Marine Weather and Tide Forecast for Clearlake, CA

Key Messages

* Fire Weather Watch in effect from 8 am PDT Sunday through 8 pm PDT Monday for Valley and Delta locations below 1000 feet.

* Today: -Dry weather, warm temperatures, and periodically breezy winds persist with areas of Minor HeatRisk in the Valley.

* Saturday: -Weather system begins to drop southward from Pacific NW.
-10-25% probability of isolated thunderstorms across northeast foothills and Sierra/southern Cascades from Interstate 80 northward.
-Temperatures cooling to near normal, with breezy winds throughout the day.

* Sunday - Monday: -Current ensemble trends indicate the expected weather system following an inside slider trajectory through the region.
-Gusty north to east winds expected to develop Sunday and Monday as this system progresses, with lingering breezy winds into Tuesday.
-Probability of gusts 40 mph or higher: --Sunday: 30-50%, highest along and west of I-5 in the Sacramento Valley.
--Monday: 20-40% across the central/southern Sacramento Valley and Delta.
-Critical fire weather conditions expected Sunday and Monday, due to the combination of gusty northerly winds and low relative humidity in the Valley and Delta.

* Tuesday - Thursday: -Warming trend expected early to mid next week, with areas of Moderate HeatRisk across the Valley.
-North to east winds expected to remain diurnally breezy while very dry conditions prevail.
-Elevated fire weather conditions anticipated.

Changes from previous forecast
-Moderate HeatRisk and elevated fire weather conditions looking to persist into the late week period.

AVIATION
VFR conditions expected to prevail over Valley TAF sites next 24 hours. Surface winds will increase in response to a upper level trough moving into the Great Basin. For sites in the Northern Sacramento Valley; surface winds from the north around 15 knots, gusting 25-30 knots beginning around 12z Saturday. Onshore flow in the Central/Southern Sacramento Valley, Delta, Northern San Joaquin Valley's increase to around 20 knots, gusting to 30 knots around 10z Saturday. Over the western Sierra slope, surface winds gusting up to 40 knots beginning around 12z tomorrow.

STO WATCHES/WARNINGS/ADVISORIES
Fire Weather Watch from Sunday morning through Monday evening for Carquinez Strait and Delta-Central Sacramento Valley in Glenn, Colusa, Yuba, Northern Sutter, and Butte County Below 1000 Ft-Northern Sacramento Valley to Southern Tehama County Line Below 1000 Ft-Northern San Joaquin Valley in San Joaquin and Stanislaus Counties Below 1000 ft-Southern Sacramento Valley in Yolo-Sacramento Far Western Placer, southern Sutter and Solano County Below 1000 Ft.