Alert archive / Ohio / Flash Flood Warnings in 2021

Flash Flood Warning 44, NWS Charleston, WV

June 11, 2021Washington County, Ohio

NWS Charleston, WV issued this flash flood warning at Jun 11, 2021, 4:15 PM EDT for Washington County, Ohio. It was in force for 2 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, 4:15 PM EDT (20:15 UTC)
Expired: Jun 11, 2021, 6:36 PM EDT
In force: 2 hr
Issued by: NWS Charleston, WV
Area: Storm-based polygon
Flood severity: None

County Washington County, OH

The radar

The Charleston,WV radar (KRLX), 134 km from the middle of the area, began a volume at 20:16 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 (KPIT), launched 12:00Z, 8.3 hours before the alert went out and 159 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: 89 J/kg
Mixed-layer CIN: -19 J/kg
Mixed-layer LCL: 609 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 31 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

As transmitted.

095 
WGUS51 KRLX 112015
FFWRLX
OHC167-120000-
/O.NEW.KRLX.FF.W.0044.210611T2015Z-210612T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

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

The National Weather Service in Charleston has issued a

* Flash Flood Warning for...
  North Central Washington County in southeastern Ohio...

* Until 800 PM EDT.

* At 415 PM EDT, Doppler radar indicated thunderstorms producing 
  heavy rain across the warned area. Between 1 and 2 inches of rain 
  have fallen. 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...
  Lowell and Devola.

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 3956 8159 3956 8142 3942 8151 3944 8163

FLASH FLOOD...RADAR INDICATED

$$

JZ

1 follow-up statement

643 
WGUS71 KRLX 112236
FFSRLX

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

OHC167-112246-
/O.CAN.KRLX.FF.W.0044.000000T0000Z-210612T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Washington OH-
636 PM EDT Fri Jun 11 2021

...FLASH FLOOD WARNING IS CANCELLED FOR NORTH CENTRAL WASHINGTON 
COUNTY...

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

LAT...LON 3956 8159 3956 8142 3942 8151 3944 8163

$$

JZ

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, 2:36 PM EDT	Flash Flood Warning	RLX	Gallia, Jackson	3 hr
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

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.