Alert archive / Missouri / Mesoscale Discussions in 2019
Mesoscale Discussion 486
The Storm Prediction Center issued this mesoscale discussion at Apr 30, 2019, 6:00 PM CDT for 4 states. It was in force for 90 min.
The area
The outline as issued.
The facts
- Issued
- Apr 30, 2019, 6:00 PM CDT (23:00 UTC)
- Expired
- Apr 30, 2019, 7:30 PM CDT
- In force
- 90 min
- Issued by
- the Storm Prediction Center
All 54 counties
Benton County, AR, Boone County, AR, Carroll County, AR, Crawford County, AR, Franklin County, AR, Madison County, AR, Marion County, AR, Newton County, AR, Sebastian County, AR, Washington County, AR, Allen County, KS, Bourbon County, KS, Cherokee County, KS, Crawford County, KS, Labette County, KS, Neosho County, KS, Barry County, MO, Barton County, MO, Cedar County, MO, Christian County, MO, Dade County, MO, Dallas County, MO, Dent County, MO, Douglas County, MO, Greene County, MO, Hickory County, MO, Howell County, MO, Jasper County, MO, Laclede County, MO, Lawrence County, MO, McDonald County, MO, Newton County, MO, Ozark County, MO, Polk County, MO, Pulaski County, MO, Reynolds County, MO, Shannon County, MO, Stone County, MO, Taney County, MO, Texas County, MO, Vernon County, MO, Webster County, MO, Wright County, MO, Adair County, OK, Cherokee County, OK, Craig County, OK, Delaware County, OK, LeFlore County, OK, Mayes County, OK, Nowata County, OK, Ottawa County, OK, Rogers County, OK, Sequoyah County, OK, Wagoner County, OK
The radar
The Springfield radar (KSGF), 63 km from the middle of the area, began a volume at 23:03 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, 11.0 hours before the alert went out and 30 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
- 1237 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 721 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 172 m²/s²
- 0-3 km storm-relative helicity
- 180 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.3
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 |
|---|---|---|---|---|
| Apr 30, 12:02 PM CDT | Tornado Watch | SPC | Benton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more | 13 hr |
| Apr 30, 3:26 PM CDT | Mesoscale Discussion | SPC | Benton, Washington | 2 hr |
| Apr 30, 12:39 PM CDT | Mesoscale Discussion | SPC | Franklin, Gasconade, Jefferson, Lincoln, Saint Charles, Saint Louis and 2 more | 2 hr |
| Apr 30, 1:00 PM CDT | Severe Thunderstorm Watch | SPC | Crawford, Franklin, Jefferson, Lincoln, Saint Charles, Sainte Genevieve and 5 more | 7 hr |
| Apr 30, 4:35 PM CDT | Mesoscale Discussion | SPC | Franklin, Jefferson, Lincoln, Saint Charles, Saint Louis, Warren and 2 more | 55 min |
| Apr 30, 11:41 AM CDT | Mesoscale Discussion | SPC | Adair, Atoka, Caddo, Canadian, Carter, Cherokee and 41 more | 2 hr |
| Apr 30, 2:56 PM CDT | Mesoscale Discussion | SPC | Caddo, Comanche, Grady, Oklahoma, Tillman | 2 hr |
| Apr 30, 5:21 PM CDT | Mesoscale Discussion | SPC | Carter, Cleveland, Coal, Cotton, Creek, Garvin and 15 more | 84 min |
Nearby
Mesoscale Discussions in Missouri, 2019Mesoscale Discussions in Oklahoma, 2019Mesoscale Discussions in Arkansas, 2019Every mesoscale discussion in 2019
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.