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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 819 Am Pdt Tue Oct 3 2023
Today..SW winds 5 to 10 knots...increasing to 10 to 15 knots this afternoon.
Tonight..W winds 5 to 10 knots.
Wed..NE winds 10 to 15 knots.
Wed night..W winds around 5 knots.
Thu..NE winds 5 to 10 knots.
Thu night..W winds 5 to 10 knots.
Fri..W winds 5 to 10 knots.
Sat..W winds 5 to 10 knots.

PZZ500 819 Am Pdt Tue Oct 3 2023
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries...
breezy northwest winds continue into midweek, but will reduce and become light for the late week. Moderate period southerly swell 12 to 14 seconds persists through the week, alongside a shorter period northwesterly swell at 8 to 10 seconds. A longer period northwesterly swell moves into the waters today but becomes moderate into the end of the week.

FXUS66 KSTO 031043 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 343 AM PDT Tue Oct 3 2023


Synopsis
Dry and warming conditions this week. Occasional breezy north wind.

Discussion
Upper trough that pushed through NorCal during the past weekend is currently exiting the Great Basin Region into the Rockies.
Unseasonably strong upper high pressure is over the eastern Pacific and will build east across the Western States through the week. A strong pressure gradient will develop over the area today through Wednesday between these two features with breezy north winds down the Sacramento Valley and breezy northeast winds over the foothills, especially through canyons and gaps with wind gusts up to 30 mph possible at times. Some locally elevated fire conditions are possible, but recent rains will help mitigate fire weather concerns. Lighter winds are expected Thursday and Friday.

Increasing heights along with offshore flow pattern will bring a warming trend through the week with high temperatures reaching much above normal levels by the end pf the week. Many Valley locations will reach 90 degrees or even the low 90's Wednesday through Friday which will be 10 to 15 degrees above normal.

.EXTENDED DISCUSSION (Saturday THROUGH Tuesday)...
Dry with above normal high temperatures Saturday as NorCal on backside of progressing upper ridge. Heights lower Sunday into Monday as Pacific frontal system and associated short wave trough approaches. Given amplitude of downstream ridge, NBM seems too progressive with onset of precip Monday morning, as deterministic guidance does not spread precip into NW portions of CWA until aft 06z Tue, then mainly light QPF across most of the forecast area Tuesday. Cooling trend through the extended with below normal highs Monday/Tuesday.

AVIATION

VFR conditions over interior NorCal next 24 hrs. Areas N-E sfc wind up to 20 kts with lcl gusts to 30 kts possible aft 20z.

STO WATCHES/WARNINGS/ADVISORIES
None.

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