Marine Weather and Tide Forecast for Bethel Island, CA

DISCUSSION
Dry weather will continue through Friday as ridging remains over Northern California with Valley highs in the 60s, and cooler temperatures in the mountains. Warmer high temperatures will are likely across the northern and central Sacramento Valley today through Friday, with a 50 to 70% chance of high temperatures over 70 degrees.

Valley low temperatures are forecast to be in the 30s through the week, with a 20 to 30% chance of below freezing temperatures tomorrow morning in more rural areas of the Valley. Morning lows will gradually warm to the mid 30s to low 40s heading into the weekend. Patchy Valley fog and frost are forecast to accompany these chilly temperatures as well. Be sure to protect plants, people, and pets from the cold weather.

A few light sprinkles will be possible over the Valley on Friday ahead of the main inside slider that's expected to move through overnight Friday and into Saturday. This will bring about a return to gusty winds through Sunday with chances for light precipitation at higher elevations. Rain and snow are generally expected to be minimal, with amounts mainly above 3000 feet. Most (very light) accumulations will be limited to the Motherlode area, with expected totals generally below 0.25 inches. Snow will also be very light and limited to higher elevations for the most part, with less than 2 inches expected in most areas from HWY 50 and northward. Precipitation amounts continue to trend down, but due to the dynamic nature of this synoptic set up, a stray light shower or sprinkles cannot be ruled out over the Valley.

Gusty north to east winds will be the main story this weekend, with the strongest winds expected on Saturday. The National Blend of Models (NBM) shows a 65 to 90% chance of gusts at 40 mph or higher in the western portion of the Valley, and 50 to 75% chance of gusts at 50 mph or higher over the Sierra. Confidence is increasing that peak winds will arrive late Saturday morning with a secondary surge over the mountains in the evening.

.EXTENDED DISCUSSION (Sunday THROUGH Wednesday)...
The aforementioned inside slider will continue to bring gusty north to east winds over the mountains Sunday and into early Monday, accompanied by breezy north winds in the Valley. Currently the National Blend of Models indicates a 60 to 80% chance of gusts greater than 45 mph over the Sierra. Valley winds on Sunday are on track to be weaker compared to those on Saturday. North winds in the Valley will be focused along the western half of the Sacramento Valley and the Delta with a 60 to 80% chance for gusts greater than 30 mph. Make sure to secure any loose outdoor furniture/decorations and be cautious while driving near or around high profile vehicles.

Dry weather and cold morning temperatures return early next week as riding builds back over Northern California. Morning low temperatures will drop back into the 30s, with more widespread chances at near or below freezing in the Valley and frost.



AVIATION
VFR conditions prevail across interior NorCal, except local MVFR/IFR visibility from BR in the southern Sacramento/northern San Joaquin valleys from 09Z-18Z Thursday. In the Valley, surface winds generally at or below 12 kts, except local northerly surface winds to 15 kts in the northern Sacramento Valley through 00Z Thursday. In the foothills/mountains, north to east surface winds 15 to 25 kts through 20Z Thursday.



STO WATCHES/WARNINGS/ADVISORIES
None.