Alert archive / Kentucky / Tornado Warnings in 2011
Tornado Warning 9, NWS Wilmington, OH
NWS Wilmington, OH issued this tornado warning at Apr 20, 2011, 12:56 AM EDT for Ohio County, Switzerland County, Indiana; 6 counties in Kentucky. It was in force for 34 min. 6 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 20, 2011, 12:56 AM EDT (04:56 UTC)
- Expired
- Apr 20, 2011, 1:30 AM EDT
- In force
- 34 min
- Issued by
- NWS Wilmington, OH
- Area
- Storm-based polygon
Counties Ohio County, IN, Switzerland County, IN, Boone County, KY, Campbell County, KY, Gallatin County, KY, Grant County, KY, Kenton County, KY, Pendleton County, KY
The radar
The Cincinnati radar (KILN), 113 km from the middle of the area, began a volume at 04:58 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 20, 1:03 AM EDT | TSTM WND DMG | 4 N Warsaw, IN | DAMAGE SURVEY CONCLUDED STRAIGHT LINE WINDS OF 80 MPH THAT EXTENDED 0.75 MILE. MOBILE HOME COLLAPSED ON BRYANTS CREEK ROAD. |
| Apr 20, 1:04 AM EDT | TSTM WND DMG | 5 N Warsaw, IN | AT LEAST 3 BARNS DESTROYED AND 2 HOMES WITH ROOFS BLOWN OFF NEAR SR 250 AND ANTIOCH RD. RELAYED BY WLWT. |
| Apr 20, 1:04 AM EDT | TORNADO | 5 N Warsaw, IN | SURVEY CONFIRMED EF1 TORNADO. 2 MILE PATH LENGTH BEGAN NEAR SR 250 AND ANTIOCH ROAD AND EXTENDED NORTHEAST TOWARD NORTH BRANCH ROAD. THREE BARNS DESTROYED AND TWO ROOFS BLOWN OFF. PATH WIDTH OF 200 FEET. |
| Apr 20, 1:07 AM EDT | TSTM WND DMG | Rising Sun, IN | ROOF BLOWN OFF GARAGE...BARN KNOCKED DOWN AND DESTROYED...AND TREE SNAPPED. RELAYED BY WLWT. |
| Apr 20, 1:15 AM EDT | TSTM WND DMG | 4 Ssw Elsmere, KY | DAMAGE SURVEY INDICATED STRAIGHT LINE WINDS OF 80 TO 120 MPH. STRUCTURAL DAMAGE TO I-75 NB REST AREA...SEMI TRUCKS BLOWN OVER...3 MOBILE HOMES MOVED OFF FOUNDATION...ROOF DAMAGE...BARN BLOWN OFF FOUNDATION AND NUMEROUS TREES DOWN. |
| Apr 20, 1:15 AM EDT | TORNADO | 4 Ssw Elsmere, KY | POSSIBLE TORNADO DAMAGE PATH INCLUDES SEVERE STRUCTURAL DAMAGE TO I-75 NB REST AREA...SEMI TRUCKS BLOWN OVER...4 MOBILE HOMES FLIPPED OFF FOUNDATION...ROOF DAMAGE...BARN BLOWN OFF FOUNDATION AND NUMEROUS TREES DOWN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 19, 10:13 PM EDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Cncnati-Daytn, OH (KILN), launched 00:00Z, 4.9 hours before the alert went out and 115 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.
- Mixed-layer CAPE
- 1686 J/kg
- Mixed-layer CIN
- -39 J/kg
- Mixed-layer LCL
- 1003 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 387 m²/s²
- 0-3 km storm-relative helicity
- 474 m²/s²
- Significant tornado parameter
- 4.3
- Supercell composite
- 18.7
The text
As transmitted, in the capitals the NWS used until 2016.
448
WFUS51 KILN 200456
TORILN
INC115-155-KYC015-037-077-081-117-191-200530-
/O.NEW.KILN.TO.W.0009.110420T0456Z-110420T0530Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
1256 AM EDT WED APR 20 2011
THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A
* TORNADO WARNING FOR...
BOONE COUNTY IN NORTHERN KENTUCKY...
CAMPBELL COUNTY IN NORTHERN KENTUCKY...
GALLATIN COUNTY IN NORTHERN KENTUCKY...
NORTHERN GRANT COUNTY IN NORTHERN KENTUCKY...
KENTON COUNTY IN NORTHERN KENTUCKY...
CENTRAL PENDLETON COUNTY IN NORTHERN KENTUCKY...
OHIO COUNTY IN SOUTHEAST INDIANA...
SWITZERLAND COUNTY IN SOUTHEAST INDIANA...
* UNTIL 130 AM EDT.
* AT 1255 AM EDT...RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF
PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR VEVAY...
...MOVING EAST AT 65 MPH. IN ADDITION TO THE TORNADO...THIS STORM
IS CAPABLE OF PRODUCING DESTRUCTIVE STRAIGHT LINE WINDS.
* LOCATIONS IMPACTED INCLUDE...
WARSAW...
RISING SUN...
UNION...
CRITTENDEN...
WALTON...
INDEPENDENCE...
BUTLER...
IN ADDITION...CENTER SQUARE...MARKLAND...ALLENSVILLE...US ROUTE 42 AT
STATE ROUTE 184...EAST ENTERPRISE...ETHRIDGE...ABERDEEN AND FLORENCE
ARE NEAR THE PATH OF THIS DANGEROUS THUNDERSTORM.
THIS INCLUDES THE FOLLOWING INTERSTATES...
I-71 BETWEEN MILE MARKERS 60 AND 77 IN KENTUCKY...
I-75 BETWEEN MILE MARKERS 164 AND 180 IN KENTUCKY...
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.
TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.
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.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 AM EDT WEDNESDAY MORNING
FOR SOUTHEASTERN INDIANA AND NORTHEASTERN KENTUCKY AND SOUTHWESTERN
OHIO.
&&
LAT...LON 3900 8445 3877 8433 3870 8498 3876 8503
3869 8516 3881 8520 3888 8521 3891 8521
TIME...MOT...LOC 0456Z 256DEG 55KT 3878 8505
$$1 follow-up statement
495
WWUS51 KILN 200506
SVSILN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
106 AM EDT WED APR 20 2011
INC115-155-KYC015-037-077-081-117-191-200530-
/O.CON.KILN.TO.W.0009.000000T0000Z-110420T0530Z/
SWITZERLAND IN-OHIO IN-KENTON KY-PENDLETON KY-BOONE KY-CAMPBELL KY-
GALLATIN KY-GRANT KY-
106 AM EDT WED APR 20 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 130 AM EDT FOR NORTHERN
GRANT...GALLATIN...CAMPBELL...BOONE...NORTHWESTERN PENDLETON...
KENTON...OHIO AND SWITZERLAND COUNTIES...
AT 103 AM EDT...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR
FLORENCE...MOVING EAST AT 65 MPH. IN ADDITION TO THE TORNADO...THIS
STORM IS CAPABLE OF PRODUCING DESTRUCTIVE STRAIGHT LINE WINDS.
LOCATIONS IMPACTED INCLUDE...
RISING SUN...UNION...CRITTENDEN...WALTON...INDEPENDENCE...BUTLER AND
CLARYVILLE.
IN ADDITION...PATRIOT...STEELE BOTTOM...RABBIT HASH...NAPOLEON...
ELLISTON...US ROUTES 42 AND 127 AT STATE ROUTE 562...BIG BONE AND
RYLE ARE NEAR THE PATH OF THIS STORM.
THIS INCLUDES THE FOLLOWING INTERSTATES...
I-71 BETWEEN MILE MARKERS 60 AND 77 IN KENTUCKY...
I-75 BETWEEN MILE MARKERS 164 AND 180 IN KENTUCKY...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER. PROTECT YOURSELF
FROM FLYING DEBRIS.
TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.
PLEASE REPORT TORNADOES...FUNNEL CLOUDS...STRONG WINDS OR HAIL TO THE
NATIONAL WEATHER SERVICE BY CALLING TOLL FREE...877-633-6772...WHEN
YOU CAN DO SO SAFELY.
&&
LAT...LON 3900 8445 3877 8433 3870 8498 3876 8503
3869 8516 3881 8520 3888 8521 3891 8521
TIME...MOT...LOC 0506Z 256DEG 55KT 3882 8486
$$The office that day
Everything else NWS Wilmington, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 19, 10:53 PM EDT | Severe Thunderstorm Warning | ILN | Fayette, Union, Wayne | 67 min |
| Apr 19, 11:42 PM EDT | Flash Flood Warning | ILN | Fayette, Union, Wayne | 6 hr |
| Apr 19, 11:56 PM EDT | Severe Thunderstorm Warning | ILN | Fayette, Union, Wayne | 49 min |
| Apr 20, 12:34 AM EDT | Severe Thunderstorm Warning | ILN | Dearborn, Franklin, Ohio, Ripley, Switzerland | 41 min |
| Apr 20, 12:37 AM EDT | Severe Thunderstorm Warning | ILN | Ohio, Ripley, Switzerland | 38 min |
| Apr 20, 12:39 AM EDT | Severe Thunderstorm Warning | ILN | Fayette, Union, Wayne | 51 min |
| Apr 20, 12:47 AM EDT | Tornado Warning | ILN | Franklin | 28 min |
| Apr 20, 12:52 AM EDT | Tornado Warning | ILN | Dearborn, Ripley | 23 min |
| Apr 20, 1:04 AM EDT | Flash Flood Warning | ILN | Dearborn, Franklin, Ripley | 6 hr |
| Apr 20, 1:09 AM EDT | Tornado Warning | ILN | Franklin | 36 min |
| Apr 20, 1:11 AM EDT | Tornado Warning | ILN | Dearborn, Ohio | 34 min |
| Apr 20, 5:11 AM EDT | River Flood Warning | ILN | Fayette, Franklin | 7 hr |
| Apr 20, 5:46 AM EDT | Areal Flood Advisory | ILN | Fayette, Union, Wayne | 3 hr |
| Apr 20, 6:55 AM EDT | Areal Flood Advisory | ILN | Dearborn, Franklin, Ripley | 3 hr |
| Apr 20, 3:46 PM EDT | River Flood Advisory | ILN | Dearborn, Franklin | 11 hr |
| Apr 20, 1:10 AM EDT | Tornado Warning | ILN | Bracken, Campbell, Carroll, Gallatin, Grant, Kenton and 3 more | 35 min |
| Apr 20, 1:24 AM EDT | Tornado Warning | ILN | Boone, Campbell, Kenton | 36 min |
| Apr 20, 1:37 AM EDT | Tornado Warning | ILN | Campbell, Kenton | 38 min |
| Apr 20, 1:41 AM EDT | Tornado Warning | ILN | Bracken, Grant, Pendleton, Robertson | 34 min |
| Apr 20, 1:56 AM EDT | Severe Thunderstorm Warning | ILN | Bracken, Lewis, Mason, Pendleton, Robertson | 49 min |
| Apr 20, 2:02 AM EDT | Tornado Warning | ILN | Bracken, Mason, Pendleton | 28 min |
| Apr 20, 2:34 AM EDT | Severe Thunderstorm Warning | ILN | Lewis, Mason | 41 min |
Nearby
Tornado Warnings in Kentucky, 2011Tornado Warnings in Indiana, 2011Every tornado warning in 2011Tornadoes 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.