Alert archive / Missouri / Severe Thunderstorm Watches in 2017
Severe Thunderstorm Watch 343
The Storm Prediction Center issued this severe thunderstorm watch at Jun 16, 2017, 11:36 PM CDT for 17 counties in Missouri. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 16, 2017, 11:36 PM CDT (04:36 UTC)
- Expired
- Jun 17, 2017, 3:01 AM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
Counties Audrain County, MO, Boone County, MO, Callaway County, MO, Cole County, MO, Gasconade County, MO, Knox County, MO, Lewis County, MO, Lincoln County, MO, Marion County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Osage County, MO, Pike County, MO, Ralls County, MO, Shelby County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 139 km from the middle of the area, began a volume at 04:38 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
- 10%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 10%
- Six or more combined severe hail and wind reports
- 70%
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 4.6 hours before the alert went out and 267 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
- 962 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 1772 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 2 m²/s²
- 0-3 km storm-relative helicity
- 94 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.8
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 16, 10:25 PM CDT | Severe Thunderstorm Watch | SPC | Boone, Bureau, Carroll, DeKalb, Henry, Jo Daviess and 9 more | 5 hr |
| Jun 17, 1:35 AM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, DeKalb, Henry, Jo Daviess and 15 more | 115 min |
| Jun 17, 2:44 PM CDT | Mesoscale Discussion | SPC | Adams, Boone, Bureau, Carroll, Cook, DeKalb and 32 more | 2 hr |
| Jun 17, 5:39 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Boone, Brown, Bureau, Cass, Champaign and 45 more | 7 hr |
| Jun 16, 7:52 PM CDT | Severe Thunderstorm Watch | SPC | Adair, Andrew, Atchison, Bates, Buchanan, Caldwell and 31 more | 9 hr |
| Jun 16, 9:27 PM CDT | Mesoscale Discussion | SPC | Andrew, Atchison, Buchanan, Caldwell, Cass, Clay and 14 more | 2 hr |
| Jun 16, 11:14 PM CDT | Mesoscale Discussion | SPC | Adair, Audrain, Bates, Benton, Boone, Buchanan and 37 more | 91 min |
| Jun 17, 12:09 AM CDT | Severe Thunderstorm Watch | SPC | Barry, Barton, Benton, Camden, Cedar, Dade and 18 more | 9 hr |
| Jun 17, 2:58 AM CDT | Mesoscale Discussion | SPC | Barton, Bates, Benton, Camden, Cedar, Christian and 25 more | 2 hr |
| Jun 17, 5:31 AM CDT | Mesoscale Discussion | SPC | Barry, Barton, Cedar, Christian, Dade, Greene and 7 more | 89 min |
| Jun 17, 3:45 PM CDT | Mesoscale Discussion | SPC | Andrew, Bates, Buchanan, Caldwell, Carroll, Cass and 11 more | 3 hr |
| Jun 17, 6:12 PM CDT | Severe Thunderstorm Watch | SPC | Bates, Buchanan, Caldwell, Carroll, Cass, Chariton and 20 more | 7 hr |
Nearby
Severe Thunderstorm Watches in Missouri, 2017Every severe thunderstorm watch in 2017
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.