Belmont, CA Live Doppler Radar

Live radar for Belmont, San Mateo County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.

Open live radar for BelmontWhat TALON shows

What weather hits Belmont?

Since 1996, the National Weather Service has logged river or areal flooding on 41 days in the San Francisco Bay Shoreline forecast zone and San Mateo County — the most common reported hazard around Belmont, mostly in December and February. Next come high winds (26 days) and flash flooding (14 days).

HazardDays reportedMost recentWorst on record
Flooding41Jan 2026Jan 1, 2006 · $5.0 million damage
High winds26Jan 2026Oct 13, 2009 · $2.5 million damage
Flash flooding14Jan 2026Feb 3, 1997 · 1 death
Debris flows13Jan 2023Jan 21, 2012 · $75,000 damage
Damaging thunderstorm winds12Dec 2025Oct 19, 2004 · $50,000 damage
Excessive heat10Mar 2026May 17, 2009 · $10,000 damage
Coastal flooding4Jan 2026—
Lightning casualties & damage2Aug 2020—

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 San Francisco Bay Shoreline forecast zone and San Mateo County; damage is as reported, not adjusted for inflation.

Which radars cover Belmont?

The closest NEXRAD Doppler radar is KMUX (San Francisco, CA), about 33 miles 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.

RadarDistanceLowest beam over BelmontView
KMUX
San Francisco, CA		33 mi southeast2,100 ftExcellent — the lowest scan sees close to the ground
KDAX
Sacramento, CA		76 mi north-northeast6,400 ftFair — the beam can pass over shallow snow and low-level rotation
KBBX
Beale AFB, CA		142 mi north-northeast16,500 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 Belmont

Since 1950, NOAA has recorded 10 tornadoes within 25 miles of Belmont, 2 of them EF2/F2 or stronger. Most came in January and March. The strongest was an F2 on May 5, 1998, which touched down about 18 miles southeast of town. The most recent was an F1 on March 20, 2005, which passed about 12 miles northwest of town.

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 Belmont'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.

Belmont radar FAQ

Where is the nearest weather radar to Belmont, CA?

KMUX (San Francisco, CA), about 33 miles southeast. KDAX (Sacramento, CA) is 76 miles away and also covers the area.

How often does Belmont flood?

Since 1996 the National Weather Service has logged river or areal flooding on 41 days in the San Francisco Bay Shoreline forecast zone and San Mateo 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 Belmont 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 Belmont, follow it right away — see watch vs. warning.

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