Hail, Clarke
- When
- June 13, 4:52 AM CST
- Where
- Clarke County, 0.87 mi SW of Murray
- Measured
- 0.88 in hail
- Reported by
- Trained Spotter
- Coordinates
- 41.040, -93.980
A pair of MCVs resulted in severe storms in Iowa on the morning of June 13th. The first moved in from Nebraska and interacted with highly unstable airmass with MLCAPE analyzed at over 3000 J/kg in an area of strong warm air advection.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS DMX wrote it up.
A pair of MCVs resulted in severe storms in Iowa on the morning of June 13th. The first moved in from Nebraska and interacted with highly unstable airmass with MLCAPE analyzed at over 3000 J/kg in an area of strong warm air advection. This allowed storms to strengthen and produce nickel sized hail in the early morning. At the same time an MCV was moving into Minnesota with trailing convection into northern Iowa. By mid morning this had also collided with the unstable air with several reports of hail between nickel to golf ball sized in northern Iowa.
The local office's own words before the first event, 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 the first event at Jun 13, 3:01 AM CST, 1 hour 51 minutes earlier.
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</html>The Des Moines radar (KDMX), 80 km away, was scanning. The volume nearest the first event began at 10:53 UTC.
5 hail. Local standard time, as filed.
Report via social media. Time estimated by radar.
Time estimated via radar.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Iowa in 2022Every state in 2022This day in weather historyWarnings in Iowa, June 2022
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-10-01. Each event’s entry at NCEI: 1033192, 1033193, 1033194, 1033195, 1033196.