Arnold, CA Live Doppler Radar
Live radar for Arnold, Calaveras County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Arnold?
Since 1996, the National Weather Service has logged river or areal flooding on 12 days in the Sierra Nevada of Calaveras and Tuolumne Counties Between 3000-5000 ft forecast zone and Calaveras County — the most common reported hazard around Arnold, mostly in December and January. Next come flash flooding (4 days) and wildfires (2 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Flooding | 12 | Apr 2026 | Feb 9, 2017 · $7.0 million damage |
| Flash flooding | 4 | Mar 2023 | Mar 11, 2023 · $20,000 damage |
| Wildfires | 2 | Sep 1999 | Sep 9, 1999 · $290,000 damage |
| Debris flows | 2 | Mar 2016 | Dec 22, 2015 · $10,000 damage |
| Lightning casualties & damage | 1 | Sep 1999 | — |
| Damaging thunderstorm winds | 1 | Jan 2023 | Jan 10, 2023 · $11,000 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 Sierra Nevada of Calaveras and Tuolumne Counties Between 3000-5000 ft forecast zone and Calaveras County; damage is as reported, not adjusted for inflation.
How much snow does Arnold get?
A normal year brings about 105 inches of snow to Arnold, based on NOAA's 1991–2020 climate normals for the Calaveras Big Trees weather station 2.8 miles away. The snowiest month is usually February (25.9 in).
| Oct | Nov | Dec | Jan | Feb | Mar | Apr | May |
|---|---|---|---|---|---|---|---|
| 0.3 | 7.7 | 18.7 | 19.3 | 25.9 | 19.2 | 11.4 | 2.2 |
Normal snowfall in inches. TALON Pro compares this season's snow at your location with these normals as winter goes on.
Which radars cover Arnold?
The closest NEXRAD Doppler radar is KDAX (Sacramento, CA), about 74 miles west-northwest. 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 Arnold | View |
|---|---|---|---|
| KDAX Sacramento, CA | 74 mi west-northwest | 6,200 ft | Fair — the beam can pass over shallow snow and low-level rotation |
| KBBX Beale AFB, CA | 110 mi northwest | 11,200 ft | Limited — the beam overshoots the lowest part of storms |
| KMUX San Francisco, CA | 114 mi southwest | 11,700 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 Arnold
Since 1950, NOAA has recorded 2 tornadoes within 25 miles of Arnold. The strongest was an EF1 on March 11, 2023, which touched down about 24 miles south-southwest of town.
Hail: 6 reports of 1-inch or larger hail within 25 miles since 1955; the largest was 1.75-inch hail on July 20, 2015.
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 Arnold'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.
Arnold radar FAQ
Where is the nearest weather radar to Arnold, CA?
KDAX (Sacramento, CA), about 74 miles west-northwest. KBBX (Beale AFB, CA) is 110 miles away and also covers the area.
How often does Arnold flood?
Since 1996 the National Weather Service has logged river or areal flooding on 12 days in the Sierra Nevada of Calaveras and Tuolumne Counties Between 3000-5000 ft forecast zone and Calaveras County. TALON's free flash-flood risk layer shows, every 2 minutes, how close the rain that has fallen is to what it takes to flood — turn it on under Layers.
Is TALON's radar for Arnold 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 Arnold, follow it right away — see watch vs. warning.
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