Lagunitas-Forest Knolls, CA Live Doppler Radar

Live radar for Lagunitas-Forest Knolls, Marin County: every NWS radar combined, rain, snow and ice colors, flash-flood risk, storm tracks and official warnings.

Open live radar for Lagunitas-Forest KnollsWhat TALON shows

What weather hits Lagunitas-Forest Knolls?

Since 1996, the National Weather Service has logged river or areal flooding on 60 days in the Marin Coastal Range forecast zone and Marin County — the most common reported hazard around Lagunitas-Forest Knolls, mostly in January and February. Next come debris flows (16 days) and flash flooding (15 days).

HazardDays reportedMost recentWorst on record
Flooding60Dec 2025Jan 1, 2006 · $108 million damage
Debris flows16Jan 2021Dec 11, 2014 · $1.0 million damage
Flash flooding15Feb 2017Dec 11, 2014 · $4.0 million damage
High winds12Jan 2026—
Damaging thunderstorm winds4Dec 2025—
Lightning casualties & damage2Dec 2019Sep 12, 2009 · $30,000 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 Marin Coastal Range forecast zone and Marin County; damage is as reported, not adjusted for inflation.

Which radars cover Lagunitas-Forest Knolls?

The closest NEXRAD Doppler radar is KDAX (Sacramento, CA), about 64 miles east-northeast. 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 Lagunitas-Forest KnollsView
KDAX
Sacramento, CA		64 mi east-northeast5,000 ftGood — most storms and steady rain or snow show clearly
KMUX
San Francisco, CA		74 mi southeast6,100 ftFair — the beam can pass over shallow snow and low-level rotation
KBBX
Beale AFB, CA		117 mi north-northeast12,200 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 Lagunitas-Forest Knolls

Since 1950, NOAA has recorded 3 tornadoes within 25 miles of Lagunitas-Forest Knolls, 1 of them EF2/F2 or stronger. Most came in December and June. The strongest was an F2 on June 1, 1958, which passed about 24 miles north-northwest of town. The most recent was an F0 on December 5, 1998, which touched down about 20 miles east-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 Lagunitas-Forest Knolls'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.

Lagunitas-Forest Knolls radar FAQ

Where is the nearest weather radar to Lagunitas-Forest Knolls, CA?

KDAX (Sacramento, CA), about 64 miles east-northeast. KMUX (San Francisco, CA) is 74 miles away and also covers the area.

How often does Lagunitas-Forest Knolls flood?

Since 1996 the National Weather Service has logged river or areal flooding on 60 days in the Marin Coastal Range forecast zone and Marin 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 Lagunitas-Forest Knolls 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 Lagunitas-Forest Knolls, follow it right away — see watch vs. warning.

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