Alert archive / Missouri / Mesoscale Discussions in 2015
Mesoscale Discussion 746
The Storm Prediction Center issued this mesoscale discussion at May 24, 2015, 6:04 PM CDT for 6 states. It was in force for 116 min.
The area
The outline as issued.
The facts
- Issued
- May 24, 2015, 6:04 PM CDT (23:04 UTC)
- Expired
- May 24, 2015, 8:00 PM CDT
- In force
- 116 min
- Issued by
- the Storm Prediction Center
All 84 counties
Clay County, AR, Craighead County, AR, Crittenden County, AR, Cross County, AR, Greene County, AR, Lee County, AR, Mississippi County, AR, Poinsett County, AR, Randolph County, AR, St. Francis County, AR, Alexander County, IL, Calhoun County, IL, Greene County, IL, Jackson County, IL, Jersey County, IL, Madison County, IL, Monroe County, IL, Perry County, IL, Pike County, IL, Randolph County, IL, Saint Clair County, IL, Union County, IL, Fulton 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, Gasconade County, MO, Iron County, MO, Jefferson 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, Pemiscot County, MO, Perry County, MO, Phelps County, MO, Pike County, MO, Ralls 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, Texas County, MO, Warren County, MO, Washington County, MO, Wayne County, MO, Benton County, MS, Chickasaw County, MS, DeSoto County, MS, Lafayette County, MS, Marshall County, MS, Panola County, MS, Pontotoc County, MS, Quitman County, MS, Tate County, MS, Tippah County, MS, Tunica County, MS, Union County, MS, Crockett County, TN, Dyer County, TN, Fayette County, TN, Hardeman County, TN, Haywood County, TN, Lake County, TN, Lauderdale County, TN, Madison County, TN, Obion County, TN, Shelby County, TN, Tipton County, TN
The radar
The Paducah radar (KPAH), 161 km from the middle of the area, began a volume at 23:05 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
Little Rock, AR (KBYH), launched 12:00Z, 11.1 hours before the alert went out and 227 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
- 458 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 662 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 99 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.0
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 |
|---|---|---|---|---|
| May 23, 10:49 PM CDT | Mesoscale Discussion | SPC | Benton, Crawford, Franklin, Scott, Sebastian, Washington | 86 min |
| May 24, 12:05 PM CDT | Mesoscale Discussion | SPC | Calhoun, Clark, Columbia, Dallas, Garland, Grant and 18 more | 115 min |
| May 24, 12:34 PM CDT | Tornado Watch | SPC | Arkansas, Baxter, Boone, Bradley, Calhoun, Carroll and 52 more | 6 hr |
| May 24, 1:49 PM CDT | Tornado Watch | SPC | Ashley, Chicot | 8 hr |
| May 24, 3:31 PM CDT | Mesoscale Discussion | SPC | Ashley, Baxter, Boone, Bradley, Calhoun, Clark and 31 more | 89 min |
| May 24, 4:14 PM CDT | Tornado Watch | SPC | Clay, Craighead, Crittenden, Cross, Greene, Lawrence and 6 more | 8 hr |
| May 24, 3:34 PM CDT | Mesoscale Discussion | SPC | Bureau, Carroll, Fulton, Hancock, Henderson, Henry and 17 more | 56 min |
| May 24, 5:34 PM CDT | Tornado Watch | SPC | Boone, Bureau, Carroll, Cass, Christian, DeKalb and 36 more | 7 hr |
| May 24, 6:41 PM CDT | Mesoscale Discussion | SPC | Bureau, Carroll, Cass, Fulton, Grundy, Hancock and 22 more | 94 min |
| May 24, 5:03 PM CDT | Mesoscale Discussion | SPC | Adams, Amite, Claiborne, Copiah, Covington, Forrest and 27 more | 117 min |
| May 24, 12:54 PM CDT | Mesoscale Discussion | SPC | Audrain, Benton, Boone, Callaway, Camden, Chariton and 34 more | 96 min |
| May 24, 1:18 PM CDT | Tornado Watch | SPC | Adair, Audrain, Benton, Boone, Callaway, Camden and 56 more | 6 hr |
Nearby
Mesoscale Discussions in Missouri, 2015Mesoscale Discussions in Illinois, 2015Mesoscale Discussions in Mississippi, 2015Every mesoscale discussion in 2015
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.