Charleston WV
514 PM EDT Fri Jun 11 2021

OHC053-079-112124-
/O.CAN.KRLX.FF.W.0040.000000T0000Z-210611T2230Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Gallia OH-Jackson OH-
514 PM EDT Fri Jun 11 2021

...FLASH FLOOD WARNING IS CANCELLED FOR CENTRAL GALLIA AND 
SOUTHEASTERN JACKSON 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 AM EDT Saturday for 
portions of northeast Kentucky, southeast Ohio, southwest Virginia 
and West Virginia.

LAT...LON 3888 8246 3889 8242 3888 8237 3884 8220
      3881 8220 3880 8222 3879 8222 3877 8222
      3877 8221 3875 8221 3876 8242 3882 8257

$$

30

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 1:55 PM EDT	Special Weather Statement	RLX	Jackson	65 min
Jun 11, 3:02 PM EDT	Special Weather Statement	RLX	Lawrence	58 min
Jun 11, 4:10 PM EDT	Special Weather Statement	RLX	Washington	35 min
Jun 11, 4:15 PM EDT	Flash Flood Warning	RLX	Washington	2 hr

Nearby

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