Alert archive / Missouri / Mesoscale Discussions in 2017
Mesoscale Discussion 1506
The Storm Prediction Center issued this mesoscale discussion at Aug 16, 2017, 12:42 PM CDT for 6 counties in Iowa; 49 counties in Missouri. It was in force for 3 hr.
The area
The outline as issued.
The facts
- Issued
- Aug 16, 2017, 12:42 PM CDT (17:42 UTC)
- Expired
- Aug 16, 2017, 3:15 PM CDT
- In force
- 3 hr
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 55 counties
Appanoose County, IA, Davis County, IA, Lee County, IA, Monroe County, IA, Van Buren County, IA, Wapello County, IA, Adair County, MO, Audrain County, MO, Barry County, MO, Benton County, MO, Boone County, MO, Callaway County, MO, Camden 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, Greene County, MO, Hickory County, MO, Howard County, MO, Jasper 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, Miller County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Morgan County, MO, Newton County, MO, Osage County, MO, Pettis County, MO, Polk County, MO, Pulaski County, MO, Putnam 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, Sullivan County, MO, Webster County, MO, Wright County, MO
The radar
The Pleasant Hill radar (KEAX), 111 km from the middle of the area, began a volume at 17:42 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, 5.7 hours before the alert went out and 203 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
- 459 J/kg
- Mixed-layer CIN
- -81 J/kg
- Mixed-layer LCL
- 1025 m above ground
- 0-6 km bulk shear
- 23 kt
- 0-1 km storm-relative helicity
- 179 m²/s²
- 0-3 km storm-relative helicity
- 182 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.7
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 |
|---|---|---|---|---|
| Aug 16, 2:35 PM CDT | Mesoscale Discussion | SPC | Benton, Black Hawk, Bremer, Buchanan, Cedar, Clayton and 18 more | 2 hr |
| Aug 16, 2:48 PM CDT | Severe Thunderstorm Watch | SPC | Barton, Bates, Carroll, Cass, Clay, Henry and 8 more | 9 hr |
| Aug 16, 4:47 PM CDT | Mesoscale Discussion | SPC | Barton, Bates, Benton, Cass, Cedar, Dade and 7 more | 88 min |
Nearby
Mesoscale Discussions in Missouri, 2017Mesoscale Discussions in Iowa, 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.