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Sierra County weather alerts

1 active alert for Sierra County, California right now: a Lake Wind Advisory.

9 in the last 30 days 9 in 12 months (since Aug 30) most common: Lake Wind Advisory Get alerts on your phone →

Active alerts for Sierra County

Refreshed every few minutes; times in PDT.

Moderate Expected

Lake Wind Advisory

Issued Sun, Sep 6, 1:25 AM PDT by NWS Reno NV Until Sun, Sep 6, 11:00 PM PDT (in 2 hr)

Area: Lassen-Eastern Plumas-Eastern Sierra Counties; Greater Lake Tahoe Area; Mono; Mineral and Southern Lyon Counties; Greater Lake Tahoe Area; Greater Reno-Carson City-Minden Area; Western Nevada Basin and Range including...

* WHAT...Southwest winds 15 to 25 mph with gusts up to 35 mph. Wave heights up to 3 feet on Lake Tahoe and Pyramid Lake. * WHERE...Greater Lake Tahoe Area, Lassen-Eastern Plumas-Eastern Sierra Counties, Mono County, Mineral and Southern Lyon Counties, Greater Reno-Carson City-Minden Area, and Western Nevada Basin and Range including: Lake Tahoe, Pyramid L...

What it means: Winds strong enough to make lake waters hazardous for small boats.

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Where

Sierra County on the map

Alert polygons are NWS's own. Forecast Bar's radar shows the same warnings over live precipitation, with future radar and lightning. See the radar.

Last 30 days

Recent alerts for Sierra County

Alert	Issued	Ended	Issued by
Lake Wind Advisory	Sep 5, 2:08 PM	11:00 PM	Reno NV
Lake Wind Advisory	Sep 5, 2:08 PM	11:00 PM	Reno NV
Lake Wind Advisory	Sep 5, 1:59 PM	11:00 PM	Reno NV
Lake Wind Advisory	Sep 4, 8:51 PM	Sep 4, 9:00 PM	Reno NV
Lake Wind Advisory	Sep 4, 2:02 AM	Sep 4, 9:00 PM	Reno NV
Lake Wind Advisory	Sep 3, 10:45 PM	Sep 3, 11:00 PM	Reno NV
Lake Wind Advisory	Sep 3, 1:02 AM	Sep 3, 11:00 PM	Reno NV
Lake Wind Advisory	Sep 2, 1:00 AM	Sep 3, 11:00 PM	Reno NV

Pattern

What Sierra County gets alerted for

Every alert that named Sierra County in the last 12 months, by type. Records begin August 30, 2026, so this fills in over the year.

Lake Wind Advisory

Plain English

What these alerts mean

A warning means the hazard is happening or about to; a watch means conditions favour it; an advisory is a lesser hazard still worth planning around.

Lake Wind Advisory

Winds strong enough to make lake waters hazardous for small boats.

Nearby

Alerts near Sierra County

Neighbouring counties in California

Nevada County1 Plumas County1 Yuba County Lassen County1 Butte County All of California →

Questions

About Sierra County alerts

How do I get Sierra County weather alerts on my iPhone?

Install Forecast Bar, add Sierra County as a location, and turn on severe weather alerts. Every NWS warning, watch and advisory for Sierra County then arrives as a push notification at the moment of issue, with Critical Alerts available for the most dangerous warnings. Forecast Bar also runs on iPad, Apple Watch, Mac and Apple TV.

Where do these alerts come from?

From the National Weather Service alert feed (api.weather.gov). NWS issues alerts by county and by forecast zone; this page lists every product that names Sierra County. Forecast Bar checks the feed continuously and this page refreshes within a few minutes of a change.

What is the difference between a watch, a warning and an advisory?

A warning means the hazard is occurring, imminent or very likely: act now. A watch means conditions are favourable for it to develop: prepare and stay informed. An advisory covers a hazard that is less serious than a warning but can still cause real inconvenience or danger if you are not ready for it.

Can I get this data as JSON?

Yes. /weather-alerts/ca/sierra-county.json returns the active alerts, the last 30 days and the 12-month counts for Sierra County, refreshed every minute. Please cache responses and credit National Weather Service as the source.

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Add Sierra County in Forecast Bar and every NWS warning, watch and advisory arrives as a push notification the moment it is issued, on iPhone, iPad, Apple Watch, Mac and Apple TV.

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