Friday, March5, 2021
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Marine Weather and Tides
Borrego Springs, CA

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:07AMSunset 5:45PM Thursday March 4, 2021 10:46 PM PST (06:46 UTC) Moonrise 12:00AMMoonset 10:45AM Illumination 60% Phase: Waning Gibbous; Moon at 21 days in cycle
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.
Marine Forecasts
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PZZ750 Coastal Waters From San Mateo Point To The Mexican Border And Out To 30 Nm- 1226 Pm Pst Thu Mar 4 2021
Tonight..Wind nw 10 to 15 kt. Wind waves 3 ft in the evening... Becoming 2 ft or less. Mixed swell W 2 to 4 ft at 12 seconds and S 3 to 4 ft at 18 seconds.
Fri..Wind nw 10 to 15 kt with gusts to 20 kt. Wind waves 2 ft or less...becoming 3 ft in the afternoon. Mixed swell W 3 to 5 ft at 13 seconds and S 3 ft at 17 seconds.
Fri night..Wind nw 10 to 15 kt with gusts to 20 kt. Wind waves 3 ft. SWell W 4 to 5 ft at 6 seconds.
Sat..Wind nw 10 to 15 kt with gusts to 20 kt. Wind waves 4 ft. SWell W 4 to 6 ft at 8 seconds.
Sat night..Wind W 10 to 15 kt. Gusts to 20 kt in the evening. Wind waves 3 to 4 ft in the evening...becoming 2 ft or less. SWell W 4 to 6 ft at 12 seconds.
Sun..Wind variable less than 10 kt...becoming sw 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 4 to 6 ft.
Sun night..Wind W 10 kt. Wind waves 2 ft or less. SWell W 3 to 5 ft.
Mon..Wind W 10 kt. Wind waves 2 ft or less. SWell W 4 to 6 ft.
Mon night..Wind W 10 to 15 kt. Gusts to 20 kt after midnight. Wind waves 2 ft or less...becoming 3 to 4 ft after midnight. SWell nw 4 to 6 ft. Slight chance of rain.
Tue..Wind W 10 to 15 kt. Wind waves 3 ft. SWell nw 4 to 5 ft. Slight chance of rain.
Tue night..Wind W 10 to 15 kt with gusts to 20 kt. Wind waves 4 ft. SWell W 4 to 6 ft. Chance of rain.
PZZ700 1226 Pm Pst Thu Mar 4 2021
Synopsis for the far southern california coast.. At 1 pm, a 1026 mb high was 350 nm southwest of san diego and a 1018 mb low was over western utah. Weak onshore flow will alternate with offshore flow today and tonight. Onshore flow will strengthen Friday afternoon and will continue through Tuesday. Some gusts could exceed 20 kt each afternoon and evening especially over the outer waters.


7 Day Forecast for Marine Location Near Borrego Springs, CA
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location: 33.15, -116.18     debug


Area Discussion for - San Diego, CA
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FXUS66 KSGX 050541 AFDSGX

Area Forecast Discussion National Weather Service San Diego CA 930 PM PST Thu Mar 4 2021

SYNOPSIS. High pressure will bring warmer weather again Friday with mostly sunny skies. A low pressure system moving inland through California on Saturday will strengthen onshore flow with cooling and gusty southwest to west winds in the mountains and deserts. Slight warming will return Sunday. For Monday through Thursday, a low pressure system over the eastern Pacific will move slowly toward the West Coast and bring chances of precipitation as early as Monday night and continuing through Thursday along with cool weather. Stronger onshore flow will also bring periods of strong gusty southwest to west winds in the mountains and deserts.

DISCUSSION. FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE . SAN DIEGO . WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO COUNTIES .

Update .

Skies were mostly clear this evening, and that will continue overnight except for perhaps a small bit of stratus along the coast towards sunrise Friday. Weak offshore flow will bring local east winds late tonight and early Friday to the west slopes of the mountains and through passes such as San Gorgonio/Banning Pass, but gusts should mostly under 40 MPH in windiest spots. Friday should be the warmest day this week for most areas with some temperatures topping 80 in the Inland Empire and especially the lower deserts, though Saturday might be even a bit warmer than Friday in the lower deserts. The pattern still look favorable for at least some precipitation in the Tuesday-Friday time frame, though probably not in any large amounts. Current forecast is on track, with no updates planned.

From Previous Discussion .

Warmer and drier weather will take hold on Friday as the upper level low that brought the wind and precipitation yesterday continues to move off to the east and a weak upper level ridge moves overhead. High temperatures will be 5-10 degrees above seasonal averages tomorrow, warmest in the inland valleys and low deserts. Weak offshore flow will develop in the mountains and foothills Friday morning, but will remain well below advisory strength with isolated gusts around 30-35 mph on the western slopes of the Cuyamaca Mountains and below the San Gorgonio Pass.

An upper level trough moves across central and northern CA on Saturday. While we won't see any precipitation from this system, it will bring a return of some marine layer low clouds, cooling, and gusty southwest to west winds in the mountains and deserts.

A low develops over the Gulf of Alaska and slowly drops south off the BC coast on Sunday. We will be sandwiched between the trough off the coat and a weak upper level ridge over interior So Cal and AZ on Sunday, which will maintain slightly below normal temperatures, especially west of the mountains, weak onshore flow, and a deeper marine layer.

The upper level low drops ever so slowly southward without much eastward progression early in the week. The marine layer could deepen enough for some drizzle or light rain as early as Monday, with a better chance on Tuesday morning as a weak short wave moves through the mean flow and into So Cal. Beyond about Tuesday morning, ensemble spread increases drastically with regards to the evolution of the upper low and timing of individual short wave passages. While it is too early to nail down specific details, the main point is that this large trough will very slowly progress east, meaning a multiple-day precipitation event is likely Tuesday through at least Thursday, with a good possibility of lasting into Friday. Right now ensemble consensus points to the heaviest precipitation sometime late Tuesday into Wednesday, followed by lighter showers on Thursday. There is some potential for rain continuing into Friday, but the 12Z suite of guidance has trended towards a faster eastern progression of the trough late in the week followed by another wave digging through the Great Basin Fri/Sat, leaving us dry.

This system will also be quite cold, with 700 mb temps ranging from -8 to -12C, coldest Wednesday and again on Friday. If this holds, we could see snow down to the 3000 ft level, possibly down to 2500 ft or lower during the mornings and in heavier showers. There is a good potential for accumulating snow on the I-15 through the Cajon Pass and upper portions of the Mojave Desert near the San Bernardino Foothills and I-8 through the San Diego Mountains.

AVIATION. 040440Z . Some patchy FEW-SCT low clouds around 1500 feet MSL may develop 07-15Z along the coast. Ceilings are unlikely at coastal terminals. Any clouds that develop will clear by 16Z. Otherwise, mostly clear skies with unrestricted vis will prevail through Friday.

MARINE. Northwest winds could occasionally gust above 20 knots in the outer waters during afternoons beginning Friday night and lasting through mid next week, with a lull on Sunday. Otherwise, no hazardous marine conditions are expected through Tuesday.

BEACHES. An increased northwest swell from 270 degrees will result in elevated surf and a high rip current risk at the beaches over the weekend. Surf will mainly range from 3-5 feet, with sets to 6 feet possible in southern San Diego County.

SKYWARN. Skywarn activation is not requested. However weather spotters are encouraged to report significant weather conditions.

SGX WATCHES/WARNINGS/ADVISORIES. CA . NONE. PZ . NONE.

PUBLIC . Maxwell (Update)/SS (Previous Discussion) AVIATION/MARINE/BEACHES . Connolly


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LJAC1 - 9410230 - La Jolla, CA 60 mi46 min NE 6 G 7 57°F 58°F1023.5 hPa (+0.0)
LJPC1 - La Jolla, CA (073) 60 mi26 min NE 4.1 G 7 2 ft

Wind History for La Jolla, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Palm Springs, Jacqueline Cochran Regional Airport, CA34 mi54 minNNW 310.00 miFair52°F34°F50%1023.6 hPa

Link to 5 minute data for KTRM

Wind History from TRM (wind in knots)
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Last 24hrNW3N4N3CalmNW5W4NE5NW5CalmCalmCalmNW4Calm3S8SE6SE6SE8SE8CalmW5NE4N3NW3
1 day agoCalmN4W4NW4N3CalmSW6NE3N4CalmS7CalmS8W6W9N4N14NW7CalmS6SE4CalmW5NW4
2 days agoN5N4N5N4W3N7N4N4N6NW6N54E3--S7SE9SE8S7SE6S4SE4W5NW3N4

Tide / Current Tables for La Jolla, Scripps Pier, California (2)
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La Jolla
Click for Map
Fri -- 12:07 AM PST     Moonrise
Fri -- 01:24 AM PST     5.12 feet High Tide
Fri -- 06:11 AM PST     Sunrise
Fri -- 09:01 AM PST     0.38 feet Low Tide
Fri -- 10:33 AM PST     Moonset
Fri -- 03:49 PM PST     2.87 feet High Tide
Fri -- 05:32 PM PST     Last Quarter
Fri -- 05:49 PM PST     Sunset
Fri -- 07:43 PM PST     2.31 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.85.15.14.63.92.91.91.10.60.40.50.91.52.12.52.82.92.82.52.42.32.52.93.4

Tide / Current Tables for La Jolla, Scripps Pier, California
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La Jolla
Click for Map
Fri -- 12:07 AM PST     Moonrise
Fri -- 01:07 AM PST     4.96 feet High Tide
Fri -- 06:11 AM PST     Sunrise
Fri -- 08:56 AM PST     0.42 feet Low Tide
Fri -- 10:33 AM PST     Moonset
Fri -- 03:48 PM PST     2.64 feet High Tide
Fri -- 05:32 PM PST     Last Quarter
Fri -- 05:49 PM PST     Sunset
Fri -- 07:12 PM PST     2.34 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.754.84.33.62.61.810.60.40.611.522.42.62.62.62.42.32.42.633.6

Weather Map
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GEOS Local Image of Southwest    EDIT
NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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