Marine Weather and Tides
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 7:49AM||Sunset 8:24PM||Saturday March 23, 2019 2:08 PM PDT (21:08 UTC)||Moonrise 10:47PM||Moonset 7:37AM||Illumination 91%|
7 Day Forecast for Marine Location Near Yakutat CDP, AKHourly EDIT Help
Area Discussion for -  (on/off)  Help NOTE: mouseover dotted underlined text for definition
|Fxak67 pajk 231402|
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
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
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
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|Stations||Dist||Age||Wind||Air Temp||Water Temp||Waves||Pressure||DewPt|
|YATA2 - 9453220- Yakutat, AK||7 mi||45 min||43°F||1015.4 hPa|
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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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