Monday, August26, 2019 L-36.com


Marine Weather and Tides
Petersburg, AK

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 5:42AMSunset 8:16PM Monday August 26, 2019 1:26 AM AKDT (09:26 UTC) Moonrise 12:29AMMoonset 6:19PM Illumination 18% Phase: Waning Crescent; Moon at 25 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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PKZ035 Sumner Strait- 311 Pm Akdt Sun Aug 25 2019
.small craft advisory Monday...
Tonight..S wind 15 kt becoming E late. Seas 3 ft. Rain late.
Mon..SE wind 30 kt. Seas 6 ft. Rain.
Mon night..SE wind 20 kt. Seas 4 ft. Rain in the evening.
Tue..S wind 15 kt. Seas 3 ft.
Tue night..Light winds. Seas 2 ft or less.
Wed..Light winds. Seas 2 ft or less.
Thu..Light winds. Seas 2 ft or less.
Fri..Light winds. Seas 2 ft or less.


7 Day Forecast for Marine Location Near Petersburg, AK
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location: 56.63, -132.93     debug


Area Discussion for -
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Fxak67 pajk 252251
afdajk
southeast alaska forecast discussion
national weather service juneau ak
251 pm akdt Sun aug 25 2019

Short term through Tuesday night the upper shortwave trof
that brought in the tstms will move E of the area early this
evening. Some upper level ridging will move in tonight, but will
quickly be pushed E by next energetic shortwaves that will move
across the gulf and NE pac through mon. These shortwaves will
merge over the eastern gulf by Mon night, then drift slowly
inland Tue and Tue night. At the sfc, a weak trof will drift n
through the gulf tonight, and will be absorbed by a northward
moving occluded front over the far N gulf mon. A low should
develop over the SW gulf tonight, and reach the central gulf mon,
while another low develops further SE and moves NE into the
eastern gulf by Mon evening. This low will then weaken and move se
along the outer coast Tue and Tue night. A stronger occluded front
will move NE into the eastern gulf mon, then move across SE ak mon
night, exiting the far SE part by daybreak tue. It now appears
that the atmospheric river associated with the more southern
shortwave will get into the southern panhandle for late mon
afternoon and night. After looking over the models, the 12z
canadian seemed to be the best compromise with the systems, but
the differences between the models were not that large overall.

For tonight, the showers will initially diminish as weak ridging
moves in, but increase again overnight as low level convergence
increases ahead of the trof moving in. Still might be a TSTM or
two over the far eastern inner channels early this evening as
well. Rain ahead of the complex system moving into the gulf will
likely reach the outer coast toward daybreak.

For mon-mon night, rain will spread inland Mon morning and early
afternoon. The heaviest rain initially will be along the N half of
the panhandle as deformation and frontogenesis intensify the rain
band during the afternoon. By late afternoon though, with the
atmospheric river reaching the southern area, heavy rain will
begin there as well. Think the far S could get rain rates as high
as 1 2 inch per hour from 00z-06z, especially along S and w
facing terrain. After fropa, precip should transition to showers
along the central outer coast early in the evening, then this
transition to showers will spread inland across the central and n
areas and southern outer coast later in the night. Winds will be
increasing ahead of the low and fronts moving in, and some gale
force winds will be likely over the eastern gulf and southern
inner channels. May also be some strong winds in areas that favor
easterly winds across the n-central area, especially in the
afternoon and early evening.

For Tue into Tue night, the low over the NE gulf will slide se
along the outer coast. There will likely be a small second wrap
frontal band with it that affects the central coast with heavier
showers and a burst of wind. Some of the showers will also get
inland across the central and southern areas. The showers and
winds will slowly diminish from the NW Tue afternoon and night as
the low weakens and moves off to the se.

Long term Wednesday through Sunday night ... Weak upper
level ridging should be building in Wednesday. This should
make all of southeast alaska dry, if not sunny during the day.

The dry weather should reliably last through Thursday night. By
Friday morning, wpc and the national blend are trying to build in
precipitation from the west. ECMWF is pushing a front over the
northern panhandle from the southwest at that time, and the GFS is
totally dry. As a result, confidence in a dry weekend is below
average.

Models are still trying to bring down daytime highs for the second
half of this week. We are now looking at highs in the second half
of the week in the mid to upper 60s. Not the 70s we were
originally expecting, but still solidly above normal for this time
of the year.

Ajk watches warnings advisories
Public... None.

Marine... Gale warning for pkz022-036-041>043-051-052.

Small craft advisory for pkz021-031>035.

Rwt fritsch
visit us at http:

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LCNA2 - Lincoln Rock, AK 42 mi76 min SE 16 G 22 57°F 1022 hPa54°F
FFIA2 - Five Finger, AK 58 mi86 min NNW 2.9 G 2.9 54°F 1023.2 hPa (+0.4)
CDEA2 - Cape Decision, AK 77 mi64 min E 6 G 8 53°F 53°F

Wind History for Port Alexander, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Petersburg, AK13 mi2.5 hrsN 010.00 miFair52°F50°F93%1024.8 hPa

Link to 5 minute data for PAPG

Wind History from APG (wind in knots)
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Last 24hr--SE3--CalmS3--W3Calm--Calm--E4--E3CalmE3E6NE5N4Calm------Calm
1 day ago--3E6NE7NE5CalmCalmCalmCalmCalmCalmE3CalmE4E5Calm54------Calm----
2 days ago----364--N9Calm366
G15
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--SE7SE9SE4W3W4--Calm----N6

Tide / Current Tables for Anchor Point, Alaska
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Anchor Point
Click for Map
Mon -- 12:29 AM AKDT     Moonrise
Mon -- 05:42 AM AKDT     Sunrise
Mon -- 06:10 AM AKDT     2.40 feet Low Tide
Mon -- 12:59 PM AKDT     14.62 feet High Tide
Mon -- 06:18 PM AKDT     Moonset
Mon -- 06:18 PM AKDT     6.41 feet Low Tide
Mon -- 08:03 PM AKDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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15.513.911.58.75.83.42.42.84.46.89.612.21414.61412.3107.76.56.88.310.613.215.6

Tide / Current Tables for Wrangell Narrows (off Petersburg), Alaska Current
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Wrangell Narrows (off Petersburg)
Click for Map
Mon -- 12:28 AM AKDT     Moonrise
Mon -- 01:36 AM AKDT     -3.03 knots Max Ebb
Mon -- 04:48 AM AKDT     0.00 knots Slack
Mon -- 05:42 AM AKDT     Sunrise
Mon -- 08:15 AM AKDT     2.82 knots Max Flood
Mon -- 11:11 AM AKDT     -0.00 knots Slack
Mon -- 02:21 PM AKDT     -2.06 knots Max Ebb
Mon -- 04:54 PM AKDT     0.00 knots Slack
Mon -- 06:19 PM AKDT     Moonset
Mon -- 08:03 PM AKDT     Sunset
Mon -- 08:20 PM AKDT     2.75 knots Max Flood
Mon -- 11:02 PM AKDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-2.5-3-3-2.6-1.40.41.82.52.82.61.60.2-0.9-1.7-2-2-1.30.21.62.42.72.61.70.1

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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Wind Forecast for (5,6,7,8)
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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.