Colma, CA Live Doppler Radar
Live radar for Colma, San Mateo County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.
What weather hits Colma?
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 Colma, mostly in December and February. Next come high winds (26 days) and flash flooding (14 days).
| Hazard | Days reported | Most recent | Worst on record |
|---|---|---|---|
| Flooding | 41 | Jan 2026 | Jan 1, 2006 · $5.0 million damage |
| High winds | 26 | Jan 2026 | Oct 13, 2009 · $2.5 million damage |
| Flash flooding | 14 | Jan 2026 | Feb 3, 1997 · 1 death |
| Debris flows | 13 | Jan 2023 | Jan 21, 2012 · $75,000 damage |
| Damaging thunderstorm winds | 12 | Dec 2025 | Oct 19, 2004 · $50,000 damage |
| Excessive heat | 10 | Mar 2026 | May 17, 2009 · $10,000 damage |
| Coastal flooding | 4 | Jan 2026 | — |
| Lightning casualties & damage | 2 | Aug 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 Colma?
The closest NEXRAD Doppler radar is KMUX (San Francisco, CA), about 47 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.
| Radar | Distance | Lowest beam over Colma | View |
|---|---|---|---|
| KMUX San Francisco, CA | 47 mi southeast | 3,300 ft | Good — most storms and steady rain or snow show clearly |
| KDAX Sacramento, CA | 71 mi northeast | 5,800 ft | Good — most storms and steady rain or snow show clearly |
| KBBX Beale AFB, CA | 133 mi north-northeast | 15,000 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 Colma
Since 1950, NOAA has recorded 6 tornadoes within 25 miles of Colma. Most came in March and December. The strongest was an F1 on March 20, 2005, which passed about 3 miles southeast of town.
Hail: 1 report of 1-inch or larger hail within 25 miles since 1955; the largest was 1.00-inch hail on March 4, 1996.
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 Colma'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.
Colma radar FAQ
Where is the nearest weather radar to Colma, CA?
KMUX (San Francisco, CA), about 47 miles southeast. KDAX (Sacramento, CA) is 71 miles away and also covers the area.
How often does Colma 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 Colma 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 Colma, follow it right away — see watch vs. warning.
Radar for nearby towns
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- Millbrae, CA radar 6 mi
- Burlingame, CA radar 8 mi
- Hillsborough, CA radar 10 mi
- San Mateo, CA radar 11 mi
- Alameda, CA radar 11 mi