Alert archive / Missouri / Mesoscale Discussions in 2017
Mesoscale Discussion 268
The Storm Prediction Center issued this mesoscale discussion at Mar 6, 2017, 11:13 PM CST for 37 counties in Illinois; Ballard County, Kentucky; 44 counties in Missouri. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 6, 2017, 11:13 PM CST (05:13 UTC)
- Expired
- Mar 7, 2017, 1:15 AM CST
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
All 82 counties
Alexander County, IL, Bond County, IL, Calhoun County, IL, Clay County, IL, Clinton County, IL, Cumberland County, IL, Edwards County, IL, Effingham County, IL, Fayette County, IL, Franklin County, IL, Gallatin County, IL, Greene County, IL, Hamilton County, IL, Jackson County, IL, Jasper County, IL, Jefferson County, IL, Jersey County, IL, Johnson County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Massac County, IL, Monroe County, IL, Montgomery County, IL, Perry County, IL, Pope County, IL, Pulaski County, IL, Randolph County, IL, Richland County, IL, Saint Clair County, IL, Saline County, IL, Shelby County, IL, Union County, IL, Washington County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Ballard County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, Christian County, MO, City of Saint Louis, MO, Crawford County, MO, Dent County, MO, Douglas County, MO, Franklin County, MO, Gasconade County, MO, Howell County, MO, Iron County, MO, Jefferson County, MO, Laclede County, MO, Lincoln County, MO, Madison County, MO, Maries County, MO, Mississippi County, MO, Montgomery County, MO, New Madrid County, MO, Oregon County, MO, Osage County, MO, Ozark County, MO, Perry County, MO, Phelps County, MO, Pike County, MO, Pulaski County, MO, Reynolds County, MO, Ripley County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Scott County, MO, Shannon County, MO, Stoddard County, MO, Taney County, MO, Texas County, MO, Warren County, MO, Washington County, MO, Wayne County, MO, Webster County, MO, Wright County, MO
The radar
The St Louis radar (KLSX), 96 km from the middle of the area, began a volume at 05:14 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 nearest sounding before it
Springfield, MO (KSGF), launched 00:00Z, 5.2 hours before the alert went out and 283 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
- 629 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 1110 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 319 m²/s²
- 0-3 km storm-relative helicity
- 542 m²/s²
- Significant tornado parameter
- 1.7
- Supercell composite
- 8.2
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 |
|---|---|---|---|---|
| Mar 6, 7:42 PM CST | Mesoscale Discussion | SPC | Bureau, Carroll, Henderson, Henry, Jo Daviess, Knox and 12 more | 63 min |
| Mar 6, 8:10 PM CST | Mesoscale Discussion | SPC | Alexander | 3 hr |
| Mar 6, 8:22 PM CST | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 24 more | 2 hr |
| Mar 6, 8:52 PM CST | Tornado Watch | SPC | Adams, Bond, Brown, Bureau, Calhoun, Carroll and 38 more | 6 hr |
| Mar 6, 10:15 PM CST | Mesoscale Discussion | SPC | Boone, DeKalb, DeWitt, Ford, Grundy, Kane and 11 more | 60 min |
| Mar 6, 10:35 PM CST | Severe Thunderstorm Watch | SPC | Boone, Champaign, Christian, Coles, Cook, DeKalb and 25 more | 4 hr |
| Mar 7, 1:53 AM CST | Mesoscale Discussion | SPC | Champaign, Coles, Cumberland, Douglas, Edgar, Iroquois and 3 more | 97 min |
| Mar 7, 2:58 AM CST | Mesoscale Discussion | SPC | Alexander, Franklin, Gallatin, Hamilton, Hardin, Jackson and 8 more | 92 min |
| Mar 6, 6:02 PM CST | Mesoscale Discussion | SPC | Barry, Barton, Bates, Benton, Camden, Cedar and 22 more | 58 min |
| Mar 6, 6:31 PM CST | Mesoscale Discussion | SPC | Adair, Andrew, Bates, Benton, Buchanan, Caldwell and 32 more | 119 min |
| Mar 6, 6:51 PM CST | Tornado Watch | SPC | Barry, Barton, Benton, Camden, Cedar, Christian and 28 more | 8 hr |
| Mar 6, 7:19 PM CST | Mesoscale Discussion | SPC | Buchanan, Caldwell, Carroll, Cass, Chariton, Clay and 15 more | 116 min |
| Mar 6, 9:16 PM CST | Mesoscale Discussion | SPC | Barry, McDonald | 119 min |
| Mar 6, 9:21 PM CST | Tornado Watch | SPC | Bollinger, Butler, Cape Girardeau, Carter, Dunklin, Perry and 3 more | 8 hr |
| Mar 7, 3:37 AM CST | Severe Thunderstorm Watch | SPC | Pemiscot | 8 hr |
Nearby
Mesoscale Discussions in Missouri, 2017Mesoscale Discussions in Illinois, 2017Mesoscale Discussions in Kentucky, 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.