Morro Bay, CA Marine Weather and Tide Forecast (2024)

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PZZ645 Point Piedras Blancas To Point Sal Westward Out To 10 Nm- 900 Pm Pdt Tue May 21 2024

Tonight - NW winds 10 to 15 kt in the evening, becoming 10 to 15 kt. Wind waves 1 to 3 ft. NW swell 6 to 8 ft at 10 seconds. Patchy fog.

Wed - NW winds 10 to 15 kt becoming 10 to 20 kt with local gusts to 25 kt. Wind waves 1 to 3 ft. NW swell 7 to 8 ft at 9 seconds. Patchy fog.

Wed night - NW winds 10 to 20 kt with local gusts to 25 kt in the evening, becoming 10 to 15 kt. Wind waves 2 to 4 ft. NW swell 5 to 7 ft at 9 seconds.

Thu - NW winds 10 to 15 kt, becoming 15 to 25 kt with gusts to 30 kt in the afternoon. Combined seas 6 to 8 ft dominant period 9 seconds.

Thu night - NW winds 15 to 25 kt. Combined seas 6 to 8 ft dominant period 9 seconds.

Fri - NW winds 10 to 15 kt. Wind waves 2 ft or less. NW swell 4 to 5 ft at 9 seconds.

Fri night - NW winds 10 to 15 kt. Wind waves 1 to 3 ft. NW swell 3 to 4 ft at 8 seconds.

Sat - NW winds 15 to 25 kt. Combined seas 4 to 5 ft.

Sun - NW winds 15 to 25 kt. Combined seas 4 to 5 ft.

7 Day Forecast for Marine Location Near Morro Bay, CA

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Area Discussion for - Los Angeles/Oxnard, CA

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FXUS66 KLOX 220658 AFDLOX

Area Forecast Discussion...UPDATED National Weather Service Los Angeles/Oxnard CA 1158 PM PDT Tue May 21 2024

SYNOPSIS
21/937 PM.

Increasing onshore flow with a persistent marine layer will likely bring a return of May Gray at the beaches on Wednesday.
Night through morning low clouds and fog will continue across the coastal and valleys, struggling to clear from the beaches during the afternoon. An upper-level trough of low pressure will dig south through Friday bringing a deepening marine layer, stronger onshore flow, and night through morning drizzle Thursday and Friday. Some clearing and warming is possible over the holiday weekend.

.SHORT TERM (TUE-FRI)...21/936 PM.

Broad upper-level troughing remains intact over the West this evening. The latest water vapor imagery indicates a weak boundary moving south across central California this evening. Cold air advection is scouring some clouds away from the Central Coast, but it appears there is not enough strength in the advective pattern to completely scour the marine layer stratus. Clouds continue to cling to the central California coast this evening and confidence is waning in more clearing on Wednesday. The latest model solutions suggest the cold air advective pattern fading away overnight. With onshore flow increasing on Wednesday and 1000-500 mb thickness values climbing across the area, signs point toward a return of clouds hugging the coast on Wednesday. The forecast trends a little more pessimistic for the low clouds coverage for Wednesday and now keeps a mention of low clouds partially clearing at the beach areas.

With low clouds and fog likely holding more firmly across the area, temperatures were nudged slightly cooler along the coast and closer to persistence. It would not be shocking to see a bit more cooling introduced into the forecast at the coast as the latest

-WRF solutions suggest a 3 mb onshore trend in the pressure gradients.

*** FROM PREVIOUS DISCUSSION ***

Thursday, the wide upper level trough will intensify, and onshore gradients will increase. Marine layer clouds will likely linger longer into the day, especially near the coast, and this will cause temperatures to trend downward by around 1 to 3 degrees.
Highs will be 3 to 6 degrees below normal, locally up to 10 degrees.

Friday a shortwave trough, embedded in the larger troughing pattern, will quickly pass over the region. This disturbance may support night to morning marine layer drizzle for coastal areas and a 5-10% chance of afternoon showers/thunderstorms for interior mountains. Significant onshore flow and a cooling airmass aloft will drop temperates to 6 to 10 degrees below normal (locally up to 13 degrees). Friday will likely be the coldest day of the forecast period, with daytime highs in the low- to- mid 60s for coasts, around 65-70 for valleys, and mid 70s for deserts.

.LONG TERM (SAT-TUE)...21/226 PM.

The

and

are in good agreement for the weekend into early next week. By Saturday, the shortwave trough will have exited the region, with the board upper level trough remaining.
Typical deep marine layer clouds are likely to extend across the coasts and valleys, with minimal chances of clearing for coastal areas. Onshore gradients will maintain gusty winds across the interior areas during afternoon and evening, particularly for the Antelope Valley and foothills.

Sunday through Tuesday, upper level heights are expected increase, resulting in a weak ridging pattern. The marine layer clouds will lower in height, due to the higher pressure, and will not reach as far inland. The warm airmass aloft combined with the reduction in the influence of marine layer clouds, will result in a general warming trend for all areas, excluding near coastal locations.

AVIATION
22/0655Z.

At 0505Z at KLAX, the marine layer was 1400 ft deep. The top of the inversion was at 4800 feet with a temperature of 16 C.

High confidence in KPMD, KWJF, and KPRB TAFs.

Moderate confidence in remainder of TAFs. Clearing could be an hour later than fcst and cig hgts may be off by +/- 300 ft.

KLAX...Moderate confidence in TAF. There is a 30 percent chc of SCT conds arriving at 21Z and a 20 percent chc of 22Z. Any east wind component will be less than 6 kt.

KBUR...Moderate confidence in TAF. There is a 15 percent chc of no cigs. Cig arrival time could be anytime between 09Z-12Z. SCT conds could arrive as late as 18Z (30 percent chc) or 19Z (20 percent chc)

MARINE
21/909 PM.

Moderate confidence in forecast, except low-moderate confidence for the inner waters N of Pt. Sal and in the western SBA Channel.

In the outer waters, Small Craft Advisory (SCA) level winds and seas will continue much of the time thru Sat. There may be a lull in the winds during the very late night thru morning hours, especially Thu night/Fri morning. For the waters north of Pt. Sal, there is a 30% chance of gale force wind gusts Wed afternoon/eve.

In the inner waters N of Pt. Sal, there is a 40-50% chance during the afternoon/eve hours Wed. Then,

level winds are likely during the afternoon/eve hours Thu and Sat.

In the inner water S of Pt. Sal, there is a 30% chance of

level winds in western portions of the SBA Channel this afternoon/eve, then a 40-50% chance during the afternoon/eve hours Wed thru Sat. Otherwise,

conds are not expected.

A long period south to southwest swell will continue to subside through Wed. The risk of larger than normal breaking waves nearshore and stronger currents near most harbor entrances will start to subside during this timeframe.

LOX WATCHES/WARNINGS/ADVISORIES
CA...Beach Hazards Statement in effect through Wednesday afternoon for zones 87-362-366. (See LAXCFWLOX).
PZ...Small Craft Advisory in effect until 3 AM PDT Friday for zones 670-673-676. (See LAXMWWLOX).

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Wind History for Port San Luis, CA

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Tide / Current for Morro Beach, Estero Bay, California

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Morro Beach, Estero Bay, California, Tide feet

Tide / Current for Port San Luis, California

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Port San Luis, California, Tide feet

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