Hail in Osceola County, Iowa
Hail April 13, 2026 · Osceola County, Iowa
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
Pictures provided of quarter size hail.
The wider storm
At late afternoon, considerable moisture focused near a strong warm front from low pressure across northeastern Nebraska through northwest Iowa. Climatologically significant mid-level lapse rates produced a strong capping inversion which gradually weakened north of the warm front. Storms initiated with effective deep-layer shear from 40 to 50 knots and quickly became severe hail producers north of the warm front across southeast South Dakota into southwest Minnesota during the late afternoon, with additional storms developing in proximity to the surface wave across northwest Iowa. One of these latter storms produced two weak tornadoes across northwest Iowa.
Began near May City (43.3200, -95.4800).
Other tornadoes from the same storm system
2 more tornadoes the National Weather Service filed under this storm episode.
Source: NOAA Storm Events Database, event 1334064. Narratives are written by the National Weather Service forecast office that issued the report.
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