Alert archive / Missouri / Mesoscale Discussions in 2018
Mesoscale Discussion 586
The Storm Prediction Center issued this mesoscale discussion at May 31, 2018, 12:24 PM CDT for 10 counties in Arkansas; 33 counties in Missouri. It was in force for 96 min.
The area
The outline as issued.
The facts
- Issued
- May 31, 2018, 12:24 PM CDT (17:24 UTC)
- Expired
- May 31, 2018, 2:00 PM CDT
- In force
- 96 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 95%
All 43 counties
Baxter County, AR, Benton County, AR, Boone County, AR, Carroll County, AR, Clay County, AR, Fulton County, AR, Izard County, AR, Marion County, AR, Randolph County, AR, Sharp County, AR, Barry County, MO, Bollinger County, MO, Butler County, MO, Carter County, MO, Christian County, MO, Crawford County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Greene County, MO, Howell County, MO, Iron County, MO, Laclede County, MO, Lawrence County, MO, Madison County, MO, Maries County, MO, McDonald County, MO, Newton County, MO, Oregon County, MO, Ozark County, MO, Phelps County, MO, Pulaski County, MO, Reynolds County, MO, Ripley County, MO, Saint Francois County, MO, Shannon County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Washington County, MO, Wayne County, MO, Webster County, MO, Wright County, MO
The radar
The Springfield radar (KSGF), 130 km from the middle of the area, began a volume at 17:21 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
Springfield, MO (KSGF), launched 12:00Z, 5.4 hours before the alert went out and 165 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
- 133 J/kg
- Mixed-layer CIN
- -299 J/kg
- Mixed-layer LCL
- 880 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- -216 m²/s²
- 0-3 km storm-relative helicity
- -160 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
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 |
|---|---|---|---|---|
| May 31, 2:59 AM CDT | Mesoscale Discussion | SPC | Benton, Boone, Carroll, Crawford, Franklin, Johnson and 3 more | 61 min |
| May 31, 1:57 PM CDT | Tornado Watch | SPC | Clay, Greene, Lawrence, Randolph | 6 hr |
| May 31, 4:42 PM CDT | Mesoscale Discussion | SPC | Clay, Randolph | 2 hr |
| May 31, 5:46 PM CDT | Mesoscale Discussion | SPC | Clay, Cleburne, Craighead, Fulton, Greene, Independence and 8 more | 2 hr |
Nearby
Mesoscale Discussions in Missouri, 2018Mesoscale Discussions in Arkansas, 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.