Friday, December15, 2017 L-36.com


Marine Weather and Tides
Palm Desert, 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 6:42AMSunset 4:40PM Friday December 15, 2017 3:49 PM PST (23:49 UTC) Moonrise 5:16AMMoonset 4:16PM Illumination 6% 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- 110 Pm Pst Fri Dec 15 2017
Tonight..Wind variable less than 10 kt...becoming sw 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 S to 10 kt. Wind waves 2 ft or less. SWell W 2 to 4 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 after midnight. Wind waves 2 ft or less. SWell W 5 to 7 ft at 12 seconds.
Sun..Wind ne 10 to 15 kt...becoming nw in the afternoon. Gusts to 20 kt. Wind waves 3 ft in the morning...becoming 2 ft or less. SWell W 3 to 6 ft at 13 seconds.
Sun night..Wind E 10 to 15 kt with gusts to 20 kt. Wind waves 2 ft or less. SWell W 2 to 3 ft at 12 seconds.
Mon..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 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 to 2 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.
Wed..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. SWell W 1 ft.
Wed night..Wind variable less than 10 kt. Wind waves 2 ft or less. SWell W 1 to 4 ft.
PZZ700 110 Pm Pst Fri Dec 15 2017
Synopsis for the far southern california coast.. At 12 pm, a 1028 mb high was near over west central nevada and a 1017 mb low was over ensenada mexico. Onshore flow will continue into early Saturday as a trough of low pressure moves through. This trough may bring a few showers. Offshore winds will return Sunday and continue through Tuesday with winds briefly turning to the northwest during the afternoons. Winds may turn back onshore on Wednesday.

7 Day Forecast for Marine Location Near Palm Desert, CA
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location: 33.74, -116.36     debug


Area Discussion for - San Diego, CA
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Fxus66 ksgx 152125
afdsgx
area forecast discussion
national weather service san diego ca
125 pm 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. 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...

at 1 pm pst, water vapor satellite imagery displayed an upper-
level ridge off the west coast nudging into southern california,
and an upper-level trough off the pacific northwest. The highest
wind gust this morning was 69 mph at sill hill. Check out our
highest wind gust summary headlined on our webpage. Winds will
continue to diminish through the afternoon as offshore pressure
gradients weaken. Highs 5-15 degrees above normal will continue
today with ridging aloft.

The aforementioned trough will quickly swing across southern
california Saturday, which will help lower high temperatures to near
seasonal normals, return onshore, westerly flow across most of the
area and somewhat increase humidity. Instability and moisture
may be sufficient enough to generate a shower or two over the
coastal waters. Once the trough moves to our south, northerly flow
will set up across the region. This, along with building high
pressure over the great basin, will create yet another round of
gusty santa ana winds across portions of san bernardino, riverside
and orange counties Saturday night through Sunday. Due to the
direction of the winds, san diego county should avoid the higher
gusts. North to northeast winds of 20-30 mph, with gusts to 55
mph are possible along coastal mountain slopes, canyons and
through the cajon pass. Isolated gusts could reach near 70 mph in
the usual windiest locations. Mountain waves are possible, and
could help gusty winds surface over portions of the inland empire
and coastal orange county. Winds will diminish overnight Sunday
night, but remain weak and offshore through Tuesday. A cold
airmass will help low temperatures dip into the 20s for a good
portion of the high desert Sunday and Monday mornings.

The upper-level ridge will remain strong and anchored to our west
through next week, which will allow for another trough to swing
across the great basin. This will help switch our flow back to
onshore and westerly on Wednesday, but then could generate another
round of santa ana winds late Thursday through Friday once it
exits the region. Highs will remain above seasonal normals next
week, but not be as high as they have been this week.

Unfortunately, no sign of precipitation is on our horizon for the
next week.

Aviation
152000z... Mostly skc with p6sm vis through 16 0900 utc. 16 0900-
1800 utc, patchy stratus with bases 1000-2000 ft msl and tops to
2500 ft msl developing at the coast and possibly spreading into the
valleys.

Marine
No hazardous marine weather is expected through Wednesday.

Fire weather
Westerly winds will develop across most areas Saturday, along with
higher relative humidity, as an upper-level trough moves across
the region.

Gusty northeasterly winds will redevelop late Saturday night
through Sunday evening across portions of san bernardino,
riverside and orange counties, with low relative humidity pushing
in Sunday morning. Gusts around 55 mph are expected in the usual
windy locations with possible isolated gusts near 70 mph. A red
flag warning has been issued for 8 am through 8 pm Sunday for
those locations. San diego county may not see as strong of winds
or very low humidity with this event, however there is still time
for them to increase over the next day or so for Sunday.

Therefore, san diego valleys and mountains remain in a fire
weather watch from 8 am to 8 pm Sunday.

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

Sgx watches warnings advisories
Ca... Fire weather watch from Sunday morning through Sunday evening
for san diego county inland valleys-san diego county
mountains-including the palomar and descanso ranger
districts of the cleveland national forest.

Red flag warning from 8 am to 8 pm pst Sunday for orange county
coastal areas-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 gorgonio pass near banning-santa ana mountains-
including the trabuco ranger district of the cleveland
national forest.

Pz... None.

Public fire weather... Jjt
aviation marine... Harrison


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46242 - Camp Pendleton Nearshore, CA (043) 68 mi81 min 63°F3 ft
46224 - Oceanside Offshore, CA (045) 71 mi49 min 64°F3 ft

Wind History for La Jolla, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Palm Springs Regional Airport, CA10 mi56 minE 510.00 miFair77°F17°F10%1017.5 hPa
Palm Springs, Jacqueline Cochran Regional Airport, CA12 mi57 minSE 710.00 miFair77°F19°F12%1016.5 hPa

Wind History from PSP (wind in knots)
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Last 24hrN13
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3NE7NW6NE6N7N9NW6NW11NW6NW5W6W8NW45W3N3CalmCalmCalmE446E5
1 day ago5CalmCalmW43NW4N7CalmCalmSW3N5543NE3--E105S8E6N13N17
G25
N16N15
2 days agoSE6CalmN3W3NW4N4NW9NW5NW5NW5NW7NW6NW6NW9NW8N10NW6E4433Calm5E6

Tide / Current Tables for San Clemente, California
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San Clemente
Click for Map
Fri -- 12:44 AM PST     1.40 feet Low Tide
Fri -- 04:20 AM PST     Moonrise
Fri -- 06:47 AM PST     Sunrise
Fri -- 07:01 AM PST     5.84 feet High Tide
Fri -- 02:02 PM PST     -0.33 feet Low Tide
Fri -- 03:21 PM PST     Moonset
Fri -- 04:44 PM PST     Sunset
Fri -- 08:10 PM PST     3.82 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.51.41.82.63.74.75.55.85.54.73.52.10.8-0-0.3-0.10.71.72.73.53.83.73.22.5

Tide / Current Tables for La Jolla (Scripps Institution Wharf), California
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La Jolla (Scripps Institution Wharf)
Click for Map
Fri -- 12:38 AM PST     1.66 feet Low Tide
Fri -- 04:18 AM PST     Moonrise
Fri -- 06:44 AM PST     Sunrise
Fri -- 06:57 AM PST     5.77 feet High Tide
Fri -- 01:59 PM PST     -0.25 feet Low Tide
Fri -- 03:21 PM PST     Moonset
Fri -- 04:44 PM PST     Sunset
Fri -- 08:16 PM PST     3.76 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.71.72.12.83.84.85.55.85.54.63.42.10.90-0.200.81.72.73.43.73.73.22.6

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 (18,4,5,8)
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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.