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The Latest NWS Regional Area Forecast Discussions
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NWS Area Weather Forecast Discussion
County Warning Area [CWA]: STO Regional NWS Weather Office: Sacramento, CA 354 FXUS66 KSTO 192043 AFDSTO Area Forecast Discussion National Weather Service Sacramento CA 1243 PM PST Thu Feb 19 2026 For additional details on weather and expected impacts over the next 7 days, please visit weather.gov/sto/briefing. .KEY MESSAGES... - Cold storm brings continued dangerous travel impacts to the mountains and foothills with heavy snow and gusty winds today - Mostly dry and colder temperatures Friday and Saturday with a few lingering showers over the northern mountains - Warmer storm brings additional rounds of breezy southerly winds, precipitation and mountain snow Sunday through mid next week with higher snow levels && .DISCUSSION... ...Today through Saturday... Current RADAR imagery illustrates continued snowfall over the Sierra Nevada and southern Cascades foothill and mountain areas this afternoon. The majority of precipitation has ended for the Valley and northern zones, however continued dangerous travel conditions are forecast for the Sierra and southern Cascades mountains and foothills through this afternoon as periods of moderate to heavy snow continue to fall today. The Winter Storm Warning has been cancelled for the Coast Range, Shasta County mountains, northern Sacramento Valley and Burney Basin as the heavier snow has moved out of the area, and the warning remains in effect for the rest of our mountains and foothills until 10 PM this evening. Winds have been gradually tapering off today, and the Wind Advisory was also cancelled early. Some lingering breezy conditions may be observed through the rest of the day, however the strongest winds have subsided. Precipitation will continue to taper off later today and then drier weather returns for Friday and Saturday. Very cold temperatures are forecast tonight into Friday morning and again Friday night into Saturday morning. Friday is expected to have the coldest morning lows, and we have issued Cold Weather Advisories and Freeze Warnings to address the impacts from the cold weather. Cold weather will be especially impactful for those in the mountain and foothill communities that are without power from the storm. Lighter showers and snow showers will be possible mainly over the northern portion of our forecast area on Saturday before a warmer system moves in on Sunday. ...Sunday into Next Week... Ensemble guidance indicates a warmer system arriving later this weekend that may bring additional rounds of rain and mountain snow into next week, along with periodically breezy southerly winds. The snow levels with this storm will be much higher than the current one, with the latest guidance showing snow levels initially around 4000-5000 feet on Sunday, rising to 6000-7000+ feet Sunday night through Tuesday, and then lowering down to 5000- 6000 feet Wednesday. Slick roads and travel delays will be possible with this next storm. Be sure to check back for updates as we get closer! && .AVIATION... VFR conditions this afternoon, with a slight chance for MVFR conditions due to mist or fog in the Sacramento area overnight. MVFR/IFR conditions continue in the mountains through around 12z Friday due to lingering snowfall. Southerly Valley wind gusts up to 20 kts and mountain gusts up to 40 kts through 06z Friday, then winds generally below 12 kts for the remainder of the forecast period. && .STO WATCHES/WARNINGS/ADVISORIES... Freeze Warning from midnight tonight to 9 AM PST Friday for Carquinez Strait and Delta-Central Sacramento Valley-Northern Sacramento Valley-Northern San Joaquin Valley-Southern Sacramento Valley. Winter Storm Warning until 10 PM PST this evening for Motherlode- Northeast Foothills/Sacramento Valley-West Slope Northern Sierra Nevada-Western Plumas County/Lassen Park. Cold Weather Advisory from midnight tonight to 9 AM PST Friday for the Sacramento Valley, foothills and mountains. && $$
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