Marine Weather and Tides
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen
|Sunrise 6:49AM||Sunset 6:13PM||Thursday October 17, 2019 10:55 AM PDT (17:55 UTC)||Moonrise 8:59PM||Moonset 10:17AM||Illumination 83%|
7 Day Forecast for Marine Location Near Potrero, CAHourly EDIT Help
Area Discussion for - San Diego, CA  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxus66 ksgx 171622|
area forecast discussion
national weather service san diego ca
922 am pdt Thu oct 17 2019
Onshore flow will strengthen today, with a coastal eddy and areas
of low clouds and fog extending up to 20 miles inland this
morning. High temperatures will be 10 to 15 degrees lower than
yesterday for most areas. Gusty southwest to west winds will
develop in the mountains and deserts for the afternoon and
evening. Low clouds will spread into portions of the inland
valleys again tonight into Friday morning with somewhat less
coverage. For Friday night into Saturday morning, the low clouds
and fog will be mostly restricted to the coastal areas. There will
a period of weak to locally moderate offshore flow developing
Sunday and continuing into early Tuesday, with the strongest winds
on Monday morning near the coastal slopes of the mountains and
below passes and canyons. The offshore flow will be accompanied by
very low relative humidity inland. There will be a warming trend
for Sunday through Tuesday with cooling spreading inland on
Wednesday as weak onshore flow returns.
Discussion For extreme southwestern california including orange...
san diego... Western riverside and southwestern san bernardino
this morning, a trough of low pressure has brought significant
cooling and a return of marine layer low clouds and fog to the
coastal areas and western portions of the inland valleys, along
with a coastal eddy. The marine layer is currently around 1700 ft
deep and low clouds fog are in the process of dissipating after
having spread about 20 miles inland overnight.
High temperatures today will be 10 to 15 degrees lower in most
areas than yesterday. There will also be gusty southwest to west
winds in the mountains and deserts during the afternoon and
evening with strongest gusts to 45 mph. Some mid and high clouds
will continue to spread across the area today, then move east this
afternoon and tonight.
As the trough moves inland and a reinforcing shortwave passes over
socal, there will be a brief period of gusty north winds of 35
mph or less Friday morning for the coastal slopes of the san
bernardino county mountains and below the cajon pass. Weak
onshore flow returns Friday afternoon and continues into Saturday
night. High temperatures for Friday and Saturday with be near to
slightly warmer than today.
The marine layer will continue to deepen into early Friday with
marine layer low clouds spreading into portions of the inland
valleys tonight into Friday morning. Patchier low cloud coverage
is expected for Friday night into Saturday morning with the low
clouds mostly near the coast.
Sunday through Wednesday... As the low pressure trough moves east
over the rockies and a surface high moves into the great basin,
offshore pressure gradients will develop over socal. This will
bring a period of weak to locally moderate offshore flow,
developing Sunday and continuing into early Tuesday. The winds are
expected to peak late Sunday night into Monday morning with
strongest gust 35 to 40 mph. Inland humidity will fall to around
10-15 percent on Monday and to 10 percent or less on Tuesday.
There will be a warming trend Sunday through Tuesday, with inland
temperatures reaching into the 90s on Mon and tue. Cooling will|
begin to spread inland on Wednesday as weak onshore flow returns.
171530z... Coast valleys... Low clouds with bases 1200-1600 ft msl are
becoming more patchy but continue to cover coastal areas and far
western valleys. Patchy areas of reduced vis 3-5sm in br fg. Low
clouds and vis restrictions should clear by 18z. Isolated and
intermittent CIGS along coast are possible through the afternoon.
Low clouds redeveloping after 02z with bases 1500-2000 ft msl.
Moderate confidence low clouds will fill in most of the coastal
Mountains deserts...VFR conditions will prevail today and tonight,
with some variable high clouds. West to northwest sfc winds will
strengthen after 21z, gusting to 35 kts through mountain passes and
into adjacent desert corridors.
Northwest swell will produce seas of 6-8 feet late today through
early Friday in the outer waters south of san clemente island. A
short period will generate steep waves that could be hazardous to
small craft. Some wind gusts in the outer waters could exceed 20 kts
Onshore flow will spread cooling and higher humidity inland today,
with gusty southwest to west winds in the mountains and deserts
this afternoon and evening. The strongest gusts are expected to be
around 45 mph.
There will be a brief period of gusty north winds Friday morning
near the coastal slopes of the san bernardino county mountains and
below passes and canyons, with the strongest gusts mostly less
than 35 mph. The humidity will mostly remain 25 percent or above
during the windy period in the morning. The humidity will fall to
around 15 percent in parts of the inland empire Friday afternoon
even as winds weaken.
A period of weak to locally moderate strength offshore flow is
expected to develop on Sunday and continue into early Tuesday. The
strongest winds are expected from late Sunday night into Monday
afternoon with strongest gusts to 35 to 40 mph. The model trend
has been toward a solution with weaker winds.
The humidity will fall to 10-15 percent inland on Monday, with a
brief period of critical fire weather conditions in the mountains
and inland valleys Monday morning into Monday afternoon.
The winds will be weaker and more localized for Monday night into
Tuesday morning. The humidity for inland areas will fall to
around 10 percent Tuesday, with elevated fire weather conditions
for the mountains and inland valleys although winds will be weaker.
Skywarn activation is not requested. However weather spotters are
encouraged to report significant weather conditions.
Sgx watches warnings advisories
Public fire weather... Pg
aviation marine... Co
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||66 mi||130 min||S 1.9||67°F||1011 hPa||61°F|
|SDBC1 - 9410170 - San Diego, CA||76 mi||61 min||70°F||1010.6 hPa|
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. Follow links for more data.
|San Diego, Brown Field Municipal Airport, CA||64 mi||62 min||SE 4||6.00 mi||Fair with Haze||68°F||55°F||65%||1010.8 hPa|
Link to 5 minute data for KSDM
Wind History from SDM (wind in knots)
|1 day ago||W|
|2 days ago||NW||W||W||W||W||W||W||W||W||W||Calm||Calm||Calm||Calm||NE||NE||E||E||Calm||Calm||E||SE||Calm|
EDIT Weekend mode (on/off) (on/off)  Help One Week of Data
EDIT (on/off)  Help One Week of Data
Weather Map(on/off)  Help Weather Map
GEOS 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 (13,3,4,5)(on/off)  Help
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