Hail, Worth
- When
- May 30, 5:30 PM CST
- Where
- Worth County, Northwood
- Measured
- 1.25 in hail
- Property damage
- $50,000
- Crop damage
- $50,000
- Coordinates
- 43.377, -93.261 (the zone’s center; the record gives no point)
Hail and Damaging Wind in Iowa, May 30, 1994
5 hail, 1 thunderstorm wind, as filed by the National Weather Service.
Where it happened
Every event with a place to put it; 6 filed by county or forecast zone are drawn at its center, in a lighter ring. 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
- $120,000
- Crop damage
- $250,000
- Events
- 6
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
5 hail, 1 thunderstorm wind. Local standard time, as filed.
Hail, Mitchell
- When
- May 30, 6:50 PM CST
- Where
- Mitchell County, Stacyville
- Measured
- 1 in hail
- Property damage
- $5,000
- Crop damage
- $50,000
- Coordinates
- 43.356, -92.789 (the zone’s center; the record gives no point)
Hail, Mitchell
- When
- May 30, 7:00 PM CST
- Where
- Mitchell County, Mitchell
- Measured
- 1.75 in hail
- Property damage
- $50,000
- Crop damage
- $50,000
- Coordinates
- 43.356, -92.789 (the zone’s center; the record gives no point)
Hail, Mitchell
- When
- May 30, 7:00 PM CST
- Where
- Mitchell County, Osage
- Measured
- 0.75 in hail
- Property damage
- $5,000
- Crop damage
- $50,000
- Coordinates
- 43.356, -92.789 (the zone’s center; the record gives no point)
Hail, Bremer, Butler and Black Hawk
- When
- May 30, 8:49 PM CST
- Where
- Bremer, Butler and Black Hawk County, Clarksville
- Measured
- 0.75 in hail
- Property damage
- $5,000
- Crop damage
- $50,000
- Coordinates
- 42.775, -92.318 (the zone’s center; the record gives no point)
A cold front moved southeast into Iowa during the afternoon and early evening hours. Most of the dynamics with the front were well to the north of Iowa and moisture was quite limited. Surface dew point temperatures were in the upper 50s to middle 60s, with 850 mb dew point temperatures only around +10° C. The airmass was also capped during the day. Even so, it was quite unstable with CAPE values in the 3000-4000 J-Kg-1 range. Strong convection developed over Minnesota and Wisconsin. During the evening hours it developed southwest into Iowa. Strong thunderstorms moved across north-central and northeast Iowa during the evening, producing large hail. The first hail reports came from Worth County. Hail about the size of ping pong balls fell in Northwood. Mitchell, Floyd, and Butler Counties received the most significant hail, ranging from dime-size to golf ball-size. The storms produced gusty winds, but most of the wind gusts were below severe levels. One cell produced a wind gust of 60 mph on the Bremer, Butler, Black Hawk County lines between Finchford and Janesville.
Thunderstorm Wind, Bremer, Butler and Black Hawk
- When
- May 30, 9:10 PM CST
- Where
- Bremer, Butler and Black Hawk County, Finchford to to Janesville
- Measured
- 52 kt (60 mph)
- Property damage
- $5,000
- Coordinates
- 42.775, -92.318 (the zone’s center; the record gives no point)
A cold front moved southeast into Iowa during the afternoon and early evening hours. Most of the dynamics with the front were well to the north of Iowa and moisture was quite limited. Surface dew point temperatures were in the upper 50s to middle 60s, with 850 mb dew point temperatures only around +10° C. The airmass was also capped during the day. Even so, it was quite unstable with CAPE values in the 3000-4000 J-Kg-1 range. Strong convection developed over Minnesota and Wisconsin. During the evening hours it developed southwest into Iowa. Strong thunderstorms moved across north-central and northeast Iowa during the evening, producing large hail. The first hail reports came from Worth County. Hail about the size of ping pong balls fell in Northwood. Mitchell, Floyd, and Butler Counties received the most significant hail, ranging from dime-size to golf ball-size. The storms produced gusty winds, but most of the wind gusts were below severe levels. One cell produced a wind gust of 60 mph on the Bremer, Butler, Black Hawk County lines between Finchford and Janesville.
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
- Tornadoes and Hail in Wisconsin, May 30, 1994
- Damaging Wind in California, May 30, 1994
- Tornado and Hail in Texas, May 30, 1994
- Hail and Damaging Winds in Arkansas, May 30, 1994
- Hail in Indiana, May 30, 1994
- Hail in Mississippi, May 30, 1994
- Hail and Damaging Winds in Louisiana, May 30, 1994
- Tornado and Hail in Minnesota, May 30, 1994
- Hail in Missouri, May 30, 1994
More
Every storm in Iowa in 1994Every state in 1994This day in weather historyWarnings in Iowa, May 1994
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: 10324135, 10323792, 10323793, 10323794, 10321931, 10321975.