Alleghany, CA Live Doppler Radar

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

Open live radar for Alleghany What TALON shows

What weather hits Alleghany?

Since 1996, the National Weather Service has logged river or areal flooding on 3 days in the Sierra Nevada of Yuba-Sierra-Nevada-Placer Counties Between 3000-5000 ft Including Interstate 80 forecast zone and Sierra County — the most common reported hazard around Alleghany, mostly in March and December. Next come debris flows (3 days) and damaging thunderstorm winds (1 days).

Hazard	Days reported	Most recent	Worst on record
Flooding	3	Mar 2023	Feb 9, 2017 · $6.8 million damage
Debris flows	3	Oct 2021	Jan 11, 2017 · $1.6 million damage
Damaging thunderstorm winds	1	Jul 2003	—
Lightning casualties & damage	1	Jul 2020	Jul 25, 2020 · 1 death

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 Yuba-Sierra-Nevada-Placer Counties Between 3000-5000 ft Including Interstate 80 forecast zone and Sierra County; damage is as reported, not adjusted for inflation.

How much snow does Alleghany get?

A normal year brings about 26 inches of snow to Alleghany, based on NOAA's 1991–2020 climate normals for the Downieville weather station 6.7 miles away. The snowiest month is usually February (7.9 in).

Oct	Nov	Dec	Jan	Feb	Mar	Apr	May
0.1	1.2	5.1	6.4	7.9	4.2	1.2	0.1

Normal snowfall in inches. TALON Pro compares this season's snow at your location with these normals as winter goes on.

Which radars cover Alleghany?

The closest NEXRAD Doppler radar is KBBX (Beale AFB, CA), about 42 miles west. 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 Alleghany	View
KBBX Beale AFB, CA	42 mi west	2,800 ft	Excellent — the lowest scan sees close to the ground
KRGX Reno, NV	76 mi east-northeast	6,400 ft	Fair — the beam can pass over shallow snow and low-level rotation
KDAX Sacramento, CA	80 mi southwest	6,900 ft	Fair — the beam can pass over shallow snow and low-level rotation

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 Alleghany

NOAA has no tornado on record within 25 miles of Alleghany since 1950.

Hail: 6 reports of 1-inch or larger hail within 25 miles since 1955; the largest was 1.00-inch hail on May 30, 2020.

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 Alleghany'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.

Alleghany radar FAQ

Where is the nearest weather radar to Alleghany, CA?

KBBX (Beale AFB, CA), about 42 miles west. KRGX (Reno, NV) is 76 miles away and also covers the area.

How often does Alleghany flood?

Since 1996 the National Weather Service has logged river or areal flooding on 3 days in the Sierra Nevada of Yuba-Sierra-Nevada-Placer Counties Between 3000-5000 ft Including Interstate 80 forecast zone and Sierra 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 Alleghany 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 Alleghany, follow it right away — see watch vs. warning.

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