Saturday, March23, 2019 L-36.com


Marine Weather and Tides
Yakutat, AK

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 7:49AMSunset 8:24PM Saturday March 23, 2019 2:08 PM PDT (21:08 UTC) Moonrise 10:47PMMoonset 7:37AM Illumination 91% Phase: Waning Gibbous; Moon at 18 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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PKZ053 Yakutat Bay- 333 Am Akdt Sat Mar 23 2019
.small craft advisory due to seas through this evening...
Today..E wind 15 kt. Seas 10 ft, except 5 ft E side of the bay. Rain.
Tonight..NE wind 10 kt. Seas 8 ft, except 4 ft E side of the bay. S swell. Showers in the evening.
Sun..NE wind 10 kt in the morning becoming light. Seas 6 ft, except 2 ft or less E side of the bay. SE swell.
Sun night..N wind 10 kt. Seas 6 ft, except 2 ft or less E side of the bay. SE swell.
Mon..NE wind 15 kt. Seas 5 ft.
Tue..NE wind 15 kt. Seas 4 ft.
Wed..NE wind 15 kt. Seas 4 ft.


7 Day Forecast for Marine Location Near Yakutat CDP, AK
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location: 59.56, -139.61     debug


Area Discussion for -
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Fxak67 pajk 231402
afdajk
southeast alaska forecast discussion
national weather service juneau ak
602 am akdt Sat mar 23 2019

Short term through Sunday night ... An old occluded frontal
boundary is moving over southeast alaska and the eastern gulf of
alaska this morning from south to north. Models are trying to spin
up a surface low along this boundary, but a lack of vorticity and
jet support are hampering this development. Satellite imagery is
not showing any meaningful turning to suggest the formation of a
surface low, but then, colder higher clouds are obscuring the
lower levels. Ascat data from Friday evening does indicate some
pronounced turning and if this has remained intact through the
night, there may very well be a surface low forming as suggested
by the models.

Surface winds associated with the passage of this frontal feature
have been observed to increase abruptly in advance, and then
slowly diminish after passage. Although the tightest surface
pressure gradient is farther to the west than originally forecast,
strong wind gusts in excess of 40 mph were first observed in
prince rupert. These gusts reached the southern inner channels
between 2 and 4 am akdt Saturday. As the boundary continues to
move north today, a burst in winds will occur as it passes by, but
the farther north, the less pronounced this increase in winds and
wind gusts will be.

As this is an old occluded frontal boundary and is generally
dying a slow death, precip rates have not been overly high. As
with the winds, rain this morning will diminish and give way to
shower activity this afternoon before ending altogether late
tonight for the panhandle and early Sunday morning for the
northeast gulf coast. Offshore flow will then set up, resulting in
partial clearing of the clouds and a generally fine spring day on
Sunday with highs in the low to mid 50s.

Long term Monday through Friday as of 9pm Friday. On Monday,
weak variable flow at the jet stream level takes a turn out of
the north due to a high amplitude ridge building over the state.

At the surface, high pressure centered over the gulf will slowly
shift to the western gulf and an inverted trough will be over the
inner channels. The upper level and surface pattern support dry
weather and northerly winds.

Through Tuesday, the upper level ridge will continue to amplify,
extending up to the arctic then back down across the yukon and
finally across the SE alaska. It may bring slightly cooler air
with it, but nothing really notable. Models are brining some
moisture along with the jet streak and a vorticity MAX wave. Some
models are developing this into a closed upper low and will need
to be monitored over the next few runs for more development. Most
of the moisture should stay on the eastern side of the coast mtns
but will certainly see some increased cloud cover. Expect winds to
pick up for a period tues night into Wed along with mountain wave
potential. As the vort upper level low tracks south, a weak
surface reflection (or the inverted trough already in place) may
develop once it hits the gulf waters, so pop has been increased
to chance over the southern inner channels. Behind this feature,
the flow shifts more NE as the upper level ridge tips over. This
will help to keep us dry with likely downslope warming for
Wednesday.

The upper level ridge closes off with the high pressure center
shifting south through Friday which will cause flow aloft to turn
onshore, although perhaps not for long. Models disagree on how
quickly the high pressure pushes off to the south. The surface
inverted trough looks to weaken, causing winds to become light and
variable, however some have it redevelop right away with no precip
in sight.

Ajk watches warnings advisories
Public... Strong wind until 6 am akdt early this morning for akz028.

Marine... Small craft advisory for pkz022-031>036-041>043-051-052.

Small craft advisory due to seas for pkz053.

Fritsch eal ferrin
visit us at http:

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
YATA2 - 9453220- Yakutat, AK 7 mi45 min 43°F1015.4 hPa

Airport Reports
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Tide / Current Tables for
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Tide / Current Tables for
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Weather Map and Satellite Images
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wmap_P
GOES Local Image of PacificNorthwest    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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (17,4,5,8)
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Ground Weather Radar Station Biorka Is., AK
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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.