Alert archive / Arkansas / Mesoscale Discussions in 2018
Mesoscale Discussion 628
The Storm Prediction Center issued this mesoscale discussion at Jun 2, 2018, 6:31 PM CDT for 39 counties in Arkansas; 12 counties in Missouri. It was in force for 89 min.
The area
The outline as issued.
The facts
- Issued
- Jun 2, 2018, 6:31 PM CDT (23:31 UTC)
- Expired
- Jun 2, 2018, 8:00 PM CDT
- In force
- 89 min
- Issued by
- the Storm Prediction Center
All 51 counties
Baxter County, AR, Clay County, AR, Cleburne County, AR, Conway County, AR, Craighead County, AR, Cross County, AR, Faulkner County, AR, Fulton County, AR, Garland County, AR, Greene County, AR, Independence County, AR, Izard County, AR, Jackson County, AR, Johnson County, AR, Lawrence County, AR, Lee County, AR, Logan County, AR, Lonoke County, AR, Marion County, AR, Mississippi County, AR, Monroe County, AR, Montgomery County, AR, Newton County, AR, Perry County, AR, Phillips County, AR, Poinsett County, AR, Pope County, AR, Prairie County, AR, Pulaski County, AR, Randolph County, AR, Saline County, AR, Searcy County, AR, Sharp County, AR, St. Francis County, AR, Stone County, AR, Van Buren County, AR, White County, AR, Woodruff County, AR, Yell County, AR, Butler County, MO, Carter County, MO, Dunklin County, MO, Howell County, MO, New Madrid County, MO, Oregon County, MO, Ozark County, MO, Ripley County, MO, Scott County, MO, Shannon County, MO, Stoddard County, MO, Wayne County, MO
The radar
The Little Rock radar (KLZK), 128 km from the middle of the area, began a volume at 23:31 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
Springfield, MO (KSGF), launched 12:00Z, 11.5 hours before the alert went out and 207 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
- 2602 J/kg
- Mixed-layer CIN
- -176 J/kg
- Mixed-layer LCL
- 909 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 26 m²/s²
- 0-3 km storm-relative helicity
- 63 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
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 2, 1:33 PM CDT | Mesoscale Discussion | SPC | Arkansas, Baxter, Boone, Clark, Clay, Cleburne and 42 more | 117 min |
| Jun 2, 2:19 PM CDT | Severe Thunderstorm Watch | SPC | Arkansas, Baxter, Clay, Cleburne, Conway, Craighead and 42 more | 10 hr |
| Jun 2, 3:42 PM CDT | Mesoscale Discussion | SPC | Arkansas, Baxter, Boone, Clay, Cleburne, Conway and 41 more | 2 hr |
| Jun 2, 12:50 AM CDT | Mesoscale Discussion | SPC | Andrew, Atchison, Bates, Buchanan, Cass, Clay and 10 more | 55 min |
| Jun 2, 5:48 AM CDT | Severe Thunderstorm Watch | SPC | Barton, Bates, Benton, Camden, Carroll, Cass and 25 more | 4 hr |
| Jun 2, 9:12 AM CDT | Mesoscale Discussion | SPC | Benton, Callaway, Camden, Cape Girardeau, Cedar, Cole and 27 more | 2 hr |
Nearby
Mesoscale Discussions in Arkansas, 2018Mesoscale Discussions in Missouri, 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.