Diablo Grande, CA Live Doppler Radar

Live radar for Diablo Grande, Stanislaus County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.

Open live radar for Diablo GrandeWhat TALON shows

What weather hits Diablo Grande?

Since 1996, the National Weather Service has logged river or areal flooding on 15 days in the Eastern Diablo Range Above 1000 ft forecast zone and Stanislaus County — the most common reported hazard around Diablo Grande, mostly in December and January. Next come lightning casualties & damage (3 days) and damaging thunderstorm winds (3 days).

HazardDays reportedMost recentWorst on record
Flooding15Apr 2026Jan 1, 2006 · 1 death · $100,000 damage
Lightning casualties & damage3May 2018Mar 21, 2017 · $200,000 damage
Damaging thunderstorm winds3Mar 2025Dec 24, 2015 · $150,000 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 Eastern Diablo Range Above 1000 ft forecast zone and Stanislaus County; damage is as reported, not adjusted for inflation.

Which radars cover Diablo Grande?

The closest NEXRAD Doppler radar is KMUX (San Francisco, CA), about 39 miles west-southwest. 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 Diablo GrandeView
KMUX
San Francisco, CA		39 mi west-southwest2,500 ftExcellent — the lowest scan sees close to the ground
KDAX
Sacramento, CA		79 mi north-northwest6,800 ftFair — the beam can pass over shallow snow and low-level rotation
KHNX
San Joaquin Valley, CA		117 mi southeast12,300 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 Diablo Grande

Since 1950, NOAA has recorded 9 tornadoes within 25 miles of Diablo Grande, 1 of them EF2/F2 or stronger. Most came in April and March. The strongest was an F2 on April 27, 1953, which touched down about 23 miles northeast of town. The most recent was an EF0 on April 1, 2025, which touched down about 25 miles north-northeast of town.

Hail: 1 report of 1-inch or larger hail within 25 miles since 1955; the largest was 1.00-inch hail on May 18, 1994.

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 Diablo Grande'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.

Diablo Grande radar FAQ

Where is the nearest weather radar to Diablo Grande, CA?

KMUX (San Francisco, CA), about 39 miles west-southwest. KDAX (Sacramento, CA) is 79 miles away and also covers the area.

How often does Diablo Grande flood?

Since 1996 the National Weather Service has logged river or areal flooding on 15 days in the Eastern Diablo Range Above 1000 ft forecast zone and Stanislaus County; the deadliest was on January 1, 2006, 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 Diablo Grande 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 Diablo Grande, follow it right away — see watch vs. warning.

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