Alert archive / Iowa / Severe Thunderstorm Warnings in 2022

Severe Thunderstorm Warning 83, NWS Des Moines, IA

June 6, 20227 counties in Iowa

NWS Des Moines, IA issued this severe thunderstorm warning at Jun 6, 2022, 1:46 PM CDT for 7 counties in Iowa. It was in force for 44 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Jun 6, 2022, 1:46 PM CDT (18:46 UTC)
Expired: Jun 6, 2022, 2:30 PM CDT
In force: 44 min
Issued by: NWS Des Moines, IA
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Clarke County, IA, Decatur County, IA, Lucas County, IA, Marion County, IA, Monroe County, IA, Warren County, IA, Wayne County, IA

The radar

The Des Moines radar (KDMX), 82 km from the middle of the area, began a volume at 18:49 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.

The nearest sounding before it

Davenport, (KDVN), launched 12:00Z, 6.8 hours before the alert went out and 250 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: 142 J/kg
Mixed-layer CIN: -78 J/kg
Mixed-layer LCL: 1059 m above ground
0-6 km bulk shear: 28 kt
0-1 km storm-relative helicity: 147 m²/s²
0-3 km storm-relative helicity: 144 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.3

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Des Moines, IA wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 6, 12:43 PM CDT, 1 hour 3 minutes earlier.

Area forecast discussion, Jun 6, 12:43 PM CDT, 1 hour 3 minutes before

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Hazardous weather outlook, Jun 6, 3:58 AM CDT, 9 hours 48 minutes before

Hazardous Weather Outlook
National Weather Service Des Moines IA
358 AM CDT Mon Jun 6 2022

IAZ004>007-015>017-023>028-033>039-044>046-048>050-057-060>062-
070>075-081>086-092>097-070900-
Emmet-Kossuth-Winnebago-Worth-Palo Alto-Hancock-Cerro Gordo-
Pocahontas-Humboldt-Wright-Franklin-Butler-Bremer-Sac-Calhoun-
Webster-Hamilton-Hardin-Grundy-Black Hawk-Crawford-Carroll-Greene-
Story-Marshall-Tama-Audubon-Polk-Jasper-Poweshiek-Cass-Adair-
Madison-Warren-Marion-Mahaska-Adams-Union-Clarke-Lucas-Monroe-
Wapello-Taylor-Ringgold-Decatur-Wayne-Appanoose-Davis-
358 AM CDT Mon Jun 6 2022

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...Today and tonight

Additional showers and thunderstorms are expected through the
afternoon, though severe weather is not anticipated.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Multiple chances for showers and storms are expected this week.
Tuesday afternoon and evening currently has the potential for
strong storms. Locally heavy rainfall may be possible at times.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not needed.

IAZ047-058-059-070900-
Boone-Guthrie-Dallas-
358 AM CDT Mon Jun 6 2022

This Hazardous Weather Outlook is for portions of central Iowa.

.DAY ONE...Today and tonight

A Flood Warning is in effect for part of the area this morning.
Please refer to weather.gov/desmoines for additional information.

Additional showers and thunderstorms are expected through the
afternoon, though severe weather is not anticipated.

.DAYS TWO THROUGH SEVEN...Tuesday through Sunday

Multiple chances for showers and storms are expected this week.
Tuesday afternoon and evening currently has the potential for
strong storms. Locally heavy rainfall may be possible at times.

.SPOTTER INFORMATION STATEMENT...

Spotter activation is not needed.

Bury

In the hours before

Special weather statement, Jun 6, 11:14 AM CDT, 2 hours 32 minutes before

Special Weather Statement
National Weather Service Des Moines IA
1114 AM CDT Mon Jun 6 2022

IAZ057-058-061645-
Guthrie IA-Audubon IA-
1114 AM CDT Mon Jun 6 2022

...A strong thunderstorm will impact portions of western Guthrie and
northeastern Audubon Counties through 1145 AM CDT...

At 1114 AM CDT, Doppler radar was tracking a strong thunderstorm 7
miles southwest of Coon Rapids, or 9 miles northeast of Audubon,
moving east at 20 mph.

HAZARD...Wind gusts up to 50 mph and nickel size hail and additional
         heavy rainfall of one to two inches.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible. Ponding of ponding of water on roadways, low
         visibilities, and rises in small streams and creeks.

Locations impacted include...
  Guthrie Center and Lake Panorama.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4172 9489 4186 9482 4186 9440 4152 9451
TIME...MOT...LOC 1614Z 288DEG 16KT 4179 9478

MAX HAIL SIZE...0.88 IN
MAX WIND GUST...50 MPH

Hahn

Special weather statement, Jun 6, 11:45 AM CDT, 2 hours 1 minute before

Special Weather Statement
National Weather Service Des Moines IA
1145 AM CDT Mon Jun 6 2022

IAZ058-059-071-061715-
Guthrie IA-Adair IA-Dallas IA-
1145 AM CDT Mon Jun 6 2022

...A strong thunderstorm will impact portions of Guthrie,
southwestern Dallas and northeastern Adair Counties through 1215 PM
CDT...

At 1144 AM CDT, Doppler radar was tracking a strong thunderstorm over
Guthrie Center, moving east at 30 mph.

HAZARD...Wind gusts up to 50 mph and penny size hail and additional
         rainfall up to one inch.

SOURCE...Radar indicated.

IMPACT...Gusty winds could knock down tree limbs and blow around
         unsecured objects. Minor damage to outdoor objects is
         possible. Ponding of ponding of water on roadways, low
         visibilities, and rises in small streams and creeks.

This strong thunderstorm will be near...
  Lake Panorama around 1150 AM CDT.
  Panora around 1200 PM CDT.

Other locations in the path of this storm include Stuart.

This includes Interstate 80 between mile markers 80 and 97.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

If outdoors, consider seeking shelter inside a building.

&&

LAT...LON 4183 9458 4171 9421 4155 9418 4150 9421
      4150 9424 4146 9424 4131 9435 4158 9470
      4160 9470 4161 9474
TIME...MOT...LOC 1644Z 288DEG 24KT 4167 9453

MAX HAIL SIZE...0.75 IN
MAX WIND GUST...50 MPH

Hahn

Special weather statement, Jun 6, 12:14 PM CDT, 1 hour 32 minutes before

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Special weather statement, Jun 6, 12:44 PM CDT, 1 hour 2 minutes before

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Local storm report, Jun 6, 1:00 PM CDT, 46 minutes before

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Special weather statement, Jun 6, 1:16 PM CDT, 30 minutes before

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The office that day

Everything else NWS Des Moines, IA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 5, 7:17 PM CDT	Special Weather Statement	DMX	Dallas	43 min
Jun 5, 8:42 PM CDT	Areal Flood Warning	DMX	Boone, Dallas, Guthrie, Polk	18 hr
Jun 6, 10:50 AM CDT	Special Weather Statement	DMX	Audubon	25 min
Jun 6, 11:14 AM CDT	Special Weather Statement	DMX	Guthrie	31 min
Jun 6, 11:45 AM CDT	Special Weather Statement	DMX	Guthrie	30 min
Jun 6, 12:14 PM CDT	Special Weather Statement	DMX	Madison	31 min
Jun 6, 12:44 PM CDT	Special Weather Statement	DMX	Madison, Union, Warren	31 min
Jun 6, 1:16 PM CDT	Special Weather Statement	DMX	Clarke, Warren	29 min
Jun 6, 2:34 PM CDT	Special Weather Statement	DMX	Appanoose, Decatur, Monroe, Wapello, Wayne	41 min
Jun 6, 3:23 PM CDT	Special Weather Statement	DMX	Appanoose, Davis	37 min
Jun 6, 3:47 PM CDT	Severe Thunderstorm Warning	DMX	Davis, Wapello	28 min

Nearby

Severe Thunderstorm Warnings in Iowa, 2022 Every severe thunderstorm warning 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.