Wednesday, July8, 2020
Privacy Policy
L-36.com


Marine Weather and Tides
Chignik, AK

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
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.

Sunrise 4:34AMSunset 11:35PM Tuesday July 7, 2020 10:58 PM AKDT (06:58 UTC) Moonrise 11:14PMMoonset 6:40AM Illumination 92% 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
    EDIT      (on/off)   Help


7 Day Forecast for Marine Location Near Chignik, AK
   Hourly   EDIT   Help
location: 56.23, -158.35     debug


Area Discussion for -
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
FXAK68 PAFC 080009 AFDAFC

Southcentral and Southwest Alaska Forecast Discussion National Weather Service Anchorage AK 409 PM AKDT Tue Jul 7 2020

ANALYSIS AND UPPER LEVELS.

An upper-level spinning over the central Yukon Territory is continuing to slowly drift southward this afternoon. Instability associated with this system has already triggered a few isolated thunderstorms along the Alaska Range and Talkeetna Mountains. These storms are firing up along a weak boundary stretching along the Alaska Highway.

Farther west, an upper-level ridge is building south of the AKPEN, with the northern periphery pushing over Bristol Bay. Subsidence along the lee (east) side of the Kilbuck and Kuskokwim Mountains has helped scour out the residual marine layer; however, for areas closer to the coast the low stratus and drizzle are hanging tough. Farther north over the Kuskokwim Delta, an approaching trough is reinforcing the low cloud cover and drizzle currently in place.

Between these two features, a weak upper-level wave is tracking south over the Kenai Peninsula. This feature, along with a persistent southwesterly low-level flow, is keeping some low stratus in place from Palmer and Wasilla south to Homer. The stratus deck, however, is beginning to lift and break apart this afternoon from north to south as this feature exits the region.

Farther west across the Aleutians, subsidence from the persistent upper-level ridge is keeping low stratus and fog draped across the Chain and the southern Bering.

MODEL DISCUSSION.

Models continue to perform rather well for what is shaping up to be the development of a rather complex pattern across the state. Guidance continues to track the upper-level low over the Yukon south through Wednesday, but then diverge as to how quickly it exits into the Gulf and get absorbed by a second low tracking from Kodiak Island into the central Gulf. The NAM and Canadian are a bit faster with this evolution, the GFS slower, and the ECMWF pushing the first low back over Canada rather than phasing the two together. Nonetheless, the track of the Yukon low will keep the threat of thunderstorms over the Copper River Basin continuing into Wednesday as the rest of Southcentral falls under the influence of a more stable airmass with stratiform rain.

Models are also in good agreement with the movement of an upper- level wave across Southwest tonight, transitioning into stronger, more compact upper-level low tomorrow as it moves to the Kenai Peninsula. Guidance is also in good agreement regarding the strength and track of the resultant surface low as it develops off the eastern Kenai Peninsula coast and moves into the northern Gulf tomorrow evening. Given the good model agreement, forecast confidence is above average moving into the second half of the week.

AVIATION. PANC . The low stratus deck this morning will give way to VFR ceilings into the late evening to overnight hours. MVFR ceilings are expected to return to the terminal by early morning Wednesday as a storm system approaches. MVFR ceilings and visibility will then continue into Wednesday afternoon. Guidance continues to suggest a period of IFR ceilings around mid-morning Wednesday. However, confidence is low so it is currently not included in the TAF package.

SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 through 3).

Lightning strikes were detected today between Tok and Glenn Allen. Isolated convection will be possible this evening. A wet pattern is on tap for this forecast period. Using a blend of the GFS and NAM the rainfall amounts were significantly increased for Southcentral. The longwave trough is directly over Southcentral and the Gulf Of Alaska. This high amplitude trough actually extends north of the Brooks Range, into the Yukon Territory and Northwest Territories. There are a number of embedded shortwaves that will impact the region. Portions of the Anchorage Bowl, Kenai Peninsula and Prince William Sound will receive between .50 to over 1 inch of rain from Wednesday to Thursday morning. Friday another slug of energy will descend over the Parks Highway and this will be the impetus for the next round of precipitation on Friday.

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 through 3:Tonight through Friday) .

The forecast remains on track, as the numerical models continue to advertise a mid-level low with several associated vort lobes crossing the region. As this occurs, a predominately northwest flow develops tonight and continues through Friday. This allows added low-level moisture to move inland from the marine layer of the Bering. Meanwhile, increased forcing aloft from the assortment of disturbances moving overhead and increased mid and upper-level moisture will foster widespread rainfall developing overnight while continuing on Wednesday, with this then transitioning to a showery type pattern for at least the first half of Thursday. Thereafter, drier air moves into Southwest Alaska from the north, leading to decreased cloud cover, drying conditions, and warming temperatures.

.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 through 3:Tonight through Friday) .

The tale of two sides best sums up the Bering Sea/Aleutian forecast. A shortwave ridge of high pressure at the surface and aloft will develop overnight across the central Bering and eastern Aleutians, peaking in strength and amplitude for Thursday into Friday. To it's east, a cooler northwesterly flow will develop across the eastern Bering and Alaska Peninsula (AKPEN), with a few showers possible through late Wednesday night. After that, drying and warming conditions will commence.

Further west, on the backside of the ridge, a series of fronts will lift up from the west Pacific, reaching the Aleutian chain before encountering the Bering ridge that has a slight negative tilt. This causes the front to stall as Frontolysis (the decaying of a front), only to be replaced by the next front 24 hours later. Widespread precipitation with sustain small craft criteria winds will accompany each feature. Otherwise, look for patchy fog to affect all of the Bering Sea and coastal waters through the period.

MARINE (Days 3 through 5: Friday through Sunday).

An area of low pressure will continue over the southern Gulf, which will weaken Friday evening and allow for ridging to build in by Saturday morning. Over the northern Gulf and coasts, a trough of low pressure moves in for the weekend. Winds will remain below small craft advisory level through Sunday.

Over the western domain, a front associated with a North Pacific low will move over the western and central Aleutians on Friday afternoon. There is higher confidence today that small craft advisory level winds will accompany this system, but less confidence in the potential for gale force gusts embedded with this system. By Sunday, this system should weaken as high pressure tries to build in over the Bering.

LONG TERM FORECAST (Days 3 through 7: Saturday through Tuesday).

A cloudy and showery pattern is expected across mainland Alaska this weekend as cyclonic flow around a long-wave trough moves into the region. This will be an active pattern as shortwaves continue to move across the interior, before ridging starts to build over the Gulf by the start of next week. Timing of these ways is still a forecast challenge, but it's safe to say you will should keep an umbrella handy with a chance of showers in the forecast through Tuesday. Average temperatures for this time of year are expected under this cyclonic flow pattern as there is no significant ridging setting up.

AFC WATCHES/WARNINGS/ADVISORIES. PUBLIC . NONE. MARINE . NONE. FIRE WEATHER . NONE.



SYNOPSIS AND MODEL DISCUSSION . TM SOUTHCENTRAL ALASKA . PS SOUTHWEST ALASKA/BERING SEA/ALEUTIANS . PD MARINE/LONG TERM . AH


Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports. Follow links for more data.
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Chignik, Chignik Airport, AK6 mi2 hrsW 11 G 169.00 miFair56°F43°F62%1024.8 hPa

Link to 5 minute data for PAJC

Wind History from AJC (wind in knots)
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
Last 24hr--W14
G29
SW17
G30
SW20
G29
SW19
G24
W16
G24
SW18
G24
W14
G24
--W15
G27
W19
G33
SW15
G27
W17
G29
W14
G29
W15
G23
SW20
G25
W21
G30
W12W16
G23
W15
G22
W14
G20
W12
G17
W11
G16
W10
1 day ago--------------------W17
G24
W15
G26
--W17
G25
W16
G30
W18
G23
W18
G28
W16
G26
W19
G26
--SW22
G32
W22
G34
SW16
G28
W14
G28
2 days ago----------------------------W4------------------

Tide / Current Tables for Chignik, Anchorage Bay, Alaska
   EDIT   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Chignik
Click for Map
Wed -- 01:14 AM AKDT     Moonrise
Wed -- 04:54 AM AKDT     9.50 feet High Tide
Wed -- 05:58 AM AKDT     Sunrise
Wed -- 09:58 AM AKDT     Moonset
Wed -- 11:50 AM AKDT     -1.37 feet Low Tide
Wed -- 06:16 PM AKDT     7.45 feet High Tide
Wed -- 11:18 PM AKDT     Sunset
Wed -- 11:46 PM AKDT     3.08 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
3.44.56.17.89.19.58.97.45.22.70.4-1-1.4-0.613.15.26.77.47.36.55.44.13.3

Tide / Current Tables for Chankliut Island, Alaska
   EDIT      (on/off)   Help   One Week of Data
Chankliut Island
Click for Map
Wed -- 01:12 AM AKDT     Moonrise
Wed -- 04:55 AM AKDT     9.04 feet High Tide
Wed -- 05:57 AM AKDT     Sunrise
Wed -- 09:57 AM AKDT     Moonset
Wed -- 11:51 AM AKDT     -1.35 feet Low Tide
Wed -- 06:17 PM AKDT     7.10 feet High Tide
Wed -- 11:16 PM AKDT     Sunset
Wed -- 11:47 PM AKDT     3.03 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
9
am
10
am
11
am
12
pm
1
pm
2
pm
3
pm
4
pm
5
pm
6
pm
7
pm
8
pm
9
pm
10
pm
11
pm
3.34.35.97.58.798.57.152.60.4-1-1.3-0.70.82.94.96.47.16.96.35.243.2

Weather Map
       (on/off)   Help Weather Map
wmap_P
GEOS Local Image of Alaska    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
Ground Weather Radar Station King Salmon
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

Cookie Policy:
This website uses cookies to save your settings. No personal information is saved. I do not collect statistics on your visit. You can disable cookies in your browser if you like but it is not recommended for this site. I do not sell cookies. Go to a bakery for that. In fact I do not sell anything. To disable cookies from L-36.com, please refer to the Help button in your browser.
Privacy Policy:
I do not sell or share any user data or anything else for that matter. The only personal information I save is in the site log which has a line for each page view which includes the IP address your browser sends in the header as well as which page you requested. I use this to block hackers and other bad actors. I do not use this raw data to create profiles on users. I periodically delete the log files. If you are subject to CCPA, Google ads on this site will not be based on your past behavior so you will likely not see an ad for a lawn mower just because you looked for one at a big box website. I do not believe this site is subject to CCPA but I am doing what I can to follow the guidelines anyway.
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 numerous 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.