Alert archive / Alaska / Small Craft Advisories in 2021

Small Craft Advisory 493, NWS Juneau, AK

October 22, 2021

NWS Juneau, AK issued this small craft advisory at Oct 22, 2021, 3:31 PM AKDT. It was in force for 48 hr.

The area

The counties it named.

The facts

Issued
Oct 22, 2021, 3:31 PM AKDT (23:31 UTC)
Expired
Oct 24, 2021, 3:41 PM AKDT
In force
48 hr
Issued by
NWS Juneau, AK

The text

As transmitted.

651 
FZAK53 PAJK 222331
CWFYAK

Marine Forecast for Yakutat Bay
National Weather Service Juneau AK
331 PM AKDT Fri Oct 22 2021

Coastal Waters Forecast for Yakutat Bay

Wind forecasts reflect the predominant speed and direction
expected. Sea forecasts represent the average of the highest
one-third of the combined windwave and swell height.

PKZ053-231745-
Yakutat Bay-
331 PM AKDT Fri Oct 22 2021

...SMALL CRAFT ADVISORY THROUGH SATURDAY...

.TONIGHT...E wind 20 kt. Gusts to 35 kt in the evening. Seas
10 ft building to 16 ft in the evening, then subsiding to 11 ft
late. Rain in the evening. 
.SAT...E wind 20 kt. Gusts to 35 kt. Seas 15 ft. S swell.
Showers and isolated thunderstorms in the afternoon. 
.SAT NIGHT...E wind 15 kt. Seas 12 ft. S swell. Rain showers
in the evening. 
.SUN...NE wind 15 kt. Seas 9 ft. S swell. 
.SUN NIGHT...NE wind 15 kt. Seas 7 ft. S swell. 
.MON...E wind 10 kt. Seas 6 ft. 
.TUE...E wind 10 kt. Seas 6 ft. 
.WED...Light winds becoming S 10 kt. Seas 5 ft. 

$$
4 follow-up statements
810 
FZAK53 PAJK 231205
CWFYAK

Marine Forecast for Yakutat Bay
National Weather Service Juneau AK
405 AM AKDT Sat Oct 23 2021

Coastal Waters Forecast for Yakutat Bay

Wind forecasts reflect the predominant speed and direction
expected. Sea forecasts represent the average of the highest
one-third of the combined windwave and swell height.

PKZ053-240615-
Yakutat Bay-
405 AM AKDT Sat Oct 23 2021

...SMALL CRAFT ADVISORY EARLY...

.TODAY...E wind 20 kt. Gusts to 35 kt in the afternoon. Seas
10 ft subsiding to 4 ft. S swell becoming SW. Showers and 
isolated thunderstorms in the afternoon. 
.TONIGHT...NE wind 10 kt. Seas 3 ft. SW swell. Rain showers and
slight chance of thunderstorms in the evening. 
.SUN...NE wind 10 kt in the morning becoming light. Seas 3 ft
in the morning then 2 ft or less. SW swell. 
.SUN NIGHT...NE wind 15 kt. Seas 6 ft. SW swell. 
.MON...Light winds becoming NE 10 kt. Seas 6 ft. 
.TUE...E wind 10 kt. Seas 6 ft. 
.WED...Light winds becoming SE 10 kt. Seas 6 ft. 

$$
494 
FZAK53 PAJK 232331
CWFYAK

Marine Forecast for Yakutat Bay
National Weather Service Juneau AK
331 PM AKDT Sat Oct 23 2021

Coastal Waters Forecast for Yakutat Bay

Wind forecasts reflect the predominant speed and direction
expected. Sea forecasts represent the average of the highest
one-third of the combined windwave and swell height.

PKZ053-241745-
Yakutat Bay-
331 PM AKDT Sat Oct 23 2021

...SMALL CRAFT ADVISORY THROUGH SUNDAY...

.TONIGHT...E wind 15 kt. Seas 12 ft. S swell early in the
evening. Rain showers and slight chance of thunderstorms in the 
evening. 
.SUN...NE wind 10 kt. Seas 8 ft. S swell in the morning. 
.SUN NIGHT...N wind 10 kt in the evening becoming light. Seas
7 ft. S swell in the evening. 
.MON...Light winds. Seas 6 ft. 
.MON NIGHT...NE wind 10 kt. Seas 6 ft. S swell. 
.TUE...E wind 10 kt. Seas 6 ft. 
.WED...Light winds becoming SE 10 kt. Seas 6 ft. 
.THU...E wind 10 kt. Seas 6 ft. 

$$
059 
FZAK53 PAJK 241155
CWFYAK

Marine Forecast for Yakutat Bay
National Weather Service Juneau AK
355 AM AKDT Sun Oct 24 2021

Coastal Waters Forecast for Yakutat Bay

Wind forecasts reflect the predominant speed and direction
expected. Sea forecasts represent the average of the highest
one-third of the combined windwave and swell height.

PKZ053-250600-
Yakutat Bay-
355 AM AKDT Sun Oct 24 2021

...SMALL CRAFT ADVISORY THROUGH THIS MORNING...

.TODAY...N wind 10 kt. Seas 9 ft subsiding. 
.TONIGHT...N wind 10 kt. Seas 7 ft. S swell in the evening. 
.MON...Light winds. Seas 5 ft. 
.MON NIGHT...E wind 10 kt. Seas 5 ft. 
.TUE...E wind 10 kt. Seas 6 ft. 
.WED...Light winds becoming SW 10 kt. Seas 7 ft. 
.THU...SW wind 10 kt becoming SE. Seas 7 ft. 

$$
139 
FZAK53 PAJK 242341
CWFYAK

Marine Forecast for Yakutat Bay
National Weather Service Juneau AK
341 PM AKDT Sun Oct 24 2021

Coastal Waters Forecast for Yakutat Bay

Wind forecasts reflect the predominant speed and direction
expected. Sea forecasts represent the average of the highest
one-third of the combined windwave and swell height.

PKZ053-251745-
Yakutat Bay-
341 PM AKDT Sun Oct 24 2021

.TONIGHT...Light winds becoming NE 10 kt in the evening, then
becoming light late. Seas 7 ft. S swell in the evening. 
.MON...Light winds. Seas 6 ft. 
.MON NIGHT...Light winds becoming E 10 kt late. Seas 5 ft. 
.TUE...E wind 10 kt. Seas 5 ft. S swell. 
.TUE NIGHT...E wind 10 kt. Seas 7 ft. S swell. 
.WED...Light winds becoming SW 10 kt. Seas 7 ft. 
.THU...SW wind 10 kt becoming SE. Seas 7 ft. 
.FRI...SE wind 15 kt. Seas 6 ft. 

$$

What forecasters said that day

The local office's own words before this small craft advisory went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Juneau, AK wrote its last area forecast discussion before this small craft advisory went out at Oct 22, 2:47 PM AKDT, 44 minutes earlier.

Area forecast discussion, Oct 22, 2:47 PM AKDT, 44 minutes before
Southeast Alaska Forecast Discussion
National Weather Service Juneau AK
247 PM AKDT Fri Oct 22 2021

.SHORT TERM... / Through Sunday / Windy conditions remain across
the panhandle overnight as the first low-pressure system is
replaced by a second as it moves NW along the panhandle. This
second low pressure is on track to remain further away from the
panhandle than the previous, resulting in breezy conditions, but
not as strong as we saw today. Once this low pressure moves out of
the forecast region, high pressure will build.

Frequent gusts of 40 mph + are occurring at E/W inner channels
including scull island, naked island, and five finger. Strong
winds overland are possible over the next 24 hours, but mainly
Friday night, with gusts up to 50 mph. The pressure gradient
shifts to favor strong winds from the north on Sunday, resulting
in small crafts along the N/S inner channels.

Quick bands of moderate precipitation are anticipated as the
second low pressure moves along the panhandle overnight tonight.
There is some potential for thunder Saturday, but confidence is
below average. The region dries out Sunday as the onshore flow
shifts to offshore. Clearing skies Sunday will lead to a more
diurnal curve in the temperatures, bringing low temperatures to
near or below freezing. Chances of fog also increase during this
time.

.LONG TERM.../ Sunday through Friday as of 10 pm Thursday /
An upper-level trough at 500 Mb continues to dig southeast
resulting in the closed low southwest of Vancouver Island by
Sunday afternoon a broad trough over the gulf into Tuesday.
Another trough moving to the western portion of the broad Gulf-
wide trough starting Tuesday will sharpen the through by pushing
up a ridge near the panhandle and then moving across the panhandle
area Wednesday. The mid to long-range solutions are a little
confused with timing and positioning which lowers the overall
confidence. The general idea remains that a trough moves into the
panhandle and the wet pattern will return after a minor break in
the weather.

The upper-level low undercuts the panhandle to the Southern
British Columbia coast Sunday and will cause east to northeast
flow over the panhandle to form. This track and positioning will
cause dry conditions Sunday for Southeast Alaska that will persist
through Monday afternoon and possibly into Tuesday. PoPs in the
chance categories will start to spread in from the southwest by
Tuesday.

A break in cloud cover is possible Sunday to Monday night,
allowing the radiational cooling overnight to be not limited,
leading to cooler overnight lows. Lows into the 20s to lower 30s
for the northern third of the panhandle can be anticipated.

&&

.AJK WATCHES/WARNINGS/ADVISORIES...
PUBLIC...Strong Wind from 1 AM AKDT Saturday through late tonight for
     AKZ024-026-027.
     Strong Wind until 4 PM AKDT this afternoon for AKZ021-022-024-
     025-027-028.
     Strong Wind until 7 PM AKDT this evening for AKZ023.
     Strong Wind from 10 PM AKDT this evening through late tonight
     for AKZ023.
     Strong Wind from 6 PM to 7 PM AKDT this evening for AKZ019.
MARINE...Gale Warning for PKZ012-022-033-036-041>043-051-052-310.
     Small Craft Advisory for PKZ011-013-021-031-032-034-035-053.

&&

KRT/Bezenek

Visit us at http://www.weather.gov/Juneau

The office that day

Everything else NWS Juneau, AK issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Oct 22, 4:22 AM AKDTGale WarningAJK48 hr
Oct 22, 4:22 AM AKDTStorm WarningAJK11 hr
Oct 22, 4:24 AM AKDTGale WarningAJK11 hr
Oct 22, 6:12 AM AKDTDense Fog AdvisoryAJK118 min
Oct 22, 3:31 PM AKDTGale WarningAJK24 hr
Oct 22, 3:32 PM AKDTGale WarningAJK24 hr
Oct 22, 3:32 PM AKDTSmall Craft AdvisoryAJK48 hr

Nearby

Small Craft Advisories in Alaska, 2021Every small craft advisory in 2021

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.