Alert archive / Kentucky / Tornado Warnings in 2011

Tornado Warning 31, NWS Wilmington, OH

April 27, 20115 counties in Kentucky

NWS Wilmington, OH issued this tornado warning at Apr 27, 2011, 8:30 AM EDT for 5 counties in Kentucky. It was in force for 30 min. 2 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 27, 2011, 8:30 AM EDT (12:30 UTC)
Expired: Apr 27, 2011, 9:00 AM EDT
In force: 30 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon

Counties Boone County, KY, Campbell County, KY, Grant County, KY, Kenton County, KY, Pendleton County, KY

The radar

The Cincinnati radar (KILN), 103 km from the middle of the area, began a volume at 12:30 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 27, 8:35 AM EDT	TSTM WND DMG	3 S Crittenden, KY	ONE TREE DOWN ON A POWER LINE ON DIXIE HWY. TIME ESTIMATED.
Apr 27, 8:48 AM EDT	TSTM WND GST 65	Williamstown, KY

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, 0.5 hours before the alert went out and 105 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: 279 J/kg
Mixed-layer CIN: -56 J/kg
Mixed-layer LCL: 846 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 470 m²/s²
0-3 km storm-relative helicity: 503 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 4.9

Open this sounding in Storm Lab

The text

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

665 
WFUS51 KILN 271230
TORILN
KYC015-037-081-117-191-271300-
/O.NEW.KILN.TO.W.0031.110427T1230Z-110427T1300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
830 AM EDT WED APR 27 2011

THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A

* TORNADO WARNING FOR...
  BOONE COUNTY IN NORTHERN KENTUCKY...
  CAMPBELL COUNTY IN NORTHERN KENTUCKY...
  GRANT COUNTY IN NORTHERN KENTUCKY...
  KENTON COUNTY IN NORTHERN KENTUCKY...
  NORTHWESTERN PENDLETON COUNTY IN NORTHERN KENTUCKY...

* UNTIL 900 AM EDT.

* AT 826 AM EDT...RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF
  PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR TWIN
  BRIDGES......MOVING NORTHEAST AT 60 MPH. IN ADDITION TO THE
  TORNADO...THIS STORM IS CAPABLE OF PRODUCING DESTRUCTIVE STRAIGHT
  LINE WINDS.

* LOCATIONS IMPACTED INCLUDE...
  WILLIAMSTOWN...
  DRY RIDGE...
  CRITTENDEN...
  WALTON...
  BUTLER...

IN ADDITION...SHERMAN...WILLIAMSTOWN LAKE...NORTHCUTT...KNOXVILLE...
VERONA...BRACHT...GARDNERSVILLE AND PINER ARE NEAR THE PATH OF THIS
DANGEROUS THUNDERSTORM.

THIS INCLUDES THE FOLLOWING INTERSTATES...
I-71 BETWEEN MILE MARKERS 71 AND 77...
I-75 BETWEEN MILE MARKERS 155 AND 176...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

PLEASE REPORT TORNADOES...FUNNEL CLOUDS...STRONG WINDS OR HAIL TO THE
NATIONAL WEATHER SERVICE BY CALLING TOLL FREE...877-633-6772...WHEN
YOU CAN DO SO SAFELY.

&&

LAT...LON 3863 8478 3873 8479 3877 8475 3878 8466
      3881 8472 3896 8460 3891 8437 3874 8432
      3857 8468
TIME...MOT...LOC 1230Z 223DEG 53KT 3868 8467

$$

1 follow-up statement

259 
WWUS51 KILN 271237
SVSILN

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
837 AM EDT WED APR 27 2011

KYC015-037-081-117-191-271300-
/O.CON.KILN.TO.W.0031.000000T0000Z-110427T1300Z/
KENTON KY-PENDLETON KY-BOONE KY-CAMPBELL KY-GRANT KY-
837 AM EDT WED APR 27 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 AM EDT FOR
NORTHEASTERN GRANT...CAMPBELL...BOONE...NORTHWESTERN PENDLETON AND
KENTON COUNTIES...

AT 835 AM EDT...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR
SHERMAN...MOVING NORTHEAST AT 60 MPH.

LOCATIONS IMPACTED INCLUDE...
WALTON AND BUTLER.

IN ADDITION...BRACHT...GARDNERSVILLE...FISKBURG...PINER...
GREENWOOD...RICHWOOD...ATWOOD AND BANK LICK ARE NEAR THE PATH OF THIS
STORM.

THIS INCLUDES THE FOLLOWING INTERSTATES...
I-71 BETWEEN MILE MARKERS 71 AND 77...
I-75 BETWEEN MILE MARKERS 160 AND 176...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER. PROTECT YOURSELF
FROM FLYING DEBRIS.

PLEASE REPORT TORNADOES...FUNNEL CLOUDS...STRONG WINDS OR HAIL TO THE
NATIONAL WEATHER SERVICE BY CALLING TOLL FREE...877-633-6772...WHEN
YOU CAN DO SO SAFELY.

&&

LAT...LON 3877 8469 3878 8466 3881 8472 3896 8460
      3891 8437 3874 8432 3864 8454
TIME...MOT...LOC 1237Z 220DEG 53KT 3877 8461

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 12:44 AM EDT	Special Weather Statement	ILN	Carroll	46 min
Apr 27, 1:29 AM EDT	Special Weather Statement	ILN	Boone	46 min
Apr 27, 3:17 AM EDT	Areal Flood Advisory	ILN	Carroll, Gallatin, Owen	3 hr
Apr 27, 4:04 AM EDT	Areal Flood Advisory	ILN	Boone, Campbell, Kenton	3 hr
Apr 27, 6:24 AM EDT	Severe Thunderstorm Warning	ILN	Carroll, Gallatin, Owen	36 min
Apr 27, 6:32 AM EDT	Tornado Warning	ILN	Carroll, Gallatin	28 min
Apr 27, 6:52 AM EDT	Areal Flood Advisory	ILN	Boone, Carroll, Gallatin, Owen	3 hr
Apr 27, 8:05 AM EDT	Tornado Warning	ILN	Carroll, Gallatin, Grant, Owen	25 min
Apr 27, 8:17 AM EDT	Special Weather Statement	ILN	Boone, Campbell, Kenton, Pendleton	43 min
Apr 27, 8:23 AM EDT	Areal Flood Advisory	ILN	Boone, Campbell, Gallatin, Grant, Kenton, Owen and 1 more	3 hr
Apr 27, 9:00 AM EDT	Severe Thunderstorm Warning	ILN	Bracken, Campbell, Kenton, Pendleton, Robertson	45 min
Apr 27, 9:24 AM EDT	Severe Thunderstorm Warning	ILN	Bracken, Lewis, Mason, Robertson	51 min
Apr 27, 10:11 AM EDT	Areal Flood Advisory	ILN	Bracken, Mason, Robertson	3 hr
Apr 27, 10:28 AM EDT	Special Weather Statement	ILN	Lewis	62 min
Apr 27, 7:15 PM EDT	Special Weather Statement	ILN	Lewis	60 min
Apr 27, 7:38 PM EDT	Areal Flood Advisory	ILN	Lewis, Mason	6 hr
Apr 27, 7:53 PM EDT	Special Weather Statement	ILN	Bracken, Mason, Robertson	52 min

Nearby

Tornado Warnings in Kentucky, 2011 Every tornado warning in 2011 Tornadoes 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.