Alert archive / Missouri / Mesoscale Discussions in 2018
Mesoscale Discussion 875
The Storm Prediction Center issued this mesoscale discussion at Jun 25, 2018, 3:23 PM CDT for 18 counties in Illinois; 33 counties in Missouri. It was in force for 97 min.
The area
The outline as issued.
The facts
- Issued
- Jun 25, 2018, 3:23 PM CDT (20:23 UTC)
- Expired
- Jun 25, 2018, 5:00 PM CDT
- In force
- 97 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 60%
All 51 counties
Bond County, IL, Calhoun County, IL, Clinton County, IL, Franklin County, IL, Hamilton County, IL, Jackson County, IL, Jefferson County, IL, Jersey County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Perry County, IL, Randolph County, IL, Saint Clair County, IL, Saline County, IL, Union County, IL, Washington County, IL, Williamson County, IL, Audrain County, MO, Boone County, MO, Callaway County, MO, Cape Girardeau County, MO, City of Saint Louis, MO, Cole County, MO, Cooper County, MO, Crawford County, MO, Dent County, MO, Franklin County, MO, Gasconade County, MO, Howard County, MO, Iron County, MO, Jefferson County, MO, Lincoln County, MO, Madison County, MO, Maries County, MO, Miller County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Osage County, MO, Perry County, MO, Phelps County, MO, Pike County, MO, Ralls County, MO, Randolph County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Warren County, MO, Washington County, MO
The radar
The St Louis radar (KLSX), 55 km from the middle of the area, began a volume at 20:25 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
Lincoln, IL (KILX), launched 12:00Z, 8.4 hours before the alert went out and 270 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
- 1147 m above ground
- 0-6 km bulk shear
- 16 kt
- 0-1 km storm-relative helicity
- 29 m²/s²
- 0-3 km storm-relative helicity
- 39 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 |
|---|---|---|---|---|
| Jun 25, 3:34 AM CDT | Mesoscale Discussion | SPC | Jasper, McDonald, Newton | 86 min |
| Jun 25, 5:14 PM CDT | Mesoscale Discussion | SPC | Atchison, Harrison, Mercer, Nodaway, Worth | 2 hr |
Nearby
Mesoscale Discussions in Missouri, 2018Mesoscale Discussions in Illinois, 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.