Marine Weather and Tides
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.
|Sunrise 6:19AM||Sunset 4:44PM||Monday November 19, 2018 11:53 AM PST (19:53 UTC)||Moonrise 3:54PM||Moonset 3:33AM||Illumination 89%|
7 Day Forecast for Marine Location Near Boulevard, CAHourly EDIT Help
Area Discussion for - San Diego, CA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus66 ksgx 191637|
area forecast discussion
national weather service san diego ca
836 am pst Mon nov 19 2018
It will be another mild and dry today with variable high clouds and
gusty east winds along the coastal foothills, elevating wildfire
potential. Low pressure off the coast today, will drift across the
region on Tuesday, helping to deepen the marine layer, along with
more low clouds and some cooling. Another weakening trough will
follow Wednesday night into Thursday. This system could generate
some light rain and showers along and west of the mountains sometime
Wednesday night into Thursday. Another system could generate some
light shower activity, mainly for san diego county on Saturday,
followed by a return of dry offshore flow and warming early next
Discussion For extreme southwestern california including orange...
san diego... Western riverside and southwestern san bernardino
Elevated fire weather conditions continue inland today...
high clouds were spreading across socal from the west this morning
and aided in a colorful sunrise. Satellite imagery showed thicker
clouds moving into the ca bight which may challenge the weak
november Sun later today. The sfc pressure gradient has reached
nearly 10 mbs offshore (sw nv to ksan) this morning and is
supporting some gusty easterly winds below the passes and along
wind prone coastal slope and foothill areas. Numerous sites had
gusts over 25 mph, with peak gusts 35-40 mph. Far inland, it is
still very dry. See fire weather discussion below for details.
The 12z miramar sounding had a sfc-based inversion and indicated
warming of 1-2 degrees c below 5k ft.
The high clouds are spinning off an approaching low pressure area
several hundred miles offshore. Depending on the thickness of the
high clouds, it could be a bit warmer than currently forecast, but
differences do not justify a forecast update at this time.
Otherwise, the forecast looks on track.
From previous discussion...
Short term (today through Wednesday)
Satellite imagery also shows a low pressure system over the
eastern pacific centered near 30n 130w, roughly due west of
northern baja. This low pressure system will weaken and move
slowly eastward, moving inland across southern california and
northern baja on Tuesday. The high cloud shield with this system
will overspread southern california today. Frontal band
precipitation with this system is mostly expected to dissipate by
the time it reaches the coast.
A second, larger low pressure system over the eastern pacific will
continue to move toward the west coast. Precipitation from this
system is expected to reach the coast of northern and portions of
central california late Tuesday night and early Wednesday, then
move southward through the state for Wednesday and Wednesday
night. In the area of weak lower level warm advection ahead of the
cold front, some light precipitation could develop late Wednesday
into Wednesday evening in areas bordering los angeles county to
The cold frontal precipitation band is expected to reach point
conception late Wednesday afternoon, pushing eastward across
southern california Wednesday night and early Thursday. This front
is expected to be weakening as it moves eastward across southern
california with progressively lesser amounts as one moves east and
south of los angeles county.
While some lighter precipitation is possible late Wednesday
afternoon into Wednesday evening, the bulk of the precipitation
for areas east and south of los angeles county is expected from|
late Wednesday evening through Wednesday night and early
Thursday. Across orange and southwestern san bernardino counties,
rainfall is expected to range from around one quarter inch near
the coast to one half to three quarters of an inch in the
mountains with locally greater amounts. Amounts are then expected
to decrease from north to south across san diego county with
around one tenth inch across southern san diego county. Rainfall
around one tenth to locally one quarter inch is expected across
high desert areas with mostly one tenth inch or less in lower
Long term (Thursday through Sunday)
Some showers may linger along and west of the mountains into
Thursday afternoon, mainly for the mountains and inland valleys.
Dry weather is expected for Thursday night and Friday under weak
high pressure. Another low pressure system will move inland
farther to the north, moving across the pacific northwest on
Friday and through the great basin on Saturday. As it does so, it
will strengthen the onshore flow across southern california. The
combination of that stronger onshore flow and weak instability
across the coastal waters from colder air aloft moving across the
warmer sea surface temperatures of the coastal waters, could bring
some scattered mostly light showers from the coastal waters
inland to mountains, mainly in san diego county as shown by the
ecmwf. Dry weather is then expected to prevail through Sunday with
gusty offshore winds possible Sunday.
191600z... Coast valleys... Low stratus will return to coastal taf
sites after 07z, with bases 1,000-1,200 ft and tops to 1,500 ft.
Clouds may extend up to 10-15 mi inland locally, and result in vis 2-
4 sm in br with patches of fg in higher terrain obscured by clouds.
Clearing should occur by 17z tue, although sct-bkn high clouds above
20,000 ft will persist through the period.
Mountains deserts... Sct-bkn high clouds above 20,000 ft will persist
through the period. Expect unrestricted vis.
No hazardous marine weather is expected through Thursday. Wind gusts
near 20 kt are possible Friday, mainly across the outer coastal
Easterly winds are blowing this morning along the coastal slopes and
foothill areas. In the offshore wind-prone spots, speeds are 15 to
25 mph with gusts 30 to 35 mph. Peak gusts are around 40 mph.
Widespread rh values inland just after sunrise were running from 15-
20%. The most sites with near critical fire weather criteria were in
san diego county and below the san gorgonio pass. A few will be
critical this morning. The winds should peak in the next few hours,
then decrease through the afternoon, but fire weather conditions
will remain elevated through the day.
Tonight through Tuesday... Winds will remain from the east, but
weaker tonight, and slightly better rh recovery is expected. For
Tuesday, onshore flow will gradually build inland, along with rh
levels. A wetting rain could arrive late Wednesday night or Thursday
but rainfall amounts will be light.
Skywarn activation is not requested. However weather spotters are
encouraged to report significant weather conditions.
Sgx watches warnings advisories
Public fire weather... 10 17
aviation marine... Rodriguez
Weather Reporting StationsEDIT (on/off)  Help NOTE: Click on distance to see the station location on a map
|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|TIXC1 - Tijuana River Reserve, CA||44 mi||69 min||WSW 5.1||67°F||1019 hPa||54°F|
|SDBC1 - 9410170 - San Diego, CA||46 mi||42 min||1017.2 hPa|
|46235||46 mi||54 min||65°F||2 ft|
Wind History for USS MIDWAY South Navy Pier, San Diego, CA(wind in knots) EDIT (on/off)  Help
Airport ReportsEDIT (on/off)  Help Click EDIT to display multiple airports
|Campo, CA||9 mi||62 min||ENE 19 G 26||mi||Breezy||66°F||19°F||16%||1015.8 hPa|
Wind History from NJK (wind in knots)
|1 day ago||Calm||Calm||SE||E||E||NE||N||NE||NE||N||W||W||W||W||NE||NE||W||W||S||Calm||Calm||Calm||Calm|
|2 days ago||NE||NE||NE||NE||NE||E||SE||Calm||W||W||W||W||SW||SW||W||S||SW||SW||Calm||SE||Calm||Calm||Calm|
EDIT RT Ports Option Weekend mode (on/off) (on/off)  Help One Week of Data
EDIT (on/off)  Help One Week of Data
Weather Map and Satellite Images(on/off)  HelpWeather Map
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.
Link to Loop
Other links: Northern Pacific Contential US Full GOES-East
Wind Forecast for San Diego, CA (14,3,4,5)(on/off)  Help
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