Alert archive / Missouri / Tornado Watches in 2008
Tornado Watch 899
The Storm Prediction Center issued this tornado watch at Sep 12, 2008, 4:28 PM CDT for 13 counties in Kansas; 14 counties in Missouri. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- Sep 12, 2008, 4:28 PM CDT (21:28 UTC)
- Expired
- Sep 12, 2008, 10:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 27 counties
Anderson County, KS, Coffey County, KS, Douglas County, KS, Franklin County, KS, Jefferson County, KS, Johnson County, KS, Leavenworth County, KS, Linn County, KS, Lyon County, KS, Miami County, KS, Osage County, KS, Shawnee County, KS, Wyandotte County, KS, Bates County, MO, Carroll County, MO, Cass County, MO, Clay County, MO, Cooper County, MO, Henry County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Pettis County, MO, Platte County, MO, Ray County, MO, Saline County, MO
The radar
The Pleasant Hill radar (KEAX), 54 km from the middle of the area, began a volume at 21:29 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
20 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 12, 4:29 PM CDT | Tornado Warning | EAX | Johnson, Pettis | 31 min |
| Sep 12, 4:32 PM CDT | Tornado Warning | EAX | Miami | 28 min |
| Sep 12, 4:51 PM CDT | Tornado Warning | EAX | Johnson | 24 min |
| Sep 12, 4:55 PM CDT | Tornado Warning | EAX | Johnson, Miami | 35 min |
| Sep 12, 4:59 PM CDT | Tornado Warning | EAX | Pettis | 31 min |
| Sep 12, 5:13 PM CDT | Tornado Warning | EAX | Johnson | 47 min |
| Sep 12, 5:14 PM CDT | Tornado Warning | TOP | Douglas | 28 min |
| Sep 12, 5:23 PM CDT | Tornado Warning | EAX | Leavenworth, Wyandotte | 37 min |
| Sep 12, 5:27 PM CDT | Tornado Warning | EAX | Pettis, Saline | 33 min |
| Sep 12, 5:29 PM CDT | Tornado Warning | EAX | Johnson | 31 min |
| Sep 12, 5:57 PM CDT | Tornado Warning | EAX | Jackson | 33 min |
| Sep 12, 5:58 PM CDT | Tornado Warning | EAX | Cooper, Pettis, Saline | 47 min |
| Sep 12, 5:59 PM CDT | Tornado Warning | EAX | Wyandotte | 46 min |
| Sep 12, 6:01 PM CDT | Tornado Warning | EAX | Johnson | 26 min |
| Sep 12, 6:23 PM CDT | Tornado Warning | EAX | Jackson | 22 min |
| Sep 12, 6:30 PM CDT | Flash Flood Warning | EAX | Johnson, Leavenworth, Wyandotte | 6 hr |
| Sep 12, 6:34 PM CDT | Tornado Warning | EAX | Chariton, Howard, Saline | 41 min |
| Sep 12, 6:46 PM CDT | Tornado Warning | EAX | Jackson, Ray | 29 min |
| Sep 12, 7:09 PM CDT | Flash Flood Warning | EAX | Johnson, Wyandotte | 6 hr |
| Sep 12, 8:48 PM CDT | Flash Flood Warning | EAX | Caldwell, Carroll, Grundy, Jackson, Linn, Livingston and 1 more | 12 hr |
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, 9.5 hours before the alert went out and 67 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
- 595 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 46 m²/s²
- 0-3 km storm-relative helicity
- 76 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 |
|---|---|---|---|---|
| Sep 12, 1:41 AM CDT | Mesoscale Discussion | SPC | Butler, Cowley, Harper, Sedgwick, Sumner | 2 hr |
| Sep 12, 3:56 PM CDT | Mesoscale Discussion | SPC | Allen, Anderson, Bourbon, Coffey, Douglas, Franklin and 7 more | 94 min |
| Sep 12, 5:39 PM CDT | Mesoscale Discussion | SPC | Audrain, Callaway, Franklin, Lincoln, Monroe, Montgomery and 6 more | 96 min |
Nearby
Tornado Watches in Missouri, 2008Tornado Watches in Kansas, 2008Every tornado watch in 2008
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.