Alert archive / Illinois / Tornado Watches in 2010
Tornado Watch 744
The Storm Prediction Center issued this tornado watch at Nov 22, 2010, 11:23 AM CST for 51 counties in Illinois; 9 counties in Iowa; 9 counties in Missouri. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Nov 22, 2010, 11:23 AM CST (17:23 UTC)
- Expired
- Nov 22, 2010, 6:00 PM CST
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 69 counties
Cedar County, IA, Clinton County, IA, Des Moines County, IA, Henry County, IA, Jackson County, IA, Lee County, IA, Louisa County, IA, Muscatine County, IA, Scott County, IA, Adams County, IL, Boone County, IL, Brown County, IL, Bureau County, IL, Carroll County, IL, Cass County, IL, Cook County, IL, DeKalb County, IL, DuPage County, IL, Ford County, IL, Fulton County, IL, Greene County, IL, Grundy County, IL, Hancock County, IL, Henderson County, IL, Henry County, IL, Iroquois County, IL, Jo Daviess County, IL, Kane County, IL, Kankakee County, IL, Kendall County, IL, Knox County, IL, Lake County, IL, LaSalle County, IL, Lee County, IL, Livingston County, IL, Logan County, IL, Marshall County, IL, Mason County, IL, McDonough County, IL, McHenry 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, Will County, IL, Winnebago County, IL, Woodford County, IL, Audrain County, MO, Clark County, MO, Knox County, MO, Lewis County, MO, Marion County, MO, Monroe County, MO, Pike County, MO, Ralls County, MO, Shelby County, MO
The radar
The Quad Cities radar (KDVN), 54 km from the middle of the area, began a volume at 17:25 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
- 50%
- One or more EF2 to EF5 tornadoes
- 30%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
31 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 22, 11:57 AM CST | Severe Thunderstorm Warning | DVN | Hancock, Henderson | 33 min |
| Nov 22, 12:26 PM CST | Severe Thunderstorm Warning | DVN | Hancock, Henderson | 34 min |
| Nov 22, 12:29 PM CST | Severe Thunderstorm Warning | DVN | Henderson, Warren | 31 min |
| Nov 22, 12:56 PM CST | Severe Thunderstorm Warning | ILX | Knox | 33 min |
| Nov 22, 1:12 PM CST | Severe Thunderstorm Warning | DVN | Jo Daviess | 13 min |
| Nov 22, 1:50 PM CST | Severe Thunderstorm Warning | DVN | Bureau, Henry | 25 min |
| Nov 22, 1:50 PM CST | Severe Thunderstorm Warning | ILX | Knox | 25 min |
| Nov 22, 1:51 PM CST | Severe Thunderstorm Warning | LSX | Pike | 24 min |
| Nov 22, 2:06 PM CST | Severe Thunderstorm Warning | DVN | Bureau, Henry | 23 min |
| Nov 22, 2:06 PM CST | Severe Thunderstorm Warning | LOT | LaSalle, Lee | 24 min |
| Nov 22, 2:10 PM CST | Severe Thunderstorm Warning | ILX | Stark | 35 min |
| Nov 22, 2:16 PM CST | Severe Thunderstorm Warning | LOT | Boone, Ogle, Winnebago | 44 min |
| Nov 22, 2:19 PM CST | Tornado Warning | DVN | Bureau, Henry | 26 min |
| Nov 22, 2:21 PM CST | Tornado Warning | ILX | Stark | 24 min |
| Nov 22, 2:28 PM CST | Severe Thunderstorm Warning | ILX | Cass, Menard, Morgan | 47 min |
| Nov 22, 2:30 PM CST | Severe Thunderstorm Warning | LOT | DeKalb, LaSalle, Lee | 30 min |
| Nov 22, 2:32 PM CST | Severe Thunderstorm Warning | DVN | Bureau | 13 min |
| Nov 22, 2:32 PM CST | Severe Thunderstorm Warning | ILX | Knox, Stark | 43 min |
| Nov 22, 2:51 PM CST | Severe Thunderstorm Warning | ILX | Fulton, Knox, Peoria | 39 min |
| Nov 22, 2:59 PM CST | Severe Thunderstorm Warning | ILX | Marshall, Stark | 16 min |
| Nov 22, 3:01 PM CST | Severe Thunderstorm Warning | LOT | DeKalb, Kane, LaSalle, Lee | 29 min |
| Nov 22, 3:03 PM CST | Tornado Warning | LOT | Boone, McHenry, Winnebago | 27 min |
| Nov 22, 3:15 PM CST | Severe Thunderstorm Warning | LOT | LaSalle | 30 min |
| Nov 22, 3:19 PM CST | Severe Thunderstorm Warning | ILX | Peoria, Tazewell, Woodford | 26 min |
| Nov 22, 3:23 PM CST | Tornado Warning | LOT | DeKalb, Kane | 22 min |
| Nov 22, 3:30 PM CST | Tornado Warning | LOT | McHenry | 15 min |
| Nov 22, 3:37 PM CST | Severe Thunderstorm Warning | LOT | DeKalb, DuPage, Grundy, Kane, Kendall, LaSalle and 2 more | 38 min |
| Nov 22, 3:49 PM CST | Severe Thunderstorm Warning | LOT | Cook, DuPage, Kane | 26 min |
| Nov 22, 4:12 PM CST | Severe Thunderstorm Warning | LOT | Cook, DuPage, Grundy, Kane, Kendall, Lake and 2 more | 48 min |
| Nov 22, 4:18 PM CST | Flash Flood Warning | LOT | Cook | 6 hr |
| Nov 22, 5:37 PM CST | Severe Thunderstorm Warning | LSX | Calhoun, Greene, Jersey, Macoupin, Madison | 38 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 |
|---|---|---|---|---|
| Nov 22, 10:50 AM CST | Mesoscale Discussion | SPC | Adams, Brown, Bureau, Fulton, Hancock, Henderson and 14 more | 85 min |
| Nov 22, 2:10 PM CST | Mesoscale Discussion | SPC | Adams, Boone, Brown, Bureau, Carroll, Cass and 38 more | 95 min |
| Nov 22, 4:50 PM CST | Tornado Watch | SPC | Bond, Calhoun, Champaign, Christian, Clark, Clay and 26 more | 7 hr |
| Nov 22, 5:13 PM CST | Tornado Watch | SPC | Ford, Iroquois, Kankakee, Livingston | 4 hr |
| Nov 22, 2:32 AM CST | Mesoscale Discussion | SPC | Cerro Gordo, Hancock, Humboldt, Kossuth, Mitchell, Winnebago and 2 more | 6 hr |
| Nov 22, 3:19 PM CST | Mesoscale Discussion | SPC | Barry, Christian, Dade, Dallas, Douglas, Greene and 11 more | 86 min |
Nearby
Tornado Watches in Illinois, 2010Tornado Watches in Iowa, 2010Tornado Watches in Missouri, 2010Every tornado watch in 2010
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.