Alert archive / Kentucky / Flash Flood Warnings in 2011

Flash Flood Warning 4, NWS Wilmington, OH

April 19, 2011Ohio County, Switzerland County, Indiana; 8 counties in Kentucky; Clermont County, Ohio

NWS Wilmington, OH issued this flash flood warning at Apr 19, 2011, 9:08 AM EDT for Ohio County, Switzerland County, Indiana; 8 counties in Kentucky; Clermont County, Ohio. It was in force for 3 hr. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 19, 2011, 9:08 AM EDT (13:08 UTC)
Expired: Apr 19, 2011, 12:00 PM EDT
In force: 3 hr
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Flood severity: None

Counties Ohio County, IN, Switzerland County, IN, Boone County, KY, Bracken County, KY, Campbell County, KY, Gallatin County, KY, Grant County, KY, Kenton County, KY, Owen County, KY, Pendleton County, KY, Clermont County, OH

The radar

The Cincinnati radar (KILN), 89 km from the middle of the area, began a volume at 13:09 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.

What was reported inside it

Time	Report	Where	Remark
Apr 19, 9:31 AM EDT	FLASH FLOOD	3 W Walton, KY	MULTIPLE INTERSECTIONS IMPASSIBLE INCLUDING ALONG WALTON RD...GUNPOWER...BIG BONE...AND BEAVER
Apr 19, 10:10 AM EDT	FLOOD	New Richmond, OH	STREET FLOODING ONGOING.
Apr 19, 10:40 AM EDT	FLASH FLOOD	4 Sse Union, KY	ESTIMATED 7 TO 8 INCHES OF RUSHING WATER OVER RICHWOOD RD ABOUT 1 MILE SW OF I-75.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Cncnati-Daytn, OH (KILN), launched 12:00Z, 1.1 hours before the alert went out and 91 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 554 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 491 m²/s²
0-3 km storm-relative helicity: 609 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 2.1

Open this sounding in Storm Lab

The text

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

451 
WGUS51 KILN 191308
FFWILN
INC115-155-KYC015-023-037-077-081-117-187-191-OHC025-191600-
/O.NEW.KILN.FF.W.0004.110419T1308Z-110419T1600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
908 AM EDT TUE APR 19 2011

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* FLASH FLOOD WARNING FOR...
  BOONE COUNTY IN NORTHERN KENTUCKY...
  NORTHWESTERN BRACKEN COUNTY IN NORTHERN KENTUCKY...
  CAMPBELL COUNTY IN NORTHERN KENTUCKY...
  EASTERN GALLATIN COUNTY IN NORTHERN KENTUCKY...
  NORTHERN GRANT COUNTY IN NORTHERN KENTUCKY...
  KENTON COUNTY IN NORTHERN KENTUCKY...
  EXTREME NORTHERN OWEN COUNTY IN NORTHERN KENTUCKY...
  NORTHERN PENDLETON COUNTY IN NORTHERN KENTUCKY...
  OHIO COUNTY IN SOUTHEAST INDIANA...
  EXTREME EASTERN SWITZERLAND COUNTY IN SOUTHEAST INDIANA...
  SOUTHERN CLERMONT COUNTY IN SOUTHWEST OHIO...

* UNTIL NOON EDT.

* AT 906 AM EDT...RADAR INDICATED THAT THUNDERSTORMS HAD PRODUCED   
HEAVY RAINFALL ACROSS THE WARNED AREA. RADAR ESTIMATED 1 TO 3 
INCHES OF RAIN HAD FALLEN ACROSS NORTHERN SWITZERLAND COUNTY 
EASTWARD INTO BOONE COUNTY. 

* HEAVY RAIN CONTINUES TO FALL ACROSS THE WARNED AREA WITH ANOTHER   
1 TO 2 INCHES POSSIBLE THROUGH NOON EDT. RUNOFF FROM THIS   
EXCESSIVE RAINFALL COULD CAUSE FLASH FLOODING TO OCCUR.

SOME LOCATIONS THAT WILL EXPERIENCE FLOODING INCLUDE...ALEXANDRIA...
CLARYVILLE...EDGEWOOD...ELSMERE...ERLANGER...FALMOUTH...FLORENCE...
INDEPENDENCE...OAKBROOK...WALTON...BETHEL AND BROOKSVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

ACT QUICKLY TO PROTECT YOUR LIFE IF YOU ARE IN A LOW LYING AREA...
ALONG A CREEK...STREAM OR IN AN AREA EXPERIENCING FLOODING. MOVE TO
HIGHER GROUND IMMEDIATELY.

NEVER DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. ONLY A FEW INCHES
OF RAPIDLY FLOWING WATER CAN QUICKLY CARRY AWAY YOUR VEHICLE. FIND AN
ALTERNATE ROUTE OR WAIT UNTIL THE WATER RECEDES.

&&

LAT...LON 3866 8484 3890 8485 3891 8488 3894 8485
      3901 8485 3901 8403 3881 8404 3881 8405
      3866 8405

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 19, 1:57 AM EDT	Special Weather Statement	ILN	Ohio	63 min
Apr 19, 6:12 AM EDT	Areal Flood Warning	ILN	Dearborn, Ohio, Ripley, Switzerland	3 hr
Apr 19, 6:56 AM EDT	Flash Flood Warning	ILN	Dearborn, Ohio, Ripley, Switzerland	5 hr
Apr 19, 12:01 PM EDT	Special Weather Statement	ILN	Wayne	44 min
Apr 19, 12:57 PM EDT	Areal Flood Advisory	ILN	Fayette, Union, Wayne	11 hr
Apr 19, 2:42 PM EDT	River Flood Advisory	ILN	Dearborn, Ohio	49 hr
Apr 19, 3:36 PM EDT	River Flood Advisory	ILN	Dearborn, Franklin	28 hr
Apr 19, 3:54 PM EDT	Flood Watch	ILN	Dearborn, Fayette, Franklin, Ohio, Ripley, Switzerland and 2 more	17 hr
Apr 19, 1:42 AM EDT	Special Weather Statement	ILN	Carroll, Gallatin	63 min
Apr 19, 2:13 AM EDT	Special Weather Statement	ILN	Campbell, Kenton	62 min
Apr 19, 2:21 AM EDT	Severe Thunderstorm Warning	ILN	Boone, Campbell, Gallatin, Grant, Kenton, Pendleton	39 min
Apr 19, 2:54 AM EDT	Severe Thunderstorm Warning	ILN	Campbell	39 min
Apr 19, 3:45 AM EDT	Special Weather Statement	ILN	Campbell	60 min
Apr 19, 4:20 AM EDT	Areal Flood Warning	ILN	Boone, Campbell, Kenton	7 hr
Apr 19, 3:32 AM EDT	Severe Thunderstorm Warning	ILN	Brown, Clinton, Highland	23 min
Apr 19, 4:11 AM EDT	Special Weather Statement	ILN	Brown	64 min
Apr 19, 4:46 AM EDT	Special Weather Statement	ILN	Highland	59 min
Apr 19, 7:12 AM EDT	Areal Flood Advisory	ILN	Butler, Clinton, Greene, Montgomery, Preble, Warren	3 hr
Apr 19, 9:20 AM EDT	Special Weather Statement	ILN	Brown	55 min
Apr 19, 9:27 AM EDT	Special Weather Statement	ILN	Highland	63 min
Apr 19, 11:14 AM EDT	Special Weather Statement	ILN	Clinton, Warren	61 min
Apr 19, 11:40 AM EDT	Areal Flood Warning	ILN	Brown, Butler, Clermont, Clinton, Hamilton, Highland and 1 more	3 hr
Apr 19, 11:47 AM EDT	Special Weather Statement	ILN	Greene, Montgomery, Preble	58 min
Apr 19, 11:50 AM EDT	Areal Flood Advisory	ILN	Pike, Ross	3 hr
Apr 19, 12:22 PM EDT	River Flood Warning	ILN	Clermont, Hamilton, Warren	9 hr
Apr 19, 12:22 PM EDT	River Flood Warning	ILN	Clermont, Hamilton	9 hr
Apr 19, 1:45 PM EDT	Special Weather Statement	ILN	Pickaway	60 min
Apr 19, 2:14 PM EDT	Special Weather Statement	ILN	Fairfield	31 min
Apr 19, 2:19 PM EDT	River Flood Warning	ILN	Hamilton	5 days
Apr 19, 2:30 PM EDT	Areal Flood Advisory	ILN	Fairfield, Fayette, Franklin, Hocking, Licking, Madison and 2 more	6 hr
Apr 19, 4:11 PM EDT	River Flood Warning	ILN	Hocking	48 hr
Apr 19, 5:51 PM EDT	Areal Flood Warning	ILN	Warren	52 hr
Apr 19, 6:39 PM EDT	River Flood Warning	ILN	Pickaway	9 days
Apr 19, 6:39 PM EDT	River Flood Warning	ILN	Pike, Scioto	11 days
Apr 19, 6:57 PM EDT	River Flood Warning	ILN	Franklin, Madison, Pickaway	10 hr
Apr 19, 7:20 PM EDT	River Flood Warning	ILN	Miami, Shelby	2 hr
Apr 19, 7:22 PM EDT	River Flood Warning	ILN	Butler, Montgomery, Warren	3 hr

Nearby

Flash Flood Warnings in Kentucky, 2011 Flash Flood Warnings in Indiana, 2011 Flash Flood Warnings in Ohio, 2011 Every flash flood warning in 2011

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.