Thor, IA Live Doppler Radar
Live radar for Thor, Humboldt County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Thor?
Since 1996, the National Weather Service has logged river or areal flooding on 74 days in the Humboldt forecast zone and Humboldt County — the most common reported hazard around Thor, mostly in June and May. Next come heavy snow & winter storms (48 days) and damaging thunderstorm winds (47 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Flooding | 74 | Jul 2024 | Jun 12, 2010 · $20 million damage |
| Heavy snow & winter storms | 48 | Jan 2024 | Feb 24, 2007 · $250,000 damage |
| Damaging thunderstorm winds | 47 | Aug 2025 | Jul 17, 2010 · $300,000 damage |
| High winds | 44 | Mar 2025 | Nov 10, 1998 · $305,000 damage |
| Blizzards | 34 | Mar 2025 | Dec 20, 2012 · $100,000 damage |
| Extreme cold & wind chill | 25 | Jan 2025 | Sep 21, 1999 · $294,000 damage |
| Ice storms & sleet | 14 | Jan 2023 | Dec 23, 2009 · $500,000 damage |
| Flash flooding | 8 | Jul 2019 | Jul 9, 2000 · $200,000 damage |
Source: NOAA NCEI Storm Events Database, 1996–2026 (the latest year is partial). A "day" is a date with at least one report in the Humboldt forecast zone and Humboldt County; damage is as reported, not adjusted for inflation.
How much snow does Thor get?
A normal year brings about 39 inches of snow to Thor, based on NOAA's 1991–2020 climate normals for the Ft Dodge 5Nnw weather station 10.5 miles away. The snowiest month is usually February (11.8 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.4 | 2.8 | 7.9 | 8.6 | 11.8 | 5.6 | 1.5 | 0.4 |
Normal snowfall in inches. TALON Pro compares this season's snow at your location with these normals as winter goes on.
Which radars cover Thor?
The closest NEXRAD Doppler radar is KDMX (Des Moines, IA), about 68 miles south-southeast. Radar beams climb as they travel, so the height of the lowest scan over town decides how low in a storm the radar can see.
| Radar | Distance | Lowest beam over Thor | View |
|---|---|---|---|
| KDMX Des Moines, IA | 68 mi south-southeast | 5,500 ft | Good — most storms and steady rain or snow show clearly |
| KFSD Sioux Falls, SD | 149 mi west-northwest | 17,900 ft | Limited — the beam overshoots the lowest part of storms |
| KMPX Minneapolis, MN | 151 mi north | 18,400 ft | Limited — the beam overshoots the lowest part of storms |
Beam height is the center of the 0.5° scan above the radar, with standard refraction. Mountains near a radar can block it further.
Tornado & hail history near Thor
Since 1950, NOAA has recorded 136 tornadoes within 25 miles of Thor, 36 of them EF2/F2 or stronger. Most came in June and May. The strongest was an F5 on October 14, 1966, which passed about 22 miles east-northeast of town and caused 6 deaths. The most recent was an EF0 on June 26, 2025, which touched down about 13 miles north of town.
Hail: 312 reports of 1-inch or larger hail within 25 miles since 1955, 28 of them 2 inches or more; the largest was 5.50-inch hail on August 26, 2004.
Source: NOAA Storm Prediction Center — tornadoes 1950–2025, hail 1955–2025. Distances are to each tornado's track; ratings before February 2007 use the original Fujita scale.
On TALON you get Thor's live radar loop, rain/snow/ice colors, flash-flood risk, storm tracks with arrival times and NWS warnings free; close-up radar and rotation detection are part of TALON Pro.
Thor radar FAQ
Where is the nearest weather radar to Thor, IA?
KDMX (Des Moines, IA), about 68 miles south-southeast. KFSD (Sioux Falls, SD) is 149 miles away and also covers the area.
Does radar show snow in Thor?
Yes. TALON colors snow blue, a rain–snow mix pink and freezing rain purple using NOAA's precipitation-type analysis. Over Thor the lowest scan from KDMX is about 5,500 ft up.
Is TALON's radar for Thor free?
Yes — the US radar loop, rain/snow/ice colors, flash-flood risk, storm tracks and NWS warnings are free in any browser. Close-up radar, rotation detection and longer forecasts are part of TALON Pro.
Should I rely on radar for my safety?
No app replaces official warnings. When the National Weather Service issues a warning for Thor, follow it right away — see watch vs. warning.
Radar for nearby towns
- Eagle Grove, IA radar 8 mi
- Humboldt, IA radar 9 mi
- Fort Dodge, IA radar 14 mi
- Clarion, IA radar 17 mi
- Webster City, IA radar 20 mi
- Belmond, IA radar 25 mi
- Manson, IA radar 27 mi
- Algona, IA radar 28 mi
- Britt, IA radar 31 mi
- Pocahontas, IA radar 31 mi