Alert archive / Illinois / Mesoscale Discussions in 2014
Mesoscale Discussion 1795
The Storm Prediction Center issued this mesoscale discussion at Oct 2, 2014, 11:59 AM CDT for Clay County, Randolph County, Arkansas; 39 counties in Illinois; 23 counties in Missouri. It was in force for 91 min.
The area
The outline as issued.
The facts
- Issued
- Oct 2, 2014, 11:59 AM CDT (16:59 UTC)
- Expired
- Oct 2, 2014, 1:30 PM CDT
- In force
- 91 min
- Issued by
- the Storm Prediction Center
- Chance of a watch
- 60%
All 64 counties
Clay County, AR, Randolph County, AR, Alexander County, IL, Bond County, IL, Christian County, IL, Clark County, IL, Clay County, IL, Clinton County, IL, Coles County, IL, Crawford County, IL, Cumberland County, IL, Douglas County, IL, Edgar County, IL, Edwards County, IL, Effingham County, IL, Fayette County, IL, Franklin County, IL, Hamilton County, IL, Jackson County, IL, Jasper County, IL, Jefferson County, IL, Johnson County, IL, Lawrence County, IL, Macoupin County, IL, Madison County, IL, Marion County, IL, Monroe County, IL, Montgomery County, IL, Moultrie County, IL, Perry County, IL, Pulaski County, IL, Randolph County, IL, Richland County, IL, Saint Clair County, IL, Saline County, IL, Shelby County, IL, Union County, IL, Washington County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Bollinger County, MO, Butler County, MO, Cape Girardeau County, MO, Carter County, MO, City of Saint Louis, MO, Crawford County, MO, Dent County, MO, Iron County, MO, Jefferson County, MO, Madison County, MO, Oregon County, MO, Perry County, MO, Reynolds County, MO, Ripley County, MO, Saint Charles County, MO, Saint Francois County, MO, Saint Louis County, MO, Sainte Genevieve County, MO, Scott County, MO, Shannon County, MO, Stoddard County, MO, Washington County, MO, Wayne County, MO
The radar
The St Louis radar (KLSX), 108 km from the middle of the area, began a volume at 16:59 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
Lincoln, IL (KILX), launched 12:00Z, 5.0 hours before the alert went out and 257 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
- 1094 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 175 m²/s²
- 0-3 km storm-relative helicity
- 265 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 |
|---|---|---|---|---|
| Oct 2, 12:20 PM CDT | Severe Thunderstorm Watch | SPC | Baxter, Benton, Boone, Carroll, Crawford, Franklin and 11 more | 8 hr |
| Oct 2, 1:57 PM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Desha and 4 more | 93 min |
| Oct 2, 3:16 PM CDT | Mesoscale Discussion | SPC | Benton, Boone, Carroll, Crawford, Franklin, Johnson and 7 more | 59 min |
| Oct 2, 5:25 PM CDT | Mesoscale Discussion | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 50 more | 95 min |
| Oct 2, 5:48 PM CDT | Tornado Watch | SPC | Arkansas, Ashley, Bradley, Calhoun, Chicot, Clark and 52 more | 8 hr |
| Oct 2, 2:33 AM CDT | Mesoscale Discussion | SPC | Adams, Brown, Calhoun, Cass, Greene, Jersey and 6 more | 117 min |
| Oct 2, 1:22 PM CDT | Severe Thunderstorm Watch | SPC | Bond, Clark, Clay, Clinton, Crawford, Cumberland and 24 more | 10 hr |
| Oct 2, 3:14 PM CDT | Mesoscale Discussion | SPC | Bond, Clark, Clay, Clinton, Crawford, Cumberland and 24 more | 91 min |
| Oct 2, 6:00 PM CDT | Mesoscale Discussion | SPC | Bond, Clark, Clay, Clinton, Crawford, Cumberland and 24 more | 90 min |
| Oct 1, 9:20 PM CDT | Mesoscale Discussion | SPC | Bates, Benton, Carroll, Cass, Clay, Cooper and 11 more | 25 min |
| Oct 1, 9:52 PM CDT | Severe Thunderstorm Watch | SPC | Bates, Benton, Caldwell, Carroll, Cass, Chariton and 18 more | 6 hr |
| Oct 1, 11:55 PM CDT | Mesoscale Discussion | SPC | Bates, Benton, Caldwell, Carroll, Cass, Chariton and 18 more | 95 min |
| Oct 2, 6:59 AM CDT | Mesoscale Discussion | SPC | Andrew, Atchison, Buchanan, Clinton, Daviess, DeKalb and 5 more | 61 min |
Nearby
Mesoscale Discussions in Illinois, 2014Mesoscale Discussions in Missouri, 2014Mesoscale Discussions in Arkansas, 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.