Sunrise 6:12 AM   Sunset 7:55 PM Moonrise 10:13 PM   Moonset 6:32 AM

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PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 815 Am Pdt Fri Apr 26 2024
.small craft advisory in effect through late tonight - .
Today - NW winds 20 to 30 knots with gusts up to 25 knots. Tonight - W winds 15 to 20 knots with gusts up to 25 knots. Sat - W winds 10 to 15 knots. Sat night - W winds 10 to 20 knots with gusts up to 25 knots. Sun - W winds 10 to 15 knots. Sun night - W winds 10 to 20 knots with gusts up to 25 knots. Mon - W winds 10 to 15 knots. Tue - W winds 10 to 15 knots.

PZZ500 815 Am Pdt Fri Apr 26 2024
Synopsis for the central california coast and bays including the Monterey bay - Greater farallones - .and cordell bank national marine sanctuaries - .
a weak cold front will bring strong northwesterly winds to the waters through the weekend. Gale force gusts are to be expected through the weekend, particularly over the coastal waters. Light rain will be possible over the waters today as a result of the passing weak cold front. Moderate period northwesterly swell will continue to move through the waters through Saturday with a new, longer period northwesterly train arriving this afternoon.

FXUS66 KSTO 260954 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 254 AM PDT Fri Apr 26 2024


Synopsis
Mountain snow continues through the evening with thunderstorm chances today, highest over the foothills and mountains. Mild and warmer weather in store this weekend into early next week.

Discussion
Showers are ongoing over the Sierra and expected to continue through the morning. Heaviest snowfall is expected late this morning as the trough continues to build into the Great Basin.
Snow levels are 6000 to 7000 feet, lowering throughout the day.
NBM probabilities show a 15-35% chance of additional snow amounts of 4 inches or greater, primarily south of Hwy. 50. Currently, there are 15 to 30 MPH wind gusts over the Sierra and will continue through the morning before tapering down as the snowfall tapers off. Impacts are expected to be minimal but be sure to be cautious if planning mountainous travel as roads may be slick.

Today's precipitation will be showery in nature with the majority of precipitation landing over the foothills and mountains. NBM probabilities show a 15-35% chance of amounts greater than 0.25" in the foothills and 45-75% chance over the mountains. The exception to this is any thunderstorm development that may produce localized brief heavy rain showers. Forecast shows a 15-30% chance of thunderstorm development, highest chances in the afternoon and evening. With any developed thunderstorm, lightning, brief heavy rain showers, small hail, and gusty winds are possible. Latest hi-res forecast model runs shows scattered showers north of I-80 over the mountains and foothills this morning with stronger storms possible early this afternoon through the evening.

By late this evening, snow showers will have tapered off as ridging begins to build over the area Saturday morning.
Temperatures begin to warm and by Sunday, afternoon highs will be in the mid to upper 70s across the Valley with continued warm weather in store for early next week. Monday will see breezy north to west winds as northerly flow strengthens under the ridge.

.EXTENDED DISCUSSION (Tuesday THROUGH Friday)...

Quasi-zonal flow over EPAC Tuesday into Wednesday as embedded short wave troughs remain north of the CWA Deeper upper lows progged through the PacNW Thursday into Friday with associated troughing extending into far northern portions of CA. NBM depicting some low POPs over the Shasta mountains Thursday into Friday. Downward trend in temperatures expected through the extended but remaining above normal.

AVIATION

Pac storm will bring a threat of shwrs, mtn snow shwrs, and isolated thunderstorms over interior NorCal thru 04z Sat. In Central Vly/Delta, mainly VFR next 24 hrs except isolated MVFR possible thru 03z Sat in shwrs/tstms. Sfc wind mainly at or below 12 kts except vcnty of Delta and N San Joaquin Vly SW-W sfc wind 15-20 kts with lcl gusts up to 25 kts possible thru 05z Sat.
Foothills/mtns areas MVFR/IFR in precip thru 04z Sat. Snow levels 5500-6500 feet. Areas W-NW sfc wind gusts up to 30 kts possible over mtns thru 00z Sat.

STO WATCHES/WARNINGS/ADVISORIES
None.

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