Alert archive / Missouri / Severe Thunderstorm Watches in 2015
Severe Thunderstorm Watch 322
The Storm Prediction Center issued this severe thunderstorm watch at Jun 21, 2015, 12:12 PM CDT for Calhoun County, Pike County, Illinois; 7 counties in Kansas; 34 counties in Missouri. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 21, 2015, 12:12 PM CDT (17:12 UTC)
- Expired
- Jun 21, 2015, 5:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 65 kt
All 43 counties
Calhoun County, IL, Pike County, IL, Atchison County, KS, Brown County, KS, Doniphan County, KS, Jackson County, KS, Jefferson County, KS, Leavenworth County, KS, Wyandotte County, KS, Andrew County, MO, Audrain County, MO, Boone County, MO, Buchanan County, MO, Caldwell County, MO, Callaway County, MO, Carroll County, MO, Chariton County, MO, Clay County, MO, Clinton County, MO, Cole County, MO, Cooper County, MO, Daviess County, MO, DeKalb County, MO, Gasconade County, MO, Holt County, MO, Howard County, MO, Jackson County, MO, Johnson County, MO, Lafayette County, MO, Lincoln County, MO, Livingston County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Osage County, MO, Pettis County, MO, Pike County, MO, Platte County, MO, Ralls County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Warren County, MO
The radar
The Pleasant Hill radar (KEAX), 79 km from the middle of the area, began a volume at 17:14 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
- 5%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
14 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 21, 12:12 PM CDT | Severe Thunderstorm Warning | EAX | Carroll, Lafayette, Ray, Saline | 48 min |
| Jun 21, 12:24 PM CDT | Flash Flood Warning | EAX | Carroll, Lafayette, Ray, Saline | 6 hr |
| Jun 21, 12:40 PM CDT | Severe Thunderstorm Warning | EAX | Buchanan, Clay, Clinton, Platte | 50 min |
| Jun 21, 1:01 PM CDT | Severe Thunderstorm Warning | EAX | Clay, Jackson, Platte, Ray | 44 min |
| Jun 21, 1:10 PM CDT | Severe Thunderstorm Warning | EAX | Carroll, Lafayette, Ray | 50 min |
| Jun 21, 1:47 PM CDT | Severe Thunderstorm Warning | TOP | Brown, Jackson | 28 min |
| Jun 21, 1:49 PM CDT | Severe Thunderstorm Warning | EAX | Clay, Jackson, Lafayette, Ray | 41 min |
| Jun 21, 2:38 PM CDT | Severe Thunderstorm Warning | EAX | Buchanan, Clinton, DeKalb | 37 min |
| Jun 21, 3:11 PM CDT | Severe Thunderstorm Warning | EAX | Caldwell, Clinton, Ray | 49 min |
| Jun 21, 3:26 PM CDT | Flash Flood Warning | EAX | Clinton | 3 hr |
| Jun 21, 3:32 PM CDT | Severe Thunderstorm Warning | EAX | Clay, Clinton, Ray | 28 min |
| Jun 21, 3:34 PM CDT | Flash Flood Warning | EAX | Carroll, Ray | 4 hr |
| Jun 21, 3:58 PM CDT | Severe Thunderstorm Warning | EAX | Clay, Ray | 14 min |
| Jun 21, 4:38 PM CDT | Severe Thunderstorm Warning | EAX | Daviess, DeKalb, Gentry, Harrison | 37 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 (KFOE), launched 12:00Z, 5.2 hours before the alert went out and 173 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
- 1785 J/kg
- Mixed-layer CIN
- -241 J/kg
- Mixed-layer LCL
- 1089 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 153 m²/s²
- 0-3 km storm-relative helicity
- 139 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.6
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 10:12 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Cass, Fulton, Hancock, Henderson and 11 more | 63 min |
| Jun 20, 10:13 PM CDT | Severe Thunderstorm Watch | SPC | Champaign, Clark, Coles, Cumberland, Douglas, Edgar and 7 more | 4 hr |
| Jun 20, 11:32 PM CDT | Mesoscale Discussion | SPC | Champaign, Clark, Coles, Cumberland, Douglas, Edgar and 6 more | 58 min |
| Jun 21, 2:58 AM CDT | Mesoscale Discussion | SPC | Calhoun, Greene, Jersey | 2 hr |
| Jun 21, 9:42 AM CDT | Mesoscale Discussion | SPC | Calhoun, Jersey | 2 hr |
| Jun 21, 3:56 PM CDT | Mesoscale Discussion | SPC | Clinton, Franklin, Hamilton, Hardin, Jackson, Jefferson and 10 more | 2 hr |
| Jun 21, 5:05 PM CDT | Severe Thunderstorm Watch | SPC | Franklin, Gallatin, Hamilton, Hardin, Jackson, Jefferson and 7 more | 5 hr |
| Jun 21, 3:03 PM CDT | Mesoscale Discussion | SPC | Doniphan | 87 min |
| Jun 21, 6:44 PM CDT | Mesoscale Discussion | SPC | Andrew, Atchison, Daviess, Gentry, Grundy, Harrison and 6 more | 91 min |
Nearby
Severe Thunderstorm Watches in Missouri, 2015Severe Thunderstorm Watches in Kansas, 2015Severe Thunderstorm Watches in Illinois, 2015Every severe thunderstorm watch in 2015
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.