Hail, Cerro Gordo
- When
- April 10, 10:28 AM CST
- Where
- Cerro Gordo County, 3 mi E of Mason City
- Measured
- 0.75 in hail
- Property damage
- $500
- Reported by
- GENERAL PUBLIC
- Coordinates
- 43.150, -93.130
Hail in Iowa, April 10, 1999
Another in a series of upper level low pressure systems moved toward Iowa from the southwest. This system was not as organized as the past couple systems however.
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
The toll
- Deaths
- 0
- Injuries
- 0
- Property damage
- $2,000
- Crop damage
- None recorded
- Events
- 2
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.
What happened
The episode as NWS DMX wrote it up.
Another in a series of upper level low pressure systems moved toward Iowa from the southwest. This system was not as organized as the past couple systems however. Thunderstorms developed over the state in the warm air advection area in advance of the low . Most of the storms were not severe. One cell moved through the Mason City area and dropped dime size hail however. There was enough hail to cover the ground in the city itself.
The radar
The Des Moines radar (KDMX), 165 km away, was scanning. The volume nearest the first event began at 16:30 UTC.
Event by event
2 hail. Local standard time, as filed.
Hail, Cerro Gordo
- When
- April 10, 10:32 AM CST
- Where
- Cerro Gordo County, Mason City
- Measured
- 0.75 in hail
- Property damage
- $1,000
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 43.150, -93.200
What these are
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
After NWS Directive 10-1605, the rules offices file Storm Data by.
The same day elsewhere
- Cold in California, April 10, 1999
- Hail and Damaging Winds in Indiana, April 10 to 11, 1999
- Lightning Strikes in Wisconsin, April 10, 1999
- Hail and Damaging Wind in Tennessee, April 10, 1999
- High Wind in New Mexico, April 10, 1999
- Hail and Damaging Wind in Illinois, April 10, 1999
- Hail in Illinois, April 10, 1999
- High Wind in Nebraska, April 10, 1999
- High Wind in Wyoming, April 10, 1999
- Hail in Illinois, April 10, 1999
- Hail in Ohio, April 10, 1999
- Hail in Kentucky, April 10, 1999
More
Every storm in Iowa in 1999Every state in 1999This day in weather historyWarnings in Iowa, April 1999
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: 5686964, 5686965.