Friday, December15, 2017 L-36.com


Marine Weather and Tides
San Diego, CA

Version 3.4
What's New / NOTES
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.
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.

Sunrise 6:43AMSunset 4:46PM Friday December 15, 2017 6:03 AM PST (14:03 UTC) Moonrise 5:19AMMoonset 4:21PM Illumination 8% Phase: Waning Crescent; Moon at 27 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- 213 Am Pst Fri Dec 15 2017
Today..Wind ne to 10 kt with gusts to 15 kt... Becoming nw in the afternoon. Wind waves 2 ft or less. SWell W 2 to 4 ft at 17 seconds.
Tonight..Wind nw 10 kt...becoming W to 10 kt with gusts to 15 kt after midnight. Wind waves 2 ft or less. SWell W 2 to 4 ft at 16 seconds.
Sat..Wind sw 10 kt with gusts to 15 kt in the morning... Becoming variable less than 10 kt. Wind waves 2 ft or less. SWell W 2 to 5 ft at 15 seconds. Slight chance of showers in the afternoon.
Sat night..Wind variable less than 10 kt...becoming E 10 to 15 kt with gusts to 20 kt after midnight. Wind waves 2 ft or less. SWell W 4 to 6 ft at 14 seconds.
Sun..Wind ne 10 to 20 kt...becoming nw 10 to 15 kt in the afternoon. Gusts to 25 kt. Wind waves 4 ft. SWell W 3 to 5 ft at 13 seconds.
Sun night..Wind E 10 to 20 kt with gusts to 25 kt. Wind waves 3 to 4 ft in the evening...becoming 2 ft or less. SWell W 2 to 3 ft.
Mon..Wind ne 10 kt...becoming W in the afternoon. Gusts to 15 kt. Wind waves 2 ft or less. SWell W 2 ft.
Mon night..Wind N 10 kt with gusts to 15 kt. Wind waves 3 ft in the evening...becoming 2 ft or less. SWell W 1 to 2 ft.
Tue..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 1 ft.
Tue night..Wind nw 10 kt in the evening... Becoming variable less than 10 kt. Wind waves 2 ft or less. SWell W 1 ft.
PZZ700 213 Am Pst Fri Dec 15 2017
Synopsis for the far southern california coast.. At 2 am, a 1035 mb high was near over west central utah and a 1017 mb low was 90 nm south of san diego. Weak offshore flow will become onshore this afternoon, then strengthen early Saturday as a trough moves through. Offshore winds will return Sunday and continue through Tuesday with winds briefly turning to the northwest during the afternoons.

7 Day Forecast for Marine Location Near San Diego, CA
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location: 32.78, -117.23     debug


Area Discussion for - San Diego, CA
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Fxus66 ksgx 151041
afdsgx
area forecast discussion
national weather service san diego ca
241 am pst Fri dec 15 2017

Synopsis
The strong high pressure ridge over the eastern pacific will
remain in place through next week. A disturbance will drop south
along the eastern side of the ridge on Saturday, briefly drawing
moist, marine air back over the region and setting up a cooler
weekend. As it passes to the southeast, the dry offshore winds will
return on Sunday into Monday. Not quite as warm next week, but
continued fair and dry with above average temperatures.

Discussion For extreme southwestern california including orange...

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

skies were clear over the CWA early this morning. At 2 am pst... The
offshore sfc pressure gradient was 8 mbs SW nv to ksan, and only
about 1 mb from the lower deserts. The offshore gradient was
supporting areas of winds 25 to 35 mph with peak gusts 45 to 50 mph,
mainly in the back country of san diego county. Relative humidity
had moderated over coastal areas somewhat, but remained very low
inland, continuing a high wildfire threat. Please see fire weather
discussion below for complete details.

The offshore winds will remain strong and gusty, particularly in the
wind-prone areas of san diego county early this morning, but will be
decreasing through the day and turning onshore. It will be another
warm day with MAX temps in the lower 80s inland.

Water vapor imagery shows a potent shortwave over the north pacific
destined to arrive here Saturday morning. The various models runs
continue to advertise a variety of solutions regarding this feature
as it amplifies south around the eastern flank of the blocking
eastpac ridge. Numerous runs had the wave cutting off a compact low
over the ca bight on Sat morning as an eddy spins-up over the
coastal waters. Many runs develop precip in far SW san diego county
just as it passes. Given the massive height-falls, the entrainment
of moisture, and vorticity present, it would seem some convective
development is not out of the question, no matter how fast it is
moving, or the amount of precip potential. However, latest 06z nam
and 06 GFS runs do not cut-off the low until the wave reaches az
early Sunday, so for now, we continue with slight chance pops over
the coastal waters on Saturday.

Despite the latest GFS solution cutting off a low over az, the upper-
level wind trajectory and subsequent support for offshore winds over
socal are quite different between the latest ECMWF and gfs
solutions. These differing results lower confidence regarding
specific areas to feel any stronger winds on sun. The favored gfs
models suggests stronger winds would be over northern areas of the
cwa.

Once that wave passes, the massive eastpac ridge flattens and
broadens early next week, then amplifies again later in the week
into the high latitudes as another shortwave dives south along the
eastern flank into the great basin. This would be yet another
"inside slider" with little prospect for any meaningful precip here.

It would also, once again, reinforce the offshore flow and dry
conditions during the latter half of next week.

Aviation
151020z... Ne winds with local surface gusts 35-45 kt will create mod-
stg uddfs llws over and SW W of the mountains through about 16z,
then weaken through the afternoon. Otherwise mostly clear with
unrestricted vis through Friday night. Patchy stratus with bases
1000 ft msl or higher developing near the coast after 12z Saturday.

Marine
No hazardous marine weather is expected through Tuesday.

Fire weather
The red flag warning currently in effect will continue through
10 am pst for inland areas...

northeast winds 15 to 25 mph, with peak gusts 40 to 50 mph will
continue along the coastal slopes and foothills through about 10 am
pst, then diminish through the afternoon. The strongest winds are
expected in san diego county this morning. The winds, coupled with
rh values below 15% will continue red flag conditions in these areas
this morning.

A sea breeze of 8-15 mph will develop into the valleys later this
afternoon, but except for the coastal strip, rh will remain below
15%. Stronger onshore flow and higher rh will bring a respite to the
elevated wildfire conditions west of the mts on Saturday. Westerly
winds of 15 to 30 mph with gusts to 45 mph will develop over the
ridges and onto the desert slopes.

Forecast confidence decreases Sat night sun, but a fire weather
watch has been issued for the possibility of another strong offshore
event with rh values of 15% or below then. The latest forecast
information suggests the stronger winds and larger fire weather
threat would be in areas north of san diego county.

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 10 am pst Friday for orange county inland
areas-riverside county mountains-including the san jacinto
ranger district of the san bernardino national forest-san
bernardino county mountains-including the mountain top and
front country ranger districts 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-santa ana mountains-including
the trabuco ranger district of the cleveland national
forest.

Fire weather watch from late Saturday night through Sunday
evening for orange county inland areas-riverside county
mountains-including the san jacinto ranger district of the
san bernardino national forest-san bernardino county
mountains-including the mountain top and front country
ranger districts 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-
santa ana mountains-including the trabuco ranger district
of the cleveland national forest.

Pz... None.

Public fire weather... Jad
aviation marine... Ss


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SDBC1 - 9410170 - San Diego, CA 5 mi46 min 64°F1019.5 hPa
LJPC1 - La Jolla, CA (073) 6 mi44 min ESE 2.9 3 ft
LJAC1 - 9410230 - La Jolla, CA 6 mi52 min ENE 5.1 G 6 66°F 66°F1018.1 hPa
46254 6 mi46 min 62°F3 ft
46225 - Torrey Pines Outer, CA (100) 14 mi43 min 62°F4 ft
46258 14 mi34 min 62°F4 ft
TIXC1 - Tijuana River Reserve, CA 15 mi79 min NE 1.9 51°F 1020 hPa22°F
46232 - Point Loma South, CA (191) 20 mi53 min 64°F5 ft
46224 - Oceanside Offshore, CA (045) 30 mi34 min 63°F2 ft
46242 - Camp Pendleton Nearshore, CA (043) 32 mi96 min 62°F2 ft
46086 - San Clemente Basin 47 mi74 min N 3.9 G 5.8 64°F 64°F5 ft1018.5 hPa (-0.4)

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, San Diego International-Lindbergh Field, CA5 mi73 minN 010.00 miFair51°F36°F56%1019.1 hPa
San Diego, Montgomery Field, CA6 mi71 minNE 310.00 miFair65°F10°F11%1018.4 hPa
San Diego, North Island, Naval Air Station, CA6 mi72 minN 710.00 miFair50°F43°F77%1018.3 hPa
San Diego, Miramar MCAS/Mitscher Field Airport, CA8 mi69 minNE 910.00 miFair69°F7°F9%1018.1 hPa
Gillespie Field Airport, CA14 mi69 minN 010.00 miFair43°F26°F53%1019 hPa
Imperial Beach Naval Outlying Field - Ream Field, CA15 mi68 minNE 46.00 miFair49°F23°F36%1018.7 hPa
San Diego, Brown Field Municipal Airport, CA19 mi71 minENE 410.00 miFair54°F17°F23%1018.5 hPa

Wind History from NZY (wind in knots)
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Last 24hrCalmNE3CalmCalmCalmCalmS4NW7N9NW7NW8NW9NW7CalmNE4CalmCalmNW4NE3N4SE5N3SE3N7
1 day agoNE3CalmCalmCalmCalmS3S3S6S4NW6NW3CalmCalmCalmSE5S6SE3CalmCalmCalmSE3N3W3Calm
2 days agoNE3CalmNW4NW3CalmN5NW5NW7NW9NW11N10N9NW3N4N3SW3CalmCalmCalmCalmN3CalmCalmN4

Tide / Current Tables for Crown Point, Mission Bay, California
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Crown Point
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Fri -- 01:11 AM PST     1.46 feet Low Tide
Fri -- 04:18 AM PST     Moonrise
Fri -- 06:44 AM PST     Sunrise
Fri -- 07:13 AM PST     6.09 feet High Tide
Fri -- 02:29 PM PST     -0.34 feet Low Tide
Fri -- 03:21 PM PST     Moonset
Fri -- 04:44 PM PST     Sunset
Fri -- 08:22 PM PST     3.99 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.71.51.62.33.44.65.66.15.95.242.61.30.3-0.3-0.30.41.42.63.543.93.52.8

Tide / Current Tables for San Diego Bay Entrance, California Current
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San Diego Bay Entrance
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Fri -- 01:24 AM PST     0.00 knots Slack
Fri -- 04:17 AM PST     Moonrise
Fri -- 04:47 AM PST     1.58 knots Max Flood
Fri -- 06:43 AM PST     Sunrise
Fri -- 07:37 AM PST     -0.00 knots Slack
Fri -- 11:00 AM PST     -2.18 knots Max Ebb
Fri -- 02:46 PM PST     0.00 knots Slack
Fri -- 03:21 PM PST     Moonset
Fri -- 04:44 PM PST     Sunset
Fri -- 05:41 PM PST     1.46 knots Max Flood
Fri -- 08:37 PM PST     -0.00 knots Slack
Fri -- 11:10 PM PST     -1.16 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.8-0.30.411.51.61.30.6-0.4-1.3-1.9-2.2-2-1.4-0.60.20.91.41.41.10.5-0.3-0.9-1.2

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 (9,2,3,4)
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Ground Weather Radar Station San Diego, CA
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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.