Alert archive / Illinois / Mesoscale Discussions in 2024
Mesoscale Discussion 486
The Storm Prediction Center issued this mesoscale discussion at Apr 18, 2024, 4:48 PM CDT for 4 states. It was in force for 87 min.
The area
The outline as issued.
The facts
- Issued
- Apr 18, 2024, 4:48 PM CDT (21:48 UTC)
- Expired
- Apr 18, 2024, 6:15 PM CDT
- In force
- 87 min
- Issued by
- the Storm Prediction Center
- Concerning
- Severe thunderstorm watch 125
All 41 counties
Alexander County, IL, Edwards County, IL, Franklin County, IL, Gallatin County, IL, Hamilton County, IL, Hardin County, IL, Jackson County, IL, Jefferson County, IL, Johnson County, IL, Lawrence County, IL, Massac County, IL, Pope County, IL, Pulaski County, IL, Richland County, IL, Saline County, IL, Union County, IL, Wabash County, IL, Wayne County, IL, White County, IL, Williamson County, IL, Gibson County, IN, Knox County, IN, Pike County, IN, Posey County, IN, Vanderburgh County, IN, Warrick County, IN, Ballard County, KY, Carlisle County, KY, Crittenden County, KY, Graves County, KY, Henderson County, KY, Hickman County, KY, Livingston County, KY, Lyon County, KY, Marshall County, KY, McCracken County, KY, Union County, KY, Webster County, KY, Mississippi County, MO, New Madrid County, MO, Scott County, MO
The radar
The Paducah radar (KPAH), 57 km from the middle of the area, began a volume at 21:50 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 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 |
|---|---|---|---|---|
| Apr 18, 12:08 PM CDT | Mesoscale Discussion | SPC | Bond, Calhoun, Christian, Clay, Clinton, Effingham and 17 more | 2 hr |
| Apr 18, 12:56 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Bond, Calhoun, Christian, Clay, Clinton and 35 more | 8 hr |
| Apr 18, 3:09 PM CDT | Mesoscale Discussion | SPC | Alexander, Bond, Calhoun, Christian, Clay, Clinton and 28 more | 2 hr |
| Apr 18, 6:12 PM CDT | Mesoscale Discussion | SPC | Bond, Champaign, Christian, Clark, Clay, Clinton and 37 more | 93 min |
| Apr 18, 6:36 PM CDT | Severe Thunderstorm Watch | SPC | Alexander, Clark, Coles, Crawford, Cumberland, Edgar and 21 more | 6 hr |
| Apr 17, 8:31 PM CDT | Mesoscale Discussion | SPC | Andrew, Buchanan, Cass, Clay, Clinton, DeKalb and 4 more | 2 hr |
| Apr 17, 11:41 PM CDT | Severe Thunderstorm Watch | SPC | Andrew, Buchanan, Caldwell, Cass, Clay, Clinton and 7 more | 6 hr |
| Apr 18, 2:00 AM CDT | Mesoscale Discussion | SPC | Cass, Clay, Jackson, Platte | 90 min |
| Apr 18, 3:25 AM CDT | Mesoscale Discussion | SPC | Buchanan, Caldwell, Carroll, Cass, Clay, Clinton and 8 more | 95 min |
Nearby
Mesoscale Discussions in Illinois, 2024Mesoscale Discussions in Kentucky, 2024Mesoscale Discussions in Indiana, 2024Every mesoscale discussion in 2024
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; radar from the NEXRAD Level II archive.