Tuesday, March20, 2018 L-36.com

Marine Weather and Tides
Boulevard, CA

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.

Sunrise 6:47AMSunset 6:59PM Tuesday March 20, 2018 6:21 PM PDT (01:21 UTC) Moonrise 9:00AMMoonset 10:21PM Illumination 18% Phase: Waxing Crescent; Moon at 4 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- 234 Pm Pdt Tue Mar 20 2018
Tonight..Wind nw to 10 kt in the evening...becoming variable less than 10 kt. Wind waves 2 ft or less. SWell nw 2 ft at 12 seconds.
Wed..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft at 12 seconds. Slight chance of rain in the morning.
Wed night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 3 to 4 ft at 9 seconds. Chance of rain.
Thu..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell sw 3 to 5 ft at 11 seconds. Chance of rain in the morning, then rain in the afternoon.
Thu night..Wind W 10 kt. Gusts to 15 kt after midnight. Wind waves 2 ft or less...becoming 3 ft after midnight. SWell W 4 to 5 ft at 11 seconds. Rain likely in the evening, then chance of rain after midnight.
Fri..Wind nw 10 to 15 kt. Wind waves 2 ft or less...becoming 3 ft in the afternoon. SWell W 4 to 5 ft. Slight chance of rain in the morning.
Fri night..Wind W 10 to 15 kt with gusts to 20 kt. Wind waves 4 ft. SWell W 5 to 6 ft.
Sat..Wind W 10 to 15 kt with gusts to 20 kt. Wind waves 4 ft. SWell W 4 to 6 ft.
Sat night..Wind W 10 to 20 kt with gusts to 25 kt. Wind waves 4 ft. SWell W 4 to 6 ft. Slight chance of showers after midnight.
Sun..Wind sw 10 kt. Gusts to 15 kt in the afternoon. Wind waves 2 ft or less...becoming 3 ft in the afternoon. SWell W 5 to 6 ft. Slight chance of showers in the morning.
Sun night..Wind sw 10 to 15 kt. Wind waves 3 ft in the evening...becoming 2 ft or less. SWell W 4 to 5 ft.
PZZ700 234 Pm Pdt Tue Mar 20 2018
Synopsis for the far southern california coast.. An approaching subtropical storm system will bring stronger onshore flow through Wednesday, then periods of rain and gusty winds for Thursday through Thursday night. Higher winds and swell may bring hazardous conditions Friday through Saturday.

7 Day Forecast for Marine Location Near Boulevard, CA
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location: 32.67, -116.31     debug

Area Discussion for - San Diego, CA
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Fxus66 ksgx 202115
area forecast discussion
national weather service san diego ca
215 pm pdt Tue mar 20 2018

Mostly dry with passing high clouds and near average temperatures
through Wednesday. Rain should begin to increase in coverage
Wednesday night north of san diego county, with heavier rainfall
expected Thursday. Debris flows near recent burn scars and flash
flooding remain a risk, especially north of san diego county.

Cool and drier weather over the weekend.

Discussion For extreme southwestern california including orange...

san diego... Western riverside and southwestern san bernardino

at 100 pm... A closed low was around 1000 miles west of point
conception. South and east of the low, an elongated plume of sub-
tropical moisture (atmospheric river) extended from just west of
hawaii to the california coast. An area of moderate to heavy
rainfall had begun along the central california coast. Locally the
weather was quiet and dry, with light winds and high clouds
decreasing from north to south.

For today through Wednesday, the closed low off the west coast
will slowly drift eastward, becoming an open wave as it is
incorporated into a larger trough diving south from the gulf of
alaska. As this occurs very little change is anticipated in the
trajectory of atmospheric river (ar). This should keep the bulk
of the rain north and west of l.A. Through at least Wednesday
evening. Any rain that does occur should be light and limited to
areas north of san diego county. For most our region, this period
will be defined by passing high clouds, light winds, near average
temperatures and the potential for nice sunsets sunrises.

Eastward progress of the trough will increase Wednesday night,
allowing the trough axis to reach and sweep through socal by
early Friday. This will finally push the ar south and east
increasing the potential for moderate to heavy rainfall from
orange county southward. Winds ahead of the trough in the surface
to 700 mb layer will turn more southwesterly, and with ample
moisture in place, should focus rainfall amounts along the coastal
slopes Wednesday night. Rain should become more widespread heavy
Thursday as the core of the ar moves through the region. This
should be the period of time with highest rain rates, possibly
reaching 0.50 inches or higher for periods of time. Urban and
small stream flooding remain possible, with flash flooding and
debris flows possible mainly north of san diego county. Snow
levels remain 9,000 ft or above, resulting in rain even at resort
level. Some timing differences exist for the final passage of the
trough axis, though it looks like any rainfall should end from
north to south by late Friday morning. Details on rainfall
amounts rates can be found in the hydrology section below.

Troughing is expected to linger over the west coast this weekend,
resulting in below average temperatures and perhaps a few light
sprinkles drizzle west of the mountains Sunday night.

202100z... Sct clouds above 6000 feet msl will
thicken through Wednesday morning with bases lowering to 3000-6000
feet msl through 18z Wednesday. -ra and some mountain
obscurations in southwestern san bernardino county and northern
orange county after 12z Wednesday. More widespread rain will
develop after 00z Thursday, along with strong winds over the
mountains and deserts.

A storm system will bring periods of rain Thursday morning through
Thursday evening, while higher winds and swell are likely Friday and
Saturday, possibly reaching small craft advisory criteria.

A low pressure system and associated a strong atmospheric river
will impact california through Thursday night. The greatest
rainfall and impacts are anticipated from orange county southward
on Thursday, though a few sprinkles showers may occur north of
san diego county as early as tonight. The following provides
details on expected storm total rainfall and rainfall rates.

Forecast rainfall totals have decreased slightly from this time
yesterday. In general rain totals should decrease from north to

Forecast rain totals:
orange county: 1-3 inches
inland empire: 1-3 inches
coastal slopes: 3-5 inches with local amounts to 6 inches
san diego county (coast & valleys): 0.25-1.5 inches
upper deserts: 0.50-1.5 inches
coachella valley: 0.10-0.50 inches
san diego county desert: 0.10-0.25 inches
hourly rainfall rates:
rates near 0.50 inches per hour probable, with the potential for
rates as high as 0.75 per hour for brief periods.

Skywarn activation will not be needed through Wednesday.

Sgx watches warnings advisories
Ca... Flash flood watch from Wednesday evening through late Thursday
night for orange county coastal areas-orange county inland
areas-san bernardino county mountains-san bernardino and
riverside county valleys-the inland empire-santa ana
mountains and foothills.

Pz... None.

Public... Albright
aviation marine... Brotherton

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TIXC1 - Tijuana River Reserve, CA 44 mi97 min NW 7 63°F 1015 hPa56°F
SDBC1 - 9410170 - San Diego, CA 46 mi52 min 65°F1014.4 hPa

Wind History for USS MIDWAY South Navy Pier, San Diego, CA
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1 day
2 days

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Campo, CA9 mi30 minSW 10 mi66°F37°F34%1011.3 hPa

Wind History from CZZ (wind in knots)
Last 24hrNE7CalmNE4N4CalmNE6NE5NE3NE4NE3NE5NE3NE5CalmCalmE7S53SW7SW9SW10SW9SW10SW10
1 day agoW6W4CalmN54CalmCalm3CalmCalmCalmN3NE4NE5E10NE18
2 days agoW13

Tide / Current Tables for National City, San Diego Bay, California
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National City
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Tue -- 06:03 AM PDT     0.20 feet Low Tide
Tue -- 06:52 AM PDT     Sunrise
Tue -- 09:03 AM PDT     Moonrise
Tue -- 12:02 PM PDT     4.76 feet High Tide
Tue -- 05:57 PM PDT     0.82 feet Low Tide
Tue -- 07:00 PM PDT     Sunset
Tue -- 10:24 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Tide / Current Tables for Imperial Beach, California
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Imperial Beach
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Tue -- 05:50 AM PDT     0.19 feet Low Tide
Tue -- 06:52 AM PDT     Sunrise
Tue -- 09:03 AM PDT     Moonrise
Tue -- 11:58 AM PDT     4.24 feet High Tide
Tue -- 05:44 PM PDT     0.78 feet Low Tide
Tue -- 07:00 PM PDT     Sunset
Tue -- 10:24 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Weather Map and Satellite Images
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GOES 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.
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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for San Diego, CA (21,6,7,8)
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Ground Weather Radar Station San Diego, CA
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weather_mapweather_map weather_map

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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.