Alert archive / Alaska / Gale Warnings in 2020
Gale Warning 620, NWS Anchorage, AK
NWS Anchorage, AK issued this gale warning at Nov 28, 2020, 3:58 PM AKST. It was in force for 60 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 28, 2020, 3:58 PM AKST (00:58 UTC)
- Expired
- Dec 1, 2020, 4:00 AM AKST
- In force
- 60 hr
- Issued by
- NWS Anchorage, AK
The text
As transmitted.
784 FZAK62 PAFC 290058 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 358 PM AKST Sat Nov 28 2020 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. PKZ499-291430- 358 PM AKST Sat Nov 28 2020 .SYNOPSIS FOR CENTRAL BERING SEA... A 998 mb low at 52N 174W moves into the North Pacific and dissipates by Sun morning. A 965 mb North Pacific low moves to 49N 164W at 962 mb by Mon afternoon. Its front moves just over the Aleutians into the Alaska Peninsula through Mon afternoon. $$ PKZ411-291430- Bering Sea Offshore West of 180 and East of the International Dateline- 358 PM AKST Sat Nov 28 2020 .TONIGHT...NE wind 15 to 30 kt. Seas 9 ft. .SUN...NE wind 20 to 30 kt. Seas 8 to 12 ft. .SUN NIGHT...NE wind 15 to 30 kt. Seas 8 to 13 ft. .MON...NE wind up to 20 kt. Seas 7 to 12 ft. .MON NIGHT...NE wind up to 15 kt. Seas 5 to 9 ft. .TUE THROUGH THU...E wind up to 15 kt. Seas 5 to 8 ft. $$ PKZ412-291430- Bering Sea Offshore 171W to 180 and North of 56N- 358 PM AKST Sat Nov 28 2020 .TONIGHT...N wind 10 to 20 kt. Seas 10 ft. .SUN...NE wind 10 to 20 kt increasing to 25 kt in the afternoon. Seas 9 ft. .SUN NIGHT...NE wind 20 to 30 kt. Seas 7 to 11 ft. .MON...N wind 15 to 30 kt. Seas 7 to 12 ft. .MON NIGHT...N wind 15 to 30 kt. Seas 8 to 13 ft. .TUE THROUGH THU...NE wind 10 to 25 kt. Seas 5 to 10 ft. $$ PKZ413-291430- Bering Sea Offshore 171W to 180 and South of 56N- 358 PM AKST Sat Nov 28 2020 ...GALE WARNING SUNDAY AND SUNDAY NIGHT... .TONIGHT...N to E wind 15 kt. Seas 9 to 12 ft. .SUN...NE wind 20 to 35 kt. Seas 7 to 12 ft. .SUN NIGHT...NE wind 25 to 35 kt. Seas 9 to 16 ft. .MON...N wind 20 to 35 kt. Seas 11 to 17 ft. .MON NIGHT...N wind 15 to 30 kt. Seas 9 to 17 ft. .TUE THROUGH THU...NE wind 10 to 25 kt. Seas 8 to 13 ft. $$ PKZ414-291430- Bering Sea Offshore East of 171W- 358 PM AKST Sat Nov 28 2020 ...GALE WARNING SUNDAY NIGHT... .TONIGHT...NW wind 10 to 25 kt. Seas 11 ft. .SUN...N wind 10 to 20 kt. Seas 8 to 11 ft. .SUN NIGHT...NE wind 20 to 35 kt. Seas 7 to 12 ft. .MON...NE wind 30 to 45 kt. Seas 10 to 18 ft. .MON NIGHT...N wind 30 to 40 kt. Seas 14 to 20 ft. .TUE...N wind 25 to 40 kt. Seas 11 to 19 ft. .WED THROUGH THU...N wind 15 to 25 kt. Seas 7 to 12 ft. $$
5 follow-up statements
404 FZAK62 PAFC 291255 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 355 AM AKST Sun Nov 29 2020 Offshore Waters Forecast for the Bering Sea Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ499-300145- 355 AM AKST Sun Nov 29 2020 .SYNOPSIS FOR CENTRAL BERING SEA... A 959 mb low at 47N 173W moves to 48N 170W at 960 mb by Mon morning and then to 51N 159W at 968 mb by Tue morning. $$ PKZ411-300145- Bering Sea Offshore West of 180 and East of the International Dateline- 355 AM AKST Sun Nov 29 2020 ...GALE WARNING TODAY... .TODAY...NE wind 20 to 35 kt. Seas 8 to 13 ft. .TONIGHT...NE wind 15 to 30 kt. Seas 9 to 14 ft. .MON...N wind 10 to 20 kt. Seas 8 to 13 ft. .MON NIGHT...NE wind 10 kt. Seas 5 to 8 ft. .TUE THROUGH THU...E wind up to 15 kt. Seas 4 to 7 ft. $$ PKZ412-300145- Bering Sea Offshore 171W to 180 and North of 56N- 355 AM AKST Sun Nov 29 2020 .TODAY...NE wind 15 to 25 kt. Seas 9 ft. .TONIGHT...NE wind 20 to 30 kt. Seas 7 to 11 ft. .MON...N wind 15 to 30 kt. Seas 7 to 12 ft. .MON NIGHT...N wind 15 to 30 kt. Seas 7 to 12 ft. .TUE THROUGH THU...NE wind 10 to 25 kt. Seas 5 to 10 ft. $$ PKZ413-300145- Bering Sea Offshore 171W to 180 and South of 56N- 355 AM AKST Sun Nov 29 2020 ...GALE WARNING THROUGH MONDAY... .TODAY...NE wind 20 to 35 kt. Seas 8 to 13 ft. .TONIGHT...NE wind 25 to 40 kt. Seas 10 to 17 ft. .MON...N wind 25 to 40 kt. Seas 11 to 17 ft. .MON NIGHT...N wind 15 to 30 kt. Seas 9 to 14 ft. .TUE THROUGH THU...NE wind up to 20 kt. Seas 6 to 11 ft. $$ PKZ414-300145- Bering Sea Offshore East of 171W- 355 AM AKST Sun Nov 29 2020 ...GALE WARNING TONIGHT AND MONDAY... .TODAY...N wind 10 to 25 kt. Seas 9 ft. .TONIGHT...NE wind 20 to 35 kt. Seas 7 to 12 ft. .MON...NE wind 30 to 40 kt. Seas 10 to 18 ft. Freezing spray. .MON NIGHT...N wind 30 to 45 kt. Seas 13 to 19 ft. .TUE THROUGH THU...N wind 20 to 35 kt. Seas 8 to 13 ft. $$
978 FZAK62 PAFC 300038 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 338 PM AKST Sun Nov 29 2020 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. PKZ499-301430- 338 PM AKST Sun Nov 29 2020 .SYNOPSIS FOR CENTRAL BERING SEA... A 959 mb low at 47N 178W moves to 55N 155W at 972 mb by Tue afternoon. Its front moves over the Aleutians into Southwest Alaska for Tue afternoon. A 1005 mb Kamchatka low moves to become a 989 mb low complex near 52N 171E by Tue afternoon. Its front moves over the Western Aleutians through Tue afternoon. $$ PKZ411-301430- Bering Sea Offshore West of 180 and East of the International Dateline- 338 PM AKST Sun Nov 29 2020 .TONIGHT...NE wind 15 to 30 kt. Seas 8 to 13 ft. .MON...N wind 10 to 20 kt. Seas 8 to 13 ft. .MON NIGHT...NE wind 10 kt. Seas 7 ft. .TUE...SE wind up to 15 kt. Seas 4 to 7 ft. .TUE NIGHT...E wind up to 15 kt. Seas 5 ft. .WED THROUGH FRI...E wind up to 20 kt. Seas 4 to 8 ft. $$ PKZ412-301430- Bering Sea Offshore 171W to 180 and North of 56N- 338 PM AKST Sun Nov 29 2020 .TONIGHT...NE wind 20 to 30 kt. Seas 7 to 10 ft. .MON...N wind 15 to 30 kt. Seas 7 to 12 ft. .MON NIGHT...N wind 15 to 30 kt. Seas 6 to 11 ft. .TUE...N wind 10 to 25 kt. Seas 5 to 10 ft. .TUE NIGHT...NE wind up to 15 kt. Seas 4 to 9 ft. .WED THROUGH FRI...NE wind up to 20 kt. Seas 5 ft. $$ PKZ413-301430- Bering Sea Offshore 171W to 180 and South of 56N- 338 PM AKST Sun Nov 29 2020 ...GALE WARNING THROUGH MONDAY... .TONIGHT...NE wind 25 to 40 kt. Seas 10 to 17 ft. .MON...N wind 25 to 40 kt. Seas 11 to 17 ft. .MON NIGHT...N wind 15 to 30 kt. Seas 9 to 14 ft. .TUE...NE wind up to 20 kt. Seas 7 to 11 ft. .TUE NIGHT...NE wind up to 15 kt. Seas 6 to 9 ft. .WED THROUGH FRI...E wind up to 20 kt. Seas 5 to 8 ft. $$ PKZ414-301430- Bering Sea Offshore East of 171W- 338 PM AKST Sun Nov 29 2020 ...GALE WARNING THROUGH MONDAY NIGHT... .TONIGHT...NE wind 20 to 35 kt. Seas 6 to 11 ft. Freezing spray north of 57N. .MON...N wind 30 to 40 kt. Seas 10 to 18 ft. Freezing spray north of 57N in the morning. .MON NIGHT...N wind 25 to 40 kt. Seas 12 to 18 ft. Freezing spray. .TUE...N wind 20 to 35 kt. Seas 10 to 15 ft. .TUE NIGHT...N wind 15 to 30 kt. Seas 8 to 13 ft. .WED THROUGH FRI...N wind 10 to 25 kt. Seas 6 to 11 ft. $$
089 FZAK62 PAFC 301222 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 322 AM AKST Mon Nov 30 2020 Offshore Waters Forecast for the Bering Sea Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ499-010200- 322 AM AKST Mon Nov 30 2020 .SYNOPSIS FOR CENTRAL BERING SEA... A 960 mb low at 48N 170W moves inland near 58N 157W at 962 mb by Tue morning. The associated front weakens through Wed morning. A 992 mb low at 53N 170E Tue morning moves to 52N 176E at 990 mb by Mon morning. $$ PKZ411-010200- Bering Sea Offshore West of 180 and East of the International Dateline- 322 AM AKST Mon Nov 30 2020 .TODAY...N wind 10 to 20 kt. Seas 8 to 13 ft. .TONIGHT...NE wind 10 kt. Seas 7 ft. .TUE...SE wind 10 to 15 kt. Seas 5 ft. .TUE NIGHT...SE wind up to 15 kt. Seas 5 ft. .WED THROUGH THU...E wind 10 to 20 kt. Seas 4 to 7 ft. .FRI...NE wind up to 20 kt. Seas 5 to 10 ft. $$ PKZ412-010200- Bering Sea Offshore 171W to 180 and North of 56N- 322 AM AKST Mon Nov 30 2020 .TODAY...N wind 15 to 30 kt. Seas 7 to 11 ft. .TONIGHT...N wind 10 to 25 kt. Seas 6 to 10 ft. .TUE...N wind 10 to 20 kt. Seas 5 to 9 ft. .TUE NIGHT...NE wind up to 15 kt. Seas 4 to 7 ft. .WED THROUGH THU...E wind up to 20 kt. Seas 3 to 7 ft. .FRI...NE wind 20 to 30 kt. Seas 8 to 13 ft. $$ PKZ413-010200- Bering Sea Offshore 171W to 180 and South of 56N- 322 AM AKST Mon Nov 30 2020 ...GALE WARNING TODAY... .TODAY...N wind 20 to 35 kt. Seas 10 to 16 ft. .TONIGHT...N wind 15 to 30 kt. Seas 8 to 13 ft. .TUE...NE wind 10 to 20 kt. Seas 6 to 10 ft. .TUE NIGHT...E wind up to 15 kt. Seas 5 to 8 ft. .WED THROUGH FRI...NE wind 10 to 25 kt. Seas 5 to 10 ft. $$ PKZ414-010200- Bering Sea Offshore East of 171W- 322 AM AKST Mon Nov 30 2020 ...GALE WARNING THROUGH TONIGHT... .TODAY...N wind 25 to 40 kt. Seas 9 to 16 ft. Freezing spray. .TONIGHT...N wind 25 to 40 kt. Seas 11 to 17 ft. Freezing spray. .TUE...N wind 15 to 30 kt. Seas 9 to 14 ft. Freezing spray. .TUE NIGHT...N wind 15 to 30 kt. Seas 7 to 11 ft. .WED...N wind up to 20 kt. Seas 3 to 8 ft. .THU THROUGH FRI...E wind 15 to 30 kt. Seas 6 to 11 ft. $$
451 FZAK62 PAFC 010037 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 337 PM AKST Mon Nov 30 2020 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. PKZ499-011500- 337 PM AKST Mon Nov 30 2020 .SYNOPSIS FOR CENTRAL BERING SEA... A 962 mb low at 49N 163W moves into the Western Gulf of Alaska for Wed morning then inland. Its front extends across the Gulf and trails into the North Pacific through Wed afternoon. A 998 mb low at 53N 166E becomes a 985 mb low complex near 50N 178W with its front over the Western Aleutians through Wed afternoon. $$ PKZ411-011500- Bering Sea Offshore West of 180 and East of the International Dateline- 337 PM AKST Mon Nov 30 2020 .TONIGHT...Variable wind 10 kt. Seas 7 ft. .TUE...SE wind 10 to 15 kt. Seas 3 to 6 ft. .TUE NIGHT...SE wind 10 to 15 kt. Seas 3 to 6 ft. .WED...E wind up to 20 kt. Seas 5 ft. .WED NIGHT...E wind 10 to 20 kt. Seas 4 to 7 ft. .THU...E wind 10 to 20 kt. Seas 6 ft. .FRI...NE wind up to 20 kt. Seas 5 to 10 ft. .SAT...N wind 10 to 20 kt. Seas 8 to 13 ft. $$ PKZ412-011500- Bering Sea Offshore 171W to 180 and North of 56N- 337 PM AKST Mon Nov 30 2020 .TONIGHT...N wind 10 to 25 kt. Seas 6 to 10 ft. .TUE...N wind 10 to 20 kt. Seas 5 to 9 ft. .TUE NIGHT...NE wind 10 to 15 kt becoming SE after midnight. Seas 4 to 8 ft. .WED...E wind up to 15 kt. Seas 3 to 6 ft. .WED NIGHT...E wind up to 20 kt. Seas 3 to 5 ft. .THU...E wind up to 20 kt. Seas 3 to 7 ft. .FRI THROUGH SAT...NE wind 20 to 30 kt. Seas 9 to 17 ft. $$ PKZ413-011500- Bering Sea Offshore 171W to 180 and South of 56N- 337 PM AKST Mon Nov 30 2020 .TONIGHT...N wind 15 to 30 kt. Seas 8 to 13 ft. .TUE...NE wind 10 to 20 kt. Seas 6 to 9 ft. .TUE NIGHT...E wind 10 to 15 kt. Seas 5 to 8 ft. .WED...E wind up to 20 kt. Seas 6 ft. .WED NIGHT...E wind 10 to 25 kt. Seas 4 to 8 ft. .THU THROUGH SAT...NE wind 10 to 25 kt. Seas 8 to 13 ft. $$ PKZ414-011500- Bering Sea Offshore East of 171W- 337 PM AKST Mon Nov 30 2020 ...GALE WARNING TONIGHT... .TONIGHT...N wind 25 to 40 kt. Seas 11 to 16 ft. Freezing spray. .TUE...N wind 15 to 30 kt. Seas 9 to 14 ft. Freezing spray. .TUE NIGHT...N wind 15 to 30 kt. Seas 7 to 12 ft. Freezing spray. .WED...N wind up to 20 kt. Seas 4 to 7 ft. .WED NIGHT...NE wind up to 15 kt. Seas 3 to 6 ft. .THU THROUGH SAT...NE wind 15 to 30 kt. Seas 7 to 12 ft. $$
263 FZAK62 PAFC 011300 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 400 AM AKST Tue Dec 1 2020 Offshore Waters Forecast for the Bering Sea Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ499-020145- 400 AM AKST Tue Dec 1 2020 .SYNOPSIS FOR CENTRAL BERING SEA... A front over the eastern Bering moves east over the mainland Tue night. A 990 mb low forms at 51N 171E Tue night and moves to 50N 174W at 984 mb Wed night. $$ PKZ411-020145- Bering Sea Offshore West of 180 and East of the International Dateline- 400 AM AKST Tue Dec 1 2020 .TODAY...SE wind 10 to 15 kt. Seas 6 ft. .TONIGHT...SE wind 10 to 20 kt. Seas 5 ft. .WED...E wind 10 to 20 kt. Seas 5 ft. .WED NIGHT...E wind up to 20 kt. Seas 6 ft. .THU...SE wind 10 to 25 kt. Seas 5 to 8 ft. .FRI THROUGH SAT...N wind 10 to 25 kt. Seas 6 to 11 ft. $$ PKZ412-020145- Bering Sea Offshore 171W to 180 and North of 56N- 400 AM AKST Tue Dec 1 2020 .TODAY...N wind 10 to 20 kt. Seas 5 to 9 ft. .TONIGHT...N wind 10 to 15 kt becoming E. Seas 4 to 8 ft. .WED...E wind 10 to 15 kt. Seas 5 ft. .WED NIGHT...SE wind up to 20 kt. Seas 4 ft. .THU THROUGH SAT...NE wind 15 to 30 kt. Seas 7 to 12 ft. $$ PKZ413-020145- Bering Sea Offshore 171W to 180 and South of 56N- 400 AM AKST Tue Dec 1 2020 .TODAY...N wind 10 to 20 kt becoming E in the afternoon. Seas 8 ft. .TONIGHT...E wind 10 to 20 kt. Seas 7 ft. .WED...E wind 10 to 20 kt. Seas 6 ft. .WED NIGHT...E wind 15 to 25 kt. Seas 6 ft. .THU THROUGH SAT...NE wind 15 to 30 kt. Seas 8 to 13 ft. $$ PKZ414-020145- Bering Sea Offshore East of 171W- 400 AM AKST Tue Dec 1 2020 .TODAY...N wind 15 to 30 kt. Seas 9 to 13 ft. Freezing spray. .TONIGHT...N wind 15 to 30 kt. Seas 7 to 12 ft. Freezing spray. .WED...N wind 10 to 20 kt. Seas 7 ft. Freezing spray. .WED NIGHT...NE wind up to 15 kt. Seas 5 ft. .THU THROUGH SAT...NE wind 15 to 30 kt. Seas 5 to 10 ft. $$
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 28, 5:41 AM AKST, 10 hours 17 minutes earlier.
Area forecast discussion, Nov 28, 5:41 AM AKST, 10 hours 17 minutes before
Southcentral and Southwest Alaska Forecast Discussion National Weather Service Anchorage AK 541 AM AKST Sat Nov 28 2020 .ANALYSIS AND UPPER LEVELS... The upper level jet extends from the Kamchatka Peninsula to Southeast Alaska with the main jet core to the south of the Aleutian Chain. This pattern is anchored by two occluded lows that are readily apparent on satellite, one to the south of the AKPEN and the second over the western Bering. The western low has lost most of its upper level support and baroclinic energy and is expected to weaken as it moves south into the north Pacific. The much stronger eastern low that brought hurricane force gusts to Nikolski yesterday will be the primary area of focus for todays forecast package. The deformation band from the primary low continues to bring gusty winds and snow to Bristol Bay and the Kilbuck Mountains. On the backside of the low, cold northerly winds are funneling through the western AKPEN, producing snow showers tin areas like Cold Bay. The occluded front just off the coast of Southcentral this morning can be seen on both the Kenai and Middleton Island radars. With the east-southeast orientation of the front, the western Kenai, Anchorage Bowl and Mat-Su Valleys have remained downsloped as of this morning. At the surface, winds have been increasing through Portage Valley through the overnight hours with a peak gust of 60 kts this morning along with reduced visibility and snow. && .MODEL DISCUSSION... Models have come to pretty good agreement in regards to the front over the Gulf coast today. Discontinuities become apparent this evening in regards to the low track moving north over the Gulf Coast. After 36 hours guidance indicates either a broad region of low pressure from Kodiak to Cordova or two low centers over the northern Gulf. Minor differences in these solutions will result in precipitation differences across Southcentral that will need refinement in future forecast packages. && .AVIATION... PANC...VFR conditions will persist. A few light snow showers are possible throughout the day that may temporarily lower ceilings to MVFR; however, these are expected to be short lived. && .SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2: Today through Sunday Night)... A large area of low pressure over the southwestern Gulf south of Kodiak Island is the primary weather maker around Southcentral this morning. It's associated leading front is currently moving into the north Gulf Coast, causing the active weather over the area. Blowing snow conditions have been occurring over Turnagain Pass and Portage Valley, where a Winter Weather Advisory for blowing snow remains in effect until 9am this morning. Barrier jet winds are impacting the north Gulf Coast into Prince William Sound as well, producing storm force winds. No other hazards are actively in effect. Some of the moisture from the front is trying to infiltrate westward across the mountains, but most of that moisture is evaporating before it reaches the ground as virga. The front will weaken through the day today, but southerly onshore flow across the Gulf will keep the upslope component continuing to wring out mountain snows and valley rain or a mix of the two near the coast. The center of the low itself will move into the northern Gulf this evening, then will track into Prince William Sound tonight. This will enhance snowfall rates in the coastal mountains, including Thompson Pass. There is some discrepancy on the track of the low by Sunday morning, as most of the model solutions have a secondary low forming over southern Cook Inlet, and absorbing most of the energy from the first low. This scenario would help to keep Anchorage, the Mat-Su, and western Kenai Peninsula dry. Meanwhile, the snow will be steady along the coast and through the mountains. This includes the Seward Highway. The center of the low centered relatively close by south of Seward Sunday morning should help to keep the winds much lower across the eastern Kenai Peninsula by Sunday morning, so the blowing snow threat will decrease with time, despite the continuing falling snow. Forecast uncertainty increases by Sunday night as the guidance struggles on where this new low slowly tracks. While the general direction will be eastward back towards the Middleton Island area by Sunday night, another option includes the low opening up into a trough over Prince William Sound. This second solution would keep the snow ongoing in all of the surrounding mountains until full dissipation Monday morning. For inland locations, most of this weekend is looking dry, as any Gulf moisture making it inland will struggle to produce much snow. That said, isolated snow showers can't be ruled out for Anchorage, the Mat-Su, and Western Kenai Peninsula. Somewhat better chances of precipitation are in the forecast for the Copper River Basin, mainly from Glennallen south, as the southerly onshore flow associated with the aforementioned Gulf low should be more successful and getting more moisture inland in that area. Chances are lower in the Cook Inlet region as a dry offshore flow is expected to be predominant. Temperature-wise, most of the area will stay at or above normal this weekend, though Sunday night into Monday could offer a brief return to colder, more normal temperatures. This will be brief, however, because the next low in this parade of storms looks to bring much warmer conditions and rain chances to much of Southcentral next week. && .SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 through 3)... A cold but generally benign weather pattern is expected for Southwest Alaska over the next 3 days. Current radar imagery and observations show snow and blowing snow reducing visibilities in Bristol Bay as a low pressure system continues moving northeastward along the AKPEN. Snow should gradually taper off this morning and allow visibility to improve, thus the Winter Weather Advisory is set to expire at 9am AKST. Conditions will become colder and drier as brisk northeasterly flow will bring in continental polar air from the Alaskan interior Sunday and Monday. Patchy fog is expected along the coast of the Kuskokwim Delta and Bristol Bay Saturday night as MOS guidance shows little to no dewpoint depression for various locations along the Southwest coast. && .SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 through 3)... A fairly active weather pattern is expected to continue over the next 3 days. Winds are gradually decreasing while seas are gradually abating today as the storm system that has transited through the Bering/Aleutians over the past couple of days exits the region into the Gulf of Alaska. However, the break in the action will be short-lived as a second storm system moves eastward across the North Pacific. There is high confidence the center of this storm system will remain well to the south of the Aleutian chain, though the northern edge of this storm system will produce storm force winds across the Aleutians Saturday night through Monday afternoon. The western Aleutians will experience these storm force winds first, as this low moves eastward winds will gradually strengthen over the eastern Aleutians and weaken across the western Aleutians. A GFS/NAM blend was the preferred solution with the NAM being favored for the position of the storm center while the GFS was favored for the intensity forecast. Over the past couple of weeks the GFS and NAM have outperformed the rest of guidance in these respective areas with the NAM having the best handle on the position of synoptic scale features and the GFS having the best handle on the intensity of these synoptic scale features. High seas of 20-30ft are expected along the Pacific side of the Aleutian chain of the western and central Aleutians Sunday afternoon through Monday afternoon, these seas will gradually abate thereafter. && .MARINE (Days 3 through 5/Monday through Wednesday)... Gulf: A weak low lingers in the Northern Gulf through Monday afternoon before moving onshore and dissipating. On Tuesday, a series of shortwaves troughs move across the Gulf towards the North Gulf Coast as a second weakening low approaches Kodiak Island from the south. Winds will be primarily southeasterly on Monday, transitioning to southerly by Tuesday afternoon as the low moves north. Storm force winds may result as the front pushes the North Gulf Coast, with a barrier jet likely to set up late Monday night. Winds should begin to dissipate by Tuesday evening. Bering: A strong North Pacific low pushes towards the western Gulf over the course of a few days. This results in widespread gales across the Southern Bering and possible storm force winds along the central/eastern Aleutian coasts Monday into Tuesday. On Tuesday the low is positioned further east and lingering gales and small craft winds will be confined to the Southwest coastal waters. Additionally, flow will be primarily northerly on Tuesday with colder air being advected along the coast, thus, freezing spray is likely, with heavy freezing spray possible along parts of the immediate coast. High pressure sets up over the Central Bering Tuesday afternoon. && .LONG TERM FORECAST (Days 4 through 7/Tuesday through Friday)... A strong front pushes the Southcentral Coast late Monday night. With this, widespread precipitation is likely, with the heaviest along Western Prince William Sound and Eastern Kenai. Further inland, snow is likely through Wednesday morning before becoming a rain/snow mix in the lower elevation. Significant warm air follows this front, thus, precipitation along the coast should start as a snow or rain/snow mix Tuesday morning and transition to all rain by Tuesday afternoon. Rain will likely linger through Thursday as a second low pushes the coast from the Southern Gulf. Precipition transition back to snow by Friday with colder air behind the low. && .AFC WATCHES/WARNINGS/ADVISORIES... PUBLIC...Winter Weather Advisory 125, 161. MARINE... Storm Warning 119 172 174 177-178 411. Gale Warning 125 128-130 123 139-140 150 155 160 165 170 173 175-176 180-181 351-352 413-414. Heaving Freezing Spray 160 180 181. FIRE WEATHER...NONE. && SYNOPSIS AND MODEL DISCUSSION...CJ SOUTHCENTRAL ALASKA...JPW SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...ED MARINE/LONG TERM...KM
The office that day
Everything else NWS Anchorage, AK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 28, 3:55 PM AKST | Small Craft Advisory | AFC | 12 hr | |
| Nov 28, 4:01 PM AKST | Gale Warning | AFC | 60 hr | |
| Nov 28, 4:01 PM AKST | Small Craft Advisory | AFC | 12 hr | |
| Nov 28, 4:01 PM AKST | Storm Warning | AFC | 24 hr | |
| Nov 29, 3:50 AM AKST | Storm Warning | AFC | 48 hr | |
| Nov 29, 3:54 AM AKST | Gale Warning | AFC | 48 hr | |
| Nov 29, 3:54 AM AKST | Small Craft Advisory | AFC | 36 hr | |
| Nov 29, 3:54 AM AKST | Storm Warning | AFC | 48 hr | |
| Nov 29, 3:55 AM AKST | Gale Warning | AFC | 12 hr | |
| Nov 29, 4:04 AM AKST | Gale Warning | AFC | 48 hr | |
| Nov 29, 4:04 AM AKST | Storm Warning | AFC | 12 hr | |
| Nov 29, 4:04 AM AKST | Heavy Freezing Spray 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.