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Marine Weather and Tides
Whittier, AK

Version 3.4
NOTICE
3/30/2021 -- ANZ330 has been split into ANZ331 and ANZ332. Click EDIT in Marine Forecast and select your new zone.
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 4:44AMSunset 11:08PM Wednesday May 25, 2022 8:28 PM AKDT (04:28 UTC) Moonrise 3:19AMMoonset 3:56PM Illumination 20% 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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PKZ129 Passage Canal- 316 Pm Akdt Wed May 25 2022
Tonight..W wind 10 kt. Gusts to 20 kt near whittier. Seas 2 ft.
Thu..W wind 10 kt. Gusts to 20 kt near whittier. Seas 2 ft.
Thu night..W wind 10 kt increasing to 20 kt after midnight. Gusts 20 kt near whittier increasing to 30 kt after midnight. Seas 2 ft.
Fri..W wind 20 kt. Seas 2 ft.
Fri night through Mon..Variable wind less than 10 kt. Seas 2 ft.


7 Day Forecast for Marine Location Near Whittier, AK
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location: 60.63, -148.17     debug


Area Discussion for -
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FXAK68 PAFC 260048 AFDAFC

Southcentral and Southwest Alaska Forecast Discussion National Weather Service Anchorage AK 448 PM AKDT Wed May 25 2022

ANALYSIS AND UPPER LEVELS.

The pattern for the remainder of the week is beginning to take shape. Water vapor satellite shows ridging becoming established over the central Bering Sea. Northerly flow streaming around the east side of the ridge is pushing the previous weak trough further offshore away from Southcentral Alaska. As the ridge builds in, clearing of most lower level clouds has happened, with only high cirrus streaming overhead. The marine layer stratus made it's first widespread appearance of the year, developing across most of Cook Inlet this morning, however daytime heating is mixing it out quickly. Over the Bering Sea however, the marine layer is very established, and building toward the mainland as high pressure strengthens.

MODEL DISCUSSION.

Guidance is in great agreement on the evolution of the upper level ridge through Saturday. Some difference begin to arise as a disturbance in the northern Pacific begins to amplify the flow on Sunday/Monday. However, guidance is in good agreement of a strengthening low pressure system approaching the southwestern Gulf of Alaska. Confidence is higher than normal.

AVIATION.

PANC . VFR conditions and light winds will persist. However, marine layer stratus is expected to develop in Cook Inlet overnight and will approach close to the terminal by the morning hours.

FIRE WEATHER.

A fire weather watch has been issued for Friday/Saturday for multiple areas around Southcentral, and additionally the Greater Bristol Bay area. The building ridge over the Bering Sea/Southwest mainland continues to be a concern bringing in the warmest temperatures of the season, coincident with a drying air mass. Winds will be close to meeting criteria. Given the confidence in the hot and dry portion, and the increase in holiday weekend recreation an early watch seems prudent.

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

An upper-level ridge will build eastward over mainland Alaska through the end of the week. Weak upper-level shortwaves propagating through the flow from north to south along the periphery of the ridge will bring a slight chance of showers each afternoon and evening, mainly for the higher elevations surrounding the Copper River Basin.

With the ridge strengthening over the region, expect a general warming and drying trend through the remainder of the week and into the start of the Memorial Day weekend. Temperatures will push to around 70 degrees on Thursday for most inland locations, with temperatures rising to the mid-to-upper 70s for parts of the Kenai Peninsula, Mat-Su Valleys, Anchorage Bowl, and Copper River Basin by Friday and Saturday.

A weak upper-level trough is expected dive southward across Southcentral on Friday and make for potential fire weather concerns. This feature looks to bring in the potential for an increase in winds Friday afternoon and evening, with warmer temperatures allowing for stronger flow aloft to mix 15 to 20 mph gusts to the surface during the afternoon and evening hours. The combination of forecast temperatures in the 70s, gusty winds, and a drier airmass could drive relative humidity values down to 20% or lower from the Susitna Valley south to the Kenai Peninsula. Typical diurnal sea breeze patterns are also expected to be overcome by northerly flow dominant throughout the atmospheric column on Friday, which will limit moisture even near the coast. As a result, this potential for hot, dry, and windy conditions going into the holiday weekend has prompted a Fire Weather Watch Friday morning through Saturday evening.

.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 through 3: This morning through Friday night) .

A ridge of high pressure is gradually building back into Southwest from the northern Bering this morning. The ridge will help to keep surface winds relatively light and variable, with a warming trend expected through the weekend. Morning satellite reveals areas of stratus moving through the Lower Kuskokwim Valley into the Kuskokwim Delta with fog observed in Bethel, and a second area of stratus inland of the Bristol Bay coast. Much of this activity should begin to clear with the onset of daytime heating, resulting in a favorable day for outdoor activities. By Friday, hot and dry conditions will become more prevalent across the Lower Kuskokwim Valley with high temperatures approaching 75 degrees Fahrenheit. The next passing shortwave disturbance around the ridge will also bring increasing winds to the region with potential gusts approaching 25 mph. Thus, conditions will need to be monitored closely in the event that fire weather thresholds are met.

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

Marine stratus and areas of fog blankets the Bering this morning while a broad ridge of high pressure sits centered just west of the Pribilofs. The ridge will be slow to budge over the next couple of days with benign sea conditions forecast. By Friday, however, a front will begin to approach the Western and Central Aleutians from the south with small craft easterly winds developing. Similarly, the next shortwave trough will move southward across Southwest on Friday with northerly small craft winds forecast to develop over Bristol Bay into the Alaska Peninsula.

MARINE (Days 3 through 5: Saturday through Monday).

Gulf of Alaska - A weak trough collapses over the North Gulf Coast, as high pressure moves across the the Gulf through Monday. Forecast confidence is good. Moderate Westerly winds extend from the Alaska Peninsula into the Central Gulf, and East of Kodiak Island, diminishing late Sunday. Seas less than 10 feet.

Aleutians / Bering - The Bering high slides into Western Alaska through Monday. A Kamchatka low and front sweep over the Western Aleutians through Monday. Forecast confidence is fair due to the speeds of movement of the low and front. Gusty Northerly winds over the Eastern Bering and Bristol Bay, diminishing Sunday. Moderate Easterly winds extend across the Southern Bering through Monday. Seas less than 10 feet.

.LONG TERM FORECAST (Days 4 through 7: Sunday through Wednesday) .

A weakening Kamchatka low and front moves over the Western Aleutians and dissipates in the North Pacific for Tuesday. The main map feature is the broad ridge covering most of the Bering and extending into Interior Alaska through Wednesday. Compared to earlier model runs, the EC and GFS extend a moderated ridge more North than East, stopping short of the Yukon border. The Canadian model holds its strength further West. Forecast confidence decreases with a slight chance of showers associated with a thermal low in the Eastern Interior. A well developed North Pacific low moves into the Western Gulf for Tuesday, changing in the overall pattern, and spreading moderate winds and increasing clouds and rain across Southcentral Alaska through midweek. To the West, a well developed North Pacific low complex pushes toward the Aleutians through Wednesday, bring windy conditions with low clouds and rain spreading into the Bering.

AFC WATCHES/WARNINGS/ADVISORIES. PUBLIC . Flood Advisory: 141. MARINE . NONE. FIRE WEATHER . Fire Weather Watch: 101 111 121 145 162.



SYNOPSIS AND MODEL DISCUSSION . ML SOUTHCENTRAL ALASKA . CQ SOUTHWEST ALASKA/BERING SEA/ALEUTIANS . RC MARINE/LONG TERM . KZ/ED


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46081 - Western Prince William Sound 13 mi39 min NNE 1.9G1.9 56°F 1012.2 hPa (-0.6)44°F
BLIA2 - Bligh Reef Light, AK 70 mi29 min SSW 7G8 51°F 1013.4 hPa (+0.0)
SWLA2 - 9455090- Seward, AK 75 mi59 min 48°F1012.9 hPa

Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Portage, Portage Glacier, AK37 mi36 minE 410.00 miFair54°F36°F51%1012.7 hPa

Link to 5 minute data for PATO

Wind History from ATO (wind in knots)
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Last 24 hrE75SE3000W4W6W7W74W6W6W65W6--665W743E4
1 day ago5E4E4E4E6SE434--0E3SE4E534E8E7E7E56
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2 days ago46SE4E7E4E5E75E53SE5SE7SE8SE85SE656SE9
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Tide / Current Tables for Applegate Island, Alaska
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Applegate Island
Click for Map
Thu -- 04:18 AM AKDT     Moonrise
Thu -- 04:45 AM AKDT     Sunrise
Thu -- 05:49 AM AKDT     0.97 feet Low Tide
Thu -- 11:49 AM AKDT     9.27 feet High Tide
Thu -- 05:41 PM AKDT     1.88 feet Low Tide
Thu -- 06:23 PM AKDT     Moonset
Thu -- 10:55 PM AKDT     Sunset
Thu -- 11:53 PM AKDT     11.85 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Applegate Island, Alaska, Tide feet
12
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11.1
1
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9.8
2
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7.7
3
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5.1
4
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2.8
5
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1.4
6
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1
7
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1.7
8
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3.4
9
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5.5
10
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7.6
11
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8.9
12
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9.3
1
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8.6
2
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7.2
3
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5.3
4
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3.4
5
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2.2
6
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1.9
7
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2.9
8
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4.9
9
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7.3
10
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9.7
11
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11.4


Tide / Current Tables for Culross Bay, Wells Passage, Alaska
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Culross Bay
Click for Map
Thu -- 04:18 AM AKDT     Moonrise
Thu -- 04:44 AM AKDT     Sunrise
Thu -- 05:42 AM AKDT     0.97 feet Low Tide
Thu -- 11:35 AM AKDT     9.47 feet High Tide
Thu -- 05:34 PM AKDT     1.88 feet Low Tide
Thu -- 06:23 PM AKDT     Moonset
Thu -- 10:56 PM AKDT     Sunset
Thu -- 11:39 PM AKDT     12.05 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

Culross Bay, Wells Passage, Alaska, Tide feet
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11.1
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9.6
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7.3
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4.8
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2.6
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1.3
6
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1
7
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1.9
8
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3.8
9
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6
10
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8.1
11
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9.3
12
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9.4
1
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8.6
2
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7.1
3
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5.1
4
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3.2
5
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2.1
6
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2
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3.2
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5.3
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7.9
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10.3
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11.8


Weather Map
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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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