Alert archive / Kentucky / Tornado Warnings in 2011
Tornado Warning 11, NWS Wilmington, OH
NWS Wilmington, OH issued this tornado warning at Apr 20, 2011, 1:10 AM EDT for 9 counties in Kentucky. It was in force for 35 min. 1 report 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, 1:10 AM EDT (05:10 UTC)
- Expired
- Apr 20, 2011, 1:45 AM EDT
- In force
- 35 min
- Issued by
- NWS Wilmington, OH
- Area
- Storm-based polygon
Counties Bracken County, KY, Campbell County, KY, Carroll County, KY, Gallatin County, KY, Grant County, KY, Kenton County, KY, Owen County, KY, Pendleton County, KY, Robertson County, KY
The radar
The Cincinnati radar (KILN), 123 km from the middle of the area, began a volume at 05:11 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, 1:38 AM EDT | TSTM WND GST 60 | Williamstown, KY |
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, 5.2 hours before the alert went out and 125 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.
160
WFUS51 KILN 200510
TORILN
KYC023-037-041-077-081-117-187-191-201-200545-
/O.NEW.KILN.TO.W.0011.110420T0510Z-110420T0545Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE WILMINGTON OH
110 AM EDT WED APR 20 2011
THE NATIONAL WEATHER SERVICE IN WILMINGTON HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHWESTERN BRACKEN COUNTY IN NORTHERN KENTUCKY...
EXTREME SOUTHERN CAMPBELL COUNTY IN NORTHERN KENTUCKY...
CARROLL COUNTY IN NORTHERN KENTUCKY...
SOUTHERN GALLATIN COUNTY IN NORTHERN KENTUCKY...
GRANT COUNTY IN NORTHERN KENTUCKY...
EXTREME SOUTHERN KENTON COUNTY IN NORTHERN KENTUCKY...
OWEN COUNTY IN NORTHERN KENTUCKY...
PENDLETON COUNTY IN NORTHERN KENTUCKY...
ROBERTSON COUNTY IN NORTHERN KENTUCKY...
* UNTIL 145 AM EDT.
* AT 107 AM EDT...RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF
PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR
WORTHVILLE......MOVING EAST AT 60 MPH.
* LOCATIONS IMPACTED INCLUDE...
OWENTON...
DRY RIDGE...
WILLIAMSTOWN...
CRITTENDEN...
FALMOUTH...
BUTLER...
IN ADDITION...SQUIRESVILLE...WHEATLEY...CARSON...MONTEREY...
SANDERS...NEW LIBERTY...SPARTA AND BROMLEY ARE NEAR THE PATH OF THIS
DANGEROUS THUNDERSTORM.
THIS INCLUDES THE FOLLOWING INTERSTATES...
I-71 BETWEEN MILE MARKERS 45 AND 67...
I-75 BETWEEN MILE MARKERS 145 AND 167...
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.
A TORNADO WATCH REMAINS IN EFFECT UNTIL 500 AM EDT WEDNESDAY MORNING
FOR SOUTHEASTERN INDIANA AND NORTHEASTERN KENTUCKY AND SOUTHWESTERN
OHIO.
&&
LAT...LON 3842 8489 3842 8495 3847 8496 3849 8500
3851 8499 3851 8503 3856 8501 3859 8510
3870 8513 3878 8466 3886 8429 3852 8408
3850 8419 3855 8417 3856 8422 3858 8421
3856 8441 3849 8456 3842 8464 3837 8490
TIME...MOT...LOC 0510Z 255DEG 52KT 3857 8500
$$1 follow-up statement
350
WWUS51 KILN 200528
SVSILN
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE WILMINGTON OH
128 AM EDT WED APR 20 2011
KYC023-037-041-077-081-117-187-191-201-200545-
/O.CON.KILN.TO.W.0011.000000T0000Z-110420T0545Z/
KENTON KY-OWEN KY-PENDLETON KY-ROBERTSON KY-BRACKEN KY-CAMPBELL KY-
CARROLL KY-GALLATIN KY-GRANT KY-
128 AM EDT WED APR 20 2011
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 145 AM EDT FOR GRANT...
SOUTHERN GALLATIN...EXTREME EASTERN CARROLL...EXTREME SOUTHERN
CAMPBELL...SOUTHWESTERN BRACKEN...ROBERTSON...PENDLETON...OWEN AND
EXTREME SOUTHERN KENTON COUNTIES...
AT 127 AM EDT...RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM
CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR
NEW LIBERTY...MOVING EAST AT 70 MPH.
LOCATIONS IMPACTED INCLUDE...
DRY RIDGE...WILLIAMSTOWN...CRITTENDEN...FALMOUTH AND BUTLER.
IN ADDITION...BEECHWOOD...GLENCOE...EAGLE HILL...NEEDMORE...NATLEE...
HOLBROOK...TWIN BRIDGES AND NEW COLUMBUS ARE NEAR THE PATH OF THIS
STORM.
THIS INCLUDES THE FOLLOWING INTERSTATES...
I-71 BETWEEN MILE MARKERS 53 AND 64...
I-75 BETWEEN MILE MARKERS 145 AND 166...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.
PLEASE REPORT TORNADOES...FUNNEL CLOUDS...STRONG WINDS OR HAIL TO THE
NATIONAL WEATHER SERVICE BY CALLING TOLL FREE...877-633-6772...WHEN
YOU CAN DO SO SAFELY.
&&
LAT...LON 3839 8489 3840 8489 3842 8489 3842 8490
3859 8496 3871 8500 3878 8466 3886 8429
3852 8408 3850 8419 3855 8417 3856 8422
3858 8421 3856 8441 3849 8456 3842 8464
TIME...MOT...LOC 0528Z 253DEG 62KT 3862 8485
$$The office that day
Everything else NWS Wilmington, OH issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 20, 12:34 AM EDT | Severe Thunderstorm Warning | ILN | Boone, Campbell, Kenton | 41 min |
| Apr 20, 12:37 AM EDT | Severe Thunderstorm Warning | ILN | Boone, Campbell, Carroll, Gallatin, Grant, Kenton and 2 more | 38 min |
| Apr 20, 12:52 AM EDT | Tornado Warning | ILN | Boone | 23 min |
| Apr 20, 12:56 AM EDT | Tornado Warning | ILN | Boone, Campbell, Gallatin, Grant, Kenton, Pendleton | 34 min |
| Apr 20, 1:04 AM EDT | Flash Flood Warning | ILN | Boone, Campbell, Kenton | 6 hr |
| Apr 20, 1:11 AM EDT | Tornado Warning | ILN | Boone, Campbell, Kenton | 34 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 |
| Apr 20, 6:55 AM EDT | Areal Flood Advisory | ILN | Boone, Campbell, Kenton | 3 hr |
Nearby
Tornado Warnings in Kentucky, 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.