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FXUS66 KSTO 031118 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 318 AM PST Sun Dec 3 2023

Synopsis
Showers diminish today then drying with a warming trend early this week. Patchy dense fog will also be possible Monday and Tuesday mornings. Shower chances return Wednesday through Friday, with the potential for accumulating mountain snow.

Discussion
Upper level ridge will gradually amplify early this week with drier and warmer weather. Showers will diminish and shift northward through the day today. Snow levels remain very high above 7,500 and no snow is expected to and above pass level. A trough from the eastern Pacific will approach the area late Tuesday and move through Wednesday with shower chances returning.
Best chances will be over the mountains and foothills north of Interstate 80 where from 0.25-0.50 inches will be possible, less than 0.10 inches is expected at most Valley locations. Snow is not expected up to and above pass levels with high snow levels from 7,500-8,000 feet.

Patchy fog is possible at times Monday and Tuesday mornings over much of the Sacramento and northern San Joaquin valleys with Monday morning having the greatest potential for widespread dense fog. Some increase in cloud cover could limit fog Tuesday.

Afternoon highs today will be in the low to mid 60s throughout the Valley. Temperatures on Monday and Tuesday will warm into the mid to upper 60s.

.EXTENDED DISCUSSION (Thursday THROUGH Sunday)...
Another short wave trough progged across interior NorCal Thursday in WNW flow aloft. Bulk of dynamics and associated light precip look to be north of I-80. Drier weather sets in Friday/Saturday as EPAC upper ridging builds inland. Some morning valley fog may occur. Forecast uncertainty increases Sunday as models diverge with progression rate of upper ridge. NBM leans towards EC with faster progression, allowing weak short wave to bring some light QPF to portions of the CWA Saturday night into Sunday.

AVIATION
In Central Vly, mainly VFR except lcl MVFR/IFR possible in N Sac Vly. Isolated LIFR in FG possible til 18z. Lcl Sly sfc wind up to 20 kts in Sac Vly possible til 00z Mon. In fthls/mtns, areas MVFR/IFR with lcl LIFR obscuring trrn. Lcl S-W wind gusts up to 30 kts possible ovr hyr trrn.

STO WATCHES/WARNINGS/ADVISORIES
None.

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Bishop Cut
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Sun -- 04:39 AM PST     -0.11 feet Low Tide
Sun -- 07:04 AM PST     Sunrise
Sun -- 11:36 AM PST     3.04 feet High Tide
Sun -- 12:10 PM PST     Moonset
Sun -- 04:38 PM PST     1.37 feet Low Tide
Sun -- 04:45 PM PST     Sunset
Sun -- 09:29 PM PST     3.01 feet High Tide
Sun -- 10:47 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION

Bishop Cut, Disappointment Slough, San Joaquin River, California, Tide feet

Brandt Bridge
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Sun -- 03:07 AM PST     -1.12 knots Max Ebb
Sun -- 07:03 AM PST     Sunrise
Sun -- 07:42 AM PST     0.00 knots Slack
Sun -- 11:08 AM PST     0.61 knots Max Flood
Sun -- 12:09 PM PST     Moonset
Sun -- 01:58 PM PST     -0.00 knots Slack
Sun -- 04:46 PM PST     Sunset
Sun -- 04:57 PM PST     -0.47 knots Max Ebb
Sun -- 07:32 PM PST     0.00 knots Slack
Sun -- 09:46 PM PST     0.42 knots Max Flood
Sun -- 10:46 PM PST     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION

Brandt Bridge, San Joaquin River, California Current, knots

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