Alert archive / Missouri / Tornado Watches in 2010

Tornado Watch 705

October 23, 201022 counties in Iowa; 36 counties in Missouri

The Storm Prediction Center issued this tornado watch at Oct 23, 2010, 3:22 PM CDT for 22 counties in Iowa; 36 counties in Missouri. It was in force for 3 hr.

The area

The outline as issued.

The facts

Issued
Oct 23, 2010, 3:22 PM CDT (20:22 UTC)
Expired
Oct 23, 2010, 6:51 PM CDT
In force
3 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 58 counties

Adams County, IA, Appanoose County, IA, Clarke County, IA, Davis County, IA, Decatur County, IA, Henry County, IA, Jefferson County, IA, Keokuk County, IA, Lee County, IA, Lucas County, IA, Madison County, IA, Mahaska County, IA, Marion County, IA, Monroe County, IA, Ringgold County, IA, Taylor County, IA, Union County, IA, Van Buren County, IA, Wapello County, IA, Warren County, IA, Washington County, IA, Wayne County, IA, Adair County, MO, Andrew County, MO, Buchanan County, MO, Caldwell County, MO, Carroll County, MO, Chariton County, MO, Clark County, MO, Clay County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Howard County, MO, Knox County, MO, Lafayette County, MO, Lewis County, MO, Linn County, MO, Livingston County, MO, Macon County, MO, Marion County, MO, Mercer County, MO, Monroe County, MO, Nodaway County, MO, Platte County, MO, Putnam County, MO, Ralls County, MO, Randolph County, MO, Ray County, MO, Saline County, MO, Schuyler County, MO, Scotland County, MO, Shelby County, MO, Sullivan County, MO, Worth County, MO

The radar

The Pleasant Hill radar (KEAX), 128 km from the middle of the area, began a volume at 20:23 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
40%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
30%
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
30%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

2 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Oct 23, 3:49 PM CDTSevere Thunderstorm WarningDMXAppanoose41 min
Oct 23, 5:18 PM CDTSevere Thunderstorm WarningDMXMonroe30 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.

IssuedProductOfficeCountiesLasted
Oct 23, 2:12 PM CDTMesoscale DiscussionSPCDecatur, Ringgold, Taylor93 min
Oct 23, 5:13 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Cherokee, Clay, Crawford, Dickinson and 15 more62 min
Oct 23, 6:23 PM CDTMesoscale DiscussionSPCAppanoose, Clarke, Davis, Decatur, Jefferson, Keokuk and 11 more67 min
Oct 22, 7:32 PM CDTMesoscale DiscussionSPCChautauqua, Cherokee, Crawford, Elk, Labette, Montgomery and 2 more118 min
Oct 23, 9:28 AM CDTMesoscale DiscussionSPCCherokee92 min

Nearby

Tornado Watches in Missouri, 2010Tornado Watches in Iowa, 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.