Alert archive / Kentucky / Tornado Watches in 2009
Tornado Watch 117
The Storm Prediction Center issued this tornado watch at Apr 5, 2009, 11:44 AM CDT for 5 states. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 5, 2009, 11:44 AM CDT (16:44 UTC)
- Expired
- Apr 5, 2009, 6:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 70 kt
All 97 counties
Alexander County, IL, Edwards County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Johnson County, IL, Lawrence County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Saline County, IL, Union County, IL, Wabash County, IL, White County, IL, Williamson County, IL, Bartholomew County, IN, Brown County, IN, Clark County, IN, Crawford County, IN, Daviess County, IN, Dearborn County, IN, Decatur County, IN, Dubois County, IN, Floyd County, IN, Franklin County, IN, Gibson County, IN, Greene County, IN, Harrison County, IN, Jackson County, IN, Jefferson County, IN, Jennings County, IN, Knox County, IN, Lawrence County, IN, Martin County, IN, Monroe County, IN, Ohio County, IN, Orange County, IN, Perry County, IN, Pike County, IN, Posey County, IN, Ripley County, IN, Scott County, IN, Spencer County, IN, Switzerland County, IN, Vanderburgh County, IN, Warrick County, IN, Washington County, IN, Allen County, KY, Ballard County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Carroll County, KY, Christian County, KY, Crittenden County, KY, Daviess County, KY, Edmonson County, KY, Fulton County, KY, Graves County, KY, Grayson County, KY, Hancock County, KY, Hardin County, KY, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Jefferson County, KY, Livingston County, KY, Logan County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, McLean County, KY, Meade County, KY, Muhlenberg County, KY, Ohio County, KY, Oldham County, KY, Simpson County, KY, Todd County, KY, Trigg County, KY, Trimble County, KY, Union County, KY, Warren County, KY, Webster County, KY, Mississippi County, MO, Cheatham County, TN, Henry County, TN, Houston County, TN, Lake County, TN, Montgomery County, TN, Obion County, TN, Robertson County, TN, Stewart County, TN, Sumner County, TN, Weakley County, TN
The radar
The Evansville,IN radar (KVWX), 32 km from the middle of the area, began a volume at 16:47 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 SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 40%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 70%
- One or more gusts of 65 knots or more
- 40%
- Ten or more severe hail reports
- 60%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
16 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 5, 12:15 PM CDT | Severe Thunderstorm Warning | PAH | Union | 20 min |
| Apr 5, 12:23 PM CDT | Severe Thunderstorm Warning | PAH | Fulton, Hickman | 37 min |
| Apr 5, 12:54 PM CDT | Tornado Warning | IND | Daviess, Greene, Knox | 37 min |
| Apr 5, 3:53 PM CDT | Severe Thunderstorm Warning | PAH | Caldwell, Crittenden, Livingston, Lyon, Marshall | 37 min |
| Apr 5, 4:23 PM CDT | Tornado Warning | ILN | Fayette, Franklin, Union, Wayne | 52 min |
| Apr 5, 4:49 PM CDT | Severe Thunderstorm Warning | LMK | Crawford, Floyd, Harrison | 26 min |
| Apr 5, 5:08 PM CDT | Severe Thunderstorm Warning | LMK | Clark, Floyd | 37 min |
| Apr 5, 5:10 PM CDT | Severe Thunderstorm Warning | PAH | Christian, Hopkins, Muhlenberg, Todd, Trigg | 35 min |
| Apr 5, 5:17 PM CDT | Severe Thunderstorm Warning | LMK | Logan, Simpson | 28 min |
| Apr 5, 5:35 PM CDT | Severe Thunderstorm Warning | LMK | Harrison, Perry | 25 min |
| Apr 5, 5:41 PM CDT | Severe Thunderstorm Warning | LMK | Breckinridge, Butler, Grayson, Hancock, Logan, Ohio and 1 more | 34 min |
| Apr 5, 5:43 PM CDT | Tornado Warning | ILN | Franklin, Ripley | 25 min |
| Apr 5, 5:43 PM CDT | Tornado Warning | IND | Decatur | 18 min |
| Apr 5, 5:44 PM CDT | Severe Thunderstorm Warning | PAH | Christian, Muhlenberg, Todd | 31 min |
| Apr 5, 5:47 PM CDT | Severe Thunderstorm Warning | OHX | Cheatham, Dickson, Houston, Humphreys, Montgomery, Stewart | 28 min |
| Apr 5, 5:59 PM CDT | Severe Thunderstorm Warning | LMK | Crawford, Harrison, Perry | 31 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Nashville Metro, TN (KBNA), launched 12:00Z, 4.7 hours before the alert went out and 227 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1419 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 140 m²/s²
- 0-3 km storm-relative helicity
- 270 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 5, 10:50 AM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Bureau, Cass, Champaign, Christian and 67 more | 115 min |
| Apr 5, 2:02 PM CDT | Mesoscale Discussion | SPC | Edwards, Gallatin, Hardin, Johnson, Lawrence, Massac and 4 more | 88 min |
| Apr 5, 5:10 PM CDT | Mesoscale Discussion | SPC | Clark, Dearborn, Floyd, Franklin, Harrison, Jefferson and 6 more | 65 min |
| Apr 5, 5:37 PM CDT | Tornado Watch | SPC | Bartholomew, Clark, Crawford, Dearborn, Decatur, Fayette and 16 more | 5 hr |
| Apr 5, 6:19 PM CDT | Mesoscale Discussion | SPC | Bedford, Cannon, Coffee, DeKalb, Franklin, Giles and 14 more | 86 min |
Nearby
Tornado Watches in Kentucky, 2009Tornado Watches in Indiana, 2009Tornado Watches in Illinois, 2009Every tornado watch in 2009
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.