Twain Harte, CA Live Doppler Radar

Live radar for Twain Harte, Tuolumne County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.

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What weather hits Twain Harte?

Since 1996, the National Weather Service has logged flash flooding on 10 days in the Sierra Nevada of Calaveras and Tuolumne Counties Between 3000-5000 ft forecast zone and Tuolumne County — the most common reported hazard around Twain Harte, mostly in March and July. Next come flooding (9 days) and damaging thunderstorm winds (6 days).

HazardDays reportedMost recentWorst on record
Flash flooding10Mar 2023Nov 22, 1996 · 1 death
Flooding9Mar 2023Mar 4, 2023 · $42 million damage
Damaging thunderstorm winds6Mar 2023Mar 21, 2017 · $1.0 million damage
Debris flows3Sep 2017Mar 6, 2014 · $50,000 damage
Lightning casualties & damage2Jul 2013Jul 1, 2013 · 1 death
Wildfires1Aug 1996—

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 Tuolumne County; damage is as reported, not adjusted for inflation.

Which radars cover Twain Harte?

The closest NEXRAD Doppler radar is KDAX (Sacramento, CA), about 85 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.

RadarDistanceLowest beam over Twain HarteView
KDAX
Sacramento, CA		85 mi west-northwest7,500 ftFair — the beam can pass over shallow snow and low-level rotation
KMUX
San Francisco, CA		110 mi west-southwest11,100 ftLimited — the beam overshoots the lowest part of storms
KHNX
San Joaquin Valley, CA		124 mi south-southeast13,300 ftLimited — 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 Twain Harte

Since 1950, NOAA has recorded 1 tornado within 25 miles of Twain Harte. The strongest was an EF1 on March 11, 2023, which touched down about 18 miles west-southwest of town.

Hail: 4 reports of 1-inch or larger hail within 25 miles since 1955; the largest was 1.25-inch hail on March 21, 2017.

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 Twain Harte'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.

Twain Harte radar FAQ

Where is the nearest weather radar to Twain Harte, CA?

KDAX (Sacramento, CA), about 85 miles west-northwest. KMUX (San Francisco, CA) is 110 miles away and also covers the area.

How often does Twain Harte flood?

Since 1996 the National Weather Service has logged flash flooding on 10 days in the Sierra Nevada of Calaveras and Tuolumne Counties Between 3000-5000 ft forecast zone and Tuolumne County; the deadliest was on November 22, 1996, with 1 death. 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 Twain Harte 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 Twain Harte, follow it right away — see watch vs. warning.

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