Friday, February15, 2019 L-36.com


Marine Weather and Tides
Bolinas, CA

Version 3.4
What's New / NOTES
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 6:57AMSunset 5:50PM Friday February 15, 2019 10:46 AM PST (18:46 UTC) Moonrise 1:40PMMoonset 3:34AM Illumination 85% Phase: Waxing Gibbous; Moon at 11 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
    EDIT      (on/off)   Help
PZZ545 Point Reyes To Pigeon Point To 10 Nm- 857 Am Pst Fri Feb 15 2019
.small craft advisory for rough bar in effect through late tonight...
.small craft advisory in effect through Saturday afternoon...
Today..SW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 5 to 7 ft at 17 seconds...increasing to 9 to 12 ft at 17 seconds in the afternoon. SWell sw 3 to 5 ft. Showers in the morning. Slight chance of Thunderstorms through the day. Showers likely in the afternoon.
Tonight..W winds 15 to 25 kt with occasional gusts to 30 kt. Wind waves 5 to 7 ft. W swell 13 to 16 ft at 16 seconds and sw 3 to 4 ft at 10 seconds. Showers likely.
Sat..NW winds 15 to 25 kt. Gusts up to 30 kt in the morning. Wind waves 4 to 6 ft. W swell 13 to 16 ft at 15 seconds. Showers likely in the morning, then chance of showers in the afternoon.
Sat night..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 10 to 13 ft at 15 seconds. Chance of showers.
Sun..NW winds 10 to 20 kt. Wind waves 2 to 4 ft. W swell 7 to 9 ft at 14 seconds. Chance of showers in the morning, then slight chance of showers in the afternoon and evening.
Washingtons birthday..NW winds 10 to 20 kt. Wind waves 3 to 5 ft. NW swell 4 to 6 ft.
Tue..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 4 to 6 ft.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...combined seas 10 to 13 ft with a dominant period of 17 seconds. Across the bar...combined seas 11 to 14 ft with a dominant period of 17 seconds. Maximum ebb current of 2.9 knots at 12:19 pm Friday and 1.5 knots at 01:31 am Saturday.
PZZ500 857 Am Pst Fri Feb 15 2019
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Cooler temperatures, gusty west to northwest winds, scattered showers and possibly a few Thunderstorms will continue into the weekend. A large northwest swell will arrive across the waters today and continue into the weekend.


7 Day Forecast for Marine Location Near Bolinas, CA
   Hourly   EDIT   Help
location: 37.67, -123.15     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 kmtr 151759
afdmtr
area forecast discussion
national weather service san francisco bay area
959 am pst Fri feb 15 2019

Synopsis Cool and showery conditions are expected today
through the weekend as a cold upper trough digs south along the
west coast. Snow levels will lower Friday into Saturday with the
potential for accumulating snowfall in the region's highest peaks.

Overnight temperatures will turn much colder by early next week
as dry weather develops and skies clear. Unsettled conditions
could return for the latter half of next week.

Discussion As of 09:11 am pst Friday... No major changes to the
forecast this morning as isolated to scattered showers continue to
move inland across the region. As expected, numerous reports of
very small hail are being reported region-wide as cold air
advection continues aloft. This too has resulted in lowering snow
levels with air temperature below freezing in the region's highest
peaks. Thus, cannot rule out snow showers in those higher
elevations.

Showers will persist as a reinforcing colder mid upper level
trough descends southward along the west coast through the
weekend. This too will lower snow levels with increasing chances
for accumulating snowfall in elevations above 2,500-3,000 feet
while rain showers persist off and on across the region. Will have
additional updates and details with respect the forecast for the
remainder of the weekend this afternoon. Until then, please see
the previous forecast discussion below.

Prev discussion As of 2:53 am pst Friday... A line of showers
moved through the district earlier producing brief, heavy rain as
it passed. This line was associated with a cold front that has
moved through. Scattered showers are expected to persist today
through the weekend as the area remains in a cold, unstable
airmass.

Temperatures have dropped considerably with the passage of the
cold front. Current readings at area airports are generally 15
degrees colder than they were 24 hours ago with mid to upper 40s
being reported. At higher elevations, automated weather stations
are picking up current temperatures in the 30s and lower 40s. Snow
levels are forecast to drop as low as 2500 feet today and perhaps
below 2000 feet by late Saturday night. Thus, snowfall is likely
on bay area peaks and accumulating snowfall is likely above 3000
feet. Also, small hail is likely at times with heavier showers.

Flood waters continue to recede in most areas. The flood warning
for the carmel river was cancelled last night, however, water
levels on the lower russian river continue to rise and is forecast
to crest within the next hour or two. A flood warning remains in
effect for the russian river near guerneville.

Drier weather is forecast to return by the beginning of the week.

Clearing skies will result in cold overnight temperatures.

Unsettled weather is possible by midweek.

Aviation As of 9:59 am pst Friday... Showers will continue
across area terminals today in the cold post frontal environment.

Vfr except MVFR in heavy showers, steadily lowering freezing
levels with snow at highest elevations through the weekend. Deeper
layer cooling arrives from the north later today, 500 mb
temperatures exceeding -30 celsius into tonight. Steepening
temperature lapse rates initiating isolated thunderstorms favoring
the bay area by late afternoon and evening, convective potential
up to several hundred j kg; will amend to add thunderstorms in
tafs as needed. Generally much less wind today, though
occasionally gusts to 20-25 knots nearest showers or isolated
thunderstorms are possible.

Vicinity of ksfo...VFR, gusty wind to 20-25 knots today. Showers
today tempo MVFR in showers mid to late evening.

Sfo bridge approach... Similar to sfo.

Monterey bay terminals...VFR except MVFR in showers particularly
this morning. SE wind becoming onshore and locally gusty to 20
knots by late morning. More showers arriving tonight and Saturday
morning.

Beaches 25 feet swell with moderate period 16 seconds reported
from buoy 59 located 400 miles northwest of the bay area. Large,
dangerous surf will reach the coastal waters today, a high surf
advisory begins 10 am today continuing to 9 pm Saturday. Northwest
swell 14 to 17 feet will produce breakers as high as 18 to 25 feet
along west and northwest facing beaches. High surf will also bring
coastal flooding impacts during high tide today. A coastal flood
advisory is in effect 5 am to 10 am this morning.

Marine As of 09:42 am pst Friday... Cooler temperatures, gusty
west to northwest winds, scattered showers and possibly a few
thunderstorms will continue into the weekend. A large northwest
swell will arrive across the waters today and continue into the
weekend.

Mtr watches warnings advisories
Tday High surf advisory... Caz006-505-509-529-530
coastal flood advisory... Caz006-505-506-508-509-529-530
sca... Pt arena to pt reyes 0-10 nm
sca... Pt reyes to pigeon pt 0-10 nm
sca... Pigeon pt to pt pinos 0-10 nm
sca... Pt pinos to pt piedras blancas 0-10 nm
sca... Pt arena to pigeon pt 10-60 nm
sca... Pigeon pt to pt piedras blancas 10-60 nm
sca... Rough bar advisory for sf bar
sca... Sf bay
sca... Mry bay
public forecast: rgass sims
aviation: cw
marine: cw
visit us at

Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 17 mi27 min WSW 18 G 23 52°F 55°F1015.8 hPa
PRYC1 - 9415020 - Point Reyes, CA 24 mi29 min 55°F1014.6 hPa
46214 - Point Reyes, CA (029) 26 mi47 min 55°F13 ft
FTPC1 - 9414290 - San Francisco, CA 37 mi35 min WNW 2.9 G 6 50°F 54°F1015.5 hPa
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 40 mi27 min WNW 19 G 29 55°F1015.1 hPa
TIBC1 - Tiburon Pier, San Francisco Bay, CA 40 mi36 min N 5.1 48°F 1015 hPa
PXOC1 - 9414311 - San Francisco (Pier 1), CA 41 mi29 min W 5.1 G 14 53°F 1014.2 hPa
PXSC1 41 mi35 min 52°F 41°F
RCMC1 - 9414863 - Richmond, CA 43 mi29 min 53°F
OBXC1 44 mi29 min 51°F 39°F
OKXC1 - 9414776 - Oakland (Berth 34), CA 44 mi29 min WSW 4.1 G 8.9 50°F 1015.4 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 44 mi35 min WSW 16 G 18
PPXC1 - 9414847 - Richmond (Point Potrero), CA 45 mi29 min WSW 6 G 8.9 50°F 1015.6 hPa
AAMC1 - 9414750 - Alameda, CA 46 mi35 min WSW 9.9 G 13 51°F 52°F1015.9 hPa
LNDC1 47 mi29 min WSW 12 G 16 51°F 1015.4 hPa

Wind History for Point Reyes, CA
(wind in knots)    EDIT      (on/off)   Help
Last
24hr
1 day
ago
2 days
ago

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Francisco, San Francisco International Airport, CA42 mi51 minSW 14 G 2110.00 miPartly Cloudy53°F39°F59%1015.1 hPa

Wind History from SFO (wind in knots)
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
Last 24hrW11W8W14
G17
W19
G24
W17
G24
SW16
G21
SW11SW13SW20
G28
SW14
G23
S14
G23
SW20
G28
SW10SW14SW15SW15W23
G28
SW11SW10SW8SW12SW11SW11SW14
G21
1 day agoE11SE7SE10S25
G40
S24
G33
SE10
G24
SE6E8SE8S14
G27
SE7SE16SE13SE22
G29
S27
G35
S22
G34
S33
G46
S36
G54
S30
G45
SW26
G33
SW22
G31
SW11
G17
S13SW11
G17
2 days agoSE5CalmCalmE9SE7SW4NE4E4E7SE12E6SE9E9E17E10SE13
G20
SE22
G27
SE18
G28
SE21E17E18E20E22E15

Tide / Current Tables for Southeast Farallon Island, California
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Southeast Farallon Island
Click for Map
Fri -- 12:34 AM PST     2.98 feet Low Tide
Fri -- 03:32 AM PST     Moonset
Fri -- 06:31 AM PST     5.84 feet High Tide
Fri -- 07:01 AM PST     Sunrise
Fri -- 01:39 PM PST     Moonrise
Fri -- 01:56 PM PST     -0.27 feet Low Tide
Fri -- 05:50 PM PST     Sunset
Fri -- 08:59 PM PST     4.23 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
333.33.94.75.35.85.85.34.43.11.80.7-0.1-0.300.61.52.53.444.24.13.7

Tide / Current Tables for Point Reyes, California Current
   EDIT      (on/off)   Help   One Week of Data
Point Reyes
Click for Map
Fri -- 02:06 AM PST     0.00 knots Slack
Fri -- 03:33 AM PST     Moonset
Fri -- 05:02 AM PST     0.72 knots Max Flood
Fri -- 07:02 AM PST     Sunrise
Fri -- 07:52 AM PST     -0.00 knots Slack
Fri -- 11:14 AM PST     -1.38 knots Max Ebb
Fri -- 01:38 PM PST     Moonrise
Fri -- 03:18 PM PST     0.00 knots Slack
Fri -- 05:50 PM PST     Sunset
Fri -- 06:23 PM PST     1.05 knots Max Flood
Fri -- 09:43 PM PST     -0.00 knots Slack
Fri -- 11:53 PM PST     -0.66 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
-0.5-0.3-00.30.60.70.60.4-0.1-0.6-1.1-1.4-1.3-1-0.7-0.20.40.8110.80.4-0.1-0.5

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_P
GOES Local Image of CentralWestCoast    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 Francisco/Monterey Bay Area, CA (13,3,4,5)
      (on/off)   Help

Ground Weather Radar Station San Francisco Bay Area, CA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.