Tuesday, September29, 2020
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Marine Weather and Tides
Descanso, CA

Version 3.4
NOTICE
8/26/2020 The 7 day forecast is taking about 5 seconds to load but it will eventually load. NOAA is still working on it.
8/18/2020 NOAA continues to have trouble. Wind guest will occasionally be left off graphs. I am working with NOAA to resolve the issue.
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
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.

Sunrise 6:39AMSunset 6:36PM Monday September 28, 2020 9:13 PM PDT (04:13 UTC) Moonrise 5:25PMMoonset 3:36AM Illumination 90% Phase: Waxing Gibbous; Moon at 12 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- 139 Pm Pdt Mon Sep 28 2020
Tonight..Wind nw 10 kt. Wind waves 2 ft or less. Mixed swell W 2 ft at 10 seconds and sw 2 ft at 19 seconds.
Tue..Wind nw 10 to 15 kt. Wind waves 2 ft or less. Mixed swell nw 2 to 3 ft at 10 seconds and sw 2 to 3 ft at 19 seconds.
Tue night..Wind nw 10 kt in the evening... Becoming variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 1 to 3 ft at 11 seconds and sw 2 to 3 ft at 18 seconds.
Wed..Wind nw to 10 kt. Gusts to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 13 seconds and sw 2 to 3 ft at 17 seconds.
Wed night..Wind nw to 10 kt in the evening... Becoming variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 12 seconds and sw 2 to 3 ft at 16 seconds.
Thu..Wind variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 3 ft and sw 2 ft.
Thu night..Wind variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and sw 2 ft.
Fri..Wind variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and sw 2 ft.
Fri night..Wind variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and sw 2 ft.
Sat..Wind variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and sw 2 ft.
Sat night..Wind variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and sw 1 to 2 ft.
PZZ700 139 Pm Pdt Mon Sep 28 2020
Synopsis for the far southern california coast..At 2 pm, a 1027 mb high was about 585 miles west of medford oregon, 1036 mb high was over western Montana and a 1011 mb low was over the santa ana mountains. Weak onshore flow will continue through most of this week, though stronger northwest winds will occur near san clemente island Tuesday afternoon and evening. Patchy fog could develop over the coastal waters late tonight.


7 Day Forecast for Marine Location Near Descanso, CA
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location: 32.87, -116.63     debug


Area Discussion for - San Diego, CA
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FXUS66 KSGX 290401 AAA AFDSGX

Area Forecast Discussion . Updated Aviation section National Weather Service San Diego CA 901 PM PDT Mon Sep 28 2020

SYNOPSIS. Dry, offshore flow will continue through Tuesday, with areas of gusty east to northeast winds, low relative humidity and increasing heat. Critical fire weather conditions will occur through Tuesday near the coastal foothills, where winds will be strongest. The hottest and driest conditions will be felt on Wednesday as the ridge aloft peaks, though winds will be weaker. Slow cooling will follow later in the week as the upper high weakens.

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

. Heat Advisories in effect Tuesday through Thursday west of the mountains . . Red Flag Warning for the mounains and coastal foothill areas .

Low clouds were forming over the CA Bight this evening and were remaining mostly just offshore through 8 PM PDT. The 00Z Miramar sounding had a 7C inversion based near 1150 Ft MSL. winds aloft had veered back to south or west below 7K FT. Surface dewpoints were up along the coast, well into the 60s F. Winds were mostly light and highly variable across the region.

The only potential forecast problem tonight involves the low clouds and possible fog formation along the coast. Based on the sounding, limited nearby observations and coastal cams, the IR satellite signatures should be low clouds and not fog, at least at this point. This could lower overnight and become fog, but it would most likely be over the coastal waters and perhaps beach areas with a general offshore drift forecast. The sfc pressure gradients had a slight offshore trend as well. Orange County appears to have the greatest probability of fog formation overnight based on repeated runs of the HRRR model. Trends are not there yet though, so will not jump on the fog train at this time. Tomorrow is shaping up to be quite hot inland, based on observations today and continued heating. So the current forecast may be a few degrees shy of the mark, especially for those land-locked valley areas. No forecast updates are planned.

From previous discussion .

High pressure aloft will prevail this week over the far western US, with a generally weak Santa Ana wind event through Tuesday. The hottest weather will come Tuesday-Thursday, especially Wednesday, with 850 mb temps reaching the 25-26 deg C range, combined with low RH and very dry soils/vegetation to help maximize surface heating. ECMWF ensemble solutions show temps likely reaching 105 or higher in parts of the Inland Empire and possibly even hottest parts of inland Orange County Tue and Wed. The lower deserts will reach 110 or higher in hottest locations. One concern with the temperatures is that parts of the San Diego County mesas could reach 100, especially Wed when the hot airmass gets closest to the coast, so the heat advisory has been extended to the San Diego County coastal zone for Tue-Thu. Winds will increase Tue morning in places normally prone to easterly winds in the San Diego and Riverside County mountains and valleys, with some gusts around 45 MPH possible Tuesday morning, based on output from the Cansac WRF and our local San Diego NWS WRF.

When will the heat end? Cooling will be a gradual process as the ridge will continue to prevail over the West, while a broad long- wave trough prevails over the Midwest and northeastern US. However, the upper high will gradually weaken late this week, so a cooling trend should begin Thursday or, more likely, Friday and continue through the weekend. Longer range progs show some disturbances off the coast next week, and while they are unlikely to have much moisture with them, some ensemble solutions suggest a small chance of light precipitation the second half of next week, but nothing that would have an impact on our vegetation or soils.

AVIATION. 290355Z . Coast . Brief CIGs possible through 14Z Tuesday at KSAN, KCRQ and KSNA with bases 005-010, but confidence is low. Best chance will be at KCRQ. CIGS are most likely to stay over the coastal waters and some sections of the coastline.

Valley/Mountains/Deserts . Clear with unrestricted vis through Tuesday. East winds 15-20 kts gusting to 35 kts in the mountains and foothills. There will be pockets of LLWS and MOD up/downdrafts west of the mountains through Tuesday afternoon, strongest in San Diego County.

MARINE. Northwest winds with occasional gusts around 20 kts in the outer waters Tuesday afternoon and evening. Otherwise, no hazardous marine conditions are expected through Friday.

BEACHES. On Tuesday and Wednesday, a southwesterly swell will be generate above average surf of 3-6 ft at Orange County beaches, and 3-5 ft surf at San Diego County beaches. Strong rip currents are likely.

FIRE WEATHER. The offshore flow will bring periods of gusty east-to-northeast winds through Tuesday. Winds for northern areas, along and below the slopes of the San Bernardino County mountains and below the Cajon Pass are expected to be weaker, with peak gusts of 35 mph or less on Tuesday. For the coastal slopes of the mountains into adjacent valley areas in Riverside and San Diego Counties, and in the Inland Empire below the San Gorgonio Pass, east winds will peak Tuesday morning with gusts locally around 45 mph. Minimum RH for the mountains into the inland valleys will fall to to 8-12% or even a little lower Tuesday. Thus, Tuesday should have critical fire weather conditions in San Diego and Riverside County mountains west into the valleys, and the Red Flag Warning was extended there through 5 PM Tue. Temperatures will peak, and RH will be lowest Wednesday, though winds will be much lighter. Elevated fire weather conditions will persist inland into the weekend.

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

SGX WATCHES/WARNINGS/ADVISORIES. CA . Red Flag Warning until 5 PM PDT Tuesday for Riverside County Mountains-Including The San Jacinto Ranger District Of The San Bernardino National Forest-San Bernardino and Riverside County Valleys -The Inland Empire-San Diego County Inland Valleys-San Diego County Mountains-Including The Palomar And Descanso Ranger Districts of the Cleveland National Forest-San Gorgonio Pass Near Banning.

Heat Advisory from 10 AM Tuesday to 8 PM PDT Thursday for Orange County Inland Areas-San Bernardino and Riverside County Valleys-The Inland Empire-San Diego County Coastal Areas- San Diego County Valleys.

Red Flag Warning until 5 PM PDT this afternoon for San Bernardino County Mountains-Including The Mountain Top And Front Country Ranger Districts Of The San Bernardino National Forest.

PZ . NONE.



PUBLIC/FIRE WEATHER . 10/Maxwell AVIATION/MARINE . Moede


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SDBC1 - 9410170 - San Diego, CA 31 mi62 min 72°F1013.1 hPa
LJPC1 - La Jolla, CA (073) 33 mi54 min N 4.1 G 6 2 ft
LJAC1 - 9410230 - La Jolla, CA 33 mi62 min N 4.1 G 6 69°F 68°F1013 hPa
TIXC1 - Tijuana River Reserve, CA 33 mi89 min Calm 68°F 1013 hPa65°F
46254 34 mi48 min 71°F2 ft
46235 35 mi48 min 69°F3 ft
46266 35 mi44 min 69°F 71°F3 ft
46225 - Torrey Pines Outer, CA (100) 41 mi48 min 69°F3 ft
46258 47 mi48 min 72°F5 ft
46224 - Oceanside Offshore, CA (045) 49 mi48 min 72°F3 ft
46232 - Point Loma South, CA (191) 49 mi48 min 72°F3 ft

Wind History for USS MIDWAY South Navy Pier, San Diego, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Gillespie Field Airport, CA18 mi19 minW 510.00 miFair72°F62°F73%1013.5 hPa
Campo, CA19 mi22 minNE 4 mi68°F30°F25%1013 hPa
Ramona, Ramona Airport, CA19 mi21 minN 010.00 miFair66°F57°F75%1013.4 hPa

Link to 5 minute data for KSEE

Wind History from SEE (wind in knots)
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Last 24hrW5W4W4CalmW3CalmCalmW3CalmNW3--CalmCalmCalmCalm5W8W8CalmW9W6NW5W5W6
1 day agoCalmCalmCalmCalmN4CalmN3N4CalmCalmCalmNE3CalmCalmCalm5SW9SW8SW8SW7SW8SW6SW3W4
2 days agoW4W3CalmW4CalmCalmSE4CalmCalm3N3CalmCalmCalmSW5CalmS7S9S9SW7SW7SW6SW3W4

Tide / Current Tables for National City, San Diego Bay, California
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National City
Click for Map
Tue -- 03:02 AM PDT     -0.22 feet Low Tide
Tue -- 04:35 AM PDT     Moonset
Tue -- 06:41 AM PDT     Sunrise
Tue -- 09:17 AM PDT     5.61 feet High Tide
Tue -- 03:06 PM PDT     1.28 feet Low Tide
Tue -- 05:56 PM PDT     Moonrise
Tue -- 06:34 PM PDT     Sunset
Tue -- 08:58 PM PDT     6.14 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.61.20.2-0.20.11.12.53.955.65.54.73.72.51.71.31.52.43.64.95.86.15.84.8

Tide / Current Tables for San Diego, California (2)
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San Diego
Click for Map
Tue -- 02:52 AM PDT     0.00 feet Low Tide
Tue -- 04:36 AM PDT     Moonset
Tue -- 06:41 AM PDT     Sunrise
Tue -- 09:13 AM PDT     5.37 feet High Tide
Tue -- 02:56 PM PDT     1.43 feet Low Tide
Tue -- 05:57 PM PDT     Moonrise
Tue -- 06:35 PM PDT     Sunset
Tue -- 08:54 PM PDT     5.87 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.41.10.300.41.42.73.94.95.45.24.53.52.41.71.41.82.63.74.85.65.95.54.5

Weather Map
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wmap_P
GEOS Local Image of Southwest    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
Ground Weather Radar Station San Diego, CA
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