Alert archive / Missouri / Tornado Watches in 2006
Tornado Watch 199
The Storm Prediction Center issued this tornado watch at Apr 18, 2006, 3:38 PM CDT for 52 counties in Missouri. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 18, 2006, 3:38 PM CDT (20:38 UTC)
- Expired
- Apr 18, 2006, 11:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
All 52 counties
Adair County, MO, Audrain County, MO, Benton County, MO, Boone County, MO, Caldwell County, MO, Callaway County, MO, Camden County, MO, Carroll County, MO, Cedar County, MO, Chariton County, MO, Clinton County, MO, Cole County, MO, Cooper County, MO, Crawford County, MO, Dallas County, MO, Daviess County, MO, DeKalb County, MO, Dent County, MO, Gasconade County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Henry County, MO, Hickory County, MO, Howard County, MO, Johnson County, MO, Knox County, MO, Laclede County, MO, Lafayette County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Maries County, MO, Mercer County, MO, Miller County, MO, Moniteau County, MO, Monroe County, MO, Morgan County, MO, Osage County, MO, Pettis County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, Putnam County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Schuyler County, MO, Shelby County, MO, St. Clair County, MO, Sullivan County, MO, Worth County, MO
The radar
The Pleasant Hill radar (KEAX), 97 km from the middle of the area, began a volume at 20:37 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.
Warnings issued inside it
25 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 18, 6:14 PM CDT | Severe Thunderstorm Warning | EAX | Daviess, Grundy, Livingston | 46 min |
| Apr 18, 6:25 PM CDT | Severe Thunderstorm Warning | EAX | Harrison, Mercer | 50 min |
| Apr 18, 6:46 PM CDT | Severe Thunderstorm Warning | EAX | Daviess, Grundy, Livingston | 44 min |
| Apr 18, 6:54 PM CDT | Severe Thunderstorm Warning | EAX | Carroll, Chariton, Linn, Livingston | 51 min |
| Apr 18, 7:09 PM CDT | Tornado Warning | EAX | Livingston | 36 min |
| Apr 18, 7:13 PM CDT | Severe Thunderstorm Warning | EAX | Grundy, Harrison, Mercer, Putnam | 47 min |
| Apr 18, 7:28 PM CDT | Severe Thunderstorm Warning | EAX | Carroll, Chariton, Howard, Saline | 47 min |
| Apr 18, 7:30 PM CDT | Severe Thunderstorm Warning | EAX | Linn, Livingston | 45 min |
| Apr 18, 7:38 PM CDT | Severe Thunderstorm Warning | EAX | Harrison, Mercer | 37 min |
| Apr 18, 7:54 PM CDT | Severe Thunderstorm Warning | EAX | Carroll, Chariton, Linn, Livingston | 51 min |
| Apr 18, 8:00 PM CDT | Severe Thunderstorm Warning | EAX | Mercer, Putnam, Sullivan | 23 min |
| Apr 18, 8:03 PM CDT | Severe Thunderstorm Warning | EAX | Chariton, Howard, Randolph | 42 min |
| Apr 18, 8:15 PM CDT | Severe Thunderstorm Warning | LSX | Boone | 57 min |
| Apr 18, 8:23 PM CDT | Severe Thunderstorm Warning | LSX | Cole, Moniteau | 37 min |
| Apr 18, 8:25 PM CDT | Severe Thunderstorm Warning | EAX | Cooper, Howard | 12 min |
| Apr 18, 8:30 PM CDT | Severe Thunderstorm Warning | EAX | Harrison, Mercer, Putnam | 45 min |
| Apr 18, 8:42 PM CDT | Severe Thunderstorm Warning | EAX | Grundy, Linn, Livingston, Sullivan | 48 min |
| Apr 18, 8:43 PM CDT | Severe Thunderstorm Warning | LSX | Callaway | 62 min |
| Apr 18, 8:44 PM CDT | Severe Thunderstorm Warning | EAX | Chariton, Linn, Macon | 46 min |
| Apr 18, 8:47 PM CDT | Severe Thunderstorm Warning | EAX | Mercer, Putnam, Sullivan | 43 min |
| Apr 18, 9:00 PM CDT | Severe Thunderstorm Warning | LSX | Cole, Osage | 45 min |
| Apr 18, 9:26 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Monroe | 24 min |
| Apr 18, 9:43 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Gasconade | 47 min |
| Apr 18, 9:46 PM CDT | Severe Thunderstorm Warning | LSX | Callaway, Osage | 29 min |
| Apr 18, 10:12 PM CDT | Tornado Warning | LSX | Franklin, Gasconade | 48 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
Topeka, KS (KTOP), launched 12:00Z, 8.6 hours before the alert went out and 199 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
- 766 J/kg
- Mixed-layer CIN
- -589 J/kg
- Mixed-layer LCL
- 631 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 414 m²/s²
- 0-3 km storm-relative helicity
- 418 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 18, 2:24 PM CDT | Mesoscale Discussion | SPC | Adair, Audrain, Benton, Boone, Caldwell, Callaway and 50 more | 3 hr |
| Apr 18, 5:45 PM CDT | Mesoscale Discussion | SPC | Adair, Audrain, Benton, Boone, Caldwell, Callaway and 45 more | 2 hr |
Nearby
Tornado Watches in Missouri, 2006Every tornado watch in 2006
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.