Alert archive / Alaska / Gale Warnings in 2017
Gale Warning 583, NWS Anchorage, AK
NWS Anchorage, AK issued this gale warning at Nov 22, 2017, 4:01 AM AKST. It was in force for 59 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
- Nov 22, 2017, 4:01 AM AKST (13:01 UTC)
- Expired
- Nov 24, 2017, 3:26 PM AKST
- In force
- 59 hr
- Issued by
- NWS Anchorage, AK
The text
As transmitted.
503 FZAK62 PAFC 221301 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 401 AM AKST Wed Nov 22 2017 Offshore Waters Forecast for the Bering Sea Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ499-230215- 401 AM AKST Wed Nov 22 2017 .SYNOPSIS FOR CENTRAL BERING SEA... A 983 mb low at 58N 180E moves to 60N 164W at 968 mb Thu morning then shifts south and moves to 55N 147W at 978 mb. The associated front pushes across the Bering and over the Alaska Peninsula by Thu afternoon. $$ PKZ411-230215- Bering Sea Offshore West of 180 and East of the International Dateline- 401 AM AKST Wed Nov 22 2017 ...GALE WARNING THROUGH TONIGHT... .TODAY...NW wind 30 to 45 kt. Seas 14 to 22 ft. .TONIGHT...NW wind 30 to 45 kt becoming W 20 to 35 kt after midnight. Seas 13 to 21 ft. .THU...SW wind 15 to 30 kt. Seas 9 to 15 ft. .THU NIGHT...S wind 20 to 30 kt. Seas 8 to 12 ft. .FRI THROUGH SAT...W wind 25 to 40 kt. Seas 10 to 18 ft. .SUN...S wind 10 to 25 kt. Seas 9 to 14 ft. $$ PKZ412-230215- Bering Sea Offshore 171W to 180 and North of 56N- 401 AM AKST Wed Nov 22 2017 ...STORM WARNING THROUGH THURSDAY... .TODAY...W wind 35 to 50 kt. Gusts to 65 kt. Seas 14 to 21 ft building to 20 to 27 ft in the afternoon. Snow showers. .TONIGHT...NW wind 40 to 55 kt. Gusts to 70 kt. Seas 23 to 34 ft. Snow showers. .THU...NW wind 35 to 50 kt becoming W 25 to 35 kt in the afternoon. Gusts to 65 kt in the morning. Seas 16 to 31 ft. .THU NIGHT...W wind 20 to 30 kt. Seas 11 to 18 ft. .FRI...SW wind 20 to 35 kt. Seas 8 to 13 ft. .SAT...W wind 15 to 30 kt. Seas 9 to 15 ft. .SUN...NE wind up to 15 kt. Seas 6 to 11 ft. $$ PKZ413-230215- Bering Sea Offshore 171W to 180 and South of 56N- 401 AM AKST Wed Nov 22 2017 ...STORM WARNING TONIGHT... .TODAY...W wind 35 to 45 kt. Seas 16 to 23 ft. .TONIGHT...NW wind 35 to 50 kt. Gusts to 65 kt. Seas 18 to 29 ft. Snow showers. .THU...NW wind 30 to 45 kt becoming W 15 to 30 kt in the afternoon. Seas 15 to 30 ft. .THU NIGHT...W wind 15 to 30 kt. Seas 9 to 17 ft. .FRI...S wind 25 to 40 kt. Seas 8 to 13 ft. .SAT...W wind 20 to 35 kt. Seas 7 to 12 ft. .SUN...N wind up to 20 kt. Seas 5 to 10 ft. $$ PKZ414-230215- Bering Sea Offshore East of 171W- 401 AM AKST Wed Nov 22 2017 ...STORM WARNING TONIGHT AND THURSDAY... .TODAY...SW wind 30 to 45 kt. Seas 13 to 21 ft. Rain. .TONIGHT...W wind 45 to 60 kt. Gusts to 75 kt. Seas 20 to 34 ft. Rain showers and snow showers. .THU...NW wind 45 to 60 kt. Seas 21 to 36 ft. Rain showers. .THU NIGHT...NW wind 30 to 45 kt. Seas 15 to 23 ft. .FRI...W wind 15 to 30 kt. Seas 7 to 12 ft. .SAT...S wind 15 to 30 kt. Seas 7 to 12 ft. .SUN...N wind 15 kt. Seas 9 to 15 ft. $$
5 follow-up statements
091 FZAK62 PAFC 230023 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 323 PM AKST Wed Nov 22 2017 Offshore Waters Forecast for the Bering Sea Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ499-231345- 323 PM AKST Wed Nov 22 2017 .SYNOPSIS FOR CENTRAL BERING SEA... A 969 mb low at 61N 171W dives to 52N 151W at 983 mb Thu night then merges with a 978 mb low in the Southern Gulf of Alaska for Fri afternoon. The associated front pushes across the Alaska Peninsula through Fri afternoon. A new front edges over the Western Aleutians by Fri afternoon. $$ PKZ411-231345- Bering Sea Offshore West of 180 and East of the International Dateline- 323 PM AKST Wed Nov 22 2017 ...GALE WARNING TONIGHT... .TONIGHT...NW wind 30 to 45 kt becoming W 20 to 35 kt after midnight. Seas 13 to 21 ft. .THU...SW wind 15 to 30 kt. Seas 9 to 15 ft. .THU NIGHT...S wind 20 to 30 kt. Seas 8 to 12 ft. .FRI...S wind 25 to 40 kt. Seas 10 to 15 ft. .FRI NIGHT...W wind 20 to 35 kt. Seas 9 to 15 ft. .SAT THROUGH SUN...NW wind 20 to 35 kt. Seas 9 to 14 ft. .MON...E wind 20 to 35 kt. Seas 11 to 19 ft. $$ PKZ412-231345- Bering Sea Offshore 171W to 180 and North of 56N- 323 PM AKST Wed Nov 22 2017 ...STORM WARNING THROUGH THURSDAY... .TONIGHT...NW wind 40 to 55 kt. Seas 23 to 34 ft. Snow showers. .THU...NW wind 35 to 50 kt becoming W 25 to 35 kt in the afternoon. Seas 17 to 32 ft subsiding to 14 to 22 ft in the afternoon. .THU NIGHT...W wind 20 to 30 kt. Seas 11 to 17 ft. .FRI...SW wind 20 to 35 kt. Seas 11 ft. .FRI NIGHT...S wind 20 to 35 kt. Seas 9 to 12 ft. .SAT THROUGH SUN...N wind 25 to 40 kt. Seas 9 to 14 ft. .MON...E wind 15 to 30 kt. Seas 8 to 13 ft. $$ PKZ413-231345- Bering Sea Offshore 171W to 180 and South of 56N- 323 PM AKST Wed Nov 22 2017 ...STORM WARNING TONIGHT... .TONIGHT...NW wind 35 to 50 kt. Seas 17 to 29 ft. Snow showers. .THU...NW wind 30 to 45 kt becoming W 15 to 30 kt in the afternoon. Seas 14 to 29 ft. .THU NIGHT...W wind 15 to 30 kt becoming SW after midnight. Seas 9 to 17 ft. .FRI...S wind 25 to 40 kt. Seas 8 to 12 ft. .FRI NIGHT...S wind 20 to 35 kt. Seas 8 to 13 ft. .SAT...NW wind 20 to 35 kt. Seas 6 to 11 ft. .SUN...NW wind 25 to 40 kt. Seas 12 to 19 ft. .MON...S wind 20 to 35 kt. Seas 10 to 18 ft. $$ PKZ414-231345- Bering Sea Offshore East of 171W- 323 PM AKST Wed Nov 22 2017 ...STORM WARNING THROUGH THURSDAY... .TONIGHT...W wind 45 to 60 kt. Seas 20 to 35 ft. Rain showers and snow showers. .THU...NW wind 45 to 60 kt. Seas 22 to 37 ft. and rain showers. .THU NIGHT...NW wind 30 to 45 kt diminishing to 20 to 30 kt after midnight. Seas 14 to 22 ft. .FRI...NW wind 15 to 30 kt. Seas 9 to 13 ft. .FRI NIGHT...SW wind 15 to 30 kt. Seas 6 to 11 ft. .SAT...SE wind 15 to 30 kt. Seas 6 to 11 ft. .SUN...S wind 20 to 35 kt. Seas 12 to 19 ft. .MON...NW wind 20 to 35 kt. Seas 9 to 17 ft. $$
474 FZAK62 PAFC 231243 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 343 AM AKST Thu Nov 23 2017 Offshore Waters Forecast for the Bering Sea Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ499-240200- 343 AM AKST Thu Nov 23 2017 .SYNOPSIS FOR CENTRAL BERING SEA... A 969 mb low at 60N 162W will move to 57N 158W at 979 mb by this afternoon, then it will move into the western Gulf at 984 mb this evening. A front pushing into the western Aleutians Fri morning will continue east to arrive in the eastern Aleutians by Sat morning. $$ PKZ411-240200- Bering Sea Offshore West of 180 and East of the International Dateline- 343 AM AKST Thu Nov 23 2017 ...GALE WARNING FRIDAY... .TODAY...SW wind 15 to 25 kt. Seas 9 to 15 ft. .TONIGHT...S wind 20 to 30 kt. Seas 8 to 12 ft. .FRI...S wind 25 to 35 kt. Seas 10 to 14 ft. Rain. .FRI NIGHT...W wind 15 to 30 kt. Seas 9 to 14 ft. .SAT THROUGH SUN...NW wind 15 to 30 kt. Seas 8 to 13 ft. .MON...NE wind up to 20 kt. Seas 8 to 16 ft. $$ PKZ412-240200- Bering Sea Offshore 171W to 180 and North of 56N- 343 AM AKST Thu Nov 23 2017 ...STORM WARNING TODAY... .TODAY...NW wind 35 to 50 kt becoming W 25 to 35 kt in the afternoon. Seas 15 to 30 ft. .TONIGHT...W wind 25 kt. Seas 9 to 17 ft. .FRI...SW wind 25 kt becoming 15 to 30 kt in the afternoon. Seas 10 ft. .FRI NIGHT...S wind 20 to 35 kt. Seas 9 to 13 ft. .SAT THROUGH SUN...N wind 25 to 40 kt. Seas 10 to 18 ft. .MON...N wind 10 to 25 kt. Seas 7 to 12 ft. $$ PKZ413-240200- Bering Sea Offshore 171W to 180 and South of 56N- 343 AM AKST Thu Nov 23 2017 ...GALE WARNING TODAY AND FRIDAY... .TODAY...NW wind 30 to 45 kt becoming W 15 to 30 kt in the afternoon. Seas 14 to 29 ft. .TONIGHT...SW wind 15 to 25 kt. Seas 10 to 18 ft subsiding to 7 to 12 ft after midnight. .FRI...SW wind 15 to 25 kt becoming S 20 to 35 kt in the afternoon. Seas 7 to 11 ft. .FRI NIGHT...S wind 20 to 35 kt. Seas 8 to 13 ft. .SAT THROUGH SUN...NW wind 30 to 45 kt. Seas 13 to 21 ft. .MON...N wind 10 to 25 kt. Seas 8 to 13 ft. $$ PKZ414-240200- Bering Sea Offshore East of 171W- 343 AM AKST Thu Nov 23 2017 ...STORM WARNING TODAY... .TODAY...NW wind 45 to 55 kt diminishing to 35 to 50 kt in the afternoon. Gusts to 75 kt through this morning. Seas 21 to 36 ft. .TONIGHT...NW wind 25 to 40 kt. Seas 14 to 22 ft. .FRI...NW wind 15 to 30 kt. Seas 8 to 13 ft. .FRI NIGHT...S wind 15 to 30 kt. Seas 6 to 10 ft. .SAT...SE wind 20 to 35 kt. Seas 8 to 13 ft. .SUN...NE wind 20 to 35 kt. Seas 9 to 17 ft. .MON...NW wind 15 to 30 kt. Seas 9 to 14 ft. $$
187 FZAK62 PAFC 240034 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 334 PM AKST Thu Nov 23 2017 Offshore Waters Forecast for the Bering Sea Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ499-241400- 334 PM AKST Thu Nov 23 2017 .SYNOPSIS FOR CENTRAL BERING SEA... A 986 mb low at 55N 157W swings across the Northern Pacific through Sat afternoon. High pressure moves to the Eastern Bering by Sat morning. A 977 mb Russian Far East low extends a front over the Bering to a 984 mb low near 56N 171W and a 987 mb low around 50N 178W that form Sat afternoon. $$ PKZ411-241400- Bering Sea Offshore West of 180 and East of the International Dateline- 334 PM AKST Thu Nov 23 2017 ...GALE WARNING FRIDAY AND FRIDAY NIGHT... .TONIGHT...S wind 20 to 30 kt. Seas 8 to 12 ft. .FRI...S wind 35 kt. Seas 9 to 15 ft. Rain. .FRI NIGHT...W wind 20 to 35 kt. Seas 10 to 17 ft. Rain. .SAT...W wind 10 to 25 kt. Seas 8 to 13 ft. .SAT NIGHT...NW wind 10 to 25 kt. Seas 8 ft. .SUN...NW wind 15 to 30 kt. Seas 8 to 13 ft. .MON...NE wind up to 20 kt. Seas 8 to 16 ft. .TUE...NW wind 15 to 25 kt. Seas 13 to 21 ft. $$ PKZ412-241400- Bering Sea Offshore 171W to 180 and North of 56N- 334 PM AKST Thu Nov 23 2017 ...GALE WARNING FRIDAY NIGHT... .TONIGHT...W wind 25 kt. Seas 10 to 17 ft subsiding to 11 ft after midnight. .FRI...SW wind 25 kt becoming 15 to 30 kt in the afternoon. Seas 8 to 11 ft. .FRI NIGHT...S wind 20 to 35 kt. Seas 9 to 14 ft. Rain. .SAT...NW wind 15 to 30 kt. Seas 9 to 15 ft. .SAT NIGHT...N wind 30 to 45 kt. Seas 10 to 18 ft. .SUN...N wind 25 to 40 kt. Seas 13 to 21 ft. .MON THROUGH TUE...N wind 10 to 25 kt. Seas 7 to 12 ft. $$ PKZ413-241400- Bering Sea Offshore 171W to 180 and South of 56N- 334 PM AKST Thu Nov 23 2017 ...GALE WARNING FRIDAY NIGHT... .TONIGHT...SW wind 15 to 25 kt. Seas 10 to 18 ft subsiding to 8 to 12 ft after midnight. .FRI...S wind 15 to 30 kt. Seas 7 to 10 ft. .FRI NIGHT...S wind 20 to 35 kt. Seas 8 to 13 ft. Rain. .SAT...N wind 15 to 30 kt. Seas 7 to 12 ft. .SAT NIGHT...NW wind 30 to 45 kt. Seas 10 to 18 ft. .SUN...NW wind 30 to 45 kt. Seas 14 to 28 ft. .MON THROUGH TUE...N wind 10 to 25 kt. Seas 9 to 17 ft. $$ PKZ414-241400- Bering Sea Offshore East of 171W- 334 PM AKST Thu Nov 23 2017 ...GALE WARNING TONIGHT... .TONIGHT...NW wind 25 to 40 kt. Seas 13 to 21 ft. .FRI...W wind 15 to 30 kt. Seas 8 to 13 ft. .FRI NIGHT...W wind up to 20 kt becoming SE 15 to 30 kt after midnight. Seas 7 to 10 ft. .SAT...SE wind 15 to 30 kt. Seas 6 to 10 ft. .SAT NIGHT...SE wind 25 to 40 kt. Seas 9 to 17 ft. .SUN...NE wind 25 to 40 kt. Seas 11 to 19 ft. .MON...NW wind 15 to 30 kt. Seas 9 to 14 ft. .TUE...NE wind up to 15 kt. Seas 4 to 8 ft. $$
505 FZAK62 PAFC 241235 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 335 AM AKST Fri Nov 24 2017 Offshore Waters Forecast for the Bering Sea Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ499-250215- 335 AM AKST Fri Nov 24 2017 .SYNOPSIS FOR CENTRAL BERING SEA... High pressure over the central Aleutians moves southeast as a front approaches the western Bering Sea Sat morning. A 991 mb North Pacific low moves to 49N 172E by Sat morning then moves to 56N 171W intensifying to 946 mb by Sun morning. $$ PKZ411-250215- Bering Sea Offshore West of 180 and East of the International Dateline- 335 AM AKST Fri Nov 24 2017 ...GALE WARNING THROUGH TONIGHT... .TODAY...S wind 35 kt. Seas 9 to 15 ft. Rain. .TONIGHT...SW wind 20 to 35 kt becoming W 10 to 25 kt after midnight. Seas 10 to 16 ft. .SAT...NW wind 10 to 20 kt becoming N 15 to 30 kt in the afternoon. Seas 8 to 13 ft. .SAT NIGHT...NW wind 20 to 35 kt. Seas 9 to 14 ft. .SUN THROUGH TUE...NW wind 15 to 30 kt. Seas 10 to 18 ft. $$ PKZ412-250215- Bering Sea Offshore 171W to 180 and North of 56N- 335 AM AKST Fri Nov 24 2017 ...GALE WARNING TONIGHT... .TODAY...SW wind 15 to 30 kt. Seas 8 to 11 ft. .TONIGHT...S wind 20 to 35 kt. Seas 9 to 14 ft. Rain showers. .SAT...N wind 15 to 30 kt. Seas 9 to 14 ft. .SAT NIGHT...N wind 30 to 45 kt. Seas 11 to 19 ft. .SUN...N wind 30 to 45 kt. Seas 15 to 23 ft. .MON THROUGH TUE...N wind 15 to 30 kt. Seas 9 to 14 ft. $$ PKZ413-250215- Bering Sea Offshore 171W to 180 and South of 56N- 335 AM AKST Fri Nov 24 2017 ...GALE WARNING TONIGHT... .TODAY...S wind 15 to 30 kt. Seas 7 to 10 ft. .TONIGHT...S wind 20 to 35 kt. Seas 8 to 13 ft. Rain showers. .SAT...NW wind up to 20 kt becoming N 15 to 30 kt in the afternoon. Seas 6 to 11 ft. Rain showers. .SAT NIGHT...NW wind 30 to 45 kt. Seas 11 to 19 ft. .SUN...NW wind 35 to 50 kt. Seas 19 to 34 ft. .MON THROUGH TUE...NW wind 25 to 40 kt. Seas 11 to 19 ft. $$ PKZ414-250215- Bering Sea Offshore East of 171W- 335 AM AKST Fri Nov 24 2017 .TODAY...W wind 15 to 30 kt. Seas 8 to 11 ft. .TONIGHT...W wind 10 to 25 kt becoming S 15 to 30 kt after midnight. Seas 6 to 10 ft. .SAT...SE wind 15 to 30 kt. Seas 7 to 12 ft. Rain. .SAT NIGHT...SE wind 30 to 45 kt. Seas 10 to 18 ft. .SUN...N wind 20 to 35 kt. Seas 14 to 22 ft. .MON...NW wind 20 to 35 kt. Seas 9 to 17 ft. .TUE...NE wind 10 to 25 kt. Seas 6 to 10 ft. $$
676 FZAK62 PAFC 250026 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 326 PM AKST Fri Nov 24 2017 Offshore Waters Forecast for the Bering Sea Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ499-251400- 326 PM AKST Fri Nov 24 2017 .SYNOPSIS FOR CENTRAL BERING SEA... A 975 mb Russian Far East low extends a front over the Bering through Sat morning. The low moves into the Arctic with the trailing front pushing across the Bering for Sun afternoon. A North Pacific low slips along the front to 58N 169W and intensifies to 944 mb by Sun afternoon. $$ PKZ411-251400- Bering Sea Offshore West of 180 and East of the International Dateline- 326 PM AKST Fri Nov 24 2017 ...STORM WARNING SATURDAY NIGHT... .TONIGHT...SW wind 20 to 35 kt becoming NW 10 to 20 kt after midnight. Seas 9 to 17 ft. .SAT...N wind 10 to 25 kt increasing to 30 to 45 kt in the afternoon. Seas 8 to 13 ft. and rain. .SAT NIGHT...NW wind 40 to 55 kt. Seas 13 to 21 ft. .SUN...NW wind 35 to 50 kt. Seas 13 to 27 ft. .SUN NIGHT...NW wind 25 to 40 kt. Seas 15 to 26 ft. .MON THROUGH TUE...NW wind 25 to 40 kt. Seas 14 to 20 ft. .WED...SW wind 15 to 30 kt. Seas 9 to 14 ft. $$ PKZ412-251400- Bering Sea Offshore 171W to 180 and North of 56N- 326 PM AKST Fri Nov 24 2017 ...STORM WARNING SATURDAY NIGHT... .TONIGHT...S wind 15 to 30 kt. Seas 9 to 14 ft. Rain. .SAT...E wind 10 to 25 kt. Seas 8 to 12 ft. Rain. .SAT NIGHT...E wind 20 to 35 kt becoming N 35 to 50 kt after midnight. Seas 10 to 18 ft. Rain. .SUN...N wind 40 to 55 kt. Seas 14 to 29 ft. .SUN NIGHT...NW wind 30 to 45 kt. Seas 16 to 28 ft. .MON THROUGH WED...W wind 25 to 40 kt. Seas 13 to 21 ft. $$ PKZ413-251400- Bering Sea Offshore 171W to 180 and South of 56N- 326 PM AKST Fri Nov 24 2017 ...STORM WARNING SATURDAY NIGHT... .TONIGHT...S wind 20 to 35 kt. Seas 7 to 12 ft. Rain. .SAT...SE wind 10 to 25 kt. Seas 5 to 10 ft. Rain. .SAT NIGHT...W wind 45 to 60 kt. Seas 9 to 14 ft building to 16 to 31 ft after midnight. Rain and snow showers. .SUN...W wind 50 to 65 kt. Seas 27 to 42 ft. .SUN NIGHT...W wind 45 to 60 kt. Seas 26 to 41 ft. .MON THROUGH TUE...W wind 35 to 50 kt. Seas 16 to 30 ft. .WED...W wind 20 to 35 kt. Seas 14 to 22 ft. $$ PKZ414-251400- Bering Sea Offshore East of 171W- 326 PM AKST Fri Nov 24 2017 ...STORM WARNING SATURDAY NIGHT... .TONIGHT...SW wind 15 to 30 kt. Seas 6 to 10 ft. .SAT...SE wind 20 to 35 kt. Seas 7 to 12 ft. Rain and snow. .SAT NIGHT...SE wind 35 to 50 kt. Seas 11 to 19 ft. Rain and snow. .SUN...S wind 35 to 50 kt. Seas 20 to 35 ft. .SUN NIGHT...SW wind 40 to 55 kt. Seas 20 to 35 ft. .MON...W wind 35 to 50 kt. Seas 15 to 30 ft. .TUE THROUGH WED...W wind 20 to 35 kt. Seas 13 to 21 ft. $$
What forecasters said that day
The local office's own words before this gale warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Anchorage, AK wrote its last area forecast discussion before this gale warning went out at Nov 21, 4:42 PM AKST, 11 hours 19 minutes earlier.
Area forecast discussion, Nov 21, 4:42 PM AKST, 11 hours 19 minutes before
Southcentral and Southwest Alaska Forecast Discussion National Weather Service Anchorage AK 442 PM AKST Tue Nov 21 2017 .ANALYSIS AND UPPER LEVELS... Early this afternoon a weak front stretches along a line from just south of Talkeetna to the southern tip of the western Kenai. The upper trough driving this feature is swinging eastward from a parent low over the Chukchi Sea. An upper shortwave ridge is to the east of the trough with nearly zonal flow to its west over the Bering. The next impactful low to monitor is quickly approaching the western Aleutians from the North Pacific. && .MODEL DISCUSSION... Models are generally in good agreement on the synoptic pattern through the short range forecast into early Thursday evening. Good model consistency is noted along the last several runs, therefore only minor updates were needed for the afternoon package. && .AVIATION... PANC...VFR conditions are expected through the TAF package, however there is a chance for brief MVFR to develop along a weak front projected to move across the Anchorage Bowl this evening. Winds will generally be a light northerly flow through Wednesday afternoon. && .SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 through 3)... A weak shortwave trough will continue pushing east across Southcentral this evening bringing a quick shot of snow to most locations on the west side of the Chugach and Kenai Mountains, though no more than an inch of accumulation is expected. The trough weakened considerably as it came over the Alaska Range today and will fall apart even more as it moves over higher terrain to the east, meaning areas along the Prince William Sound and Gulf Coast should see little if any snow from this system. High pressure will build in again behind the departing trough tonight and tomorrow bringing another shot of cold air advection and strengthening northerly gap winds. The orientation of the upper level flow and pressure gradient will favor areas along the coast including Valdez/Thompson Pass, Whittier, and Seward, where winds could gust as high as 35-50 mph peaking tomorrow afternoon. The flow will rapidly shift tomorrow evening as another low over the western part of the state moves in. A front extending from the Eastern Bering across the AKPEN will sweep NE over Kodiak and the Southern Kenai bringing another round of rain and snow to those areas. High pressure over NW Canada will block the low from moving further north and push the center to the south and east over the Gulf, keeping the area mostly dry through the rest of the week. && .SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2)... The forecast period commences with a polar low over the Chukchi Sea with the remnants of the frontal boundary moving into western Alaska. In the wake of the frontal passage, ridging will build into southwest Alaska tonight resulting in a lull between cyclones. Wednesday a mature low will have emerged into the central Bering and the models have converged on a solution that bring this storm to southwest Alaska late this forecast period. Early Thursday the surface low will begin to dive southeastward from Nunivak Island to Bristol Bay. Widespread precipitation and coastal impacts anticipated with this storm. && .SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)... The progressive pattern for the Bering and Aleutians continues. A low that is currently south of Attu Island is progged to rapidly deepen and push north and east. This storm is projected to evolve into a significant storm that will harness a widespread area of cold air advection. The attendant cold front will migrate eastward impacting the Aleutian Chain and the Central Bering. The operational runs of the GFS and the NAM have the surface low deepening more than 20 mb in 24 hrs. Anticipate strong winds, rough seas and wintry precipitation. Early Thursday, the surface low will begin to dive southeastward from Nunivak Island to Bristol Bay. && .LONG TERM FORECAST (Days 3 through 7)... The forecast heading into the weekend will see the exit of a strong low into the Gulf of Alaska and eventually the PAC NW of the lower 48. Friday, winds along the AKPEN should begin to abate and the concerns for gusts reaching warning level will wane. This weekend will see a transient Bering Sea ridge build north of the central Aleutian chain and slowly slide to the east. Low pressure lifting from the western Pacific will drag a front across the Bering and merge with a different area of low pressure Sunday. This will reintroduce precipitation across much of the southwest. However, with strong southerly wind transporting warmth aloft, problems with precipitation type arise during this timeframe. The Friday and through the weekend forecast for southcentral remains pretty basic. Offshore flow will dominate the entire period and skies should become relatively cloud free. Temperatures will slowly drop this weekend with the clearing skies and limited wind overnight. Chances for snow are bleak through at least Monday. Guidance takes a turn come next week and becomes challenging. The long range forecast trended to more of an ensemble weighting as the standard suite of deterministic models provided a wide range of forecast possibilities. && .AFC WATCHES/WARNINGS/ADVISORIES... PUBLIC...CFW and WSW 155 and 161, NPW 181 and 195. MARINE...Storms 165 170 179 180 181 185 411-414. Gales 120 130-132 138 150 155 160 172-178. && SYNOPSIS AND MODEL DISCUSSION...KH SOUTHCENTRAL ALASKA...KVP SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...PS LONG TERM...SS
The office that day
Everything else NWS Anchorage, AK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 21, 3:13 PM AKST | Coastal Flood Advisory | AFC | 29 hr | |
| Nov 21, 3:13 PM AKST | Coastal Flood Advisory | AFC | 45 hr | |
| Nov 21, 3:25 PM AKST | Small Craft Advisory | AFC | 4 days | |
| Nov 21, 3:34 PM AKST | Storm Warning | AFC | 60 hr | |
| Nov 21, 3:37 PM AKST | Storm Warning | AFC | 48 hr | |
| Nov 22, 3:58 AM AKST | Small Craft Advisory | AFC | 12 hr | |
| Nov 22, 4:00 AM AKST | Storm Warning | AFC | 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.