County Hazards

Storm events on record through

Hail events in Story County, Iowa The hail events on record, by date and by year

This page is a county record of past events and claims. It does not show the flood zone or the risk of an address. For the flood map of an address, use FEMA's address search.

NCEI has 325 hail events on record for Story County, Iowa, from 1955 through 30 Jun 2026.

The newest hail event on record is on 20 Jun 2025.

From 2016 through 2025, NCEI has 126 hail events on record for the county.

The NWS collects event reports from a variety of sources, which include (but are not limited to): county, state, and federal emergency management officials, local law enforcement officials, SKYWARN spotters, NWS damage surveys, newspaper clipping services, the insurance industry, and the general public, among others.

The National Weather Service reports property and crop damage estimates using available data at the time of event reporting. These values should therefore be considered broad estimates. Damage amounts are not adjusted for inflation.

The words of the agency. Source: NOAA NCEI, Storm Events Database, page "Frequently Asked Questions", copied on .

Date of the data: NCEI storm events through . Event types on this page: Hail.

Newest hail events on record

Hail0.75 in, penny size

2 miles NW of AMES

Hail1.00 in, quarter size

1 mile SE of ZEARING

Hail1.00 in, quarter size

At NEVADA

Hail1.00 in, quarter size

1 mile N of MAXWELL

Hail1.25 in, half dollar size

1 mile S of NEVADA

Hail1.00 in, quarter size

1 mile E of NEVADA

Hail1.50 in, ping-pong ball size

At NEVADA

Hail1.00 in, quarter size

At NEVADA

Hail0.88 in, nickel size

1 mile N of AMES ARPT

Hail1.25 in, half dollar size

1 mile E of AMES

Hail0.88 in, nickel size

1 mile E of ONTARIO

Hail1.00 in, quarter size

1 mile NW of ONTARIO

Hail0.75 in, penny size

1 mile E of ONTARIO

Hail1.50 in, ping-pong ball size

At ONTARIO

Hail1.00 in, quarter size

1 mile SE of ONTARIO

Hail1.00 in, quarter size

1 mile E of COLO

Hail1.00 in, quarter size

At ZEARING

Hail1.00 in, quarter size

At NEVADA

Hail1.25 in, half dollar size

2 miles ESE of SHIPLEY

Hail1.00 in, quarter size

3 miles WSW of STORY CITY

Hail0.88 in, nickel size

1 mile E of AMES ARPT

Hail1.00 in, quarter size

1 mile S of ONTARIO

Hail0.75 in, penny size

1 mile S of ONTARIO

Hail0.75 in, penny size

At AMES

Hail0.88 in, nickel size

2 miles NW of AMES

A place is the text of the NCEI record: a distance and a direction from a reference place. The site does not show a place text that names a private property or reads as a person. Hail size is in inches, with the object that NCEI names for that size.

Hail events by year

Hail events on record for Story County by year, 1950 to 2026
Decade0123456789All
1950s00000000000
1960s00000000145
1970s10003111018
1980s221001020210
1990s0013501010828
2000s1591082133127198
2010s211192520930897
2020s151336915079

A darker cell has a larger count. The number is in each cell.

Hail events are on record from 1955. The year 2026 has the events through 30 Jun 2026 only.

By month, all years

  1. Jan0
  2. Feb0
  3. Mar24
  4. Apr48
  5. May103
  6. Jun72
  7. Jul46
  8. Aug10
  9. Sep15
  10. Oct5
  11. Nov1
  12. Dec1

Magnitudes on record

Hail events on record for Story County by hail size
Hail sizeSize in wordsEvents
under 1 inpea to quarter107
1 to 1.74 inquarter to golf ball147
1.75 to 2.74 ingolf ball to baseball59
2.75 to 3.99 inbaseball to softball8
4 in and largersoftball and larger4

When listing hail size under Magnitude, e.g., 2.25 in., the hail size is given in inches and hundredths of inches. These values are assigned a size in inches from their appearance.

The words of the agency. Source: NOAA NCEI, Storm Events Database, page "Frequently Asked Questions", copied on .

An event without a size in the record is not in this table.

Beside the other counties

Hail events on record: Story County beside the total of the counties of Iowa and of the United States
MeasureStoryAll counties of IowaAll counties of the United States
Hail events, 1955 to 202632515,913423,723
Events for each 100 square miles56.828.512.0
Events for each 10,000 residents32.749.812.8

The columns for the state and the United States total the counties. They count the events of each county in the same way as the county column. A forecast zone with another name than a county counts for the state only.

More hail events on record

Hail events on record for Story County, newest first, without the 25 newest events above
DateEvent typeMagnitudeDamage estimateDeathsInjuriesOn record for
Hail0.75 innone00County
Hail1.00 innone00County
Hail0.75 innone00County
Hail1.00 innone00County
Hail1.25 innone00County
Hail1.50 innone00County
Hail1.75 innone00County
Hail1.50 innone00County
Hail2.00 innone00County
Hail2.50 innone00County
Hail2.50 innone00County
Hail1.00 innone00County
Hail0.88 innone00County
Hail1.75 innone00County
Hail1.25 innone00County
Hail1.50 innone00County
Hail1.50 innone00County
Hail1.25 innone00County
Hail1.25 innone00County
Hail1.00 innone00County
Hail0.75 innone00County
Hail1.00 innone00County
Hail0.75 innone00County
Hail1.75 innone00County
Hail1.00 innone00County
Hail1.00 innone00County
Hail1.00 innone00County
Hail1.25 innone00County
Hail1.00 innone00County
Hail1.00 innone00County
Hail0.75 innone00County
Hail1.25 in$20 thousand00County
Hail1.00 innone00County
Hail1.00 innone00County
Hail1.00 innone00County
Hail1.25 innone00County
Hail1.25 innone00County
Hail1.00 innone00County
Hail0.88 innone00County
Hail0.88 innone00County
Hail1.00 innone00County
Hail1.50 innone00County
Hail1.75 innone00County
Hail2.50 innone00County
Hail2.50 innone00County
Hail1.00 innone00County
Hail1.75 innone00County
Hail1.00 innone00County
Hail1.25 innone00County
Hail1.00 innone00County
Hail1.50 innone00County
Hail2.00 innone00County
Hail1.50 innone00County
Hail0.88 innone00County
Hail0.75 innone00County
Hail1.00 innone00County
Hail1.00 innone00County
Hail1.00 innone00County
Hail1.25 innone00County
Hail1.50 innone00County
Hail1.25 innone00County
Hail0.75 innone00County
Hail0.88 innone00County
Hail0.88 innone00County
Hail1.00 innone00County
Hail0.75 innone00County
Hail1.50 innone00County
Hail1.00 innone00County
Hail1.00 innone00County
Hail1.50 innone00County
Hail1.00 innone00County
Hail0.88 innone00County
Hail1.00 innone00County
Hail1.00 innone00County
Hail0.88 innone00County
Hail1.00 innone00County
Hail1.00 innone00County
Hail1.50 in$5 thousand00County
Hail1.75 in$10 thousand00County
Hail1.50 in$5 thousand00County
Hail2.00 in$5 thousand00County
Hail1.75 in$10 thousand00County
Hail0.88 innone00County
Hail2.25 in$50 thousand00County
Hail1.25 in$5 thousand00County
Hail1.50 in$10 thousand00County
Hail1.50 in$10 thousand00County
Hail1.00 innone00County
Hail1.00 innone00County
Hail1.00 in$5 thousand00County
Hail1.00 in$5 thousand00County
Hail2.00 in$20 thousand00County
Hail1.00 innone00County
Hail1.25 innone00County
Hail1.75 innone00County
Hail1.75 in$250 thousand00County
Hail2.50 in$50 thousand00County
Hail2.00 in$25 thousand00County
Hail1.75 in$25 thousand00County
Hail1.50 in$20 thousand00County
Hail1.75 in$20 thousand00County
Hail2.75 in$20 thousand00County
Hail1.75 in$15 thousand00County
Hail1.75 in$15 thousand00County
Hail1.00 in$55 thousand00County
Hail1.75 in$25 thousand00County
Hail1.00 in$11 thousand00County
Hail2.00 in$20 thousand00County
Hail1.50 in$20 thousand00County
Hail1.25 in$15 thousand00County
Hail1.75 in$15 thousand00County
Hail1.00 in$12 thousand00County
Hail1.00 in$13 thousand00County
Hail1.50 in$15 thousand00County
Hail1.00 in$13 thousand00County
Hail1.75 in$15 thousand00County
Hail1.75 in$15 thousand00County
Hail0.75 in$10 thousand00County
Hail0.75 in$10 thousand00County
Hail1.50 in$20 thousand00County
Hail2.00 in$20 thousand00County
Hail1.75 in$15 thousand00County
Hail1.75 in$15 thousand00County
Hail1.75 in$15 thousand00County
Hail2.60 in$15 thousand00County
Hail1.00 in$13 thousand00County
Hail1.00 in$12 thousand00County
Hail0.88 in$12 thousand00County
Hail1.00 in$12 thousand00County
Hail1.00 in$12 thousand00County
Hail1.50 in$10 thousand00County
Hail1.75 in$15 thousand00County
Hail1.00 in$15 thousand00County
Hail1.75 in$15 thousand00County
Hail5.50 in$110 thousand00County
Hail1.75 in$28 thousand00County
Hail2.75 in$15 thousand00County
Hail1.75 in$10 thousand00County
Hail1.00 in$12 thousand00County
Hail2.00 in$180 thousand00County
Hail1.00 in$15 thousand00County
Hail1.00 in$10 thousand00County
Hail1.00 in$10 thousand00County
Hail1.00 in$15 thousand00County
Hail1.75 in$20 thousand00County
Hail1.75 in$30 thousand00County
Hail1.00 in$10 thousand00County
Hail1.00 in$10 thousand00County
Hail4.00 in$275 thousand00County
Hail1.75 in$35 thousand00County
Hail1.75 in$20 thousand00County
Hail1.00 in$15 thousand00County
Hail1.00 in$15 thousand00County
Hail2.50 in$35 thousand00County
Hail2.75 in$25 thousand00County
Hail4.00 in$150 thousand00County
Hail5.00 in$100 thousand00County
Hail2.75 in$85 thousand00County
Hail3.00 in$50 thousand00County
Hail1.75 in$35 thousand00County
Hail1.75 in$20 thousand00County
Hail1.25 in$11 thousand00County
Hail3.00 in$600 thousand00County
Hail1.00 in$13 thousand00County
Hail1.00 in$100 thousand00County
Hail1.00 in$55 thousand00County
Hail1.00 in$55 thousand00County
Hail1.00 in$55 thousand00County
Hail1.75 in$505 thousand00County
Hail1.75 in$55 thousand00County
Hail1.75 in$55 thousand00County
Hail0.75 in$10 thousand00County

The site keeps 197 of the 325 events for this page. It keeps the newest 120 events. It also keeps 80 events with the most damage, injuries or deaths. A damage figure is an estimate in the NCEI record.

Official channels

These links open the pages of the agencies. The site checked the links on .

Cite this page

County Hazards. "Hail events on record for Story County, Iowa". https://countyhazards.com/county/ia/story/hail/. Data: NOAA NCEI Storm Events Database through 30 Jun 2026. Page made on .

Questions

Which month has the most hail events on record for Story County?
May has 103 of the 325 hail events on record from 1955 through 30 Jun 2026.
How many hail events are on record for Iowa?
NCEI has 15,950 hail events on record for Iowa from 1955 through 30 Jun 2026. That count has every forecast zone of the state.
How does Story County compare with the other counties of Iowa?
The counties of Iowa have 28.5 hail events for each 100 square miles. Story County has 56.8.
How large is the hail on record for Story County?
71 hail events have a size of 1.75 inches or more. NCEI names 1.75 inches a golf ball.