Alert archive / Missouri / Mesoscale Discussions in 2014
Mesoscale Discussion 422
The Storm Prediction Center issued this mesoscale discussion at Apr 27, 2014, 1:59 PM CDT for Calhoun County, Illinois; 34 counties in Iowa; 66 counties in Missouri. It was in force for 61 min.
The area
The outline as issued.
The facts
- Issued
- Apr 27, 2014, 1:59 PM CDT (18:59 UTC)
- Expired
- Apr 27, 2014, 3:00 PM CDT
- In force
- 61 min
- Issued by
- the Storm Prediction Center
All 101 counties
Adair County, IA, Appanoose County, IA, Audubon County, IA, Boone County, IA, Calhoun County, IA, Carroll County, IA, Clarke County, IA, Crawford County, IA, Dallas County, IA, Davis County, IA, Decatur County, IA, Greene County, IA, Guthrie County, IA, Hamilton County, IA, Jasper County, IA, Jefferson County, IA, Keokuk County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Marshall County, IA, Monroe County, IA, Polk County, IA, Poweshiek County, IA, Ringgold County, IA, Sac County, IA, Story County, IA, Union County, IA, Van Buren County, IA, Wapello County, IA, Warren County, IA, Wayne County, IA, Webster County, IA, Calhoun County, IL, Adair County, MO, Audrain County, MO, Barton County, MO, Benton County, MO, Boone County, MO, Caldwell County, MO, Callaway County, MO, Camden County, MO, Carroll County, MO, Cedar County, MO, Chariton County, MO, Clark County, MO, Cole County, MO, Cooper County, MO, Crawford County, MO, Dade County, MO, Dallas County, MO, Daviess County, MO, Dent County, MO, Franklin County, MO, Gasconade County, MO, Grundy County, MO, Harrison County, MO, Henry County, MO, Hickory County, MO, Howard County, MO, Jasper County, MO, Jefferson County, MO, Johnson County, MO, Knox County, MO, Laclede County, MO, Lafayette County, MO, Lewis County, MO, Lincoln County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Maries County, MO, Marion County, MO, Mercer County, MO, Miller County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Morgan County, MO, Osage County, MO, Pettis County, MO, Phelps County, MO, Pike County, MO, Polk County, MO, Pulaski County, MO, Putnam County, MO, Ralls County, MO, Randolph County, MO, Ray County, MO, Saint Charles County, MO, Saint Louis County, MO, Saline County, MO, Schuyler County, MO, Scotland County, MO, Shelby County, MO, St. Clair County, MO, Sullivan County, MO, Vernon County, MO, Warren County, MO, Washington County, MO
The radar
The Pleasant Hill radar (KEAX), 141 km from the middle of the area, began a volume at 19:02 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
Topeka, KS (KFOE), launched 12:00Z, 7.0 hours before the alert went out and 247 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
- 1488 J/kg
- Mixed-layer CIN
- -135 J/kg
- Mixed-layer LCL
- 991 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 215 m²/s²
- 0-3 km storm-relative helicity
- 242 m²/s²
- Significant tornado parameter
- 0.9
- Supercell composite
- 4.4
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 27, 2:13 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Calhoun, Cass, Fulton, Greene and 14 more | 7 hr |
| Apr 27, 4:26 PM CDT | Mesoscale Discussion | SPC | Carroll, Hancock, Henderson, Henry, Jo Daviess, Knox and 3 more | 64 min |
| Apr 27, 10:37 AM CDT | Mesoscale Discussion | SPC | Page, Ringgold, Taylor | 113 min |
| Apr 27, 11:23 AM CDT | Tornado Watch | SPC | Adair, Adams, Appanoose, Audubon, Cass, Clarke and 14 more | 8 hr |
| Apr 27, 4:57 PM CDT | Mesoscale Discussion | SPC | Adair, Barry, Barton, Bates, Benton, Buchanan and 60 more | 63 min |
| Apr 27, 6:10 PM CDT | Mesoscale Discussion | SPC | Barry, Barton, Bates, Benton, Camden, Cass and 29 more | 95 min |
| Apr 27, 6:26 PM CDT | Tornado Watch | SPC | Barry, Barton, Bates, Benton, Buchanan, Caldwell and 43 more | 8 hr |
Nearby
Mesoscale Discussions in Missouri, 2014Mesoscale Discussions in Iowa, 2014Mesoscale Discussions in Illinois, 2014Every mesoscale discussion in 2014
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.