Alert archive / Iowa / Tornado Watches in 2022

Tornado Watch 29

March 5, 20227 counties in Illinois; 21 counties in Iowa; 8 counties in Missouri

The Storm Prediction Center issued this tornado watch at Mar 5, 2022, 6:10 PM CST for 7 counties in Illinois; 21 counties in Iowa; 8 counties in Missouri. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued: Mar 5, 2022, 6:10 PM CST (00:10 UTC)
Expired: Mar 5, 2022, 9:54 PM CST
In force: 4 hr
Issued by: the Storm Prediction Center
Largest hail expected: 1 in
Strongest gust expected: 60 kt

All 36 counties

Benton County, IA, Buchanan County, IA, Cedar County, IA, Clinton County, IA, Delaware 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, Hancock County, IL, Henderson County, IL, McDonough County, IL, Mercer County, IL, Rock Island County, IL, Warren County, IL, Clark County, MO, Knox County, MO, Lewis County, MO, Marion County, MO, Monroe County, MO, Ralls County, MO, Scotland County, MO, Shelby County, MO

The radar

The Quad Cities radar (KDVN), 68 km from the middle of the area, began a volume at 00:09 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: 30%
One or more hailstones of 2 inches or more: 10%
Six or more combined severe hail and wind reports: 80%

Warnings issued inside it

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

Issued	Product	Office	Counties	Lasted
Mar 5, 6:47 PM CST	Tornado Warning	DVN	Jefferson, Keokuk	43 min
Mar 5, 6:48 PM CST	Tornado Warning Tornado observed	DVN	Benton	42 min
Mar 5, 6:55 PM CST	Severe Thunderstorm Warning	DVN	Benton, Iowa, Johnson, Linn	35 min
Mar 5, 7:20 PM CST	Tornado Warning	DVN	Benton, Buchanan, Linn	40 min
Mar 5, 7:26 PM CST	Severe Thunderstorm Warning	DVN	Delaware, Dubuque, Jones, Linn	34 min
Mar 5, 7:30 PM CST	Severe Thunderstorm Warning	DVN	Scotland	45 min
Mar 5, 7:34 PM CST	Severe Thunderstorm Warning	DVN	Benton, Iowa, Johnson, Linn	26 min
Mar 5, 7:40 PM CST	Severe Thunderstorm Warning	DVN	Henry, Jefferson, Lee, Van Buren	50 min
Mar 5, 7:42 PM CST	Tornado Warning	DVN	Buchanan, Delaware	26 min
Mar 5, 7:43 PM CST	Severe Thunderstorm Warning	DVN	Iowa, Johnson, Keokuk, Louisa, Washington	47 min
Mar 5, 7:59 PM CST	Severe Thunderstorm Warning	DVN	Delaware, Dubuque, Jackson, Jones	31 min
Mar 5, 8:02 PM CST	Severe Thunderstorm Warning	DVN	Mercer, Rock Island	43 min
Mar 5, 8:05 PM CST	Severe Thunderstorm Warning	DVN	Lee	40 min
Mar 5, 8:06 PM CST	Severe Thunderstorm Warning	DVN	Benton, Cedar, Linn	39 min
Mar 5, 8:16 PM CST	Severe Thunderstorm Warning	DVN	Henderson	44 min
Mar 5, 8:26 PM CST	Severe Thunderstorm Warning	DVN	Henry, Mercer, Rock Island	49 min
Mar 5, 8:29 PM CST	Severe Thunderstorm Warning	DVN	Dubuque, Jackson, Jones	31 min
Mar 5, 8:30 PM CST	Severe Thunderstorm Warning	DVN	Lee	30 min
Mar 5, 8:35 PM CST	Tornado Warning	DVN	Rock Island	25 min
Mar 5, 8:44 PM CST	Tornado Warning	DVN	Mercer	17 min
Mar 5, 8:52 PM CST	Tornado Warning	DVN	Carroll, Henry, Rock Island, Whiteside	38 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

Davenport, (KDVN), launched 00:00Z, 0.2 hours before the alert went out and 74 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: 39 J/kg
Mixed-layer CIN: -142 J/kg
Mixed-layer LCL: 932 m above ground
0-6 km bulk shear: 78 kt
0-1 km storm-relative helicity: 273 m²/s²
0-3 km storm-relative helicity: 395 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Mar 5, 6:33 PM CST	Mesoscale Discussion	SPC	Adams	87 min
Mar 5, 7:51 PM CST	Mesoscale Discussion	SPC	Adams, Brown, Hancock, Henderson, McDonough, Mercer and 3 more	114 min
Mar 5, 8:09 PM CST	Mesoscale Discussion	SPC	Boone, Bureau, Carroll, Cass, Christian, DeKalb and 26 more	96 min
Mar 5, 8:36 PM CST	Severe Thunderstorm Watch	SPC	Boone, Bureau, Carroll, Champaign, Christian, Coles and 40 more	5 hr
Mar 5, 10:32 PM CST	Mesoscale Discussion	SPC	Cook, DuPage, Grundy, Kane, Kankakee, Kendall and 8 more	88 min
Mar 5, 11:53 PM CST	Mesoscale Discussion	SPC	Edgar, Iroquois, Vermilion	67 min
Mar 5, 7:25 PM CST	Mesoscale Discussion	SPC	Audrain, Barton, Benton, Callaway, Camden, Cedar and 24 more	95 min
Mar 6, 1:06 PM CST	Mesoscale Discussion	SPC	Butler, Dunklin, New Madrid, Pemiscot, Ripley, Stoddard	2 hr
Mar 6, 2:18 PM CST	Tornado Watch	SPC	Butler, Carter, Douglas, Dunklin, Howell, New Madrid and 8 more	6 hr
Mar 6, 5:32 PM CST	Mesoscale Discussion	SPC	Bollinger, Butler, Cape Girardeau, Carter, Howell, Mississippi and 8 more	88 min

Nearby

Tornado Watches in Iowa, 2022 Tornado Watches in Missouri, 2022 Tornado Watches in Illinois, 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.