Alert archive / Iowa / Tornado Watches in 2022

Tornado Watch 345

June 11, 20224 states

The Storm Prediction Center issued this tornado watch at Jun 11, 2022, 3:37 PM CDT for 4 states. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued: Jun 11, 2022, 3:37 PM CDT (20:37 UTC)
Expired: Jun 11, 2022, 10:00 PM CDT
In force: 6 hr
Issued by: the Storm Prediction Center
Largest hail expected: 3 in
Strongest gust expected: 60 kt

All 66 counties

Adair County, IA, Adams County, IA, Audubon County, IA, Carroll County, IA, Cass County, IA, Clarke County, IA, Crawford County, IA, Dallas County, IA, Decatur County, IA, Fremont County, IA, Greene County, IA, Guthrie County, IA, Harrison County, IA, Madison County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, Page County, IA, Pottawattamie County, IA, Ringgold County, IA, Shelby County, IA, Taylor County, IA, Union County, IA, Atchison County, KS, Brown County, KS, Doniphan County, KS, Marshall County, KS, Nemaha County, KS, Andrew County, MO, Atchison County, MO, Buchanan County, MO, Caldwell County, MO, Clinton County, MO, Daviess County, MO, DeKalb County, MO, Gentry County, MO, Grundy County, MO, Harrison County, MO, Holt County, MO, Livingston County, MO, Mercer County, MO, Nodaway County, MO, Worth County, MO, Burt County, NE, Butler County, NE, Cass County, NE, Colfax County, NE, Cuming County, NE, Dodge County, NE, Douglas County, NE, Gage County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Nemaha County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Stanton County, NE, Thurston County, NE, Washington County, NE, Wayne County, NE

The radar

The Omaha radar (KOAX), 113 km from the middle of the area, began a volume at 20:36 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: 60%
One or more gusts of 65 knots or more: 20%
Ten or more severe hail reports: 60%
One or more hailstones of 2 inches or more: 60%
Six or more combined severe hail and wind reports: 95%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Jun 11, 3:52 PM CDT	Severe Thunderstorm Warning	OAX	Lancaster, Saline, Seward	38 min
Jun 11, 3:59 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Lancaster, Saline	46 min
Jun 11, 4:03 PM CDT	Severe Thunderstorm Warning	OAX	Gage, Jefferson, Johnson, Saline	42 min
Jun 11, 4:04 PM CDT	Severe Thunderstorm Warning	OAX	Dodge, Douglas, Saunders, Washington	41 min
Jun 11, 4:13 PM CDT	Severe Thunderstorm Warning	OAX	Burt, Cuming, Dodge, Washington	62 min
Jun 11, 4:25 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	Saline, Seward	50 min
Jun 11, 4:32 PM CDT	Tornado Warning	OAX	Gage, Jefferson, Lancaster, Saline	43 min
Jun 11, 4:38 PM CDT	Severe Thunderstorm Warning Considerable damage threat	OAX	Gage, Johnson, Nemaha, Pawnee, Richardson	24 min
Jun 11, 4:38 PM CDT	Severe Thunderstorm Warning	OAX	Douglas, Sarpy, Saunders	52 min
Jun 11, 4:42 PM CDT	Tornado Warning	OAX	Gage, Pawnee	48 min
Jun 11, 4:44 PM CDT	Tornado Warning	OAX	Gage, Lancaster, Saline	46 min
Jun 11, 4:45 PM CDT	Severe Thunderstorm Warning	DMX	Boone, Greene, Webster	45 min
Jun 11, 5:06 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Sarpy, Saunders	39 min
Jun 11, 5:08 PM CDT	Severe Thunderstorm Warning	OAX	Harrison, Pottawattamie	52 min
Jun 11, 5:09 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	Marshall	51 min
Jun 11, 5:09 PM CDT	Tornado Warning	OAX	Gage, Pawnee	51 min
Jun 11, 5:13 PM CDT	Tornado Warning	OAX	Gage, Jefferson, Saline	32 min
Jun 11, 5:25 PM CDT	Severe Thunderstorm Warning	OAX	Mills, Pottawattamie	65 min
Jun 11, 5:28 PM CDT	Tornado Warning	TOP	Marshall	32 min
Jun 11, 5:36 PM CDT	Flash Flood Warning	OAX	Gage	4 hr
Jun 11, 5:36 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Otoe	54 min
Jun 11, 5:37 PM CDT	Tornado Warning	TOP	Marshall	23 min
Jun 11, 5:51 PM CDT	Severe Thunderstorm Warning	OAX	Gage	24 min
Jun 11, 5:57 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	Marshall, Washington	33 min
Jun 11, 6:00 PM CDT	Tornado Warning Tornado observed	TOP	Marshall	30 min
Jun 11, 6:07 PM CDT	Severe Thunderstorm Warning	OAX	Fremont, Mills	38 min
Jun 11, 6:12 PM CDT	Severe Thunderstorm Warning	OAX	Cass, Johnson, Nemaha, Otoe	48 min
Jun 11, 6:23 PM CDT	Tornado Warning Tornado observed	TOP	Marshall, Pottawatomie, Riley	37 min
Jun 11, 6:27 PM CDT	Severe Thunderstorm Warning Considerable damage threat	TOP	Marshall, Pottawatomie, Riley, Washington	48 min
Jun 11, 6:39 PM CDT	Severe Thunderstorm Warning	OAX	Fremont	51 min
Jun 11, 6:50 PM CDT	Tornado Warning	OAX	Johnson	23 min
Jun 11, 6:58 PM CDT	Severe Thunderstorm Warning	OAX	Johnson, Nemaha, Pawnee, Richardson	32 min
Jun 11, 7:42 PM CDT	Severe Thunderstorm Warning	EAX	Gentry, Harrison, Worth	48 min
Jun 11, 8:21 PM CDT	Severe Thunderstorm Warning	EAX	Grundy, Harrison, Mercer	39 min
Jun 11, 8:56 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, DeKalb, Gentry, Nodaway	34 min
Jun 11, 9:15 PM CDT	Tornado Warning	EAX	Andrew, DeKalb	15 min
Jun 11, 9:28 PM CDT	Severe Thunderstorm Warning	EAX	Andrew, Buchanan, Clinton, DeKalb	32 min
Jun 11, 9:36 PM CDT	Tornado Warning	EAX	Andrew, Buchanan, DeKalb	24 min
Jun 11, 9:54 PM CDT	Tornado Warning	EAX	Buchanan, Clinton, DeKalb	36 min
Jun 11, 10:00 PM CDT	Severe Thunderstorm Warning	EAX	Buchanan, Clinton, DeKalb	30 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Omaha, NE (KOAX), launched 12:00Z, 8.6 hours before the alert went out and 113 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1717 m above ground
0-6 km bulk shear: 64 kt
0-1 km storm-relative helicity: 165 m²/s²
0-3 km storm-relative helicity: 243 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 11, 2:59 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Audubon, Cass, Crawford, Decatur and 13 more	91 min
Jun 11, 5:14 PM CDT	Mesoscale Discussion	SPC	Allen, Anderson, Atchison, Bourbon, Brown, Chase and 28 more	3 hr
Jun 11, 5:31 PM CDT	Severe Thunderstorm Watch	SPC	Anderson, Clay, Coffey, Dickinson, Douglas, Franklin and 16 more	7 hr

Nearby

Tornado Watches in Iowa, 2022 Tornado Watches in Nebraska, 2022 Tornado Watches in Missouri, 2022 Every tornado watch in 2022

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.