Sunrise 5:52 AM   Sunset 8:10 PM Moonrise 11:52 AM   Moonset 1:18 AM

  Print   HELP   Reset   Save   Recall  New

PZZ530 San Pablo Bay, Suisun Bay, The West Delta And The San Francisco Bay North Of The Bay Bridge- 853 Am Pdt Wed May 15 2024
Today - SW wind 10 to 15 kt. Waves around 2 ft or less. Tonight - SW wind 10 to 15 kt. Waves around 2 ft or less. Thu - SW wind 10 to 15 kt. Waves around 2 ft or less. Thu night - SW wind 10 to 15 kt. Waves around 2 ft or less. Fri - SW wind 10 to 15 kt, easing to 5 to 10 kt in the afternoon. Waves around 2 ft or less. Fri night - SW wind 10 to 15 kt. Waves around 2 ft or less. Sat - SW wind 10 to 15 kt. Waves around 2 ft or less. Sat night - SW wind 10 to 15 kt. Waves around 2 ft or less. Sun - SW wind 5 to 10 kt. Waves around 2 ft or less. Sun night - SW wind 10 to 15 kt. Waves around 2 ft or less.

PZZ500 853 Am Pdt Wed May 15 2024
Synopsis for the central california coast and bays including the Monterey bay - Greater farallones - .and cordell bank national marine sanctuaries - .
as surface high pressure over the eastern pacific ocean slightly weakens and retrogrades to the west, the pressure gradient will relax, moderate to fresh northwesterly breezes will prevail, and significant wave heights will continue to abate through Thursday. By Friday this surface high pressure builds and moves east, increasing northwesterly breezes and building wave heights through the weekend and into next week.

FXUS66 KSTO 150829 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 129 AM PDT Wed May 15 2024

SYNOPSIS
Warmest temperatures of the year so far are still expected to occur this afternoon, resulting in widespread moderate HeatRisk for the central and northern Sacramento Valley. Cooler, but still seasonably warm, weather then looks to continue through the end of the week, with closer to normal temperatures from the weekend into next week.

.DISCUSSION (Today through Saturday)...

As of early this morning, temperatures are beginning to cool diurnally. Early morning low temperatures are expected to dip into the 50s for most Valley and foothills locations and 40s to low 50s at higher elevations. Although, with less influence from onshore flow, portions of the northern Sacramento Valley and adjacent foothills locations do look to only fall into the lower 60s. The trough currently progressing through SoCal will continue to meander eastward today, allowing the rather robust offshore ridge to more directly influence interior NorCal. This shift aloft will likely cap any late day shower or thunderstorm potential.

As a result, high temperatures this afternoon look to make a run at the warmest the area has seen so far this year. Widespread 90s are expected throughout the Valley, with 40% to 70% probabilities of reaching triple digits for the northern and central Sacramento Valley. This is resulting in fairly widespread areas of moderate HeatRisk across the northern and central Sacramento Valley for today. Elsewhere at higher elevations, high temperatures also look to reach the 70s to 80s as well. Along with the heat, a breezy and dry northerly wind looks to filter through the northern and central Sacramento Valley, with some gusts of 20 to 25 mph possible through the afternoon.

Onshore flow then begins to dominate from this evening into the remainder of the week and the weekend. This regime will help to cool temperatures slightly and lead to some modest moisture recovery as well. This cooling trend looks to be further reinforced by a series of troughs ejecting out of the Pacific Northwest toward the northern Plains from the end of the week into the weekend. This flow pattern will indirectly affect interior NorCal by flattening the ridge and lowering heights aloft. As a result, afternoon Valley high temperatures generally look to cool into the upper 80s to 90s to round out the work week, with locally breezy south to west winds.
This slight cooling trend then looks to continue into the early weekend, although the passing trough to the northeast may lead to a bit stronger of a south to west breeze on Saturday, with occasional gusts 20 to 25 mph.

.EXTENDED DISCUSSION (Sunday THROUGH Wednesday)...

As the aforementioned series of troughs continue to progress, a secondary closed low over the eastern Pacific looks to gradually translate eastward toward the west coast through the weekend. The exact timing and resultant interaction with the troughing over the northern CONUS remains somewhat uncertain, but the majority of ensemble guidance is in agreement that large scale troughing aloft, in some capacity, will become the primary upper level influence in the West through early to mid next week. The exact evolution of the interaction between the two troughs will dictate the eventual impacts for interior NorCal, but at the very least, temperatures are expected to hold in the near to slightly above normal range next week. Current cluster analysis favors a continuation of mostly dry weather, but there is nonzero membership indicating some potential for a slightly wetter pattern (by mid-May standards) as well. As a result, we will be keeping an eye on the evolution of the anticipated trough interaction.

AVIATION

VFR conditions next 24 hours. Southwesterly surface wind gusts 20-30 kts in the west Delta and local northerly 15-25 kts in the Sacramento Valley 15Z-21Z, otherwise generally less than 12 kts.

STO WATCHES/WARNINGS/ADVISORIES
None.

toggle option: (graph/table)

Terminous
Click for Map
Wed -- 01:27 AM PDT     2.76 feet High Tide
Wed -- 02:18 AM PDT     Moonset
Wed -- 04:49 AM PDT     First Quarter
Wed -- 05:54 AM PDT     Sunrise
Wed -- 07:04 AM PDT     1.16 feet Low Tide
Wed -- 11:47 AM PDT     2.41 feet High Tide
Wed -- 12:51 PM PDT     Moonrise
Wed -- 07:47 PM PDT     -0.02 feet Low Tide
Wed -- 08:10 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION

Terminous, South Fork, Mokelumne River, California, Tide feet

Vulcan Island .5 mi E
Click for Map
Wed -- 02:17 AM PDT     Moonset
Wed -- 02:55 AM PDT     -0.00 knots Slack
Wed -- 04:49 AM PDT     First Quarter
Wed -- 05:21 AM PDT     -0.28 knots Max Ebb
Wed -- 05:54 AM PDT     Sunrise
Wed -- 07:53 AM PDT     0.00 knots Slack
Wed -- 10:20 AM PDT     0.40 knots Max Flood
Wed -- 12:51 PM PDT     Moonrise
Wed -- 01:14 PM PDT     -0.00 knots Slack
Wed -- 05:00 PM PDT     -0.47 knots Max Ebb
Wed -- 08:09 PM PDT     Sunset
Wed -- 08:47 PM PDT     0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION

Vulcan Island .5 mi E, San Joaquin River, California Current, knots

Full Color Weather Map

Link to Loop


Other links: GEOS-West     Contential US     Full GOES-East

Sacramento, CA,