Alert archive / Missouri / Mesoscale Discussions in 2017
Mesoscale Discussion 1778
The Storm Prediction Center issued this mesoscale discussion at Dec 4, 2017, 1:26 PM CST for 5 states. It was in force for 94 min.
The area
The outline as issued.
The facts
- Issued
- Dec 4, 2017, 1:26 PM CST (19:26 UTC)
- Expired
- Dec 4, 2017, 3:00 PM CST
- In force
- 94 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 60%
All 87 counties
Benton County, AR, Boone County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Johnson County, AR, Logan County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Polk County, AR, Pope County, AR, Scott County, AR, Sebastian County, AR, Washington County, AR, Yell County, AR, Lee County, IA, Van Buren County, IA, Adams County, IL, Hancock County, IL, Adair County, MO, Audrain County, MO, Barry County, MO, Barton County, MO, Benton County, MO, Boone County, MO, Callaway County, MO, Camden County, MO, Carroll County, MO, Cedar County, MO, Chariton County, MO, Christian County, MO, Clark County, MO, Cole County, MO, Cooper County, MO, Dade County, MO, Dallas County, MO, Douglas County, MO, Greene County, MO, Henry County, MO, Hickory County, MO, Howard County, MO, Jasper County, MO, Johnson County, MO, Knox County, MO, Laclede County, MO, Lawrence County, MO, Lewis County, MO, Linn County, MO, Macon County, MO, Maries County, MO, Marion County, MO, McDonald County, MO, Miller County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Morgan County, MO, Newton County, MO, Osage County, MO, Ozark County, MO, Pettis County, MO, Polk County, MO, Pulaski County, MO, Ralls County, MO, Randolph County, MO, Saline County, MO, Schuyler County, MO, Scotland County, MO, Shelby County, MO, St. Clair County, MO, Stone County, MO, Taney County, MO, Vernon County, MO, Webster County, MO, Wright County, MO, Adair County, OK, Cherokee County, OK, Delaware County, OK, Haskell County, OK, Latimer County, OK, LeFlore County, OK, Mayes County, OK, McIntosh County, OK, Muskogee County, OK, Ottawa County, OK, Sequoyah County, OK
The radar
The Springfield radar (KSGF), 21 km from the middle of the area, began a volume at 19:31 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 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, 7.4 hours before the alert went out and 58 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 840 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 367 m²/s²
- 0-3 km storm-relative helicity
- 360 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 |
|---|---|---|---|---|
| Dec 4, 3:39 PM CST | Severe Thunderstorm Watch | SPC | Benton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more | 5 hr |
| Dec 4, 5:34 PM CST | Mesoscale Discussion | SPC | Benton, Boone, Carroll, Conway, Crawford, Franklin and 20 more | 86 min |
| Dec 4, 2:34 PM CST | Severe Thunderstorm Watch | SPC | Adams, Brown, Pike | 5 hr |
| Dec 4, 3:57 PM CST | Mesoscale Discussion | SPC | Adams, Brown, Pike | 93 min |
Nearby
Mesoscale Discussions in Missouri, 2017Mesoscale Discussions in Arkansas, 2017Mesoscale Discussions in Oklahoma, 2017Every mesoscale discussion in 2017
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.