Hail in Guthrie County, Iowa

Hail June 17, 2023 · Guthrie County, Iowa

0.75 in

Hail diameter

Where the report was made, with tornadoes recorded within 15 miles over the years.

The wider storm

A mesoscale convective vortex (MCV) moved out of Nebraska and South Dakota, into Iowa in the afternoon of June 17th. Increased forcing with the MCV met with increasing instability as CAPE reach 1500-2000 J/kg in the afternoon. Storms developed quickly in a line, with a few isolated cells remaining on the southern end of the line. While deep shear was only around 25 kts, this was enough to sustain updraft capable of producing severe hail. Several locations in southwest Iowa reported quarter sized hail with one instance of thunderstorm wind damage.

Began near Menlo (41.5200, -94.4500).

Source: NOAA Storm Events Database, event 1105621. Narratives are written by the National Weather Service forecast office that issued the report.

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