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Marine Weather and Tides Chico, CA Version 3.4

NOTICE 10/9/2019 Updated the Marine Zones. 9/4/2019 Fixed the weather maps due to NOAA moving them. 7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports. 6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

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Sunrise 7:19AM

Sunset 4:45PM

Sunday December 15, 2019 3:21 AM PST (11:21 UTC)

Moonrise 8:32PM

Moonset 10:30AM

Illumination 86%

NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

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7 Day Forecast for Marine Location Near Chico, CA

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Area Discussion for - Sacramento, CA

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FXUS66 KSTO 151058 AFDSTO

Area Forecast Discussion National Weather Service Sacramento CA 258 AM PST Sun Dec 15 2019

SYNOPSIS. Scattered snow showers over the Sierra will linger overnight with drier weather returning to the region for Sunday into early next week. A weak system moves through mid-week with additional precipitation chances into next weekend.

DISCUSSION. With the base of the shortwave trough already into central Nevada, much of the snow shower activity over the Sierra has begun to wind down. Recent KDAX radar imagery does show some weak echoes, mainly south of Highway 50. With cold advection in the wake along with decreasing cloud cover, many Valley locations have cooled off considerably relative to previous days. Current overnight temperatures run from the mid 30s across the northern Sacramento Valley to the mid 40s in the northern San Joaquin Valley given a bit more wind. The light breezes may inhibit any pronounced fog development with the GOES-17 nighttime fog product supporting this notion. 06Z HREF probabilities show some enhanced values from Marysville southward to near Stockton so have kept patchy fog in the forecast through mid-morning.

Today will mark the start of a brief period of dry weather across northern California which continues through Tuesday. High temperatures remain rather close to climatology with some cool mornings ahead. Decreasing winds and cloud cover support readings in the 30s across the Valley, roughly 2 to 4 degrees below average. The usual cool spot will be mountain locales as overnight lows regularly drop into the teens and 20s. Overall, expect some patchy Valley fog to form each morning given the amount of moisture on surfaces, especially from north of Sacramento down to Turlock.

There will likely be an increase in cloud cover Tuesday ahead of a closed low offshore. Warm advection precipitation is forecast to reach western portions of the Valley, Coastal Range, and Delta region by late Tuesday night. The guidance has continued to struggle with the handling of the system and how much impact it will have. A number of GFS runs favor a wetter scenario, particularly I-80 southward while the ECMWF has either been dry, or more recently carries light precipitation. Will continue to favor a low impact event with lower Valley rainfall amounts and minimal issues across the mountains. Future model cycles will hopefully iron out these differences in the upcoming days. ~BRO

EXTENDED DISCUSSION (Thursday THROUGH Sunday). Ensembles in reasonable agreement that short-wave ridging will amplify and shift east later this week as upstream trough deepens over the eastern Pacific. Precipitation chances remain focused across the far northern portion of the forecast area along a nearly stationary frontal boundary late in the week, but both GFS and EC ensembles indicate an upswing in QPF later Saturday into Sunday as a cold front finally swings onshore ahead of the approaching trough. Snow levels forecast to lower to around 3500-4500 feet on Sunday leading to an increasing risk for travel impacts across the mountain passes.

AVIATION. VFR conditions predominate the next 24 hours except for local MVFR vicinity scattered -SHSN over the northern Sierra Nevada until around 14Z, and local MVFR conditions in the Central Valley 14Z- 19Z. Surface winds at TAF sites remain under 10 knots.

STO WATCHES/WARNINGS/ADVISORIES. Winter Weather Advisory until 4 AM PST early this morning for West Slope Northern Sierra Nevada-Western Plumas County/Lassen Park.

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Weather Reporting Stations

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Airport Reports

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Airport	Dist	Age	Wind kt	Visibility	Sky/Weather	Temp	DewPt	Humidity	Pressure
Chico Municipal Airport, CA	3 mi	26 min	N 0	10.00 mi	Fair	37°F	37°F	100%	1018.6 hPa
Oroville Municipal Airport, CA	21 mi	28 min	N 0	10.00 mi	Fair	40°F	37°F	89%	1018.8 hPa

Link to 5 minute data for KCIC

Wind History from CIC (wind in knots)

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Tide / Current Tables for Sacramento #4, Sacramento River, California

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Tide / Current Tables for Clarksburg #4, Sacramento River, California

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Weather Map

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GEOS Local Image of CentralWestCoast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East

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Wind Forecast for Sacramento, CA (6,6,7,8)

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Ground Weather Radar Station Beal AFB, CA

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