Alert archive / Missouri / Mesoscale Discussions in 2014
Mesoscale Discussion 1698
The Storm Prediction Center issued this mesoscale discussion at Sep 9, 2014, 5:02 PM CDT for Monroe County, Saint Clair County, Illinois; 11 counties in Missouri. It was in force for 88 min.
The area
The outline as issued.
The facts
- Issued
- Sep 9, 2014, 5:02 PM CDT (22:02 UTC)
- Expired
- Sep 9, 2014, 6:30 PM CDT
- In force
- 88 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
Counties Monroe County, IL, Saint Clair County, IL, Audrain County, MO, City of Saint Louis, MO, Jefferson County, MO, Lincoln County, MO, Monroe County, MO, Montgomery County, MO, Pike County, MO, Ralls County, MO, Saint Charles County, MO, Saint Louis County, MO, Warren County, MO
The radar
The St Louis radar (KLSX), 41 km from the middle of the area, began a volume at 22:05 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
Lincoln, IL (KILX), launched 12:00Z, 10.0 hours before the alert went out and 244 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
- 278 J/kg
- Mixed-layer CIN
- -148 J/kg
- Mixed-layer LCL
- 1161 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 167 m²/s²
- 0-3 km storm-relative helicity
- 173 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 9, 9:44 AM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Cass, Clinton, Greene, Jefferson and 11 more | 2 hr |
| Sep 9, 12:13 PM CDT | Mesoscale Discussion | SPC | Harrison, Mercer, Worth | 62 min |
| Sep 9, 1:25 PM CDT | Mesoscale Discussion | SPC | Benton, Boone, Callaway, Camden, Carter, Christian and 40 more | 2 hr |
| Sep 9, 3:06 PM CDT | Mesoscale Discussion | SPC | Andrew, Atchison, Buchanan, Caldwell, Clinton, Daviess and 8 more | 114 min |
| Sep 9, 3:34 PM CDT | Tornado Watch | SPC | Adair, Andrew, Atchison, Buchanan, Caldwell, Carroll and 15 more | 8 hr |
| Sep 9, 5:06 PM CDT | Mesoscale Discussion | SPC | Andrew, Atchison, Buchanan, DeKalb, Gentry, Holt and 2 more | 54 min |
| Sep 9, 6:45 PM CDT | Mesoscale Discussion | SPC | Andrew, Atchison, Gentry, Grundy, Harrison, Holt and 5 more | 90 min |
Nearby
Mesoscale Discussions in Missouri, 2014Mesoscale Discussions in Illinois, 2014Every mesoscale discussion in 2014
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.