Hail and Damaging Wind in Iowa, May 12, 1986

Name: Hail and Damaging Wind in Iowa, May 12, 1986
Start: 1986-05-12T15:35
End: 1986-05-12T20:45
Location: Iowa

May 12, 1986 · NWS DSM · 15 events in 10 counties and zones

14 hail, 1 thunderstorm wind, as filed by the National Weather Service.

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 15

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.

Event by event

14 hail, 1 thunderstorm wind. Local standard time, as filed.

Hail, Osceola

When: May 12, 3:35 PM CST
Where: Osceola County
Measured: 0.75 in hail
Coordinates: 43.420, -95.550

Hail, Osceola

When: May 12, 3:55 PM CST
Where: Osceola County
Measured: 1.75 in hail
Coordinates: 43.450, -95.450

Hail, Pottawattamie

When: May 12, 4:30 PM CST
Where: Pottawattamie County
Measured: 1.75 in hail
Coordinates: 41.270, -95.870

Hail, Mills

When: May 12, 5:00 PM CST
Where: Mills County
Measured: 2 in hail
Coordinates: 41.050, -95.770

Hail, Mills

When: May 12, 5:15 PM CST
Where: Mills County
Measured: 1.75 in hail
Coordinates: 41.120, -95.650

Hail, Clay

When: May 12, 5:20 PM CST
Where: Clay County
Measured: 1 in hail
Coordinates: 42.920, -95.350

Hail, Clay

When: May 12, 5:25 PM CST
Where: Clay County
Measured: 0.75 in hail
Coordinates: 43.150, -95.150

Hail, Harrison

When: May 12, 5:35 PM CST
Where: Harrison County
Measured: 1.75 in hail
Coordinates: 41.650, -95.720

Hail, Shelby

When: May 12, 5:55 PM CST
Where: Shelby County
Measured: 1.75 in hail
Coordinates: 41.870, -95.400

Thunderstorm Wind, Mills

When: May 12, 5:58 PM CST
Where: Mills County
Measured: 52 kt (60 mph)
Coordinates: 41.050, -95.770

Hail, Crawford

When: May 12, 6:00 PM CST
Where: Crawford County
Measured: 1.75 in hail
Coordinates: 41.930, -95.500

Hail, Fremont

When: May 12, 6:15 PM CST
Where: Fremont County
Measured: 1.5 in hail
Coordinates: 40.880, -95.600

Hail, Harrison

When: May 12, 6:27 PM CST
Where: Harrison County
Measured: 0.75 in hail
Coordinates: 41.620, -96.020

Hail, Calhoun

When: May 12, 8:45 PM CST
Where: Calhoun County
Measured: 1.75 in hail
Coordinates: 42.380, -94.670

Hail, Pocahontas

When: May 12, 8:45 PM CST
Where: Pocahontas County
Measured: 1.75 in hail
Coordinates: 42.580, -94.830

What these are

Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Iowa in 1986 Every state in 1986 This day in weather history Warnings in Iowa, May 1986

Sources

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 2026-09-24. Each event’s entry at NCEI: 10013973, 10013974, 10013975, 10013976, 10013977, 10013978, 10013979, 10013980, 10013981, 10013982, 10013983, 10013984, 10013985, 10013986, 10013987.