Wednesday, March29, 2017 L-36.com


Marine Weather and Tides
Broadmoor, CA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 6:56AMSunset 7:32PM Wednesday March 29, 2017 12:14 AM PDT (07:14 UTC) Moonrise 7:16AMMoonset 8:37PM Illumination 3% Phase: Waxing Crescent; Moon at 2 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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PZZ545 Point Reyes To Pigeon Point To 10 Nm- 940 Pm Pdt Tue Mar 28 2017
.small craft advisory for rough bar in effect through Wednesday afternoon...
.small craft advisory in effect through late Wednesday night...
Tonight..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 9 to 12 ft at 16 seconds.
Wed..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 9 to 11 ft at 16 seconds.
Wed night..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 8 to 10 ft at 15 seconds. Slight chance of showers after midnight.
Thu..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 8 to 10 ft at 15 seconds. Slight chance of showers in the morning.
Thu night..NW winds 20 to 30 kt. Wind waves 4 to 6 ft. W swell 8 to 10 ft at 14 seconds.
Fri..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 9 to 12 ft.
Sat..NW winds 10 to 20 kt. Wind waves 2 to 4 ft. W swell 8 to 10 ft.
Sun..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 8 to 10 ft...increasing to 9 to 12 ft.
...san francisco bar/fourfathom bank forecast..... In the deep water channel...combined seas 9 to 12 ft with a dominant swell period of 17 seconds. Across the bar...combined seas 10 to 12 feet at 17 seconds. Maximum ebb current of 1.7 knots at 04:30 am Wednesday and 1.5 knots at 04:54 pm Wednesday.
PZZ500 940 Pm Pdt Tue Mar 28 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Gusty northwest winds will continue over the coastal waters into Wednesday. Gusty westerly winds are possible over the bays by Wednesday evening. A cold front will sweep southeastward over the bay area early Thursday morning with a slight chance of showers. Surface high pressure will then build over far northern california Thursday and Friday resulting in near gale force northwest winds over the coastal waters for late week.

7 Day Forecast for Marine Location Near Broadmoor, CA
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location: 37.74, -122.59     debug


Area Discussion for - San Francisco/Monterey Bay Area, CA
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Fxus66 kmtr 290359
afdmtr
area forecast discussion
national weather service san francisco bay area
859 pm pdt Tue mar 28 2017

Synopsis A gradual warming trend will continue through
Wednesday as high pressure builds over the region. Cooler and
breezy conditions return on Thursday as a cold front sweeps
through the region. While a few light rain showers will be
possible, most locations will remain dry. The ridge will then
rebuild back over the region late in the week resulting in another
warming trend heading into the upcoming weekend.

Discussion As of 8:59 pm pdt Tuesday... Temperatures finished
off the day an average of 10 degrees warmer than yesterday across
most locations. Highs topped out in the 60s to mid 70s this
afternoon... About 5 to 10 degrees above average under sunny skies.

High pressure situated over the eastern pacific will continue to
ridge across northern california this evening resulting in
continued dry weather, clear skies and moderate to locally gusty
winds across the district. Windiest location persist across the
north and east bay mountains as well as select locations along the
coastal ranges. Temperatures will continue to climb Wednesday as
high pressure prevails. Highs in the mid 60s and 70s with a few
lower 80s expected in the afternoon.

A shift in the pattern is expected late Wednesday night as an
upper level low approaches from the north. The low and associated
cold front will then slides south across the region bringing a
slight chance of precipitation and cooler temperatures to the
area. Models continue to indicate that the greatest rain chances
will remain to the east with only a slight chance over the
forecast area for late Wednesday night into Thursday. Gusty winds
are also expected to accompany this system with strongest winds
anticipated over elevated terrain of the north and east bays as
well as along the coastal ranges. Breezy conditions will continue
into Friday with our local high resolution model indicating a
period of strong northerly winds late Thursday night into Friday
morning in the wake of this system. Strongest winds are expected
between 09z-15z Friday and will again impact the north and east
bay mountains as well as the coastal ranges with coastal waters
also being impacted. Slightly warmer temperatures are expected
Friday.

From previous discussion... High pressure is forecast to rebuild
back across the region late Friday into the upcoming weekend. As a
result, inland areas will rebound back into the 70s and lower 80s
with mostly sunny skies. Medium range guidance suggest dry
weather and seasonably mild temperatures will persist into early
next week as well with the ridge aloft. While confidence this far
out remains low, the models do hint at the potential return to a
wetter pattern late next week.

Aviation As of 5:28 pm pdt Tuesday... Near high confidenceVFR
persists for the evening hours. Late afternoon visible imagery as
well as 24 hour trends indicate warmer and drier conditions all
supporting ongoingVFR; it's a gorgeous spring day out there.

While there's presently an absence of coastal stratus and/or fog
lower level inversions are strengthening under mid-upper level
ridging and there could be a more organized stratus and/or fog
pattern visiting the coastline as early as Wednesday afternoon
and evening. This would precede the passage of a cold front
Thursday morning thus an intrusion of stratus and/or fog is
increasingly likely from later Wednesday evening into Thursday
morning. Just a heads up, following TAF cycles may need to include
more in the way of cigs.

Vicinity of ksfo... Westerly winds 20 to near 30 knots til 05z then
lighter westerly winds forecast for the remainder of tonight. Gusty
westerly winds resume on Wednesday.VFR.

Sfo bridge approach... Similar to ksfo.

Monterey bay terminals... Westerly winds occasionally gusting to near
20 knots early this evening, lighter winds quickly returning thereafter.

Vfr except possibly could see local MVFR CIGS near sunrise Wednesday,
otherwise it looks favorable forVFR in 00z TAF cycle. Stratus and/or
fog are possible Wednesday evening and night.

Marine As of 4:41 pm pdt Tuesday... Moderate and gusty northwest
winds will continue through the next several days as high pressure
strengthens over the eastern pacific and tightens the pressure
gradient along the central coast of california. Northwest swell
will slowly decrease some tonight and will continue to through
about Thursday morning before building again late Thursday and
through the weekend.

Mtr watches/warnings/advisories
Tngt 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... Mry bay until 9 pm
public forecast: cw
aviation: canepa
marine: bm
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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46237 - San Francisco Bar, CA (142) 4 mi44 min 56°F9 ft
FTPC1 - 9414290 - San Francisco, CA 8 mi44 min SSW 2.9 G 5.1 56°F 56°F1022.6 hPa
PXSC1 11 mi44 min 59°F 51°F
46026 - SAN FRANCISCO - 18NM West of San Francisco, CA 13 mi84 min NW 18 G 19 56°F 55°F10 ft1022.5 hPa (+0.5)
OKXC1 - 9414776 - Oakland (Berth 34), CA 14 mi50 min 59°F 1022.4 hPa
OMHC1 - 9414769 - Oakland Middle Harbor Met, CA 14 mi44 min NW 1.9 G 1.9
OBXC1 14 mi44 min 60°F 50°F
AAMC1 - 9414750 - Alameda, CA 16 mi44 min WSW 2.9 G 4.1 59°F 60°F1022.8 hPa
RCMC1 - 9414863 - Richmond, CA 16 mi44 min N 1.9 G 1.9 61°F 58°F1022.1 hPa
LNDC1 17 mi50 min N 4.1 G 5.1 62°F 1022.3 hPa
PPXC1 - 9414847 - Richmond (Point Potrero), CA 17 mi44 min N 4.1 G 5.1 64°F 1022.6 hPa
RTYC1 - 9414523 - Redwood City, CA 26 mi44 min Calm G 1 58°F 61°F1022 hPa
DPXC1 - 9415141 - Davis Point, San Pablo Bay, CA 28 mi44 min SW 2.9 G 4.1 59°F 1022.2 hPa
46012 - HALF MOON BAY - 24NM South Southwest of San Francisco, CA 30 mi84 min NW 23 G 27 57°F 56°F13 ft1021.8 hPa (+0.0)
UPBC1 32 mi44 min W 8.9 G 11
MZXC1 - 9415102 - Martinez-Amorco CA 32 mi44 min WSW 6 G 8 60°F 57°F1022.5 hPa47°F
PCOC1 - 9415144 - Port Chicago, CA 36 mi44 min SSW 6 G 9.9 58°F 58°F1021.9 hPa
PSBC1 - 9415115 - Pittsburg (Suisun Bay), CA 43 mi44 min W 7 G 11 65°F 1021.5 hPa
SFXC1 - San Francisco Bay Reserve, CA 44 mi89 min W 1 57°F 1021 hPa50°F
46214 - Point Reyes, CA (029) 49 mi52 min 55°F12 ft

Wind History for San Francisco, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
San Francisco, San Francisco International Airport, CA15 mi18 minW 710.00 miA Few Clouds58°F45°F62%1022.6 hPa
Half Moon Bay Airport, CA17 mi19 minENE 37.00 miFair52°F44°F77%1023 hPa
Oakland, Metro Oakland International Airport, CA20 mi21 minW 310.00 miFair59°F53°F81%1022.6 hPa
San Carlos Airport, CA23 mi19 minN 010.00 miFair57°F44°F63%1023 hPa

Wind History from SFO (wind in knots)
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Last 24hrW8W6W7W8S4W8NW5NW4W7NW104W16W17W19
G26
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1 day agoW12W13W8NW4NW7NW7W10W12NW10NW13NW14
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2 days agoW63S4S5S5SW4SW3SE4S3SE5E7E11E9S6S12S11S12S15S14S8W10W16W14W9

Tide / Current Tables for San Francisco Bar, California
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San Francisco Bar
Click for Map
Wed -- 12:28 AM PDT     5.76 feet High Tide
Wed -- 06:31 AM PDT     0.01 feet Low Tide
Wed -- 06:59 AM PDT     Sunrise
Wed -- 08:16 AM PDT     Moonrise
Wed -- 01:05 PM PDT     5.22 feet High Tide
Wed -- 06:41 PM PDT     0.82 feet Low Tide
Wed -- 07:31 PM PDT     Sunset
Wed -- 09:37 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.75.74.93.62.10.80.10.10.71.72.944.95.24.94.12.91.710.91.42.33.54.6

Tide / Current Tables for South Channel, San Francisco Bay Approach, California Current
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South Channel
Click for Map
Wed -- 01:42 AM PDT     -0.00 knots Slack
Wed -- 04:34 AM PDT     -1.93 knots Max Ebb
Wed -- 06:59 AM PDT     Sunrise
Wed -- 07:46 AM PDT     0.01 knots Slack
Wed -- 08:15 AM PDT     Moonrise
Wed -- 10:47 AM PDT     1.63 knots Max Flood
Wed -- 02:23 PM PDT     -0.00 knots Slack
Wed -- 04:59 PM PDT     -1.63 knots Max Ebb
Wed -- 07:30 PM PDT     Sunset
Wed -- 08:00 PM PDT     0.00 knots Slack
Wed -- 09:36 PM PDT     Moonset
Wed -- 10:58 PM PDT     1.44 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.10.5-0.3-1.2-1.8-1.9-1.4-0.60.20.91.51.61.40.90.3-0.6-1.3-1.6-1.3-0.7-00.71.21.4

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for San Francisco/Monterey Bay Area, CA (3,6,7,8)
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Ground Weather Radar Station San Francisco Bay Area, 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.