Alert archive / Missouri / Mesoscale Discussions in 2014
Mesoscale Discussion 874
The Storm Prediction Center issued this mesoscale discussion at Jun 7, 2014, 9:01 AM CDT for Monroe County, Randolph County, Illinois; 21 counties in Missouri. It was in force for 119 min.
The area
The outline as issued.
The facts
- Issued
- Jun 7, 2014, 9:01 AM CDT (14:01 UTC)
- Expired
- Jun 7, 2014, 11:00 AM CDT
- In force
- 119 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 40%
All 23 counties
Monroe County, IL, Randolph County, IL, City of Saint Louis, MO, Crawford County, MO, Dent County, MO, Douglas County, MO, Franklin County, MO, Iron County, MO, Jefferson County, MO, Laclede County, MO, Madison County, MO, Maries County, MO, Perry County, MO, Phelps County, MO, Pulaski County, MO, Reynolds County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Shannon County, MO, Texas County, MO, Washington County, MO, Wright County, MO
The radar
The St Louis radar (KLSX), 124 km from the middle of the area, began a volume at 14:02 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, 2.0 hours before the alert went out and 227 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
- 1223 J/kg
- Mixed-layer CIN
- -86 J/kg
- Mixed-layer LCL
- 926 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 127 m²/s²
- 0-3 km storm-relative helicity
- 126 m²/s²
- Significant tornado parameter
- 0.6
- Supercell composite
- 4.8
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 |
|---|---|---|---|---|
| Jun 7, 12:25 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Clay, Clinton, Edwards, Fayette and 25 more | 2 hr |
| Jun 7, 2:27 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Clinton, Greene, Jersey, Macoupin and 4 more | 2 hr |
| Jun 7, 4:44 PM CDT | Tornado Watch | SPC | Alexander, Bond, Christian, Clay, Clinton, Cumberland and 37 more | 7 hr |
| Jun 7, 2:44 PM CDT | Severe Thunderstorm Watch | SPC | Butler, Dunklin, Mississippi, New Madrid, Pemiscot, Ripley and 1 more | 6 hr |
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.