November 29, 2021 – Cool mornings with local fog in the Valley and mild afternoons expected over the next week. Dry weather continues. Locally breezy north to east winds Tuesday through early Wednesday.
Discussion
IR satellite shows clear skies across all of California early this morning with strong high pressure influencing much of the SW CONUS. Areas of locally dense fog continue to develop across the Central Valley, mainly from KCIC southward. Short term guidance, aided by persistence forecasting, suggest any reduced visibilities due to fog development with improve by mid morning.
High pressure will continue over NorCal through much of the week which will continue the chances for patchy Valley fog in the mornings. Winds do increase slightly Tuesday into Wednesday as a weak system moves into the Central US which may limit fog potential to the southern most portion of the CWA Wednesday morning.
The locally breezy north winds develop across the northern Valley and surrounding areas Tuesday afternoon, with breezy northeast to east winds over the eastern mountains and foothills Tuesday night into early Wednesday. With the recent green up we have seen, fuels do not look receptive to warrant any fire weather concerns.
Overall for temperatures, expect near average low temperatures and above average highs each day through the near term period. Dry.
Extended Discussion (Friday through Monday)
High pressure remains the dominant synoptic feature through most of the extended forecast period. This will result in dry weather with above normal high temperatures Friday through Sunday. Upper ridge forecast to retrograde offshore Monday, as short wave trough moves into NorCal bringing of a chance of widespread, but mainly light, precipitation.