Saturday, September21, 2019 L-36.com


Marine Weather and Tides
Petersburg, AK

Version 3.4
NOTICE
9/4/2019 Fixed the weather maps due to NOAA moving them.
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 6:38AMSunset 7:02PM Saturday September 21, 2019 8:02 AM AKDT (16:02 UTC) Moonrise 10:19PMMoonset 3:05PM Illumination 50% Phase: Third Quarter Moon; Moon at 22 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- 411 Am Akdt Sat Sep 21 2019
Today..SW wind 15 kt. Seas 4 ft. Showers.
Tonight..S wind 15 kt. Seas 3 ft.
Sun..E wind 15 kt. Seas building to 3 ft in the afternoon.
Sun night..SE wind 30 kt. Gusts to 45 kt. Seas 6 ft. Rain.
Mon..SE gale to 40 kt becoming S 25 kt. Seas 8 ft subsiding to 5 ft.
Tue..S wind 25 kt. Seas 5 ft.
Wed..S wind 15 kt becoming w. Seas 3 ft.


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 211343
afdajk
southeast alaska forecast discussion
national weather service juneau ak
543 am akdt Sat sep 21 2019

Short term Low pressure over the northern gulf is slowly
creeping it's way eastward toward the region which will continue
to prompt rain through the region Saturday. While the heaviest of
rainfall has ended, many locations can still anticipate at least
another tenth to quarter of an inch of rain with some getting as
much as an additional half inch. The heavy rain has prompted a few
responses on area creeks, streams and rivers, most notably with
the taiya near skagway currently being in moderate flood stage.

The expectation is that this river will crest Saturday morning and
drop below flood stage before the end of the day.

A front that has made its way through most of the region that
caused significant winds yesterday is still pushing through the
southern panhandle as of Saturday morning. Many locations saw
decreasing winds during the overnight hours with areas where the
front is still passing through holding on to these higher speeds.

Also of note is that a strong pressure gradient through lynn canal
is also channeling some stronger winds through there and into
skagway and haines. For the most part, these locations still being
impacted by wind should see the speeds drop off over the course
of the day.

While not completely dry, many should see a break in the rain for
Sunday before our next system begins it's charge toward the
region from the southwest. This system will begin bringing gale
force winds to the open water areas and potentially to zone 52 by
the end of the short term forecast period. Also likely is that the
first push of precip from this system will be moving in late
Sunday night early Monday morning.

Long term Monday through Saturday as of 10 pm Friday
models still casting about with system coming in for mon-tue
period. Does look fairly energetic initially, but with upper jet
dipping S of the area mon, think the front that will come onshore
will be weakening. Still, may have a low pressure wave or two to
deal with during that time frame. Decided against changing the
mon-wed time frame to allow for better model agreement on
placement of potential significant low pressure waves.

After that, models agree that ridging will build over the area,
and this should diminish precip threat. May have a shortwave or
two that might drop SE through the area, which could enhance winds
and bring clouds in. Could have a burst of stronger northerly
winds through the inner channels Thu Fri than current forecast is
showing. Later forecasts can adjust this as needed. Ended up using
wpc to handle Thu onward to show more low level northerly flow.

Ajk watches warnings advisories
Public... Areal flood advisory until 9 am akdt this morning for akz026.

Areal flood advisory until 7 am akdt this morning for akz018.

Areal flood warning until 1 pm akdt this afternoon for akz018.

Strong wind until 10 am akdt this morning for akz018.

Marine... Small craft advisory for pkz012-013-022-031>033-036-041>043-
051>053.

Jdr rwt
visit us at http:

Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LCNA2 - Lincoln Rock, AK 42 mi52 min SSE 7 G 9.9 55°F 998.8 hPa54°F
FFIA2 - Five Finger, AK 58 mi62 min S 11 G 15 56°F 998.1 hPa (+0.7)
CDEA2 - Cape Decision, AK 77 mi40 min S 7 G 13 55°F 53°F

Wind History for Port Alexander, AK
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Petersburg, AK13 mi66 minENE 510.00 miMostly Cloudy57°F55°F94%1000 hPa

Link to 5 minute data for PAPG

Wind History from APG (wind in knots)
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Last 24hrSE7SE6
G16
E5E7S7CalmCalm--43--CalmE7CalmW4--3----------CalmE4
1 day ago--E3CalmE5E3Calm--CalmNE3CalmCalmCalm--NE3--CalmSW3CalmCalmCalmCalmE845
2 days agoE3Calm--E3NE3CalmCalmE3CalmCalmCalmCalmCalmNW3CalmCalm----Calm--Calm----Calm

Tide / Current Tables for Anchor Point, Cook Inlet, Alaska
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Tide / Current Tables for Point Lockwood, Woewodski Island, Wrangell Narrows, Alaska
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map
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wmap_P
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for (12,3,4,5)
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Ground Weather Radar Station Biorka Is., AK
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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.