Alert archive / Kentucky / Severe Thunderstorm Watches in 2007
Severe Thunderstorm Watch 484
The Storm Prediction Center issued this severe thunderstorm watch at Jul 4, 2007, 2:00 PM CDT for 4 states. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jul 4, 2007, 2:00 PM CDT (19:00 UTC)
- Expired
- Jul 4, 2007, 9:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 162 counties
Alexander County, IL, Bond County, IL, Brown County, IL, Calhoun County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Edwards County, IL, Effingham County, IL, Fayette County, IL, Franklin County, IL, Gallatin County, IL, Greene County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jasper County, IL, Jefferson County, IL, Jersey County, IL, Johnson County, IL, Lawrence County, IL, Macon County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Massac County, IL, Monroe County, IL, Montgomery County, IL, Morgan County, IL, Moultrie County, IL, Perry County, IL, Pike County, IL, Pope County, IL, Pulaski County, IL, Randolph County, IL, Richland County, IL, Saint Clair County, IL, Saline County, IL, Sangamon County, IL, Scott County, IL, Shelby County, IL, Union County, IL, Wabash County, IL, Washington County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Clark County, IN, Crawford County, IN, Daviess County, IN, Dubois County, IN, Floyd County, IN, Gibson County, IN, Greene County, IN, Harrison County, IN, Jackson County, IN, Jefferson County, IN, Knox County, IN, Lawrence County, IN, Martin County, IN, Orange County, IN, Perry County, IN, Pike County, IN, Posey County, IN, Scott County, IN, Spencer County, IN, Sullivan County, IN, Vanderburgh County, IN, Warrick County, IN, Washington County, IN, Adair County, KY, Allen County, KY, Anderson County, KY, Barren County, KY, Bourbon County, KY, Boyle County, KY, Breckinridge County, KY, Bullitt County, KY, Butler County, KY, Caldwell County, KY, Casey County, KY, Clark County, KY, Clinton County, KY, Crittenden County, KY, Cumberland County, KY, Daviess County, KY, Edmonson County, KY, Fayette County, KY, Franklin County, KY, Garrard County, KY, Grayson County, KY, Green County, KY, Hancock County, KY, Hardin County, KY, Harrison County, KY, Hart County, KY, Henderson County, KY, Henry County, KY, Hopkins County, KY, Jefferson County, KY, Jessamine County, KY, Larue County, KY, Lincoln County, KY, Livingston County, KY, Logan County, KY, Madison County, KY, Marion County, KY, McLean County, KY, Meade County, KY, Mercer County, KY, Metcalfe County, KY, Monroe County, KY, Muhlenberg County, KY, Nelson County, KY, Nicholas County, KY, Ohio County, KY, Oldham County, KY, Russell County, KY, Scott County, KY, Shelby County, KY, Simpson County, KY, Spencer County, KY, Taylor County, KY, Trimble County, KY, Union County, KY, Warren County, KY, Washington County, KY, Webster County, KY, Woodford County, KY, Audrain County, MO, Bollinger County, MO, Boone County, MO, Callaway County, MO, Cape Girardeau County, MO, City of Saint Louis, MO, Cole County, MO, Crawford County, MO, Franklin County, MO, Gasconade County, MO, Iron County, MO, Jefferson County, MO, Lincoln County, MO, Madison County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Osage County, MO, Perry County, MO, Pike County, MO, Ralls County, MO, Reynolds County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Scott County, MO, Warren County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 114 km from the middle of the area, began a volume at 19:03 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
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 90%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 90%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
10 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 4, 3:12 PM CDT | Severe Thunderstorm Warning | PAH | White | 19 min |
| Jul 4, 3:36 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 39 min |
| Jul 4, 3:46 PM CDT | Severe Thunderstorm Warning | LMK | Washington | 29 min |
| Jul 4, 4:15 PM CDT | Severe Thunderstorm Warning | LMK | Scott | 30 min |
| Jul 4, 4:18 PM CDT | Severe Thunderstorm Warning | LMK | Hardin, Meade | 27 min |
| Jul 4, 4:31 PM CDT | Severe Thunderstorm Warning | PAH | Spencer, Warrick | 26 min |
| Jul 4, 4:37 PM CDT | Severe Thunderstorm Warning | LMK | Ohio | 23 min |
| Jul 4, 5:47 PM CDT | Severe Thunderstorm Warning | ILX | Effingham, Shelby | 43 min |
| Jul 4, 6:11 PM CDT | Severe Thunderstorm Warning | LSX | Saint Clair, Washington | 40 min |
| Jul 4, 7:07 PM CDT | Severe Thunderstorm Warning | PAH | Jackson | 23 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
Lincoln, IL (KILX), launched 12:00Z, 7.0 hours before the alert went out and 177 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
- 146 J/kg
- Mixed-layer CIN
- -131 J/kg
- Mixed-layer LCL
- 993 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 39 m²/s²
- 0-3 km storm-relative helicity
- 34 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 3, 10:24 PM CDT | Mesoscale Discussion | SPC | Carroll, Jo Daviess, Stephenson | 96 min |
| Jul 4, 12:59 AM CDT | Mesoscale Discussion | SPC | Henry, Knox, Marshall, Mercer, Peoria, Rock Island and 2 more | 3 hr |
| Jul 4, 12:27 PM CDT | Mesoscale Discussion | SPC | Bond, Clay, Clinton, Edwards, Fayette, Franklin and 24 more | 63 min |
| Jul 4, 5:14 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Clay, Clinton, Crawford, Cumberland and 29 more | 91 min |
| Jul 4, 10:24 AM CDT | Mesoscale Discussion | SPC | Clark, Crawford, Daviess, Dearborn, Dubois, Floyd and 17 more | 66 min |
| Jul 4, 12:41 PM CDT | Tornado Watch | SPC | Dearborn, Fayette, Franklin, Ohio, Ripley, Switzerland and 2 more | 7 hr |
| Jul 4, 3:13 PM CDT | Mesoscale Discussion | SPC | Dearborn, Fayette, Franklin, Ohio, Switzerland, Union and 1 more | 62 min |
| Jul 4, 2:37 PM CDT | Severe Thunderstorm Watch | SPC | Bates, Benton, Camden, Carroll, Cass, Cedar and 21 more | 7 hr |
Nearby
Severe Thunderstorm Watches in Kentucky, 2007Severe Thunderstorm Watches in Illinois, 2007Severe Thunderstorm Watches in Missouri, 2007Every severe thunderstorm watch in 2007
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.