Alert archive / Alaska / Storm Warnings in 2023
Storm Warning 69, NWS Anchorage, AK
NWS Anchorage, AK issued this storm warning at Mar 23, 2023, 4:00 AM AKDT. It was in force for 47 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 23, 2023, 4:00 AM AKDT (12:00 UTC)
- Expired
- Mar 25, 2023, 3:24 AM AKDT
- In force
- 47 hr
- Issued by
- NWS Anchorage, AK
The text
As transmitted.
575 FZAK62 PAFC 231200 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 400 AM AKDT Thu Mar 23 2023 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. PKZ499-240045- 400 AM AKDT Thu Mar 23 2023 .SYNOPSIS FOR CENTRAL BERING SEA... A 1000 mb low at 60N 172W moves inland Thu evening. Its front moves across the Central Bering for Thu night. A front extends off a Kamchatka low into the western Bering Fri afternoon. $$ PKZ411-240045- Bering Sea Offshore West of 180 and East of the International Dateline- 400 AM AKDT Thu Mar 23 2023 ...STORM WARNING FRIDAY... ...HEAVY FREEZING SPRAY WARNING TODAY... .TODAY...NW wind 15 to 30 kt becoming W up to 20 kt in the afternoon. Seas 6 to 11 ft. Heavy freezing spray N of 57N in the morning. .TONIGHT...SW wind 10 to 25 kt. Seas 5 to 8 ft. .FRI...S wind 20 to 35 kt increasing to 35 to 50 kt in the afternoon. Seas 6 to 11 ft building to 9 to 17 ft in the afternoon. .FRI NIGHT...S wind 35 to 50 kt. Seas 16 to 24 ft. .SAT...SW wind 25 to 40 kt. Seas 15 to 23 ft. .SUN THROUGH MON...S wind 15 to 25 kt. Seas 9 to 17 ft. $$ PKZ412-240045- Bering Sea Offshore 171W to 180 and North of 56N- 400 AM AKDT Thu Mar 23 2023 .TODAY...W wind 15 to 30 kt. Seas 9 to 13 ft. Freezing spray. .TONIGHT...W wind 10 to 25 kt. Seas 7 to 12 ft. Freezing spray N of 57N. .FRI...S wind 15 to 30 kt. Seas 6 to 10 ft. .FRI NIGHT...S wind 30 to 45 kt. Seas 10 to 18 ft. .SAT THROUGH SUN...SW wind 25 to 40 kt. Seas 12 to 20 ft. .MON...SW wind 15 to 25 kt. Seas 10 ft. $$ PKZ413-240045- Bering Sea Offshore 171W to 180 and South of 56N- 400 AM AKDT Thu Mar 23 2023 .TODAY...W wind 10 to 25 kt. Seas 7 to 11 ft. .TONIGHT...SW wind 10 to 20 kt. Seas 8 ft. .FRI...SW wind 15 to 30 kt. Seas 7 to 10 ft. .FRI NIGHT...S wind 25 to 40 kt. Seas 9 to 14 ft. .SAT THROUGH SUN...SW wind 25 to 40 kt. Seas 9 to 17 ft. .MON...SW wind 10 to 20 kt. Seas 8 ft. $$ PKZ414-240045- Bering Sea Offshore East of 171W- 400 AM AKDT Thu Mar 23 2023 .TODAY...SW wind 15 to 30 kt. Seas 7 to 12 ft. Snow. .TONIGHT...W wind 10 to 25 kt. Seas 8 to 11 ft. Freezing spray N of 57N. .FRI...SW wind 10 to 20 kt. Seas 4 to 7 ft. .FRI NIGHT...S wind 15 to 30 kt. Seas 4 to 8 ft. .SAT THROUGH SUN...S wind 25 to 40 kt. Seas 8 to 16 ft. .MON...W wind 10 to 20 kt. Seas 4 to 8 ft. $$
5 follow-up statements
105 FZAK62 PAFC 232336 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 336 PM AKDT Thu Mar 23 2023 Offshore Waters Forecast for the Bering Sea Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ499-241330- 336 PM AKDT Thu Mar 23 2023 .SYNOPSIS FOR CENTRAL BERING SEA... A 990 mb Sea of Okhotsk low moves to the North Kamchatka Coast at 957 mb Sat morning, then into the Chukotsk Peninsula at 976 mb for Sat afternoon. Its front extends across the Bering and moves to the Bering Strait, while the trailing front moves into the Western Aleutians by Sat afternoon. $$ PKZ411-241330- Bering Sea Offshore West of 180 and East of the International Dateline- 336 PM AKDT Thu Mar 23 2023 ...STORM WARNING FRIDAY NIGHT... .TONIGHT...SW wind 10 to 25 kt. Seas 5 to 8 ft. Freezing spray. .FRI...S wind 20 to 30 kt increasing to 30 to 45 kt in the afternoon. Seas 6 to 11 ft building to 9 to 17 ft in the afternoon. Freezing spray in the morning. Snow. .FRI NIGHT...S wind 35 to 50 kt. Seas 15 to 25 ft. Rain and snow. .SAT...SW wind 20 to 35 kt. Seas 15 to 23 ft. .SAT NIGHT...SW wind 15 to 30 kt. Seas 14 to 22 ft. .SUN THROUGH MON...S wind 15 to 25 kt. Seas 9 to 17 ft. .TUE...SE wind 20 to 35 kt. Seas 8 ft. $$ PKZ412-241330- Bering Sea Offshore 171W to 180 and North of 56N- 336 PM AKDT Thu Mar 23 2023 ...GALE WARNING FRIDAY NIGHT... .TONIGHT...W wind 10 to 25 kt. Seas 6 to 11 ft. Freezing spray. .FRI...S wind 15 to 30 kt. Seas 5 to 10 ft. Freezing spray in the morning. .FRI NIGHT...S wind 30 to 45 kt. Seas 11 to 19 ft. Rain. .SAT...S wind 25 to 40 kt. Seas 14 to 22 ft. .SAT NIGHT...SW wind 15 to 30 kt. Seas 14 to 18 ft. .SUN THROUGH MON...SW wind 15 to 30 kt. Seas 10 to 17 ft. .TUE...SE wind 15 to 30 kt. Seas 8 ft. $$ PKZ413-241330- Bering Sea Offshore 171W to 180 and South of 56N- 336 PM AKDT Thu Mar 23 2023 ...GALE WARNING FRIDAY NIGHT... .TONIGHT...SW wind 10 to 20 kt. Seas 8 ft. .FRI...SW wind 20 to 30 kt. Seas 7 to 10 ft. .FRI NIGHT...S wind 25 to 40 kt. Seas 9 to 17 ft. Rain. .SAT...S wind 20 to 35 kt. Seas 11 to 18 ft. .SAT NIGHT...SW wind 20 to 35 kt. Seas 10 to 16 ft. .SUN...SW wind 20 to 35 kt. Seas 9 to 16 ft. .MON...SW wind 10 to 20 kt. Seas 8 ft. .TUE...SE wind 20 to 35 kt. Seas 7 ft. $$ PKZ414-241330- Bering Sea Offshore East of 171W- 336 PM AKDT Thu Mar 23 2023 .TONIGHT...W wind 10 to 25 kt. Seas 8 to 11 ft. Freezing spray. .FRI...SW wind 10 to 20 kt. Seas 5 to 8 ft. .FRI NIGHT...SW wind 20 kt becoming S 20 to 30 kt after midnight. Seas 5 to 8 ft. .SAT...S wind 20 to 35 kt. Seas 8 to 13 ft. .SAT NIGHT...S wind 25 to 35 kt. Seas 8 to 16 ft. .SUN...S wind 20 to 35 kt. Seas 9 to 16 ft. .MON...W wind 10 to 20 kt. Seas 4 to 8 ft. .TUE...SE wind up to 20 kt. Seas 4 to 8 ft. $$
550 FZAK62 PAFC 241141 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 341 AM AKDT Fri Mar 24 2023 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. PKZ499-250145- 341 AM AKDT Fri Mar 24 2023 .SYNOPSIS FOR CENTRAL BERING SEA... A 990 mb Sea of Okhotsk low moves to the north Kamchatka Coast at 957 mb Sat morning, then into the Chukotsk Peninsula at 976 mb for Sat afternoon. Its front extends across the Bering and swings to the Bering Strait, while the trailing front moves into the Western Aleutians by Sat morning. $$ PKZ411-250145- Bering Sea Offshore West of 180 and East of the International Dateline- 341 AM AKDT Fri Mar 24 2023 ...STORM WARNING TONIGHT... .TODAY...S wind 20 to 35 kt increasing to 30 to 45 kt in the afternoon. Seas 6 to 11 ft building to 9 to 17 ft in the afternoon. .TONIGHT...S wind 35 to 50 kt. Seas 15 to 25 ft. Rain and snow. .SAT...SW wind 25 to 35 kt. Seas 16 to 24 ft. .SAT NIGHT...SW wind 20 to 30 kt. Seas 15 to 21 ft. .SUN...W wind 15 to 30 kt. Seas 10 to 18 ft. .MON THROUGH TUE...S wind 15 to 30 kt. Seas 10 to 18 ft. $$ PKZ412-250145- Bering Sea Offshore 171W to 180 and North of 56N- 341 AM AKDT Fri Mar 24 2023 ...GALE WARNING TONIGHT AND SATURDAY... .TODAY...S wind 15 to 30 kt. Seas 6 to 10 ft. .TONIGHT...S wind 30 to 45 kt. Seas 11 to 19 ft. Rain and snow. .SAT...S wind 25 to 40 kt. Seas 14 to 22 ft. Rain and snow. .SAT NIGHT...SW wind 15 to 30 kt. Seas 14 to 20 ft. .SUN THROUGH MON...W wind 15 to 30 kt. Seas 9 to 17 ft. .TUE...SE wind 20 to 30 kt. Seas 9 to 14 ft. $$ PKZ413-250145- Bering Sea Offshore 171W to 180 and South of 56N- 341 AM AKDT Fri Mar 24 2023 ...GALE WARNING TONIGHT AND SATURDAY... .TODAY...SW wind 20 to 30 kt. Seas 7 to 10 ft. .TONIGHT...S wind 25 to 40 kt. Seas 9 to 17 ft. Rain. .SAT...S wind 20 to 35 kt. Seas 12 to 17 ft. Rain. .SAT NIGHT...SW wind 15 to 30 kt. Seas 10 to 16 ft. .SUN THROUGH MON...W wind 10 to 25 kt. Seas 8 to 13 ft. .TUE...S wind 15 to 30 kt. Seas 9 to 17 ft. $$ PKZ414-250145- Bering Sea Offshore East of 171W- 341 AM AKDT Fri Mar 24 2023 ...GALE WARNING SATURDAY... .TODAY...SW wind 10 to 20 kt. Seas 5 to 8 ft. .TONIGHT...S wind 15 to 30 kt. Seas 7 ft. .SAT...S wind 25 to 40 kt. Seas 8 to 13 ft. .SAT NIGHT...S wind 20 to 35 kt. Seas 10 to 17 ft. .SUN...SW wind 20 to 35 kt. Seas 9 to 14 ft. .MON...W wind 10 to 25 kt. Seas 6 to 11 ft. .TUE...SE wind 10 to 25 kt. Seas 4 to 7 ft. $$
795 FZAK62 PAFC 242337 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 337 PM AKDT Fri Mar 24 2023 Offshore Waters Forecast for the Bering Sea Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ499-251315- 337 PM AKDT Fri Mar 24 2023 .SYNOPSIS FOR CENTRAL BERING SEA... A 996 mb low at 56N 166E moves into the Russian Arctic at 978 mb by Sun afternoon. Its front extends across the Central Bering and moves to the Chukchi Sea for Sat afternoon, while the trailing front slides over the Central Aleutians through Sun afternoon. $$ PKZ411-251315- Bering Sea Offshore West of 180 and East of the International Dateline- 337 PM AKDT Fri Mar 24 2023 ...STORM WARNING TONIGHT... .TONIGHT...S wind 35 to 50 kt. Seas 15 to 25 ft. Rain. .SAT...SW wind 25 to 35 kt. Seas 16 to 24 ft. .SAT NIGHT...SW wind 20 to 30 kt. Seas 14 to 21 ft. .SUN...W wind 30 kt. Seas 13 to 17 ft. .SUN NIGHT...W wind 15 to 30 kt. Seas 10 to 15 ft. .MON THROUGH TUE...S wind 15 to 30 kt. Seas 10 to 18 ft. .WED...SW wind 25 kt. Seas 8 to 13 ft. $$ PKZ412-251315- Bering Sea Offshore 171W to 180 and North of 56N- 337 PM AKDT Fri Mar 24 2023 ...GALE WARNING THROUGH SATURDAY... .TONIGHT...S wind 30 to 45 kt. Seas 11 to 19 ft. Rain. .SAT...S wind 25 to 40 kt. Seas 14 to 22 ft. Rain. .SAT NIGHT...SW wind 15 to 30 kt. Seas 14 to 19 ft. .SUN...SW wind 15 to 25 kt. Seas 14 to 18 ft. .SUN NIGHT...W wind 20 to 30 kt. Seas 12 to 15 ft. .MON...W wind 15 to 30 kt. Seas 8 to 13 ft. .TUE...SE wind 20 to 30 kt. Seas 9 to 14 ft. .WED...SW wind 25 kt. Seas 6 to 11 ft. $$ PKZ413-251315- Bering Sea Offshore 171W to 180 and South of 56N- 337 PM AKDT Fri Mar 24 2023 ...GALE WARNING THROUGH SATURDAY... .TONIGHT...S wind 25 to 40 kt. Seas 9 to 17 ft. Rain. .SAT...S wind 20 to 35 kt. Seas 11 to 17 ft. Rain. .SAT NIGHT...SW wind 15 to 30 kt. Seas 10 to 15 ft. Rain. .SUN...W wind 10 to 25 kt. Seas 10 to 14 ft. .SUN NIGHT...W wind 25 kt. Seas 10 to 13 ft. .MON...W wind 10 to 25 kt. Seas 7 to 12 ft. .TUE...S wind 15 to 30 kt. Seas 9 to 17 ft. .WED...SW wind 25 kt. Seas 7 to 12 ft. $$ PKZ414-251315- Bering Sea Offshore East of 171W- 337 PM AKDT Fri Mar 24 2023 ...GALE WARNING SATURDAY AND SATURDAY NIGHT... .TONIGHT...SW wind 20 kt becoming S 20 to 30 kt after midnight. Seas 7 ft. .SAT...S wind 20 to 35 kt. Seas 8 to 13 ft. Rain. .SAT NIGHT...S wind 20 to 35 kt. Seas 9 to 16 ft. Rain. .SUN...SW wind 15 to 30 kt. Seas 10 to 15 ft. .SUN NIGHT...W wind 10 to 25 kt. Seas 7 to 12 ft. .MON...W wind 10 to 25 kt. Seas 6 to 11 ft. .TUE...SE wind 10 to 25 kt. Seas 4 to 7 ft. .WED...SW wind 25 kt. Seas 5 to 8 ft. $$
349 FZAK62 PAFC 251122 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 322 AM AKDT Sat Mar 25 2023 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. PKZ499-260100- 322 AM AKDT Sat Mar 25 2023 .SYNOPSIS FOR CENTRAL BERING SEA... A 996 mb low at 56N 166E moves into the Russian Arctic at 978 mb by Sun afternoon. Its front extends across the Central Bering and moves to the Chukchi Sea for Sat afternoon, while the trailing front slides over the Central Aleutians through Sun afternoon. $$ PKZ411-260100- Bering Sea Offshore West of 180 and East of the International Dateline- 322 AM AKDT Sat Mar 25 2023 ...STORM WARNING TONIGHT... .TONIGHT...S wind 35 to 50 kt. Seas 15 to 25 ft. Rain. .SAT...SW wind 25 to 35 kt. Seas 16 to 24 ft. .SAT NIGHT...SW wind 20 to 30 kt. Seas 14 to 21 ft. .SUN...W wind 30 kt. Seas 13 to 17 ft. .SUN NIGHT...W wind 15 to 30 kt. Seas 10 to 15 ft. .MON THROUGH TUE...S wind 15 to 30 kt. Seas 10 to 18 ft. .WED...SW wind 25 kt. Seas 8 to 13 ft. $$ PKZ412-260100- Bering Sea Offshore 171W to 180 and North of 56N- 322 AM AKDT Sat Mar 25 2023 ...GALE WARNING THROUGH SATURDAY... .TONIGHT...S wind 30 to 45 kt. Seas 11 to 19 ft. Rain. .SAT...S wind 25 to 40 kt. Seas 14 to 22 ft. Rain. .SAT NIGHT...SW wind 15 to 30 kt. Seas 14 to 19 ft. .SUN...SW wind 15 to 25 kt. Seas 14 to 18 ft. .SUN NIGHT...W wind 20 to 30 kt. Seas 12 to 15 ft. .MON...W wind 15 to 30 kt. Seas 8 to 13 ft. .TUE...SE wind 20 to 30 kt. Seas 9 to 14 ft. .WED...SW wind 25 kt. Seas 6 to 11 ft. $$ PKZ413-260100- Bering Sea Offshore 171W to 180 and South of 56N- 322 AM AKDT Sat Mar 25 2023 ...GALE WARNING THROUGH SATURDAY... .TONIGHT...S wind 25 to 40 kt. Seas 9 to 17 ft. Rain. .SAT...S wind 20 to 35 kt. Seas 11 to 17 ft. Rain. .SAT NIGHT...SW wind 15 to 30 kt. Seas 10 to 15 ft. Rain. .SUN...W wind 10 to 25 kt. Seas 10 to 14 ft. .SUN NIGHT...W wind 25 kt. Seas 10 to 13 ft. .MON...W wind 10 to 25 kt. Seas 7 to 12 ft. .TUE...S wind 15 to 30 kt. Seas 9 to 17 ft. .WED...SW wind 25 kt. Seas 7 to 12 ft. $$ PKZ414-260100- Bering Sea Offshore East of 171W- 322 AM AKDT Sat Mar 25 2023 ...GALE WARNING SATURDAY AND SATURDAY NIGHT... .TONIGHT...SW wind 20 kt becoming S 20 to 30 kt after midnight. Seas 7 ft. .SAT...S wind 20 to 35 kt. Seas 8 to 13 ft. Rain. .SAT NIGHT...S wind 20 to 35 kt. Seas 9 to 16 ft. Rain. .SUN...SW wind 15 to 30 kt. Seas 10 to 15 ft. .SUN NIGHT...W wind 10 to 25 kt. Seas 7 to 12 ft. .MON...W wind 10 to 25 kt. Seas 6 to 11 ft. .TUE...SE wind 10 to 25 kt. Seas 4 to 7 ft. .WED...SW wind 25 kt. Seas 5 to 8 ft. $$
598 FZAK62 PAFC 251124 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 324 AM AKDT Sat Mar 25 2023 Offshore Waters Forecast for the Bering Sea Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ499-260215- 324 AM AKDT Sat Mar 25 2023 .SYNOPSIS FOR CENTRAL BERING SEA... A front moves across the Bering Sea through Sun afternoon. High pressure moves into the western Bering Sun evening. $$ PKZ411-260215- Bering Sea Offshore West of 180 and East of the International Dateline- 324 AM AKDT Sat Mar 25 2023 ...GALE WARNING TODAY... .TODAY...SW wind 25 to 35 kt. Seas 17 to 24 ft. .TONIGHT...SW wind 20 to 30 kt. Seas 14 to 21 ft. Snow showers. .SUN...W wind 25 kt. Seas 14 to 17 ft. .SUN NIGHT...W wind 10 to 25 kt. Seas 10 to 13 ft. .MON THROUGH TUE...S wind 30 to 45 kt. Seas 11 to 19 ft. .WED...W wind 25 to 40 kt. Seas 12 to 17 ft. $$ PKZ412-260215- Bering Sea Offshore 171W to 180 and North of 56N- 324 AM AKDT Sat Mar 25 2023 ...GALE WARNING TODAY... .TODAY...S wind 25 to 40 kt. Seas 15 to 23 ft. Rain and light freezing rain. .TONIGHT...SW wind 15 to 30 kt. Seas 14 to 19 ft. .SUN...SW wind 15 to 25 kt. Seas 13 to 17 ft. .SUN NIGHT...W wind 15 to 25 kt. Seas 11 to 14 ft. .MON...SW wind 10 to 25 kt. Seas 7 to 12 ft. .TUE...SE wind 30 to 45 kt. Seas 8 to 16 ft. .WED...SW wind 15 to 30 kt. Seas 10 to 16 ft. $$ PKZ413-260215- Bering Sea Offshore 171W to 180 and South of 56N- 324 AM AKDT Sat Mar 25 2023 ...GALE WARNING TODAY... .TODAY...S wind 20 to 35 kt. Seas 12 to 18 ft. Rain. .TONIGHT...SW wind 15 to 30 kt. Seas 10 to 15 ft. Rain. .SUN...W wind 10 to 25 kt. Seas 10 to 13 ft. .SUN NIGHT...W wind 20 kt. Seas 9 to 12 ft. .MON...W wind 10 to 25 kt. Seas 5 to 10 ft. .TUE...S wind 30 to 45 kt. Seas 9 to 17 ft. .WED...SW wind 30 to 40 kt. Seas 14 to 18 ft. $$ PKZ414-260215- Bering Sea Offshore East of 171W- 324 AM AKDT Sat Mar 25 2023 ...GALE WARNING THROUGH TONIGHT... .TODAY...S wind 20 to 35 kt. Seas 8 to 13 ft. Rain and light freezing rain. .TONIGHT...S wind 25 to 35 kt diminishing to 15 to 30 kt after midnight. Seas 9 to 16 ft. Rain and light freezing rain. .SUN...SW wind 15 to 30 kt. Seas 9 to 14 ft. Rain with snow. .SUN NIGHT...W wind 10 to 25 kt. Seas 7 to 12 ft. .MON...N wind up to 15 kt. Seas 5 to 9 ft. .TUE...E wind 15 to 30 kt. Seas 4 to 7 ft. .WED...SW wind 15 to 30 kt. Seas 7 to 12 ft. $$
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 Anchorage, AK wrote its last area forecast discussion before this storm warning went out at Mar 22, 5:02 PM AKDT, 10 hours 58 minutes earlier.
Area forecast discussion, Mar 22, 5:02 PM AKDT, 10 hours 58 minutes before
Southcentral and Southwest Alaska Forecast Discussion National Weather Service Anchorage AK 502 PM AKDT Wed Mar 22 2023 .ANALYSIS AND UPPER LEVELS... A negatively tilted upper level trough extends from the Northern Bering Sea into the Western Gulf of Alaska. The primary upper level low and attendant surface low are over Kodiak Island with a strong front bearing down on the Prince William Sound. With the slow moving nature of the front hefty snow accumulations can be seen on webcams and surface observations throughout the Western Prince William Sound. Blizzard conditions persisted through mid afternoon along Portage Glacier Road and areas surrounding Whittier, but have improved slightly since as the precipitation and winds both begin to diminish. Winds are calmer through the mountain valleys, but snow is also producing areas of low visibility throughout the Seward Highway corridor. A deformation band can also be seen northeast of the low center extending from Koliganek to southern Bristol Bay. Over the Bering Sea, zonal flow and cold air aloft continue to stream snow showers into the eastern Aleutians and Alaska Peninsula. && .MODEL DISCUSSION... Models are in good agreement in the short term on mesoscale and synoptic features. Some locational differences exist on a small but strong low moves into the Y-K delta tomorrow and whether winds and snow will be coincident and strong enough to produce blowing snow. The upper level trough associated with this low is expected to cross the state on Friday, but the north/south location and how far south the trough is able to dig remains uncertain. This will impact the precipitation forecast for Southcentral. && .AVIATION... PANC...VFR conditions will persist. Occasional southerly wind gusts may move over the terminal; however, southerly winds are expected to diminish and become light and variable by late evening. Some light snow may move over the terminal late this afternoon, which may briefly lower visibility to MVFR, but this is overall a low probability. && .SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 through 3: Tonight through Saturday)... An occluded low has pushed just east of Kodiak Island this evening. Northwest winds downsloping into Kodiak City have been keeping much of the precipitation as rain, with the bulk of snow limited to Kodiak Island's western shores. Akhiok has had persistent snow throughout the day with occasional rain mixing in with the snow. Subsequent visibilities have been at or below 2 miles for much of the day. As colder temperatures continue to filter in from the northwest, any lingering rain should change over to all snow. Off and on snow showers are then expected to taper off from south to north across Kodiak Island through midnight as the occluded low gradually lifts further northeast into the Gulf. It has also been an active day across Western Prince William where the occluded low's front continues to lift northward across the Kenai Peninsula with snow and elevated winds this evening. Heavy snow and gusty winds did not disappoint with locations from Whittier into Turnagain Pass experiencing whiteout conditions at times. The city of Portage had a peak wind gust of 77 mph earlier in the day, though winds have finally begun to wind down this evening despite continued snowfall. Heavy snow has been observed all the way down the Seward Highway corridor as well with the city of Seward reporting over a foot of snow. Through the rest of the night snow and winds will eventually come to an end as the northward moving front gradually weakens and shifts off to the east through early Thursday morning. For Friday, a polar trough will skirt the northern fringe of Southcentral with the resulting thermal gradient to help induce cyclogenesis over the Susitna Valley. Redeveloping snow showers will be possible from the Talkeetna's into the Chugach Mountains as the low dives southward into the Gulf Friday afternoon through Friday night. Light snow will be possible over the Mat-Valley and Anchorage Bowl and also into the Copper River Basin and Prince William Sound areas over the second half of the day into Friday night. Any low elevation accumulations should be light with heavier snow confined to the higher elevations. Finally, cold air advection from the polar trough and developing low over Southcentral will promote outflow winds late Friday into the morning hours on Saturday. The usual locations from Seward to Valdez will be the most susceptible with gusts anywhere from 25 to 35 mph. && .SHORT TERM FORECAST SOUTHWEST ALASKA (through Saturday morning)... A band of snow will continue for interior Bristol Bay this evening, extending up into the Lower Kuskokwim Valley. Further snowfall amounts should be an inch or less. Colder air filters back across the southwest Mainland behind the front bringing low temperatures in the single digits in most areas. Attention quickly turns to a developing quick-hitting compact low riding along the ice edge on Thursday which will move toward the Yukon Delta. The front will spread snow over the Kuskokwim Delta during the morning hours. As the front passes, winds will turn out of the west and become gusty as the temperature drops. The combination of falling snow and winds will create the potential for a short period of blizzard conditions. The front will move inland quickly Thursday afternoon and evening bringing the blowing snow threat with it, and could extend into Aniak in the late evening hours. As the front progresses eastward snow is possible across the Lower Kuskokwim Valley through Bristol Bay, mainly along the Alaska Range. The next active weather will be front from the Bering Sea bringing southerly winds to the area on Saturday. && .SHORT TERM FORECAST BERING SEA/ALEUTIANS (through Saturday morning)... Snow showers continue over the central and eastern Bering Sea. A developing hybrid/polar low will develop quickly in the vicinity of Saint Matthew Island early Thursday morning. Gale-force winds will be associated with the front. Cold air filtering down from the ice pack and gusty winds will create the opportunity for heavy freezing spray in a narrow corridor closer to the ice edge, with lighter freezing spray elsewhere. Early Friday, a north Pacific low and front will bring widespread southerly winds to the Bering with storm-force winds impacting the western Aleutians and Bering on Friday. && .LONG TERM FORECAST (Days 4 through 7: Sunday through Wednesday) A ridge will build into Southcentral Saturday bringing quieter weather through Sunday before another Bering Sea front approaches Sunday into Monday. This creates another problem with possible precipitation for Southcentral heading into the week due to the development of a possible surface low in the Gulf. Out west, northern parts of Bristol Bay into the Kuskokwim Delta region could get clipped by a Bering low pressure's warm-front Friday into Saturday. Light precipitation chances would be associated with the aforementioned front. The cold-front of this Bering low will track into the Southwest coast by Saturday night into Sunday morning. Accompanying this front will be gale-force winds with possible storm-force gusts, especially for the western Aleutians. As the front progresses eastward throughout the central and eastern Bering, winds will weaken mostly to low-end gales to high- end small craft through Sunday morning. Southwest looks to become unsettled late Saturday night into Monday as the front crosses southern mainland. There are still a few timing differences regarding the progression of the front through Southwest during the week. However, the progressive pattern looks to continue with no real sustained breaks in activity. && .AFC WATCHES/WARNINGS/ADVISORIES... PUBLIC...Blizzard Warning 125. Winter Storm Watch 155. Winter Weather Advisory 171. MARINE...Storm Warning 734 Gale Warning 716 730-733 738 750-753 757 760-762 351 352 412. Heavy Freezing Spray Warning 760-762 764 767 412 414. FIRE WEATHER...NONE. && SYNOPSIS AND MODEL DISCUSSION...CJ SOUTHCENTRAL ALASKA...BL SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...ML LONG TERM...NS
The office that day
Everything else NWS Anchorage, AK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 23, 2:39 AM AKDT | Gale Warning | AFC | 13 hr | |
| Mar 23, 2:39 AM AKDT | Small Craft Advisory | AFC | 13 hr | |
| Mar 23, 4:00 AM AKDT | Heavy Freezing Spray Warning | AFC | 12 hr | |
| Mar 23, 4:03 AM AKDT | Brisk Wind Advisory | AFC | 24 hr | |
| Mar 23, 4:03 AM AKDT | Gale Warning | AFC | 47 hr | |
| Mar 23, 4:03 AM AKDT | Small Craft Advisory | AFC | 7 days | |
| Mar 23, 4:03 AM AKDT | Storm Warning | AFC | 47 hr | |
| Mar 23, 4:03 AM AKDT | Heavy Freezing Spray Warning | AFC | 36 hr | |
| Mar 23, 4:31 AM AKDT | Winter Weather Advisory | AFC | 17 hr | |
| Mar 23, 3:36 PM AKDT | Gale Warning | AFC | 47 hr | |
| Mar 23, 3:36 PM AKDT | Gale Warning | AFC | 47 hr | |
| Mar 23, 3:36 PM AKDT | Small Craft Advisory | AFC | 12 days | |
| Mar 23, 3:48 PM AKDT | Gale Warning | AFC | 24 hr | |
| Mar 23, 3:48 PM AKDT | Small Craft Advisory | AFC | 60 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.