Alert archive / Illinois / Severe Thunderstorm Watches in 2008
Severe Thunderstorm Watch 231
The Storm Prediction Center issued this severe thunderstorm watch at Apr 25, 2008, 1:27 PM CDT for 44 counties in Illinois; 18 counties in Iowa; 26 counties in Missouri. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 25, 2008, 1:27 PM CDT (18:27 UTC)
- Expired
- Apr 25, 2008, 8:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 88 counties
Cedar County, IA, Clinton County, IA, Des Moines County, IA, Dubuque County, IA, Henry County, IA, Iowa County, IA, Jackson County, IA, Jefferson County, IA, Johnson County, IA, Jones County, IA, Keokuk County, IA, Lee County, IA, Linn County, IA, Louisa County, IA, Muscatine County, IA, Scott County, IA, Van Buren County, IA, Washington County, IA, Adams County, IL, Boone County, IL, Brown County, IL, Bureau County, IL, Calhoun County, IL, Carroll County, IL, Cass County, IL, DeKalb County, IL, Fulton County, IL, Greene County, IL, Hancock County, IL, Henderson County, IL, Henry County, IL, Jersey County, IL, Jo Daviess County, IL, Knox County, IL, LaSalle County, IL, Lee County, IL, Livingston County, IL, Logan County, IL, Macoupin County, IL, Madison County, IL, Marshall County, IL, Mason County, IL, McDonough County, IL, McLean County, IL, Menard County, IL, Mercer County, IL, Morgan County, IL, Ogle County, IL, Peoria County, IL, Pike County, IL, Putnam County, IL, Rock Island County, IL, Sangamon County, IL, Schuyler County, IL, Scott County, IL, Stark County, IL, Stephenson County, IL, Tazewell County, IL, Warren County, IL, Whiteside County, IL, Winnebago County, IL, Woodford County, IL, Audrain County, MO, Boone County, MO, Callaway County, MO, City of Saint Louis, MO, Clark County, MO, Cole County, MO, Crawford County, MO, Franklin County, MO, Gasconade County, MO, Jefferson County, MO, Knox County, MO, Lewis County, MO, Lincoln County, MO, Marion County, MO, Moniteau County, MO, Monroe County, MO, Montgomery County, MO, Osage County, MO, Pike County, MO, Ralls County, MO, Saint Charles County, MO, Saint Louis County, MO, Scotland County, MO, Shelby County, MO, Warren County, MO, Washington County, MO
The radar
The Quad Cities radar (KDVN), 71 km from the middle of the area, began a volume at 18:30 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.
What SPC expected
The probabilities SPC published with the watch, for the watch area over its life.
- Two or more tornadoes
- 20%
- One or more EF2 to EF5 tornadoes
- 10%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
44 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 1:42 PM CDT | Severe Thunderstorm Warning | DVN | Benton, Buchanan, Delaware, Dubuque, Linn | 63 min |
| Apr 25, 2:26 PM CDT | Severe Thunderstorm Warning | DVN | Delaware, Dubuque, Jones, Linn | 39 min |
| Apr 25, 2:31 PM CDT | Severe Thunderstorm Warning | DVN | Cedar, Henry, Johnson, Keokuk, Louisa, Muscatine and 1 more | 59 min |
| Apr 25, 2:51 PM CDT | Tornado Warning | DVN | Henry, Jefferson, Louisa, Washington | 39 min |
| Apr 25, 2:54 PM CDT | Severe Thunderstorm Warning | DVN | Hancock | 47 min |
| Apr 25, 2:55 PM CDT | Severe Thunderstorm Warning | LSX | Audrain, Monroe, Ralls | 50 min |
| Apr 25, 3:01 PM CDT | Tornado Warning | DVN | Cedar, Johnson, Louisa, Muscatine, Washington | 44 min |
| Apr 25, 3:01 PM CDT | Severe Thunderstorm Warning | LSX | Marion, Monroe, Ralls | 44 min |
| Apr 25, 3:25 PM CDT | Tornado Warning | DVN | Mercer, Rock Island | 65 min |
| Apr 25, 3:34 PM CDT | Tornado Warning | DVN | Cedar, Clinton, Muscatine, Scott | 41 min |
| Apr 25, 3:38 PM CDT | Severe Thunderstorm Warning | LSX | Gasconade, Osage | 52 min |
| Apr 25, 3:41 PM CDT | Severe Thunderstorm Warning | DVN | Carroll | 64 min |
| Apr 25, 3:43 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Pike | 32 min |
| Apr 25, 4:07 PM CDT | Tornado Warning | DVN | Carroll, Whiteside | 38 min |
| Apr 25, 4:09 PM CDT | Severe Thunderstorm Warning | LOT | Ogle, Winnebago | 36 min |
| Apr 25, 4:11 PM CDT | Severe Thunderstorm Warning | LSX | Adams, Brown, Pike | 34 min |
| Apr 25, 4:15 PM CDT | Severe Thunderstorm Warning | LSX | Pike | 30 min |
| Apr 25, 4:17 PM CDT | Severe Thunderstorm Warning | LOT | Grundy, LaSalle, Livingston | 58 min |
| Apr 25, 4:19 PM CDT | Tornado Warning | DVN | Rock Island | 41 min |
| Apr 25, 4:26 PM CDT | Severe Thunderstorm Warning | LOT | Boone, McHenry | 32 min |
| Apr 25, 4:27 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess, Stephenson | 63 min |
| Apr 25, 4:37 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Mason, Morgan, Schuyler, Scott | 38 min |
| Apr 25, 4:46 PM CDT | Severe Thunderstorm Warning | LSX | Brown, Pike | 19 min |
| Apr 25, 4:56 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Gasconade, Warren | 34 min |
| Apr 25, 5:06 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Montgomery, Pike | 24 min |
| Apr 25, 5:14 PM CDT | Severe Thunderstorm Warning | ILX | Cass, Mason, Morgan, Scott | 46 min |
| Apr 25, 5:16 PM CDT | Severe Thunderstorm Warning | DVN | Carroll, Jo Daviess, Stephenson | 35 min |
| Apr 25, 5:27 PM CDT | Severe Thunderstorm Warning | LSX | Lincoln, Montgomery, Pike | 24 min |
| Apr 25, 5:30 PM CDT | Severe Thunderstorm Warning | ILX | Mason | 32 min |
| Apr 25, 5:36 PM CDT | Severe Thunderstorm Warning | DVN | Jo Daviess | 24 min |
| Apr 25, 5:37 PM CDT | Severe Thunderstorm Warning | LOT | DeKalb, LaSalle | 15 min |
| Apr 25, 5:38 PM CDT | Severe Thunderstorm Warning | LOT | DeKalb, Lee, Ogle | 37 min |
| Apr 25, 5:38 PM CDT | Severe Thunderstorm Warning | LSX | Franklin, Saint Charles, Saint Louis, Warren, City of Saint Louis | 52 min |
| Apr 25, 5:59 PM CDT | Severe Thunderstorm Warning | ILX | Morgan, Sangamon | 46 min |
| Apr 25, 6:09 PM CDT | Severe Thunderstorm Warning | LSX | Jersey | 24 min |
| Apr 25, 6:31 PM CDT | Severe Thunderstorm Warning | LSX | Macoupin, Madison | 44 min |
| Apr 25, 6:34 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Saint Louis, City of Saint Louis | 41 min |
| Apr 25, 6:37 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Logan | 38 min |
| Apr 25, 6:45 PM CDT | Severe Thunderstorm Warning | ILX | DeWitt, Logan, Macon, Sangamon | 30 min |
| Apr 25, 6:51 PM CDT | Tornado Warning | ILX | DeWitt, Logan | 15 min |
| Apr 25, 6:57 PM CDT | Severe Thunderstorm Warning | LSX | Jefferson, Sainte Genevieve, Saint Francois | 48 min |
| Apr 25, 7:10 PM CDT | Severe Thunderstorm Warning | LSX | Fayette, Macoupin, Montgomery | 50 min |
| Apr 25, 7:14 PM CDT | Severe Thunderstorm Warning | ILX | Christian, Logan, Macon, Sangamon | 27 min |
| Apr 25, 7:15 PM CDT | Severe Thunderstorm Warning | LSX | Bond, Clinton, Madison, Montgomery, Saint Clair | 45 min |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 4:22 AM CDT | Mesoscale Discussion | SPC | Henderson, Mercer, Rock Island | 23 min |
| Apr 25, 4:51 AM CDT | Severe Thunderstorm Watch | SPC | Adams, Brown, Carroll, Hancock, Henderson, Henry and 8 more | 5 hr |
| Apr 25, 9:10 AM CDT | Mesoscale Discussion | SPC | Boone, Carroll, Jo Daviess, Lee, Ogle, Rock Island and 3 more | 65 min |
| Apr 25, 12:21 PM CDT | Mesoscale Discussion | SPC | Adams, Brown, Carroll, Fulton, Hancock, Henderson and 10 more | 54 min |
| Apr 25, 3:28 PM CDT | Mesoscale Discussion | SPC | Bureau, Carroll, Henry, Jo Daviess, Knox, Lee and 7 more | 62 min |
| Apr 25, 3:41 PM CDT | Tornado Watch | SPC | Boone, Bureau, Carroll, Cass, DeKalb, Fulton and 34 more | 4 hr |
| Apr 25, 5:18 PM CDT | Mesoscale Discussion | SPC | Bureau, Carroll, Henry, Jo Daviess, Knox, Lee and 7 more | 57 min |
| Apr 25, 6:01 PM CDT | Mesoscale Discussion | SPC | Bureau, Carroll, Henry, Jo Daviess, Knox, Lee and 7 more | 59 min |
| Apr 25, 12:07 AM CDT | Severe Thunderstorm Watch | SPC | Adair, Adams, Cass, Clarke, Dallas, Decatur and 15 more | 7 hr |
| Apr 25, 12:55 AM CDT | Mesoscale Discussion | SPC | Page | 35 min |
| Apr 25, 1:13 AM CDT | Tornado Watch | SPC | Fremont, Montgomery, Page | 5 hr |
| Apr 25, 2:24 AM CDT | Mesoscale Discussion | SPC | Adair, Adams, Cass, Clarke, Dallas, Decatur and 14 more | 66 min |
| Apr 25, 3:18 AM CDT | Mesoscale Discussion | SPC | Fremont, Montgomery, Page | 57 min |
| Apr 25, 6:38 AM CDT | Mesoscale Discussion | SPC | Barton, Bates, Benton, Cass, Cedar, Clay and 16 more | 67 min |
| Apr 25, 2:15 PM CDT | Mesoscale Discussion | SPC | Barry, Camden, Christian, Dallas, Dent, Douglas and 13 more | 90 min |
| Apr 25, 6:40 PM CDT | Mesoscale Discussion | SPC | Butler, Carter, Oregon, Reynolds, Ripley, Shannon and 1 more | 65 min |
Nearby
Severe Thunderstorm Watches in Illinois, 2008Severe Thunderstorm Watches in Missouri, 2008Severe Thunderstorm Watches in Iowa, 2008Every severe thunderstorm watch in 2008
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.