Monday, March27, 2017 L-36.com


Marine Weather and Tides
Potrero, CA

Version 3.4
What's New / NOTES
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:38AMSunset 7:04PM Monday March 27, 2017 3:42 AM PDT (10:42 UTC) Moonrise 6:34AMMoonset 6:54PM Illumination 0% Phase: New Moon; Moon at 29 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- 225 Am Pdt Mon Mar 27 2017
.small craft advisory in effect from 1 pm pdt this afternoon through Tuesday evening...
Today..Wind W 10 to 20 kt with gusts to 30 kt. Wind waves 4 ft. SWell W 3 to 5 ft at 10 seconds.
Tonight..Wind nw 10 to 20 kt with gusts to 30 kt. Wind waves 5 ft. SWell W 5 to 8 ft at 8 seconds.
Tue..Wind variable less than 10 kt...becoming W 10 to 15 kt with gusts to 20 kt in the afternoon. Wind waves 2 ft or less... Becoming 3 to 4 ft in the afternoon. SWell W 4 to 6 ft at 10 seconds.
Tue night..Wind nw 10 to 15 kt in the evening... Becoming variable less than 10 kt. Wind waves 3 ft in the evening... Becoming 2 ft or less. SWell W 3 to 4 ft at 10 seconds.
Wed..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 2 to 3 ft at 10 seconds.
Wed night..Wind nw 10 kt with gusts to 15 kt in the evening... Becoming variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft.
Thu..Wind variable less than 10 kt...becoming W 10 kt with gusts to 15 kt in the afternoon. Wind waves 2 ft or less. SWell W 2 to 3 ft.
Thu night..Wind W 10 to 15 kt with gusts to 20 kt. Wind waves 4 ft. SWell W 4 to 7 ft. SWell sw 3 ft.
Fri..Wind nw 10 kt with gusts to 15 kt. Wind waves 2 ft or less. SWell W 5 to 7 ft.
Fri night..Wind nw 10 to 15 kt. Gusts to 20 kt in the evening. Wind waves 3 ft in the evening...becoming 2 ft or less. SWell W 4 to 6 ft.
PZZ700 225 Am Pdt Mon Mar 27 2017
Synopsis for far southern california coast.. At 1 am... A 1027 mb high was 900 nm west of san diego and a 1010 mb low coverd southern nevada. Northwest winds will strengthen and northwest swell will build today combining to produce hazardous boating conditions today and tonight. Winds will decrease Tuesday but with some gusts in the outer waters exceeding 20 kt. SWell will decrease more slowly later Tuesday. Weak onshore flow likely on Wednesday before winds become strong again Thursday and Friday leading to hazardous boating conditions.

7 Day Forecast for Marine Location Near Potrero, CA
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location: 31.69, -116.65     debug


Area Discussion for - San Diego, CA
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Fxus66 ksgx 270413
afdsgx
area forecast discussion
national weather service san diego ca
913 pm pdt Sun mar 26 2017

Synopsis
Partly cloudy and mild overnight with increasing wind over the
mountains and deserts. A low pressure trough passing to the
northeast will bring cooling Monday, and a chance of a few light
showers along and west of the mountains. Westerly winds will become
quite gusty over the mountains and deserts, turning north and then
northeasterly early Tuesday. Warmer on Tuesday and Wednesday, then
cooler Thursday and Friday as strong onshore flow develops.

Discussion For extreme southwestern california including orange...

san diego... Western riverside and southwestern san bernardino
counties...

ir satellite imagery this evening showed areas of low clouds along
and west of the mts, and patchy higher clouds drifting southeast
over socal. The 00z miramar sounding had a modest increase in
moisture and was quite stable above 3000 ft. Surface pressure
gradients were holding steady around 6 mbs onshore ksan to the
deserts. Through 8 pm pdt, peak wind gust reports have largely been
well below 40 mph.

Wind advisories have been posted from early Monday morning through
Tuesday afternoon. See laxnpwsgx for details. No forecast changes.

From previous discussion...

a broad area of low pressure is currently off the pac NW coast, and
the trough will move e/se and dig into so-cal by Monday morning.

Moisture will be rather limited here and be mostly under 850 mb, so
any precip that occurs will be light, with best chances in san diego
county due to better westerly flow from over the water. We will
maintain the slight chances of precip for now for late tonight and
Monday morning. Local wind gusts over 50 mph will occur in the
mountains and deserts Monday due to the gradients aloft, and a wind
advisory has been issued for most of these areas starting at 4 pm
Monday. After the trough moves east late Monday night/Tuesday
morning, a surface high from the pacific will spread into nevada and
result in some moderate offshore flow. A wind advisory covers the
area from the santa ana mountains east and northeast through the
inland empire and san bernardino/riverside county mountains Monday
night through 2 pm Tuesday. Ridging from the west combined with the
marine layer becoming either very shallow or non-existent will
result in warmer days Tuesday/Wednesday.

By Thursday, the next trough will dig south over the interior
western us, but the inland track will mean that precip chances will
be quite low here, unless the trough ends up further west than what
the models show. The main effects here will be the cooler weather
and windy areas in the mountains and deserts. If the trough shifts
east without closing off over the weekend, we should have fair
warmer weather but with a possibility of offshore flow next weekend.

Aviation
270400z... Bkn-ovc stratus through at least 17z Monday, along the
coast, valleys and lower coastal mountain slopes, with bases 1500-
3000 ft msl, tops 4000-4500 ft msl and vis restrictions to 3 sm.

W to NW winds strengthening overnight through Monday morning,
becoming 15-25 kt with gusts to 40 kt over the mountain ridges,
desert slopes, passes/canyons and into wind-favored desert areas,
resulting in strong up/downdrafts and llws over and east of the
mountains. Winds shifting and becoming quite strong NW Monday
evening, resulting in strong up/downdrafts and llws over and west of
the mountains and immediately below the canyons and passes.

Marine
Strong northwest winds with gusts of 25 to 30 kt generally to
continue through Tuesday with combined seas around 10 ft. A small
craft advisory remains in effect.

Beaches
West-northwest swells around 290 degrees will create elevated surf
of 3-6 feet through most of the week. Sets of 7 feet will be
possible at times. These surf conditions will be accompanied by an
increased risk of strong rip currents.

Sgx watches/warnings/advisories
Ca... Wind advisory from 4 am to 10 pm pdt Monday for apple and
lucerne valleys-san diego county deserts-san diego county
mountains.

Wind advisory from 10 pm Monday to 2 pm pdt Tuesday for san
bernardino and riverside county valleys-the inland empire-
santa ana mountains and foothills.

Wind advisory from 4 am Monday to 2 pm pdt Tuesday for riverside
county mountains-san bernardino county mountains-san
gorgonio pass near banning.

Pz... Small craft advisory from 5 pm this afternoon to 8 pm pdt
Tuesday for waters from san mateo point to the mexican
border extending 30 to 60 nm out including san clemente
island.

Small craft advisory from 1 pm Monday to 8 pm pdt Tuesday for
coastal waters from san mateo point to the mexican border
and out to 30 nm.

Public... Jad/maxwell
aviation/marine/beaches... Jmb


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TIXC1 - Tijuana River Reserve, CA 66 mi57 min Calm 56°F 1017 hPa53°F
SDBC1 - 9410170 - San Diego, CA 76 mi42 min 66°F1017.2 hPa (-0.9)
IIWC1 - 9410172 - USS Midway South Navy Pier, San Diego, CA 76 mi66 min S 4.1 G 5.1 58°F

Wind History for USS MIDWAY South Navy Pier, San Diego, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Diego, Brown Field Municipal Airport, CA64 mi49 minN 010.00 miOvercast55°F53°F93%1016.3 hPa

Wind History from SDM (wind in knots)
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Last 24hrW4CalmCalmCalmCalmCalmW5W7NW5CalmW765W7W6W3W5W4CalmCalmCalmCalmCalmCalm
1 day agoSE3CalmCalmCalmNE3NE3NW4N3345NW8
G15
W7W9NW8W7W4W3CalmCalmCalmW3CalmCalm
2 days agoE4E3E5E3SE6SE3N3NW4N45W7W8W8W9
G15
NW53W4NW3NW3CalmCalmCalmNE4E3

Tide / Current Tables for Ensenada, Baja California Norte, Mexico
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Ensenada
Click for Map
Mon -- 03:04 AM PDT     0.09 meters Low Tide
Mon -- 06:34 AM PDT     Moonrise
Mon -- 06:40 AM PDT     Sunrise
Mon -- 09:10 AM PDT     1.63 meters High Tide
Mon -- 03:26 PM PDT     -0.10 meters Low Tide
Mon -- 06:53 PM PDT     Moonset
Mon -- 07:03 PM PDT     Sunset
Mon -- 07:59 PM PDT     New Moon
Mon -- 09:37 PM PDT     1.61 meters High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.80.50.20.10.20.40.81.21.51.61.61.30.90.50.1-0.1-0.10.20.50.91.31.61.61.4

Tide / Current Tables for Imperial Beach, California
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Imperial Beach
Click for Map
Mon -- 03:30 AM PDT     0.08 feet Low Tide
Mon -- 06:36 AM PDT     Moonrise
Mon -- 06:42 AM PDT     Sunrise
Mon -- 09:38 AM PDT     5.46 feet High Tide
Mon -- 03:51 PM PDT     -0.49 feet Low Tide
Mon -- 06:55 PM PDT     Moonset
Mon -- 07:05 PM PDT     Sunset
Mon -- 07:59 PM PDT     New Moon
Mon -- 10:05 PM PDT     5.36 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.320.80.20.20.823.34.55.35.44.83.62.10.7-0.2-0.5-01.12.53.94.95.45.1

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of Southwest    EDIT
Geos

Wind Forecast for San Diego, CA (6,6,7,8)
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Ground Weather Radar Station San Diego, CA
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weather_mapweather_map weather_map

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Disclaimer:
The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.