Alert archive / Kentucky / Flash Flood Warnings in 2021

Flash Flood Warning 32, NWS Wilmington, OH

August 30, 2021Owen County, Kentucky

NWS Wilmington, OH issued this flash flood warning at Aug 30, 2021, 12:00 PM EDT for Owen County, Kentucky. 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: Aug 30, 2021, 12:00 PM EDT (16:00 UTC)
Expired: Aug 30, 2021, 2:30 PM EDT
In force: 3 hr
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Flood severity: None

County Owen County, KY

The radar

The Louisville radar (KLVX), 107 km from the middle of the area, began a volume at 16:03 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, 4.0 hours before the alert went out and 143 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: 185 J/kg
Mixed-layer CIN: -112 J/kg
Mixed-layer LCL: 1095 m above ground
0-6 km bulk shear: 23 kt
0-1 km storm-relative helicity: -24 m²/s²
0-3 km storm-relative helicity: 25 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

885 
WGUS51 KILN 301600
FFWILN
KYC187-301830-
/O.NEW.KILN.FF.W.0032.210830T1600Z-210830T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service Wilmington OH
1200 PM EDT Mon Aug 30 2021

The National Weather Service in Wilmington has issued a

* Flash Flood Warning for...
  Southern Owen County in northern Kentucky...

* Until 230 PM EDT.

* At 1200 PM EDT, radar indicated thunderstorms producing heavy rain 
  across the warned area. Between 1.5 and 2.5 inches of rain have 
  fallen. 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 may experience flash flooding include...
  Owenton, Monterey, Gratz, Elk Lake, Elmer Davis Lake, Beechwood 
  and Squiresville.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Move to higher ground now. Act quickly to protect your life.

To report flash flooding, go to our website at weather.gov/iln and 
submit your report via social media, when you can do so safely.

&&

LAT...LON 3854 8501 3856 8468 3853 8467 3849 8465
      3838 8471 3836 8479 3836 8485 3839 8488
      3842 8488 3843 8493 3846 8491 3846 8493
      3843 8494 3843 8496 3847 8495 3849 8499
      3852 8498 3852 8500 3850 8502 3851 8503

FLASH FLOOD...RADAR INDICATED

$$

Campbell

1 follow-up statement

607 
WGUS71 KILN 301820
FFSILN

Flash Flood Statement
National Weather Service Wilmington OH
220 PM EDT Mon Aug 30 2021

KYC187-301830-
/O.EXP.KILN.FF.W.0032.000000T0000Z-210830T1830Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Owen KY-
220 PM EDT Mon Aug 30 2021

...FLASH FLOOD WARNING WILL EXPIRE AT 230 PM EDT THIS AFTERNOON FOR 
SOUTHERN OWEN COUNTY...

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 400 AM EDT Tuesday for 
portions of Southeast Indiana, Northern Kentucky and Ohio.

LAT...LON 3854 8501 3856 8468 3853 8467 3849 8465
      3838 8471 3836 8479 3836 8485 3839 8488
      3842 8488 3843 8493 3846 8491 3846 8493
      3843 8494 3843 8496 3847 8495 3849 8499
      3852 8498 3852 8500 3850 8502 3851 8503

$$

Campbell

The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Aug 30, 3:38 AM EDT	Flash Flood Watch	ILN	Boone, Bracken, Campbell, Carroll, Gallatin, Grant and 6 more	48 hr
Aug 30, 10:13 AM EDT	Areal Flood Advisory	ILN	Carroll, Gallatin, Owen	3 hr
Aug 30, 11:33 AM EDT	Areal Flood Advisory	ILN	Owen	27 min

Nearby

Flash Flood Warnings in Kentucky, 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.