Alert archive / Alaska / Storm Warnings in 2018
Storm Warning 20, NWS Juneau, AK
NWS Juneau, AK issued this storm warning at Mar 21, 2018, 4:03 AM AKDT. It was in force for 48 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Mar 21, 2018, 4:03 AM AKDT (12:03 UTC)
- Expired
- Mar 23, 2018, 3:58 AM AKDT
- In force
- 48 hr
- Issued by
- NWS Juneau, AK
The text
As transmitted.
707 FZAK51 PAJK 211203 CWFAJK Coastal Waters Forecast FOR Southeast Alaska National Weather Service Juneau AK 403 AM AKDT Wed Mar 21 2018 Southeast Alaska Coastal Waters from Dixon Entrance to Cape Suckling out 100 nm 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. PKZ098-220230- 403 AM AKDT Wed Mar 21 2018 .SYNOPSIS FOR SOUTHEAST ALASKA INNER CHANNELS COASTAL WATERS... Low pressure in the SE gulf will track south and persist through Thu. Strong high pressure over Mainland Alaska will expand into NW Canada through Thu. $$ PKZ011-220230- Glacier Bay- 403 AM AKDT Wed Mar 21 2018 ...SMALL CRAFT ADVISORY THIS AFTERNOON THROUGH LATE TONIGHT... .TODAY...N wind increasing to 25 kt in the afternoon. Seas 5 ft. .TONIGHT...N wind 30 kt. Seas 6 ft. .THU...NW wind 30 kt. Gusts to 45 kt. Seas 6 ft. .THU NIGHT...N wind 25 kt. Gusts to 40 kt. Seas 5 ft. .FRI...NE wind 15 kt. Seas 3 ft. .SAT...NE wind 10 kt. Seas 2 ft or less. .SUN...NE wind 10 kt becoming SE. Seas 2 ft or less. $$ PKZ012-220230- Northern Lynn Canal- 403 AM AKDT Wed Mar 21 2018 ...STORM WARNING THIS EVENING THROUGH LATE TONIGHT... .TODAY...N wind 35 kt increasing to 45 kt in the afternoon. Seas 9 ft. .TONIGHT...N wind 50 kt. Gusts to 65 kt. Seas 11 ft. .THU...N storm force wind to 50 kt. Gusts to 65 kt. Seas 10 ft. .THU NIGHT...N storm force wind to 50 kt. Seas 10 ft. .FRI...N wind 30 kt diminishing to 15 kt. Seas 6 ft subsiding to 3 ft. .SAT...N wind 15 kt. Seas 3 ft. .SUN...N wind 10 kt becoming S. Seas 3 ft. $$ PKZ013-220230- Southern Lynn Canal- 403 AM AKDT Wed Mar 21 2018 ...STORM WARNING THIS EVENING THROUGH LATE TONIGHT... .TODAY...N wind increasing to 45 kt in the afternoon. Gusts to 60 kt. Seas 9 ft. .TONIGHT...N wind 50 kt. Gusts to 65 kt. Seas 10 ft. .THU...N storm force wind to 50 kt. Seas 10 ft. .THU NIGHT...N storm force wind to 50 kt. Seas 10 ft. .FRI...N wind 30 kt diminishing to 15 kt. Seas 6 ft subsiding to 3 ft. .SAT...N wind 15 kt. Seas 3 ft. .SUN...N wind 10 kt becoming S. Seas 3 ft. $$ PKZ021-220230- Icy Strait- 403 AM AKDT Wed Mar 21 2018 ...SMALL CRAFT ADVISORY THIS MORNING THROUGH TONIGHT... .TODAY...E wind increasing to 25 kt in the morning. Seas 5 ft. .TONIGHT...E wind 30 kt. Seas 6 ft. .THU...E wind 30 kt. Seas 6 ft. .THU NIGHT...E wind 30 kt. Seas 6 ft. .FRI...E wind 20 kt. Seas 4 ft. .SAT...E wind 10 kt. Seas 2 ft or less. .SUN...E wind 10 kt. Seas 2 ft or less. $$ PKZ022-220230- Cross Sound- 403 AM AKDT Wed Mar 21 2018 ...GALE WARNING TONIGHT... .TODAY...E wind 25 kt. Seas 8 ft. .TONIGHT...NE wind 35 kt. Seas 8 ft. .THU...E gale to 40 kt. Seas 8 ft. .THU NIGHT...E gale to 35 kt. Seas 7 ft. .FRI...E wind 15 kt. Seas 3 ft. .SAT...E wind 15 kt. Seas 3 ft. .SUN...E wind 15 kt. Seas 4 ft. $$ PKZ031-220230- Stephens Passage- 403 AM AKDT Wed Mar 21 2018 ...SMALL CRAFT ADVISORY THIS MORNING THROUGH TONIGHT... .TODAY...N wind increasing to 25 kt in the morning. Gusts to 40 kt. Seas 5 ft. .TONIGHT...N wind 30 kt. Gusts to 45 kt. North of Taku Inlet, E wind 40 kt becoming N late. Seas 6 ft. .THU...N gale to 40 kt. Seas 8 ft. .THU NIGHT...N wind 30 kt. Seas 6 ft. .FRI...NE wind 25 kt diminishing to 15 kt. Seas 4 ft. .SAT...NE wind 15 kt. Seas 3 ft. .SUN...SE wind 15 kt. Seas 3 ft. $$ PKZ032-220230- Northern Chatham Strait- 403 AM AKDT Wed Mar 21 2018 ...SMALL CRAFT ADVISORY TODAY THROUGH TONIGHT... .TODAY...NE wind 15 kt becoming N 25 kt in the afternoon. Seas 5 ft. .TONIGHT...N wind 25 kt. Seas 7 ft. .THU...N gale to 40 kt. Seas 8 ft. .THU NIGHT...N gale to 35 kt. Seas 7 ft. .FRI...N wind 25 kt diminishing to 15 kt. Seas 4 ft. .SAT...N wind 15 kt. Seas 3 ft. .SUN...SE wind 15 kt. Seas 3 ft. $$ PKZ033-220230- Southern Chatham Strait- 403 AM AKDT Wed Mar 21 2018 ...SMALL CRAFT ADVISORY LATE TONIGHT... .TODAY...Variable wind 10 kt becoming becoming N 20 kt in the afternoon. Seas 4 ft, except 7 ft near ocean entrances. .TONIGHT...N wind 25 kt. Gusts to 40 kt. Seas 5 ft. .THU...N wind 25 kt. Seas 5 ft. .THU NIGHT...N wind 20 kt. Seas 4 ft. .FRI...N wind 15 kt. Seas 3 ft. .SAT...N wind 10 kt. Seas 2 ft or less. .SUN...S wind 15 kt. Seas 3 ft. $$ PKZ034-220230- Frederick Sound- 403 AM AKDT Wed Mar 21 2018 .TODAY...E wind 10 kt becoming N 20 kt. Seas 4 ft. .TONIGHT...N wind 20 kt. Seas 4 ft. .THU...N wind 25 kt. Seas 5 ft. .THU NIGHT...N wind 20 kt. Seas 4 ft. .FRI...NE wind 20 kt. Seas 4 ft. .SAT...E wind 10 kt. Seas 3 ft. .SUN...SE wind 15 kt. Seas 3 ft. $$ PKZ035-220230- Sumner Strait- 403 AM AKDT Wed Mar 21 2018 .TODAY...E wind 10 kt becoming N. Seas 3 ft. .TONIGHT...N wind 15 kt. Seas 3 ft. Rain and snow showers late. .THU...NE wind 20 kt. Out of interior passes, gusts to 40 kt in the morning. Seas 4 ft. .THU NIGHT...E wind 15 kt. Seas 3 ft. .FRI...NE wind 15 kt. Seas 3 ft. .SAT...NE wind 10 kt. Seas 2 ft or less. .SUN...E wind 15 kt. Seas 3 ft. $$ PKZ036-220230- Clarence Strait- 403 AM AKDT Wed Mar 21 2018 .TODAY...N wind 15 kt. Seas 2 ft or less then 3 ft. .TONIGHT...N wind 15 kt. Seas 3 ft. .THU...N wind 20 kt becoming E in the afternoon. Seas 4 ft. .THU NIGHT...E wind 15 kt. Seas 3 ft. Rain showers. .FRI...N wind 10 kt becoming light. Seas building to 2 ft or less. .SAT...N wind 10 kt becoming light. Seas building to 2 ft or less. .SUN...SE wind 15 kt. Seas 3 ft. $$
5 follow-up statements
766 FZAK51 PAJK 212022 AAA CWFAJK Coastal Waters Forecast FOR Southeast Alaska...UPDATED National Weather Service Juneau AK 1222 PM AKDT Wed Mar 21 2018 Southeast Alaska Coastal Waters from Dixon Entrance to Cape Suckling out 100 nm 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. PKZ098-220245- 1222 PM AKDT Wed Mar 21 2018 .SYNOPSIS FOR SOUTHEAST ALASKA INNER CHANNELS COASTAL WATERS... Low pressure in the SE gulf will track south and persist through Thu. Strong high pressure over Mainland Alaska will expand into NW Canada through Thu. $$ PKZ011-220245- Glacier Bay- 1222 PM AKDT Wed Mar 21 2018 ...SMALL CRAFT ADVISORY THIS AFTERNOON THROUGH LATE TONIGHT... .TODAY...N wind increasing to 25 kt in the afternoon. Seas 5 ft. .TONIGHT...N wind 30 kt. Seas 6 ft. .THU...NW wind 30 kt. Gusts to 45 kt. Seas 6 ft. .THU NIGHT...N wind 25 kt. Gusts to 40 kt. Seas 5 ft. .FRI...NE wind 15 kt. Seas 3 ft. .SAT...NE wind 10 kt. Seas 2 ft or less. .SUN...NE wind 10 kt becoming SE. Seas 2 ft or less. $$ PKZ012-220245- Northern Lynn Canal- 1222 PM AKDT Wed Mar 21 2018 ...STORM WARNING THIS EVENING THROUGH LATE TONIGHT... .TODAY...N wind 35 kt increasing to 45 kt in the afternoon. Seas 9 ft. .TONIGHT...N wind 50 kt. Gusts to 65 kt. Seas 11 ft. .THU...N storm force wind to 50 kt. Gusts to 65 kt. Seas 10 ft. .THU NIGHT...N storm force wind to 50 kt. Seas 10 ft. .FRI...N wind 30 kt diminishing to 15 kt. Seas 6 ft subsiding to 3 ft. .SAT...N wind 15 kt. Seas 3 ft. .SUN...N wind 10 kt becoming S. Seas 3 ft. $$ PKZ013-220245- Southern Lynn Canal- 1222 PM AKDT Wed Mar 21 2018 UPDATED ...STORM WARNING THROUGH LATE TONIGHT... .REST OF TODAY...N wind 50 kt. Seas 10 ft. .TONIGHT...N wind 50 kt. Gusts to 65 kt. Seas 10 ft. .THU...N storm force wind to 50 kt. Seas 10 ft. .THU NIGHT...N storm force wind to 50 kt. Seas 10 ft. .FRI...N wind 30 kt diminishing to 15 kt. Seas 6 ft subsiding to 3 ft. .SAT...N wind 15 kt. Seas 3 ft. .SUN...N wind 10 kt becoming S. Seas 3 ft. $$ PKZ021-220245- Icy Strait- 1222 PM AKDT Wed Mar 21 2018 ...SMALL CRAFT ADVISORY THIS MORNING THROUGH TONIGHT... .TODAY...E wind increasing to 25 kt in the morning. Seas 5 ft. .TONIGHT...E wind 30 kt. Seas 6 ft. .THU...E wind 30 kt. Seas 6 ft. .THU NIGHT...E wind 30 kt. Seas 6 ft. .FRI...E wind 20 kt. Seas 4 ft. .SAT...E wind 10 kt. Seas 2 ft or less. .SUN...E wind 10 kt. Seas 2 ft or less. $$ PKZ022-220245- Cross Sound- 1222 PM AKDT Wed Mar 21 2018 ...GALE WARNING TONIGHT... .TODAY...E wind 25 kt. Seas 8 ft. .TONIGHT...NE wind 35 kt. Seas 8 ft. .THU...E gale to 40 kt. Seas 8 ft. .THU NIGHT...E gale to 35 kt. Seas 7 ft. .FRI...E wind 15 kt. Seas 3 ft. .SAT...E wind 15 kt. Seas 3 ft. .SUN...E wind 15 kt. Seas 4 ft. $$ PKZ031-220245- Stephens Passage- 1222 PM AKDT Wed Mar 21 2018 ...SMALL CRAFT ADVISORY THIS MORNING THROUGH TONIGHT... .TODAY...N wind increasing to 25 kt in the morning. Gusts to 40 kt. Seas 5 ft. .TONIGHT...N wind 30 kt. Gusts to 45 kt. North of Taku Inlet, E wind 40 kt becoming N late. Seas 6 ft. .THU...N gale to 40 kt. Seas 8 ft. .THU NIGHT...N wind 30 kt. Seas 6 ft. .FRI...NE wind 25 kt diminishing to 15 kt. Seas 4 ft. .SAT...NE wind 15 kt. Seas 3 ft. .SUN...SE wind 15 kt. Seas 3 ft. $$ PKZ032-220245- Northern Chatham Strait- 1222 PM AKDT Wed Mar 21 2018 ...SMALL CRAFT ADVISORY TODAY THROUGH TONIGHT... .TODAY...NE wind 15 kt becoming N 25 kt in the afternoon. Seas 5 ft. .TONIGHT...N wind 25 kt. Seas 7 ft. .THU...N gale to 40 kt. Seas 8 ft. .THU NIGHT...N gale to 35 kt. Seas 7 ft. .FRI...N wind 25 kt diminishing to 15 kt. Seas 4 ft. .SAT...N wind 15 kt. Seas 3 ft. .SUN...SE wind 15 kt. Seas 3 ft. $$ PKZ033-220245- Southern Chatham Strait- 1222 PM AKDT Wed Mar 21 2018 ...SMALL CRAFT ADVISORY LATE TONIGHT... .TODAY...Variable wind 10 kt becoming becoming N 20 kt in the afternoon. Seas 4 ft, except 7 ft near ocean entrances. .TONIGHT...N wind 25 kt. Gusts to 40 kt. Seas 5 ft. .THU...N wind 25 kt. Seas 5 ft. .THU NIGHT...N wind 20 kt. Seas 4 ft. .FRI...N wind 15 kt. Seas 3 ft. .SAT...N wind 10 kt. Seas 2 ft or less. .SUN...S wind 15 kt. Seas 3 ft. $$ PKZ034-220245- Frederick Sound- 1222 PM AKDT Wed Mar 21 2018 .TODAY...E wind 10 kt becoming N 20 kt. Seas 4 ft. .TONIGHT...N wind 20 kt. Seas 4 ft. .THU...N wind 25 kt. Seas 5 ft. .THU NIGHT...N wind 20 kt. Seas 4 ft. .FRI...NE wind 20 kt. Seas 4 ft. .SAT...E wind 10 kt. Seas 3 ft. .SUN...SE wind 15 kt. Seas 3 ft. $$ PKZ035-220245- Sumner Strait- 1222 PM AKDT Wed Mar 21 2018 .TODAY...E wind 10 kt becoming N. Seas 3 ft. .TONIGHT...N wind 15 kt. Seas 3 ft. Rain and snow showers late. .THU...NE wind 20 kt. Out of interior passes, gusts to 40 kt in the morning. Seas 4 ft. .THU NIGHT...E wind 15 kt. Seas 3 ft. .FRI...NE wind 15 kt. Seas 3 ft. .SAT...NE wind 10 kt. Seas 2 ft or less. .SUN...E wind 15 kt. Seas 3 ft. $$ PKZ036-220245- Clarence Strait- 1222 PM AKDT Wed Mar 21 2018 .TODAY...N wind 15 kt. Seas 2 ft or less then 3 ft. .TONIGHT...N wind 15 kt. Seas 3 ft. .THU...N wind 20 kt becoming E in the afternoon. Seas 4 ft. .THU NIGHT...E wind 15 kt. Seas 3 ft. Rain showers. .FRI...N wind 10 kt becoming light. Seas building to 2 ft or less. .SAT...N wind 10 kt becoming light. Seas building to 2 ft or less. .SUN...SE wind 15 kt. Seas 3 ft. $$
674 FZAK51 PAJK 212323 CWFAJK Coastal Waters Forecast FOR Southeast Alaska National Weather Service Juneau AK 323 PM AKDT Wed Mar 21 2018 Southeast Alaska Coastal Waters from Dixon Entrance to Cape Suckling out 100 nm 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. PKZ098-221615- 323 PM AKDT Wed Mar 21 2018 .SYNOPSIS FOR SOUTHEAST ALASKA INNER CHANNELS COASTAL WATERS... Low pressure in the SE gulf will track south and persist through Thu. Strong high pressure over Mainland Alaska will expand into NW Canada through Thu. $$ PKZ011-221615- Glacier Bay- 323 PM AKDT Wed Mar 21 2018 ...SMALL CRAFT ADVISORY THROUGH THURSDAY... .TONIGHT...N wind 30 kt. Seas 6 ft. .THU...NW wind 30 kt. Gusts to 45 kt. Seas 6 ft. .THU NIGHT...N wind 25 kt. Gusts to 40 kt. Seas 5 ft. .FRI...N wind 20 kt. Seas 4 ft. .FRI NIGHT...NE wind 10 kt. Seas 2 ft or less. .SAT...NE wind 10 kt. Seas 2 ft or less. .SUN...NE wind 10 kt becoming SE. Seas 2 ft or less. .MON...SE wind 10 kt. Seas 2 ft or less. $$ PKZ012-221615- Northern Lynn Canal- 323 PM AKDT Wed Mar 21 2018 ...STORM WARNING THROUGH THURSDAY... .TONIGHT...N wind 50 kt. Gusts to 70 kt. Seas 10 ft. .THU...N wind 50 kt. Gusts to 65 kt. Seas 10 ft. .THU NIGHT...N storm force wind to 50 kt diminishing to gale to 40 kt late. Seas 9 ft. .FRI...N wind 30 kt. Gusts to 45 kt. Seas 6 ft. .FRI NIGHT...N wind 20 kt. Seas 4 ft. .SAT...N wind 15 kt. Seas 3 ft. .SUN...N wind 10 kt becoming S. Seas 3 ft. .MON...S wind 15 kt. Seas 3 ft. $$ PKZ013-221615- Southern Lynn Canal- 323 PM AKDT Wed Mar 21 2018 ...STORM WARNING THROUGH THURSDAY... .TONIGHT...N wind 55 kt. Gusts to 70 kt. Seas 11 ft. .THU...N wind 50 kt. Seas 10 ft. .THU NIGHT...N storm force wind to 50 kt diminishing to gale to 40 kt late. Seas 9 ft. .FRI...N wind 30 kt. Seas 6 ft. .FRI NIGHT...N wind 15 kt. Seas 3 ft. .SAT...N wind 15 kt. Seas 3 ft. .SUN...N wind 10 kt becoming S. Seas 3 ft. .MON...SE wind 15 kt. Seas 3 ft. $$ PKZ021-221615- Icy Strait- 323 PM AKDT Wed Mar 21 2018 ...SMALL CRAFT ADVISORY THROUGH THURSDAY... .TONIGHT...E wind 30 kt. Seas 6 ft. .THU...E wind 30 kt. Seas 6 ft. .THU NIGHT...E wind 25 kt. Seas 6 ft. .FRI...E wind 20 kt. Seas 4 ft. .FRI NIGHT...E wind 15 kt. Seas 3 ft. .SAT...E wind 10 kt. Seas 2 ft or less. .SUN...E wind 10 kt. Seas 2 ft or less. .MON...E wind 15 kt. Seas 3 ft. $$ PKZ022-221615- Cross Sound- 323 PM AKDT Wed Mar 21 2018 ...GALE WARNING THROUGH THURSDAY... .TONIGHT...NE wind 35 kt. Gusts to 60 kt. Seas 8 ft. .THU...E wind 40 kt. Seas 8 ft. .THU NIGHT...E gale to 35 kt. Seas 7 ft. .FRI...E wind 20 kt. Seas 4 ft. .FRI NIGHT...E wind 10 kt. Seas 2 ft or less. .SAT...E wind 15 kt. Seas 3 ft. .SUN...E wind 15 kt. Seas 4 ft. .MON...E wind 20 kt. Seas 7 ft. $$ PKZ031-221615- Stephens Passage- 323 PM AKDT Wed Mar 21 2018 ...GALE WARNING THROUGH THURSDAY... .TONIGHT...N wind 35 kt. Gusts to 50 kt. Strongest winds north of Taku Inlet. Seas 7 ft. .THU...N wind 40 kt. Seas 8 ft. .THU NIGHT...N wind 30 kt. Seas 6 ft. .FRI...NE wind 25 kt. Seas 5 ft. .FRI NIGHT...NE wind 15 kt. Seas 3 ft. .SAT...NE wind 15 kt. Seas 3 ft. .SUN...SE wind 15 kt. Seas 3 ft. .MON...SE wind 15 kt. Seas 3 ft. $$ PKZ032-221615- Northern Chatham Strait- 323 PM AKDT Wed Mar 21 2018 ...GALE WARNING THROUGH THURSDAY... .TONIGHT...N wind 35 kt. Strongest winds north of Freshwater Bay. .THU...N wind 40 kt. Strongest winds north of Freshwater Bay. Seas 8 ft. .THU NIGHT...N gale to 35 kt. Seas 7 ft. .FRI...N wind 25 kt. Seas 5 ft. .FRI NIGHT...N wind 15 kt. Seas 3 ft. .SAT...N wind 15 kt. Seas 3 ft. .SUN...SE wind 15 kt. Seas 3 ft. .MON...SE wind 15 kt. Seas 3 ft. $$ PKZ033-221615- Southern Chatham Strait- 323 PM AKDT Wed Mar 21 2018 ...SMALL CRAFT ADVISORY THROUGH THURSDAY... .TONIGHT...N wind 25 kt. Gusts to 40 kt. Seas 5 ft. .THU...N wind 25 kt. Seas 5 ft. .THU NIGHT...N wind 20 kt. Seas 4 ft. .FRI...N wind 15 kt. Seas 3 ft. .FRI NIGHT...N wind 10 kt. Seas 2 ft or less. .SAT...N wind 10 kt. Seas 2 ft or less. .SUN...S wind 15 kt. Seas 3 ft. .MON...S wind 15 kt. Seas 3 ft. $$ PKZ034-221615- Frederick Sound- 323 PM AKDT Wed Mar 21 2018 ...SMALL CRAFT ADVISORY THURSDAY... .TONIGHT...N wind 20 kt. Seas 4 ft. .THU...N wind 25 kt. Seas 5 ft. .THU NIGHT...N wind 20 kt. Seas 4 ft. .FRI...NE wind 20 kt. Seas 4 ft. .FRI NIGHT...NE wind 15 kt. Seas 3 ft. .SAT...E wind 10 kt. Seas 3 ft. .SUN...SE wind 15 kt. Seas 3 ft. .MON...S wind 15 kt. Seas 3 ft. $$ PKZ035-221615- Sumner Strait- 323 PM AKDT Wed Mar 21 2018 ...SMALL CRAFT ADVISORY LATE TONIGHT THROUGH THURSDAY... .TONIGHT...N wind 15 kt becoming NE and increasing to 25 kt late. Seas building to 5 ft. Rain and snow showers late. .THU...NE wind 25 kt. Seas 4 ft. .THU NIGHT...E wind 15 kt. Seas 3 ft. .FRI...NE wind 15 kt. Seas 3 ft. .FRI NIGHT...NE wind 10 kt. Seas 2 ft or less. .SAT...NE wind 10 kt. Seas 2 ft or less. .SUN...E wind 15 kt. Seas 3 ft. .MON...E wind 15 kt. Seas 3 ft. $$ PKZ036-221615- Clarence Strait- 323 PM AKDT Wed Mar 21 2018 .TONIGHT...NW wind 15 kt. Seas 3 ft. .THU...NW wind 20 kt becoming E in the afternoon. Seas 4 ft. .THU NIGHT...E wind 15 kt. Seas 3 ft. Rain and snow showers late. .FRI...N wind 10 kt. Seas 2 ft or less. .FRI NIGHT...Light winds. Seas 2 ft or less. .SAT...N wind 10 kt becoming light. Seas building to 2 ft or less. .SUN...SE wind 15 kt. Seas 3 ft. .MON...S wind 20 kt. Seas 4 ft. $$
672 FZAK51 PAJK 221200 CWFAJK Coastal Waters Forecast FOR Southeast Alaska National Weather Service Juneau AK 400 AM AKDT Thu Mar 22 2018 Southeast Alaska Coastal Waters from Dixon Entrance to Cape Suckling out 100 nm 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. PKZ098-230315- 400 AM AKDT Thu Mar 22 2018 .SYNOPSIS FOR SOUTHEAST ALASKA INNER CHANNELS COASTAL WATERS... Low pressure SW of Haida Gwaii will persist through Thu. Strong high pressure in the southern Yukon will begin to weaken Thu night. $$ PKZ011-230315- Glacier Bay- 400 AM AKDT Thu Mar 22 2018 ...SMALL CRAFT ADVISORY THROUGH LATE TONIGHT... .TODAY...NW wind 30 kt. Gusts to 45 kt. Seas 6 ft. .TONIGHT...N wind 25 kt diminishing late. Gusts to 40 kt in the evening. Seas 5 ft. .FRI...N wind 15 kt. Seas 3 ft. .FRI NIGHT...N wind 10 kt. Seas 2 ft or less. .SAT...NE wind 10 kt. Seas 2 ft or less. .SUN...NE wind 10 kt becoming SE. Seas 2 ft or less. .MON...SE wind 15 kt. Seas 3 ft. $$ PKZ012-230315- Northern Lynn Canal- 400 AM AKDT Thu Mar 22 2018 ...STORM WARNING THROUGH THIS EVENING... .TODAY...N wind 50 kt. Gusts to 65 kt. Seas 10 ft. .TONIGHT...N wind 50 kt diminishing to 40 kt late. Seas 10 ft. .FRI...N gale to 35 kt diminishing in the afternoon. Seas 7 ft. .FRI NIGHT...N wind 25 kt. Seas 5 ft. .SAT...N wind 15 kt. Seas 3 ft. .SUN...N wind 10 kt becoming S. Seas 2 ft or less. .MON...SE wind 20 kt. Seas 4 ft. $$ PKZ013-230315- Southern Lynn Canal- 400 AM AKDT Thu Mar 22 2018 ...STORM WARNING THROUGH THIS EVENING... .TODAY...N wind 50 kt. Gusts to 65 kt. Seas 10 ft. .TONIGHT...N wind 50 kt diminishing to 40 kt late. Seas 10 ft. .FRI...N gale to 35 kt diminishing in the afternoon. Seas 7 ft. .FRI NIGHT...N wind 25 kt. Seas 5 ft. .SAT...N wind 15 kt. Seas 3 ft. .SUN...N wind 10 kt becoming S 15 kt. Seas 3 ft. .MON...SE wind 20 kt. Seas 4 ft. $$ PKZ021-230315- Icy Strait- 400 AM AKDT Thu Mar 22 2018 ...GALE WARNING THROUGH THIS MORNING... .TODAY...W of Point Adolphus, NE wind 35 kt diminishing to 30 kt in the afternoon. E of Point Adolphus, NW wind 20 kt. Seas 7 ft. .TONIGHT...W of Point Adolphus, NE wind 30 kt. E of Point Adolphus, NW wind 15 kt. Seas 6 ft. .FRI...NW wind 20 kt diminishing in the afternoon. Seas 4 ft. .FRI NIGHT...E wind 15 kt. Seas 3 ft. .SAT...E wind 10 kt. Seas 2 ft or less. .SUN...E wind 10 kt. Seas 2 ft or less. .MON...E wind 15 kt. Seas 3 ft. $$ PKZ022-230315- Cross Sound- 400 AM AKDT Thu Mar 22 2018 ...GALE WARNING THROUGH LATE TONIGHT... .TODAY...E wind 40 kt. Gusts of 65 kt. Seas 8 ft. .TONIGHT...E wind 35 kt. Seas 6 ft. .FRI...E wind 25 kt diminishing to 15 kt in the afternoon. Seas 3 ft. .FRI NIGHT...E wind 10 kt. Seas 3 ft. .SAT...E wind 15 kt. Seas 3 ft. .SUN...E wind 15 kt increasing to 25 kt. Seas 5 ft. .MON...E wind 25 kt becoming SW 15 kt. Seas 7 ft. $$ PKZ031-230315- Stephens Passage- 400 AM AKDT Thu Mar 22 2018 ...GALE WARNING THROUGH THIS AFTERNOON... .TODAY...N wind 40 kt. Gusts to 55 kt out of interior passes. Seas 8 ft. .TONIGHT...N wind 30 kt. Gusts to 45 kt out of interior passes. Seas 6 ft. .FRI...NE wind 25 kt. Seas 5 ft. .FRI NIGHT...NE wind 25 kt. Seas 5 ft. .SAT...NE wind 15 kt. Seas 3 ft. .SUN...SE wind 15 kt. Seas 3 ft. .MON...SE wind 20 kt. Seas 4 ft. $$ PKZ032-230315- Northern Chatham Strait- 400 AM AKDT Thu Mar 22 2018 ...GALE WARNING THROUGH THIS EVENING... .TODAY...N wind 40 kt. Highest winds northern half. Seas 9 ft. .TONIGHT...N wind 35 kt diminishing in the late evening. Highest winds northern half. Seas 7 ft. .FRI...N wind 25 kt. Seas 5 ft. .FRI NIGHT...N wind 20 kt. Seas 4 ft. .SAT...N wind 10 kt. Seas 2 ft or less. .SUN...SE wind 15 kt. Seas 3 ft. .MON...SE wind 15 kt. Seas 3 ft. $$ PKZ033-230315- Southern Chatham Strait- 400 AM AKDT Thu Mar 22 2018 ...SMALL CRAFT ADVISORY THROUGH LATE TONIGHT... .TODAY...N wind 30 kt. Seas 6 ft. .TONIGHT...N wind 25 kt. Gusts to 40 kt in the evening. Seas 5 ft. .FRI...N wind 20 kt. Seas 4 ft. .FRI NIGHT...N wind 10 kt. Seas 2 ft or less. .SAT...Light winds. Seas 2 ft or less. .SUN...SE wind 15 kt. Seas 3 ft. .MON...S wind 20 kt. Seas 4 ft. $$ PKZ034-230315- Frederick Sound- 400 AM AKDT Thu Mar 22 2018 ...SMALL CRAFT ADVISORY THROUGH LATE TONIGHT... .TODAY...N wind 25 kt. Higher gusts out of interior passes. Seas 5 ft. .TONIGHT...N wind 25 kt. Seas 5 ft. .FRI...NE wind 15 kt. Seas 3 ft. .FRI NIGHT...NE wind 10 kt. Seas 2 ft or less. .SAT...NE wind 15 kt. Seas 3 ft. .SUN...SE wind 15 kt. Seas 3 ft. .MON...SE wind 20 kt. Seas 4 ft. $$ PKZ035-230315- Sumner Strait- 400 AM AKDT Thu Mar 22 2018 ...SMALL CRAFT ADVISORY TODAY... .TODAY...NE wind 25 kt. Out of interior passes, gusts to 40 kt. Seas 5 ft. .TONIGHT...E wind 20 kt. Gusts to 40 kt. Seas 4 ft. .FRI...NE wind 15 kt. Seas 3 ft. .FRI NIGHT...Light winds. Seas 2 ft or less. .SAT...Light winds. Seas 2 ft or less. .SUN...E wind 15 kt. Seas 3 ft. .MON...E wind 15 kt. Seas 3 ft. $$ PKZ036-230315- Clarence Strait- 400 AM AKDT Thu Mar 22 2018 .TODAY...NE wind 15 kt. Seas 3 ft. Rain showers early in the morning. .TONIGHT...NE wind 15 kt. Seas 3 ft. Rain showers. .FRI...NE wind 10 kt. Seas 2 ft or less. .FRI NIGHT...Light winds. Seas 2 ft or less. .SAT...Light winds. Seas 2 ft or less. .SUN...SE wind 15 kt. Seas 3 ft. .MON...S wind 25 kt. Seas 5 ft. $$
668 FZAK51 PAJK 222331 CWFAJK Coastal Waters Forecast FOR Southeast Alaska National Weather Service Juneau AK 331 PM AKDT Thu Mar 22 2018 Southeast Alaska Coastal Waters from Dixon Entrance to Cape Suckling out 100 nm 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. PKZ098-231630- 331 PM AKDT Thu Mar 22 2018 .SYNOPSIS FOR SOUTHEAST ALASKA INNER CHANNELS COASTAL WATERS... Low pressure SW of Haida Gwaii will weaken tonight while moving further southeast. Strong high pressure in the southern Yukon will also begin to weaken tonight but will persist into Friday. $$ PKZ011-231630- Glacier Bay- 331 PM AKDT Thu Mar 22 2018 ...SMALL CRAFT ADVISORY THROUGH LATE TONIGHT... .TONIGHT...N wind 25 kt. Gusts to 40 kt. Seas 5 ft. .FRI...N wind 15 kt. Seas 3 ft. .FRI NIGHT...N wind 10 kt. Seas 2 ft or less. .SAT...NE wind 10 kt. Seas 2 ft or less. .SAT NIGHT...NE wind 10 kt. Seas 2 ft or less. .SUN...NE wind 10 kt becoming SE. Seas 2 ft or less. .MON...SE wind 15 kt. Seas 3 ft. .TUE...SE wind 15 kt. Seas 3 ft. $$ PKZ012-231630- Northern Lynn Canal- 331 PM AKDT Thu Mar 22 2018 ...STORM WARNING THROUGH THIS EVENING... .TONIGHT...N wind 50 kt diminishing to 40 kt late. Seas 12 ft. .FRI...N wind 40 kt diminishing to 30 kt in the afternoon. Seas 10 ft subsiding to 7 ft in the afternoon. .FRI NIGHT...N wind 30 kt. Seas 7 ft. .SAT...N wind 30 kt. Seas 7 ft. .SAT NIGHT...N wind 25 kt. Seas 5 ft. .SUN...N wind 20 kt becoming S 10 kt. Seas 2 ft or less. .MON...SE wind 15 kt. Seas 4 ft. .TUE...S wind 15 kt. Seas 4 ft. $$ PKZ013-231630- Southern Lynn Canal- 331 PM AKDT Thu Mar 22 2018 ...STORM WARNING THROUGH THIS EVENING... .TONIGHT...N wind 50 kt diminishing to 35 kt late. Seas 11 ft. .FRI...N wind 35 kt diminishing to 20 kt in the afternoon. Seas 9 ft. .FRI NIGHT...N wind 25 kt. Seas 5 ft. .SAT...N wind 25 kt. Seas 5 ft. .SAT NIGHT...N wind 20 kt. Seas 4 ft. .SUN...N wind 15 kt becoming S. Seas 3 ft. .MON...SE wind 20 kt. Seas 4 ft. .TUE...S wind 15 kt. Seas 4 ft. $$ PKZ021-231630- Icy Strait- 331 PM AKDT Thu Mar 22 2018 ...SMALL CRAFT ADVISORY THROUGH TONIGHT... .TONIGHT...NW wind 20 kt. West of Point Adolphus, winds NE at 25 kt. Seas 8 ft. .FRI...NW wind 15 kt. Seas 6 ft. .FRI NIGHT...E wind 15 kt. Seas 3 ft. .SAT...E wind 10 kt. Seas 2 ft or less. .SAT NIGHT...E wind 10 kt. Seas 2 ft or less. .SUN...E wind 10 kt. Seas 2 ft or less. .MON...E wind 15 kt. Seas 3 ft. .TUE...SE wind 10 kt. Seas 2 ft or less. $$ PKZ022-231630- Cross Sound- 331 PM AKDT Thu Mar 22 2018 ...GALE WARNING THROUGH LATE TONIGHT... .TONIGHT...NE wind 35 kt. Gusts to 55 kt. Seas 8 ft. .FRI...NE wind 25 kt becoming E 10 kt in the afternoon. Seas 5 ft subsiding to 2 ft in the afternoon. .FRI NIGHT...E wind 10 kt. Seas 2 ft or less. .SAT...E wind 15 kt. Seas 3 ft. .SAT NIGHT...E wind 10 kt. Seas 2 ft or less. .SUN...E wind 15 kt increasing to 25 kt. Seas 5 ft. .MON...E wind 25 kt becoming SW 15 kt. Seas 7 ft. .TUE...SW wind 15 kt. Seas 8 ft. $$ PKZ031-231630- Stephens Passage- 331 PM AKDT Thu Mar 22 2018 ...GALE WARNING THROUGH LATE TONIGHT... .TONIGHT...N wind 35 kt diminishing late. Seas 8 ft. .FRI...NE wind 20 kt. Seas 7 ft. .FRI NIGHT...NE wind 20 kt. Gusts to 40 kt out of interior passes. Seas 4 ft. .SAT...NE wind 20 kt. Gusts to 40 kt out of interior passes. Seas 4 ft. .SAT NIGHT...NE wind 20 kt. Seas 4 ft. .SUN...SE wind 15 kt. Seas 3 ft. .MON...SE wind 20 kt. Seas 4 ft. .TUE...S wind 15 kt. Seas 4 ft. $$ PKZ032-231630- Northern Chatham Strait- 331 PM AKDT Thu Mar 22 2018 ...GALE WARNING THROUGH THIS EVENING... .TONIGHT...N wind 40 kt diminishing to 30 kt late. Strongest winds north of Freshwater Bay. Seas 9 ft. .FRI...N wind 25 kt. Strongest winds north of Freshwater Bay. Seas 8 ft. .FRI NIGHT...N wind 15 kt. Seas 4 ft. .SAT...N wind 10 kt. Seas 2 ft or less. .SAT NIGHT...N wind 10 kt. Seas 2 ft or less. .SUN...SE wind 15 kt. Seas 3 ft. .MON...SE wind 15 kt. Seas 3 ft. .TUE...S wind 10 kt. Seas 2 ft or less. $$ PKZ033-231630- Southern Chatham Strait- 331 PM AKDT Thu Mar 22 2018 ...SMALL CRAFT ADVISORY THROUGH TONIGHT... .TONIGHT...N wind 30 kt diminishing to 20 kt late. Seas 6 ft. .FRI...N wind 20 kt. Seas 4 ft. .FRI NIGHT...NE wind 10 kt. Seas 2 ft or less. .SAT...Light winds. Seas 2 ft or less, except 4 ft near ocean entrances. .SAT NIGHT...Light winds. Seas 2 ft or less, except 4 ft near ocean entrances. .SUN...SE wind 15 kt. Seas 3 ft. .MON...S wind 20 kt. Seas 4 ft. .TUE...S wind 15 kt. Seas 3 ft. $$ PKZ034-231630- Frederick Sound- 331 PM AKDT Thu Mar 22 2018 ...SMALL CRAFT ADVISORY THROUGH LATE TONIGHT... .TONIGHT...N wind 25 kt. Seas 5 ft. .FRI...NE wind 20 kt. Seas 4 ft. .FRI NIGHT...NE wind 15 kt. Seas 3 ft. .SAT...NE wind 15 kt. Seas 3 ft. .SAT NIGHT...NE wind 10 kt. Seas 2 ft or less. .SUN...SE wind 15 kt. Seas 3 ft. .MON...SE wind 15 kt. Seas 4 ft. .TUE...S wind 10 kt. Seas 3 ft. $$ PKZ035-231630- Sumner Strait- 331 PM AKDT Thu Mar 22 2018 .TONIGHT...E wind 20 kt. Gusts to 40 kt. Seas 4 ft. .FRI...NE wind 15 kt. Seas 3 ft. .FRI NIGHT...Light winds. Seas 2 ft or less. .SAT...Light winds. Seas 2 ft or less. .SAT NIGHT...Light winds. Seas 2 ft or less. .SUN...E wind 15 kt. Seas 3 ft. .MON...E wind 15 kt. Seas 3 ft. .TUE...S wind 15 kt. Seas 4 ft. $$ PKZ036-231630- Clarence Strait- 331 PM AKDT Thu Mar 22 2018 .TONIGHT...NE wind 20 kt. Seas 4 ft. Rain showers. Snow showers late. .FRI...NE wind 10 kt. Seas 2 ft or less. .FRI NIGHT...Light winds. Seas 2 ft or less, except 4 ft near ocean entrances. .SAT...Light winds. Seas 2 ft or less. .SAT NIGHT...Light winds. Seas 2 ft or less, except 4 ft near ocean entrances. .SUN...SE wind 15 kt. Seas 3 ft. .MON...S wind 25 kt. Seas 5 ft. .TUE...SE wind 15 kt. Seas 4 ft. $$
454 FZAK51 PAJK 231158 CWFAJK Coastal Waters Forecast FOR Southeast Alaska National Weather Service Juneau AK 358 AM AKDT Fri Mar 23 2018 Southeast Alaska Coastal Waters from Dixon Entrance to Cape Suckling out 100 nm 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. PKZ098-240315- 358 AM AKDT Fri Mar 23 2018 .SYNOPSIS FOR SOUTHEAST ALASKA INNER CHANNELS COASTAL WATERS... Strong high pressure in the southern Yukon will weaken Friday but will persist through Sat night. A weak area of low pressure will develop in the northern gulf Fri night and drift SE through Sat night. $$ PKZ011-240315- Glacier Bay- 358 AM AKDT Fri Mar 23 2018 .TODAY...N wind 20 kt diminishing in the afternoon. Seas 4 ft. .TONIGHT...N wind 15 kt. Seas 3 ft. .SAT...N wind 10 kt. Seas 2 ft or less. .SAT NIGHT...N wind 15 kt. Seas 3 ft. .SUN...SE wind 10 kt. Seas 2 ft or less. .MON...SE wind 15 kt. Seas 3 ft. .TUE...SE wind 15 kt. Seas 3 ft. $$ PKZ012-240315- Northern Lynn Canal- 358 AM AKDT Fri Mar 23 2018 ...GALE WARNING THROUGH THIS AFTERNOON... .TODAY...N wind 45 kt diminishing to 30 kt in the late afternoon. Seas 9 ft. .TONIGHT...N wind 30 kt. Gusts to 45 kt. Seas 6 ft. .SAT...N wind 30 kt diminishing to 20 kt in the afternoon. Gusts to 45 kt in the morning. Seas 5 ft. .SAT NIGHT...N wind 25 kt. Seas 5 ft. .SUN...N wind 15 kt becoming S. Seas 3 ft. .MON...SE wind 20 kt. Seas 4 ft. .TUE...S wind 20 kt. Seas 4 ft. $$ PKZ013-240315- Southern Lynn Canal- 358 AM AKDT Fri Mar 23 2018 ...GALE WARNING THROUGH THIS MORNING... .TODAY...N wind 40 kt diminishing to 30 kt in the afternoon. Seas 8 ft. .TONIGHT...N wind 25 kt. Seas 5 ft. .SAT...N wind 25 kt diminishing in the afternoon. Gusts to 40 kt in the morning. Seas 5 ft. .SAT NIGHT...N wind 20 kt. Seas 4 ft. .SUN...N wind 15 kt becoming S. Seas 3 ft. .MON...SE wind 20 kt. Seas 4 ft. .TUE...S wind 15 kt. Seas 4 ft. $$ PKZ021-240315- Icy Strait- 358 AM AKDT Fri Mar 23 2018 ...SMALL CRAFT ADVISORY THROUGH THIS MORNING... .TODAY...NE wind 25 kt diminishing to 10 kt in the afternoon. Seas 5 ft subsiding to 2 ft in the afternoon. Highest winds and seas W of Point Adolphus. .TONIGHT...E wind 15 kt. Seas 3 ft. .SAT...NE wind 15 kt. Seas 3 ft. .SAT NIGHT...NE wind 15 kt. Seas 3 ft. .SUN...E wind 15 kt. Seas 3 ft. .MON...E wind 15 kt. Seas 3 ft. .TUE...SE wind 10 kt. Seas 2 ft or less. $$ PKZ022-240315- Cross Sound- 358 AM AKDT Fri Mar 23 2018 ...SMALL CRAFT ADVISORY THROUGH THIS MORNING... .TODAY...NE wind 30 kt becoming E 15 kt in the afternoon. Seas 6 ft subsiding to 4 ft. .TONIGHT...E wind 15 kt. Seas 3 ft. .SAT...NE wind 15 kt. Seas 3 ft. .SAT NIGHT...NE wind 15 kt. Seas 4 ft. .SUN...E wind 25 kt. Seas 6 ft. .MON...E wind 25 kt becoming SW 15 kt. Seas 7 ft. .TUE...SW wind 15 kt. Seas 9 ft. $$ PKZ031-240315- Stephens Passage- 358 AM AKDT Fri Mar 23 2018 ...SMALL CRAFT ADVISORY THROUGH THIS AFTERNOON... .TODAY...N wind 30 kt diminishing to 15 kt in the afternoon. Higher gusts out of interior passes in the morning. Seas 6 ft subsiding to 3 ft in the afternoon. .TONIGHT...N wind 20 kt. Seas 4 ft. .SAT...N wind 20 kt. Seas 4 ft. .SAT NIGHT...N wind 20 kt. Seas 4 ft. .SUN...SE wind 15 kt. Seas 3 ft. .MON...SE wind 20 kt. Seas 4 ft. .TUE...S wind 20 kt. Seas 4 ft. $$ PKZ032-240315- Northern Chatham Strait- 358 AM AKDT Fri Mar 23 2018 ...SMALL CRAFT ADVISORY THROUGH THIS MORNING... .TODAY...N wind 25 kt diminishing in the afternoon. Seas 5 ft. .TONIGHT...N wind 15 kt. Seas 3 ft. .SAT...N wind 15 kt. Seas 3 ft. .SAT NIGHT...N wind 15 kt. Seas 3 ft. .SUN...SE wind 15 kt. Seas 3 ft. .MON...SE wind 15 kt. Seas 3 ft. .TUE...S wind 10 kt. Seas 2 ft or less. $$ PKZ033-240315- Southern Chatham Strait- 358 AM AKDT Fri Mar 23 2018 .TODAY...N wind 20 kt. Seas 4 ft. .TONIGHT...NE wind 15 kt. Seas 3 ft. .SAT...N wind 10 kt. Seas 2 ft or less. .SAT NIGHT...NE wind 15 kt. Seas 3 ft. .SUN...SE wind 15 kt. Seas 3 ft. .MON...S wind 20 kt. Seas 4 ft. .TUE...S wind 15 kt. Seas 3 ft. $$ PKZ034-240315- Frederick Sound- 358 AM AKDT Fri Mar 23 2018 ...SMALL CRAFT ADVISORY THROUGH THIS MORNING... .TODAY...N wind 25 kt becoming NE 15 kt in the afternoon. Seas 5 ft. .TONIGHT...NE wind 10 kt. Seas 2 ft or less. .SAT...NE wind 10 kt. Seas 2 ft or less. .SAT NIGHT...NE wind 15 kt. Seas 3 ft. .SUN...SE wind 15 kt. Seas 3 ft. .MON...SE wind 20 kt. Seas 4 ft. .TUE...S wind 15 kt. Seas 3 ft. $$ PKZ035-240315- Sumner Strait- 358 AM AKDT Fri Mar 23 2018 .TODAY...NE wind 20 kt diminishing in the morning. Seas 4 ft. Rain and snow showers in the morning. .TONIGHT...E wind 10 kt. Seas 2 ft or less. .SAT...E wind 10 kt in the morning becoming light. Seas 2 ft or less. .SAT NIGHT...E wind 10 kt. Seas 2 ft or less. .SUN...E wind 15 kt. Seas 3 ft. .MON...E wind 15 kt. Seas 3 ft. .TUE...S wind 20 kt. Seas 4 ft. $$ PKZ036-240315- Clarence Strait- 358 AM AKDT Fri Mar 23 2018 .TODAY...SE wind 15 kt becoming N in the afternoon. Seas 3 ft. Rain showers. .TONIGHT...N wind 10 kt. Seas 2 ft or less. Rain showers in the evening. .SAT...NW wind 10 kt in the morning becoming light. Seas 2 ft or less. .SAT NIGHT...S wind 10 kt. Seas 2 ft or less. .SUN...SE wind 20 kt. Seas 4 ft. .MON...S wind 25 kt. Seas 5 ft. .TUE...S wind 20 kt. Seas 4 ft. $$
What forecasters said that day
The local office's own words before this storm warning 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 storm warning went out at Mar 20, 9:43 PM AKDT, 6 hours 20 minutes earlier.
Area forecast discussion, Mar 20, 9:43 PM AKDT, 6 hours 20 minutes before
Southeast Alaska Forecast Discussion
National Weather Service Juneau AK
943 PM AKDT Tue Mar 20 2018
.UPDATE...Forecast updated this evening in the Haines area due to
continues snow shower underneath a deformation band. 3 to 5 inches
had been reported to have fallen through the evening hours so
issued a warning for heavy snow through the middle of the night.
On the south side of the low a band of enhanced showers is moving
toward Baranof Island. Strong cold advection headed to the coast
with some upper level support is enhancing shower strength that is
sparking a few isolated thunderstorms over the marine waters for
the overnight time frames. They may approach the coast of Baranof
Island. The that area of the marine forecast was updated.
&&
.SHORT TERM...Satellite imagery this afternoon showing a low
pressure system in the NE AK Gulf tracking to the south. The front
associated with this low produced mix of rain and snow overnight
for a majority of Panhandle. Precip transitioned to showers as
cold air aloft moved in creating unstable conditions. Model
sounding lapse rates of 5 c/km were confirmed by the PAYA 12z
sounding. As the low center moves south shower bands were expected
to increase under deformation zone for the northern central
panhandle. However difficult to pin point exact location of
banding. Due to warm boundary layer for most locations (expect the
far norther regions) snow fall accumulation at lower elevations
limited to less than 1 inch, with 1 to 2 inches for the northern
regions. As cold air continues to move in behind the low over
night temps will drop below freezing, which will aid in snow
accumulation for remaining scattered showers. Tuesday night into
Wednesday will switch to a drying period as the low center tracks
south. Still expect a healthy diurnal temperatures range as
increased March daylight will help warm temps.
Main change in weather will be building high pressure over the
Yukon and tightening northerly pressure gradient between the
current Gulf low, which will have moved just off the Haida Gwaii
coast. Gale force outflow winds over the coastal waters pick up
late tonight and last through Thursday. Expecting at least max
northerly gales for the northern inner channels and 40 to 50 mph
gusts out of interior passes. Long wind fetch should increase
waves heights down Lynn Canal and into N Chatham Strait. While
Downtown Juneau and Douglas will be windy at this time not
expecting a true Taku wind event and for now have gusts at 50 mph.
While getting good cross barrier flow and ridge top temp inversion,
not getting the necessary critical level at 500 mb, where wind
speed/direction shift, which promotes mountain wave development,
since the vertically stacked low is very deep.
Southern regions will likely be back into a wet pattern as the
Haida Gwaii surface low tracks east moving in more precip bands.
Not expecting these bands to move much further north than Sumner
Strait and as of now no significant QPF. Did start to warm surface
temperatures for those areas due to the more SE'ly flow so likely
see more rain than snow.
Initially models still mostly in line with inherited forecast,
did a blend of NAM/Canadian for pop field as the low was slightly
slower in moving to the south this evening. Timing of winds
transitioning from west and south to north and east may be delayed
a few hours due to the slower moving low. Some NAMNest blended for
local wind effects on Wed night and Thu. Used more GFS/ECMWF for
Thu to depict the Haida Gwaii low and increased pop moving over
the south. Forecast confidence is average.
.LONG TERM.../Thursday through Tuesday/...as of 10 pm Monday.
Little change in the overall upper level pattern through the long
range today. The nearly stationary upper low over the NE Pacific
along with the upstream ridge over western Alaska all remain in
relatively the same place as yesterday. Guidance has also not
moved much on when the upstream ridge breaks down (still forecast
for Saturday) and we transition to more zonal flow by next week.
It is past that pattern change that guidance is still having
troubles. Timing of individual short waves for early next week is
low confidence at best at the moment, but the general trend is for
a W to SW zonal flow.
At the surface, a cold air mass dropping S from the Yukon
dominates the late week period with outflow winds up to gale
force blowing out of the usual outflow areas. Highest winds appear
to be Thu as one last trough from the departing upper low and the
building high in the Yukon combine to strengthen pressure
gradients across the panhandle. Main changes here were for local
effects to strengthen winds in some areas. There is also the
possibility of some Taku winds developing for downtown Juneau and
Douglas on Thu through the lack of a critical level will likely
limit observed wind speeds.
Into the weekend and early next week, the pattern shift aloft
results in a more active and wet pattern for the panhandle.
Generally favored ECMWF and WPC for guidance out here as the 18z
GFS had a much further south storm track (and a drier forecast as
a result) then either the ECMWF, WPC, or the ensemble means were
showing. The new 0z GFS offered more support to the wetter
solutions of the ECMWF and WPC by trending further north with the
storm tracks for next week. Decided to keep (and in some cases
raise) the chance and likely pops that are present past Sunday.
&&
.AJK Watches/Warnings/Advisories...
PUBLIC...Winter Storm Warning until 1 AM AKDT Wednesday for AKZ019.
Strong Wind from Wednesday morning through Wednesday afternoon
for AKZ018.
MARINE...Gale Warning for PKZ012-051.
Small Craft Advisory for PKZ011-013-022-031-043-052-053.
Small Craft Advisory due to Seas for PKZ041-042.
&&
Bezenek / PRB/EAL
Visit us at http://www.weather.gov/JuneauThe office that day
Everything else NWS Juneau, AK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 20, 7:22 PM AKDT | Winter Storm Warning | AJK | 4 hr | |
| Mar 21, 3:50 AM AKDT | Gale Warning | AJK | 60 hr | |
| Mar 21, 4:03 AM AKDT | Gale Warning | AJK | 48 hr | |
| Mar 21, 4:03 AM AKDT | Small Craft Advisory | AJK | 48 hr | |
| Mar 21, 3:23 PM AKDT | Gale Warning | AJK | 37 hr | |
| Mar 21, 3:23 PM AKDT | Small Craft Advisory | AJK | 48 hr |
Nearby
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.