Alert archive / Missouri / Mesoscale Discussions in 2017
Mesoscale Discussion 1728
The Storm Prediction Center issued this mesoscale discussion at Oct 21, 2017, 8:10 PM CDT for 20 counties in Kansas; 46 counties in Missouri. It was in force for 95 min.
The area
The outline as issued.
The facts
- Issued
- Oct 21, 2017, 8:10 PM CDT (01:10 UTC)
- Expired
- Oct 21, 2017, 9:45 PM CDT
- In force
- 95 min
- Issued by
- the Storm Prediction Center
All 66 counties
Allen County, KS, Anderson County, KS, Bourbon County, KS, Chautauqua County, KS, Cherokee County, KS, Coffey County, KS, Crawford County, KS, Douglas County, KS, Elk County, KS, Franklin County, KS, Johnson County, KS, Labette County, KS, Leavenworth County, KS, Linn County, KS, Miami County, KS, Montgomery County, KS, Neosho County, KS, Wilson County, KS, Woodson County, KS, Wyandotte County, KS, Barry County, MO, Barton County, MO, Bates County, MO, Benton County, MO, Caldwell County, MO, Camden County, MO, Carroll County, MO, Cass County, MO, Cedar County, MO, Chariton County, MO, Christian County, MO, Clay County, MO, Clinton County, MO, Cooper County, MO, Dade County, MO, Dallas County, MO, Daviess County, MO, Greene County, MO, Grundy County, MO, Henry County, MO, Hickory County, MO, Howard County, MO, Jackson County, MO, Jasper County, MO, Johnson County, MO, Laclede County, MO, Lafayette County, MO, Lawrence County, MO, Linn County, MO, Livingston County, MO, McDonald County, MO, Mercer County, MO, Moniteau County, MO, Morgan County, MO, Newton County, MO, Pettis County, MO, Platte County, MO, Polk County, MO, Ray County, MO, Saline County, MO, St. Clair County, MO, Stone County, MO, Sullivan County, MO, Taney County, MO, Vernon County, MO, Webster County, MO
The radar
The Pleasant Hill radar (KEAX), 71 km from the middle of the area, began a volume at 01:14 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.
The watches that followed
Watches SPC issued over any of the same counties within four hours of this discussion.
The nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 1.2 hours before the alert went out and 145 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
- 700 J/kg
- Mixed-layer CIN
- -128 J/kg
- Mixed-layer LCL
- 1064 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 157 m²/s²
- 0-3 km storm-relative helicity
- 169 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 1.4
The text
As transmitted.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 21, 10:06 PM CDT | Severe Thunderstorm Watch | SPC | Bourbon, Cherokee, Crawford | 5 hr |
| Oct 21, 11:56 PM CDT | Severe Thunderstorm Watch | SPC | Douglas, Howell, Laclede, Ozark, Texas, Wright | 7 hr |
| Oct 22, 1:44 AM CDT | Mesoscale Discussion | SPC | Camden, Christian, Cole, Crawford, Dallas, Dent and 14 more | 91 min |
| Oct 22, 4:57 AM CDT | Mesoscale Discussion | SPC | Butler, Carter, Dent, Dunklin, Iron, Madison and 7 more | 93 min |
Nearby
Mesoscale Discussions in Missouri, 2017Mesoscale Discussions in Kansas, 2017Every mesoscale discussion 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.