Alert archive / Kentucky / Flash Flood Warnings in 2012

Flash Flood Warning 21, NWS Wilmington, OH

July 8, 2012Bracken County, Pendleton County, Kentucky

NWS Wilmington, OH issued this flash flood warning at Jul 8, 2012, 4:17 PM EDT for Bracken County, Pendleton 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: Jul 8, 2012, 4:17 PM EDT (20:17 UTC)
Expired: Jul 8, 2012, 7:15 PM EDT
In force: 3 hr
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Flood severity: None

Counties Bracken County, KY, Pendleton County, KY

The radar

The Cincinnati radar (KILN), 87 km from the middle of the area, began a volume at 20:17 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, 8.3 hours before the alert went out and 89 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: 2132 J/kg
Mixed-layer CIN: -125 J/kg
Mixed-layer LCL: 1196 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 31 m²/s²
0-3 km storm-relative helicity: 72 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

828 
WGUS51 KILN 082017
FFWILN
KYC023-191-082315-
/O.NEW.KILN.FF.W.0021.120708T2017Z-120708T2315Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
417 PM EDT SUN JUL 8 2012

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  NORTHWESTERN BRACKEN COUNTY IN NORTHERN KENTUCKY...
  CENTRAL PENDLETON COUNTY IN NORTHERN KENTUCKY...

* UNTIL 715 PM EDT.

* AT 413 PM EDT...RADAR INDICATED THAT THUNDERSTORMS HAD PRODUCED   
HEAVY RAINFALL ACROSS THE WARNED AREA. RADAR ESTIMATED 2 TO 3 INCHES 
OF RAIN HAD FALLEN BETWEEN FALMOUTH AND LENOXBURG SINCE 3 PM. 

* HEAVY RAIN CONTINUES TO FALL ACROSS THE WARNED AREA WITH ANOTHER   
1 TO 3 INCHES POSSIBLE THROUGH 615 PM EDT. RUNOFF FROM THIS   
EXCESSIVE RAINFALL WILL CAUSE FLASH FLOODING TO OCCUR.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

DO NOT ALLOW CHILDREN TO PLAY NEAR STORM DRAINS OR FLOODED CREEKS AND
STREAMS. THEY CAN EASILY BE SWEPT AWAY OR PULLED UNDER BY FAST MOVING
WATER.

&&

LAT...LON 3860 8443 3877 8445 3881 8421 3880 8416
      3879 8413 3865 8412

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 8, 2:41 PM EDT	Severe Thunderstorm Warning	ILN	Bracken, Mason, Robertson	49 min
Jul 8, 3:30 PM EDT	Areal Flood Advisory	ILN	Bracken, Campbell, Lewis, Mason, Pendleton, Robertson	2 hr
Jul 8, 3:31 PM EDT	Special Weather Statement	ILN	Bracken	29 min
Jul 8, 3:43 PM EDT	Severe Thunderstorm Warning	ILN	Lewis	47 min
Jul 8, 3:56 PM EDT	Areal Flood Advisory	ILN	Lewis	2 hr
Jul 8, 4:29 PM EDT	Special Weather Statement	ILN	Grant	31 min
Jul 8, 4:31 PM EDT	Areal Flood Advisory	ILN	Campbell, Carroll, Gallatin, Grant, Owen, Pendleton	119 min
Jul 8, 4:38 PM EDT	Severe Thunderstorm Warning	ILN	Grant, Owen, Pendleton	37 min
Jul 8, 5:13 PM EDT	Severe Thunderstorm Warning	ILN	Boone, Gallatin, Grant, Owen	47 min
Jul 8, 5:45 PM EDT	Areal Flood Advisory	ILN	Boone, Campbell, Gallatin, Kenton, Pendleton	2 hr
Jul 8, 6:02 PM EDT	Special Weather Statement	ILN	Bracken, Campbell, Grant, Kenton, Pendleton	28 min
Jul 8, 7:15 PM EDT	Areal Flood Advisory	ILN	Bracken, Lewis, Mason, Robertson	2 hr
Jul 8, 7:42 PM EDT	Flash Flood Warning	ILN	Lewis	63 min

Nearby

Flash Flood Warnings in Kentucky, 2012 Every flash flood warning in 2012

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.