Wednesday, September26, 2018 L-36.com


Marine Weather and Tides
National City, CA

Version 3.4
What's New / NOTES
9/17/2018 XTide broke when 1and1 "upgraded" my server. It has been esculated. I am sorry for the problem.

Sunrise 6:38AMSunset 6:41PM Tuesday September 25, 2018 9:23 PM PDT (04:23 UTC) Moonrise 7:27PMMoonset 7:04AM Illumination 98% Phase: Waning Gibbous; Moon at 16 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- 154 Pm Pdt Tue Sep 25 2018
Tonight..Wind nw 10 kt. Gusts to 15 kt in the evening. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 7 seconds and sw 1 to 2 ft at 15 seconds.
Wed..Wind nw 10 kt. Gusts to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 6 seconds and sw 2 ft at 17 seconds.
Wed night..Wind W 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 5 seconds and sw 2 ft at 17 seconds.
Thu..Wind nw 10 kt. Gusts to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft at 5 seconds and sw 1 to 2 ft at 16 seconds.
Thu night..Wind W 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 5 seconds and S 2 ft at 16 seconds.
Fri..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 2 ft.
Fri night..Wind variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 1 to 3 ft.
Sat..Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 2 to 3 ft.
Sat 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. Mixed swell W 2 ft and S 2 to 4 ft.
Sun..Wind variable less than 10 kt...becoming nw 10 kt with gusts to 15 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 1 to 2 ft and S 3 to 4 ft.
Sun night..Wind nw 10 kt. Wind waves 2 ft or less. Mixed swell W 1 to 2 ft and S 3 to 4 ft.
PZZ700 154 Pm Pdt Tue Sep 25 2018
Synopsis for the far southern california coast.. At 2 pm, a 1032 mb high covered a broad area of the northeast pacific ocean and a 1028 mb high was over yellowstone park. A 1008 mb low was over needles, ca. Generally weak onshore flow will prevail through Saturday.


7 Day Forecast for Marine Location Near National City, CA
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location: 32.67, -117.12     debug


Area Discussion for - San Diego, CA
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Fxus66 ksgx 260407
afdsgx
area forecast discussion
national weather service san diego ca
906 pm pdt Tue sep 25 2018

Synopsis
High pressure building aloft will bring warmer days Wednesday
through Friday, followed by cooler weather over the weekend. The
marine layer will turn shallower Wednesday through Friday, then
deepen Saturday and Sunday as a trough of low pressure develops off
the california coast. There is some potential for this trough to
draw tropical moisture into the southwestern states early next week.

Discussion For extreme southwestern california including orange...

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

marine stratus was slowly expanding along the san diego county coast
this evening , elsewhere across the cwa... It was clear. An 8c
inversion was present, based near 2100 ft msl. The onshore gradient
across the CWA was weakening and had turned offshore about 2 mbs
from the high desert areas. Winds were mostly light and had turned
ne in the mts. No forecast changes this evening.

From previous discussion...

marine layer clouds retreated back to the coast this afternoon with
clearing all the way to the beaches. The clouds will return tonight,
then burn off to the coast again Wednesday. Warmer days are ahead as
high pressure builds over the southwest. 500 mb heights of 586 dm
today increase to 593 dm Wednesday and Thursday. The marine layer
will turn shallower and the low clouds will not spread nearly as far
inland Thursday and Friday mornings.

High temperatures were raised in most areas Wednesday through
Friday, with greatest increases made to the valley temperatures due
to the drier airmass and weak offshore downslope flow. Inland empire
highs will like reach triple digits in some areas Thursday. Highs
Thursday will range from the 80s in the coastal zones, in the 90s in
the san diego valleys, and 97-105 in the inland empire. Mountain
highs will be in the 80s, high desert highs in the mid 90s, and
lower desert highs from 106-111. Temperatures for Friday have also
been raised with the upper ridge slowing its eastward movement.

The ridge will break down Friday night and Saturday when a trough of
low pressure over the eastern pacific moves into northern
california. This will bring cooling and a deeper marine layer
through the upcoming weekend.

The weather gets quite interesting next week. Long range model
guidance is hinting at a potential influx of tropical moisture from
what is now tropical storm rosa off the west coast of mexico. The
trough position will be a key player into just how much moisture
reaches our area. The GFS and most of it's ensembles are much more
bullish than the ECMWF in bringing deeper moisture into the
southwest, particularity arizona. The ECMWF and far fewer ensembles
show this, and are much drier Monday. But the ECMWF holds onto the
deep trough over the pacific through the middle of next week for
possible rain midweek. The ECMWF usually performs better in the long
range than the gfs, but there is a wide range of possible solutions
with very low confidence in any one of them at this time.

Aviation
260300z... Coast valleys... Stratus are beginning to fill into areas
of coastal san diego county, where san and crq will become overcast
after 04z and slightly thereafter in coastal orange county. Low
clouds expected to move inland about 20-25 miles with bases 1000-
1500 ft msl and tops to 2000 ft msl. Coastal valleys starting to
clear out after 17z Wednesday morning and partial clearing at the
coast after 19z Wednesday afternoon.

Mountains deserts... Mostly clear with unrestricted vis through
Wednesday.

Marine
No hazardous marine weather is expected through Monday. Wave heights
could increase slightly going into Monday due to enhanced swell from
tropical storm rosa. 3-4 ft swells are possible, but could be
substantially higher depending on the track.

Fire weather
Weak offshore flow Wednesday and Thursday, possibly into Friday
morning, with locally gusty east winds in the mountains, foothills,
and eastern valleys. Winds are expected to gust to around 25 mph at
times. Lower humidity will expand into the mountains today, and into
the inland valleys on Wednesday. Low inland humidity will continue
through Friday, but with weaker winds. Onshore flow will strengthen
for this weekend with a recovery in humidity for the valleys into
the mountains.

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

Sgx watches warnings advisories
Ca... None.

Pz... None.

Public fire weather... 10 moede
aviation marine... Apr


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SDBC1 - 9410170 - San Diego, CA 4 mi41 min 1013.1 hPa
46235 7 mi23 min 65°F2 ft
TIXC1 - Tijuana River Reserve, CA 7 mi98 min WNW 2.9 65°F 1013 hPa61°F
LJPC1 - La Jolla, CA (073) 15 mi63 min NNW 5.1 2 ft
LJAC1 - 9410230 - La Jolla, CA 15 mi41 min NNW 4.1 G 6 67°F 71°F1013.4 hPa
46254 16 mi53 min 70°F2 ft
46232 - Point Loma South, CA (191) 19 mi53 min 69°F3 ft
46258 21 mi23 min 69°F3 ft
46225 - Torrey Pines Outer, CA (100) 23 mi53 min 69°F3 ft
46224 - Oceanside Offshore, CA (045) 40 mi53 min 69°F3 ft
46242 - Camp Pendleton Nearshore, CA (043) 42 mi55 min 68°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
San Diego, North Island, Naval Air Station, CA5 mi32 minNNW 610.00 miMostly Cloudy67°F60°F79%1013.4 hPa
San Diego, San Diego International-Lindbergh Field, CA5 mi33 minNW 610.00 miOvercast68°F60°F76%1014 hPa
Imperial Beach Naval Outlying Field - Ream Field, CA6 mi28 minNNW 410.00 miA Few Clouds66°F59°F78%1013.7 hPa
San Diego, Brown Field Municipal Airport, CA10 mi31 minN 010.00 miFair64°F59°F84%1013.3 hPa
San Diego, Montgomery Field, CA11 mi31 minN 710.00 miOvercast66°F59°F78%1013.5 hPa
Gillespie Field Airport, CA14 mi37 minVar 510.00 miClear64°F59°F83%1013.9 hPa
San Diego, Miramar MCAS/Mitscher Field Airport, CA15 mi89 minNW 510.00 miPartly Cloudy68°F57°F70%1012.5 hPa

Wind History from NZY (wind in knots)
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Last 24hr3W4W4W4NW6NW5NW3N3E3S3CalmN4S4W9NW9W13NW13NW11W11W7NW8NW7NW7NW6
1 day agoSW6--------------SW5W5W7SW7SW6SW7SW6S6SW7W7W7SW5SW5NW6NW5N4
2 days agoNW5------N4N4CalmCalmCalmCalmCalmW8W5W8W8W10W10W10W8W7W6W6W5W5

Tide / Current Tables for National City, San Diego Bay, California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for San Diego Bay Entrance, California Current
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Tide / Current data from XTide NOT FOR NAVIGATION
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Weather Map and Satellite Images
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wmap_P
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 (0,6,7,8)
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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.