Alert archive / Missouri / Mesoscale Discussions in 2022
Mesoscale Discussion 593
The Storm Prediction Center issued this mesoscale discussion at Apr 30, 2022, 1:09 PM CDT for 5 states. It was in force for 2 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 30, 2022, 1:09 PM CDT (18:09 UTC)
- Expired
- Apr 30, 2022, 3:15 PM CDT
- In force
- 2 hr
- Issued by
- the Storm Prediction Center
- Concerning
- Severe potential...watch likely
- Chance of a watch
- 80%
All 73 counties
Baxter County, AR, Clay County, AR, Cleburne County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Fulton County, AR, Greene County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Lawrence County, AR, Mississippi County, AR, Poinsett County, AR, Randolph County, AR, Sharp County, AR, Stone County, AR, White County, AR, Woodruff County, AR, Alexander County, IL, Clinton County, IL, Franklin County, IL, Jackson County, IL, Jefferson County, IL, Johnson County, IL, Madison County, IL, Monroe County, IL, Perry County, IL, Pulaski County, IL, Randolph County, IL, Saint Clair County, IL, Union County, IL, Washington County, IL, Williamson County, IL, Ballard County, KY, Carlisle County, KY, Fulton County, KY, Hickman County, KY, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, City of Saint Louis, MO, Crawford County, MO, Dent County, MO, Dunklin County, MO, Franklin County, MO, Howell County, MO, Iron County, MO, Jefferson County, MO, Madison County, MO, Mississippi County, MO, New Madrid County, MO, Oregon County, MO, Pemiscot County, MO, Perry 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, Washington County, MO, Wayne County, MO, Dyer County, TN, Lake County, TN, Lauderdale County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN
The radar
The Paducah radar (KPAH), 190 km from the middle of the area, began a volume at 18:08 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
Little Rock, AR (KLZK), launched 12:00Z, 6.2 hours before the alert went out and 249 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
- 148 J/kg
- Mixed-layer CIN
- -401 J/kg
- Mixed-layer LCL
- 887 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 265 m²/s²
- 0-3 km storm-relative helicity
- 342 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 |
|---|---|---|---|---|
| Apr 30, 2:19 PM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Cleveland and 16 more | 2 hr |
| Apr 30, 3:52 PM CDT | Severe Thunderstorm Watch | SPC | Arkansas, Bradley, Calhoun, Clark, Clay, Cleburne and 38 more | 9 hr |
| Apr 30, 6:41 PM CDT | Mesoscale Discussion | SPC | Arkansas, Bradley, Calhoun, Cleveland, Columbia, Cross and 13 more | 94 min |
| Apr 30, 12:32 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, Cass, Christian, DeKalb and 33 more | 118 min |
| Apr 30, 1:46 PM CDT | Tornado Watch | SPC | Boone, Bureau, Carroll, Champaign, Christian, Clark and 49 more | 8 hr |
| Apr 30, 2:03 PM CDT | Tornado Watch | SPC | Alexander, Bond, Clinton, Fayette, Franklin, Jackson and 11 more | 8 hr |
| Apr 30, 2:43 PM CDT | Mesoscale Discussion | SPC | Rock Island | 92 min |
| Apr 30, 3:20 PM CDT | Mesoscale Discussion | SPC | Boone, Bureau, Carroll, DeKalb, DuPage, Ford and 25 more | 85 min |
| Apr 30, 3:57 PM CDT | Mesoscale Discussion | SPC | Clinton, Madison, Monroe, Perry, Randolph, Saint Clair and 1 more | 63 min |
| Apr 30, 5:27 PM CDT | Mesoscale Discussion | SPC | Alexander, Edwards, Franklin, Gallatin, Hamilton, Hardin and 14 more | 2 hr |
| Apr 30, 6:02 PM CDT | Mesoscale Discussion | SPC | Boone, Champaign, Christian, Coles, Cook, DeKalb and 28 more | 118 min |
| Apr 29, 8:05 PM CDT | Mesoscale Discussion | SPC | Andrew, Buchanan, Caldwell, Carroll, Cass, Clay and 15 more | 55 min |
| Apr 29, 8:34 PM CDT | Severe Thunderstorm Watch | SPC | Andrew, Atchison, Bates, Buchanan, Caldwell, Carroll and 19 more | 4 hr |
| Apr 29, 8:58 PM CDT | Mesoscale Discussion | SPC | Barton, Vernon | 2 hr |
| Apr 29, 10:32 PM CDT | Severe Thunderstorm Watch | SPC | Barry, Barton, Benton, Cedar, Christian, Dade and 12 more | 5 hr |
| Apr 29, 11:34 PM CDT | Mesoscale Discussion | SPC | Caldwell, Carroll, Chariton, Daviess, Grundy, Harrison and 9 more | 86 min |
| Apr 30, 12:48 AM CDT | Mesoscale Discussion | SPC | Barton, Dade, Jasper, Lawrence, McDonald, Newton | 87 min |
Nearby
Mesoscale Discussions in Missouri, 2022Mesoscale Discussions in Arkansas, 2022Mesoscale Discussions in Illinois, 2022Every mesoscale discussion in 2022
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.