Sunday, February17, 2019 L-36.com


Marine Weather and Tides
Poway, 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 6:28AMSunset 5:36PM Sunday February 17, 2019 8:53 PM PST (04:53 UTC) Moonrise 4:35PMMoonset 5:58AM Illumination 98% Phase: Waxing Gibbous; Moon at 13 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- 125 Pm Pst Sun Feb 17 2019
.gale warning in effect through Monday morning...
Tonight..Wind nw 15 to 25 kt with gusts to 30 kt. Combined seas 11 ft dominant period 9 seconds. Chance of showers.
Washingtons birthday..Wind nw 10 to 20 kt with gusts to 25 kt. Wind waves 4 ft. SWell W 6 to 9 ft at 10 seconds.
Mon night..Wind N 10 to 20 kt with gusts to 25 kt. Wind waves 4 to 5 ft in the evening...becoming 2 ft or less. SWell W 5 to 7 ft at 10 seconds.
Tue..Wind ne to 10 kt with gusts to 15 kt... Becoming W in the afternoon. Wind waves 2 ft or less. SWell W 3 to 5 ft at 10 seconds.
Tue night..Wind nw to 10 kt. Gusts to 15 kt in the evening. Wind waves 2 ft or less. SWell W 3 to 4 ft at 10 seconds.
Wed..Wind sw 10 kt. Gusts to 15 kt in the afternoon. Wind waves 2 ft or less. SWell W 2 to 3 ft.
Wed night..Wind W 10 to 15 kt...becoming 20 to 25 kt after midnight. Wind waves 5 ft. SWell W 3 to 6 ft. Chance of showers.
Thu..Wind W 15 to 25 kt. Wind waves 5 ft. SWell W 6 to 8 ft. Showers likely.
Thu night..Wind nw 10 to 20 kt. Wind waves 4 ft. SWell W 6 to 8 ft. Chance of showers.
Fri..Wind E 10 kt...becoming W in the afternoon. Gusts to 20 kt. Wind waves 2 ft or less...becoming 3 ft in the afternoon. SWell W 3 to 6 ft. Slight chance of showers.
Fri night..Wind nw 10 to 15 kt. Wind waves 3 ft in the evening...becoming 2 ft or less. SWell W 3 to 4 ft.
PZZ700 125 Pm Pst Sun Feb 17 2019
Synopsis for the far southern california coast.. A cold front over the northern california waters this morning will move south across the southern california waters tonight. A gale warning is in effect through Monday morning for 20 to 30 kt winds gusting to 35 kt. Large seas and steep waves will contribute to hazardous boating conditions. Showers today and tonight will ending early Monday morning. Lighter winds are forecast Tuesday and Wednesday before another system arrives Thursday.


7 Day Forecast for Marine Location Near Poway, CA
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location: 33.03, -117     debug


Area Discussion for - San Diego, CA
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Fxus66 ksgx 172118
afdsgx
area forecast discussion
national weather service san diego ca
118 pm pst Sun feb 17 2019

Synopsis
A disturbance dropping south along the coast will move over socal
through tonight with gusty westerly winds and showers of rain and
mountain snow. The snowfall will add up in the mountains, and the
combination of locally heavy amounts and strong westerly winds will
make for dangerous winter travel conditions there this evening. At
lower elevations, it will mostly be light rain showers that could be
briefly heavy. Fair skies return on Monday, but continued cold.

Slight warming is on tap for Tuesday and Wednesday ahead of another
cold shot later in the week, accompanied by more showers of rain and
mountains snow.

Discussion For extreme southwestern california including orange...

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

Winter storm warnings in effect for the mountains with a sharp
deterioration in weather conditions by late this afternoon.

More cold this week with the coldest airmass of the season
possible by Thursday and Friday.

Satellite imagery at midday shows clouds backed up against the
coastal mtn slopes, with more widespread cloud cover advancing from
the nw. Farther to the north, an extensive open-cell CU pattern
offshore, suggestive of strong cold air advection, was moving south
along the coast. Radar showed small, weak, patchy echoes along and
west of the mts moving rapidly SE with stronger echoes near the
channel islands. Rainfall observations over the past 3 hours were
mainly in san diego county and around one-tenth of an inch or less.

Based on sfc observations, the snow level was near 4400 ft in san
diego county. Moderate onshore sfc pressure gradients still were
trending onshore, supporting west winds of 25 to 35 mph with peak
gusts to near 50 mph in windier mtn areas. Along the coast, winds
were gusting to around 25 mph at noon.

The 12z miramar sounding has a pw of just over 1 2 inch with
considerable instability below 10k ft. This is forecast to persist
and will enhance shower development headed our way later today. Due
to the strong flow in the mid-levels of close to 50 kts, these
showers will move rapidly, minimizing precip accumulation at lower
elevations. Meantime the perpendicular trajectory into our mountain
ranges will enhance accumulation there. Even though the san
bernardinos are a transverse range, significant precip amounts are
indicated there as well, mainly due to greater elevation and
proximity to the developing mid-level circulation and a lower snow
level to enhance liquid to snow ratios. Please check the laxwswsgx
for detail on snow levels and amounts.

Based on the latest hires models... Precip will increase between 3
and 5 pm pst. At that time, the more concentrated precip area up the
coast will arrive with more widespread showers. It may not be until
around 5 pm that this reaches san diego proper. Expect light amounts
of rain overall, punctuated by brief heavy spurts of rain and even a
few ice pellets. Winds will be brisk today, but take a leg up late
this afternoon and evening with strong gusts expected most areas by
evening. In the mountains, they will exceed high wind criteria at
times with gusts to 65 mph or more on the ridges. This is supported
by strong 850 mb winds of 35 to 50 kts. In the deserts, rotors may
develop near the foothills resulting in strong, shifting wind gusts.

A broad trough over the west will expand farther south today as a
shortwave and associated jet streak drop south along the west coast
and round the base of the trough tonight. Instability and sufficient
moisture will interact with the lift associated with this feature to
generate significant snows over the mountains of southern
california. The strong upslope flow into the mts will enhance lift,
while the cold air ensures snow-levels remain suppressed. Strong and
gusty westerly winds are forecast as well, so winter storm warnings
are in effect through tonight.

The energy with this wave will slip east on Monday, and despite fair
skies and strengthening february sun, the cold trough over the area
will ensure a cold presidents day, with daytime temperatures well
below normal. Only minor warming is on tap for Tue Wed under
continued cold, northerly flow aloft.

By Thursday, another shortwave will drop south along the west coast,
amplifying the trough and cold air advection into socal. Ahead of
this, once again, some moisture will be drawn in off the pacific,
setting the stage for showers of rain and mountain snow. Latest
gfs ec guidance suggests the system will remain mostly land-locked,
limiting precip amounts. The GFS closes off a low near needles,
while the ECMWF continues the digging, both with strong cold air
advection indicated for Thursday. The ECMWF is the most aggressive
with the precip and suggests very low snow levels as our 1000-500 mb
thickness falls to between 526 and 528 dm. This could bring the
lowest snow levels yet this winter and a possible widespread frost
and or freeze.

After Friday, it looks like the cold air will retreat back to the
north as flow aloft becomes more zonal. Expect a fair, dry, and
warmer period by next weekend.

Aviation
172100z... Coast valleys... Sct-bkn035-050 with tops to 8000 ft.

Scattered shra today, most widespread this afternoon and evening
with vis 5 miles and CIGS 020 in the heaviest showers. Strong west
winds 15 to 25 kt with gusts up to 30 kt the afternoon and evening,
strongest at ksan. Showers ending after 08z Monday.

Mountains... Bkn-ovc with mountains obscured in clouds fog pcpn
through tonight. Clear to partly cloudy in the deserts. Strong w
winds 20-30 kt with gusts to 50 kt in the mountains and down the
eastern slopes into the deserts through 08z with stg uddfs and llws.

Marine
Gale warning in effect through 10 am Monday for strong wnw winds 20-
30 kt with gusts to 35 kt through Monday morning.

A mix of steep waves westerly swells will result in hazardous
boating conditions today and tonight. Winds and waves will decrease
to 10-20 kt with gusts to 25 kt on Monday.

Beaches
A beach hazards statement is in effect through 4 pm today for
elevated surf, strong rip currents and minor coastal flooding during
the times of morning high tide (6.3 ft at ~7 am). Large wnw swells
of 10-12 ft 8-9 sec from 290 degrees will bring elevated surf today,
highest in southern san diego county with sets to 7 ft.

Skywarn
Skywarn activation may be needed this evening for winter storm
reports in the mountains. Weather spotters are encouraged to report
significant weather conditions.

Sgx watches warnings advisories
Ca... Winter storm warning until 6 am pst Monday for san diego county
mountains.

Wind advisory until 3 am pst Monday for coachella valley-san
diego county deserts-san gorgonio pass near banning.

Winter weather advisory until 3 am pst Monday for apple and
lucerne valleys-santa ana mountains and foothills.

Winter storm warning until 3 am pst Monday for riverside county
mountains-san bernardino county mountains.

Wind advisory until 10 pm pst this evening for orange county
coastal areas-orange county inland areas-san bernardino and
riverside county valleys-the inland empire-san diego county
coastal areas-san diego county valleys.

Beach hazards statement until 4 pm pst this afternoon for orange
county coastal areas-san diego county coastal areas.

Pz... Gale warning until 10 am pst Monday for coastal waters from san
mateo point to the mexican border and out to 30 nm-waters
from san mateo point to the mexican border extending 30 to
60 nm out including san clemente island.

Public... 10
aviation marine beaches... Rodriguez


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LJAC1 - 9410230 - La Jolla, CA 18 mi41 min W 18 G 22 55°F 59°F1017.1 hPa
46254 18 mi85 min 59°F8 ft
LJPC1 - La Jolla, CA (073) 18 mi33 min W 21 G 28 7 ft
46225 - Torrey Pines Outer, CA (100) 22 mi53 min 59°F7 ft
SDBC1 - 9410170 - San Diego, CA 24 mi41 min 1017.1 hPa
46224 - Oceanside Offshore, CA (045) 27 mi53 min 59°F8 ft
TIXC1 - Tijuana River Reserve, CA 32 mi68 min WNW 12 54°F 1018 hPa48°F
46235 33 mi53 min 58°F7 ft
46258 33 mi53 min 59°F8 ft
46232 - Point Loma South, CA (191) 41 mi53 min 59°F9 ft

Wind History for La Jolla, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ramona, Ramona Airport, CA5 mi60 minW 119.00 miRain46°F39°F79%1015.8 hPa
San Diego, Miramar MCAS/Mitscher Field Airport, CA13 mi2 hrsSW 1210.00 miOvercast54°F46°F75%1016.1 hPa
Gillespie Field Airport, CA14 mi66 minW 13 G 175.00 miLight Rain52°F42°F72%1016.9 hPa
San Diego, Montgomery Field, CA15 mi60 minW 17 G 2310.00 miA Few Clouds52°F39°F64%1016.7 hPa
Carlsbad, McClellan-Palomar Airport, CA17 mi60 minW 11 G 1610.00 miMostly Cloudy54°F39°F59%1015.9 hPa
Oceanside, Oceanside Municipal Airport, CA23 mi61 minW 10 G 2310.00 miA Few Clouds53°F39°F61%1015.9 hPa
San Diego, San Diego International-Lindbergh Field, CA23 mi62 minWNW 13 G 2210.00 miPartly Cloudy55°F42°F62%1017.7 hPa

Wind History from RNM (wind in knots)
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Last 24hrE3CalmW4W8W11W8W8NW7NW6W3S3W7W9SW12W11W14W19
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1 day agoSW10W12W8W14
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W7W9
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NW6W12NW8W4CalmCalmW9W9W8W10W8NW13
G19
W12W13NW9W5CalmCalm
2 days agoW5--Calm----CalmCalmCalmCalmCalmCalmCalm3Calm6W7W9W11W10W10W9W6SW3S3

Tide / Current Tables for La Jolla, Scripps Pier, California
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La Jolla
Click for Map
Sun -- 12:35 AM PST     1.77 feet Low Tide
Sun -- 04:58 AM PST     Moonset
Sun -- 06:30 AM PST     Sunrise
Sun -- 06:49 AM PST     6.33 feet High Tide
Sun -- 01:59 PM PST     -1.48 feet Low Tide
Sun -- 03:36 PM PST     Moonrise
Sun -- 05:36 PM PST     Sunset
Sun -- 08:25 PM PST     4.09 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.91.82.33.14.35.36.16.35.94.73.21.5-0.1-1.1-1.5-1.1-0.21.22.53.5443.52.7

Tide / Current Tables for La Jolla, Scripps Pier, California (3)
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La Jolla
Click for Map
Sun -- 12:54 AM PST     1.52 feet Low Tide
Sun -- 04:58 AM PST     Moonset
Sun -- 06:30 AM PST     Sunrise
Sun -- 07:11 AM PST     6.45 feet High Tide
Sun -- 02:09 PM PST     -1.57 feet Low Tide
Sun -- 03:36 PM PST     Moonrise
Sun -- 05:36 PM PST     Sunset
Sun -- 08:36 PM PST     4.38 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.71.51.82.63.8566.46.25.23.71.90.2-1-1.6-1.3-0.40.92.43.64.34.33.82.9

Weather Map and Satellite Images
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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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Wind Forecast for San Diego, CA (23,6,7,8)
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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.