Alert archive / Missouri / Mesoscale Discussions in 2018
Mesoscale Discussion 84
The Storm Prediction Center issued this mesoscale discussion at Feb 21, 2018, 5:01 PM CST for 4 states. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 21, 2018, 5:01 PM CST (23:01 UTC)
- Expired
- Feb 21, 2018, 10:00 PM CST
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 35 counties
Benton County, AR, Cherokee County, KS, Barry County, MO, Camden County, MO, Christian County, MO, Crawford County, MO, Dade County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Greene County, MO, Jasper County, MO, Laclede County, MO, Lawrence County, MO, Maries County, MO, McDonald County, MO, Newton County, MO, Phelps County, MO, Polk County, MO, Pulaski County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Webster County, MO, Wright County, MO, Adair County, OK, Cherokee County, OK, Craig County, OK, Delaware County, OK, Mayes County, OK, Muskogee County, OK, Ottawa County, OK, Rogers County, OK, Tulsa County, OK, Wagoner County, OK
The radar
The Springfield radar (KSGF), 51 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
Springfield, MO (KSGF), launched 12:00Z, 11.0 hours before the alert went out and 10 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
- 12 J/kg
- Mixed-layer CIN
- 0 J/kg
- Mixed-layer LCL
- 414 m above ground
- 0-6 km bulk shear
- 79 kt
- 0-1 km storm-relative helicity
- -16 m²/s²
- 0-3 km storm-relative helicity
- -84 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 |
|---|---|---|---|---|
| Feb 20, 9:18 PM CST | Mesoscale Discussion | SPC | Audrain, Callaway, Camden, Cole, Crawford, Dallas and 17 more | 6 hr |
| Feb 21, 7:57 AM CST | Mesoscale Discussion | SPC | Carter, Comanche, Cotton, Jackson, Jefferson, Kiowa and 2 more | 4 hr |
| Feb 21, 12:44 PM CST | Mesoscale Discussion | SPC | Carter, Coal, Garvin, Hughes, Jefferson, Johnston and 4 more | 4 hr |
Nearby
Mesoscale Discussions in Missouri, 2018Mesoscale Discussions in Oklahoma, 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.