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Colorado · County tornado history

Weld County, Colorado tornadoes

NOAA’s Storm Prediction Center has recorded 298 tornadoes in Weld County, Colorado from 1950 through 2024, about 4.0 a year. That ranks it 1 of 54 counties in Colorado with a recorded tornado. The most recent was an EF-U on June 20, 2024.

By Twisters.us · Updated · How we count

Tornadoes since 1950
298
Since 2000
94
Strongest
EF3, May 22, 2008
Most recent
EF-U, June 20, 2024
Peak month
June (95)
Per 1,000 sq mi
74
FEMA tornado risk
Relatively High

F0/EF0 1 2 3 4 5 · Lines run from where each tornado touched down to where it lifted; dots are short paths. Neighboring counties are outlined.

When tornadoes hit Weld County

June has brought the most, 95 of 298. About 81% touched down between 2 pm and 8 pm (Central Standard Time, as the Storm Prediction Center records it).

By decade

More tornadoes in recent decades mostly reflects better detection and reporting (Doppler radar, storm spotters, damage surveys), especially for weak EF0 tornadoes, not necessarily more storms. The 2020s bar covers only 2020 to 2024.

How strong they were

Rating Estimated 3-second gust Tornadoes
F0 / EF0 Light damage: 65 to 85 mph (EF scale) 183
F1 / EF1 Moderate: 86 to 110 mph 90
F2 / EF2 Considerable: 111 to 135 mph 17
F3 / EF3 Severe: 136 to 165 mph 2
F4 / EF4 Devastating: 166 to 200 mph 0
F5 / EF5 Incredible: over 200 mph 0
EF-U Unknown: no damage to rate (mostly since 2016) 6

Tornadoes before February 2007 were rated on the original Fujita (F) scale; since then the National Weather Service uses the Enhanced Fujita (EF) scale. Wind speeds above are EF-scale estimates from damage, not measurements. See what the EF scale means.

The strongest tornadoes in Weld County

Date Rating Path length Path width Deaths Injuries
May 22, 2008 EF3 38.7 mi 1,760 yd 1 78
May 15, 1952 F3 7.4 mi 150 yd 5
May 30, 1957 F2 1.3 mi 10 yd 1
July 10, 1955 F2 4.3 mi 10 yd
May 30, 1957 F2 9.1 mi 10 yd
June 8, 1958 F2 7.1 mi 10 yd
May 8, 1965 F2 1 mi 17 yd
June 4, 1976 F2 1.5 mi 200 yd
June 25, 1982 F2 1 mi 200 yd
May 18, 1984 F2 5 mi 50 yd

Deaths and injuries are for each tornado’s whole path, which can cross other counties.

The deadliest

The deadliest tornado to touch Weld County was an EF3 on May 22, 2008. It killed 1 person and injured 78 along its 38.7-mile path.

Most recent tornadoes

Date Rating Path length Path width Deaths Injuries
June 20, 2024 EF-U 0.1 mi 20 yd
July 31, 2023 EF-U 0 mi 25 yd
June 6, 2023 EF0 0 mi 20 yd
April 25, 2023 EF-U 0 mi 50 yd
April 25, 2023 EF-U 0 mi 50 yd
April 25, 2023 EF-U 0 mi 50 yd
July 6, 2022 EF-U 0 mi 50 yd
June 7, 2021 EF2 7.5 mi 50 yd

The official database ends with 2024. For storms since then, see the Storm Prediction Center’s reports and your local National Weather Service office.

FEMA’s tornado risk rating

FEMA’s National Risk Index rates the tornado risk in Weld County as relatively high, with a score of 95 out of 100 compared with every other U.S. county. It estimates about 4.20 tornadoes a year here and an expected annual loss of about $16,075,181 to buildings, people and farming. The index mixes how often tornadoes strike with what is exposed and how well a community can recover, so a busy rural county can rate lower than a less active city.

Neighboring counties

Staying safe

When a tornado warning is issued, act at once. Go to a basement, storm shelter or safe room. With none, use a small windowless room on the lowest floor, as far from outside walls as you can, and cover your head and neck. Mobile homes and cars are not safe places to ride out a tornado: leave early for a sturdy building or shelter. Read the full tornado safety guide and the National Weather Service advice linked below.

Sources

Sources last checked 1 November 2026.

Frequently asked questions

How many tornadoes has Weld County had?

298 from 1950 through 2024 in NOAA’s Storm Prediction Center database, 94 of them since 2000.

When was the last tornado in Weld County?

The most recent in the official record was an EF-U on June 20, 2024. Later storms are not yet in the final database.

What was the strongest tornado in Weld County?

An EF3 on May 22, 2008, with a 38.7-mile path.

When is tornado season in Weld County?

June has had the most tornadoes here. Across the U.S. the peak runs from spring into early summer, and the South also sees tornadoes in late fall and winter.