textproduct: Sacramento

This forecast discussion was created in the public domain by the National Weather Service. It can be found in its original form here.

KEY MESSAGES

- Dry weather with patchy morning fog in the Valley through the week. - Pattern change late weekend and into early next week, with potential for precipitation.

..Saturday and onward

Dry conditions and seasonal temperatures on Saturday, with a change in the ridging over the southwestern United States come Sunday. Ensembles have started to pick up on a pattern change taking shape end of the weekend and into early next week that would break down the ridge and introduce precipitation chances. At this time, ECMWF and GFS ensembles have hinted at the possibility of widespread precipitation for the region, with a continued active pattern through all of next week. Probabilities at this time for over a quarter of an inch of precipitation are 30-40 percent for the Valley, and over 60 percent for the foothills, mountains, and Shasta county area. Confidence is low at this time on rain/snow amounts, timing, and breakdown of the ridge.

AVIATION

VFR conditions expected through the evening, with conditions turning IFR to MVFR as visibilities drop. Patchy dense fog around 05-06z for SAC, SMF, MHR, and MCC through 15-16z. Visibility reductions down a half mile at times for those locations. Areas in the northern San Joaquin area will see more widespread dense fog, with visibilities of a quarter mile or less. RDD and RBL will remain VFR through the TAF period.

STO WATCHES/WARNINGS/ADVISORIES

Dense Fog Advisory from 10 PM this evening to 10 AM PST Tuesday for Northern San Joaquin Valley.

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