Alert archive / Missouri / Mesoscale Discussions in 2018
Mesoscale Discussion 916
The Storm Prediction Center issued this mesoscale discussion at Jun 28, 2018, 8:43 AM CDT for 4 states. It was in force for 62 min.
The area
The outline as issued.
The facts
- Issued
- Jun 28, 2018, 8:43 AM CDT (13:43 UTC)
- Expired
- Jun 28, 2018, 9:45 AM CDT
- In force
- 62 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 79 counties
Alexander County, IL, Bond County, IL, Calhoun County, IL, Clinton County, IL, Edwards County, IL, Franklin County, IL, Gallatin County, IL, Greene County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jefferson County, IL, Jersey County, IL, Johnson County, IL, Madison County, IL, Marion County, IL, Massac County, IL, Monroe County, IL, Perry County, IL, Pike County, IL, Pope County, IL, Pulaski County, IL, Randolph County, IL, Saint Clair County, IL, Saline County, IL, Union County, IL, Washington County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Posey County, IN, Vanderburgh County, IN, Ballard County, KY, Caldwell County, KY, Calloway County, KY, Carlisle County, KY, Crittenden County, KY, Fulton County, KY, Graves County, KY, Henderson County, KY, Hickman County, KY, Hopkins County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, Union County, KY, Webster County, KY, Audrain County, MO, Bollinger County, MO, Boone County, MO, Callaway County, MO, Cape Girardeau County, MO, City of Saint Louis, MO, Cole County, MO, Crawford County, MO, Franklin County, MO, Gasconade County, MO, Iron County, MO, Jefferson County, MO, Lincoln County, MO, Madison County, MO, Marion County, MO, Mississippi County, MO, Monroe County, MO, Montgomery County, MO, Osage County, MO, Perry County, MO, Pike County, MO, Ralls County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Scott County, MO, Shelby County, MO, Stoddard County, MO, Warren County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 101 km from the middle of the area, began a volume at 13:45 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
Lincoln, IL (KILX), launched 12:00Z, 1.7 hours before the alert went out and 253 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
- 7 J/kg
- Mixed-layer CIN
- -572 J/kg
- Mixed-layer LCL
- 1140 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 68 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Jun 28, 2:00 AM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Calhoun, Clinton, Franklin, Gallatin and 20 more | 3 hr |
| Jun 28, 10:57 AM CDT | Mesoscale Discussion | SPC | Adams, Brown, Hancock, Pike, Scott | 2 hr |
| Jun 28, 1:04 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 28 more | 7 hr |
| Jun 28, 3:34 PM CDT | Mesoscale Discussion | SPC | Adams, Bond, Brown, Calhoun, Cass, Christian and 47 more | 116 min |
| Jun 28, 5:33 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 14 more | 7 hr |
| Jun 28, 10:22 AM CDT | Mesoscale Discussion | SPC | Calloway, Graves | 113 min |
| Jun 28, 7:20 AM CDT | Mesoscale Discussion | SPC | Atchison, Holt, Nodaway | 2 hr |
Nearby
Mesoscale Discussions in Missouri, 2018Mesoscale Discussions in Illinois, 2018Mesoscale Discussions in Kentucky, 2018Every mesoscale discussion in 2018
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.