Alert archive / Alaska / Storm Warnings in 2020
Storm Warning 58, NWS Anchorage, AK
NWS Anchorage, AK issued this storm warning at Feb 29, 2020, 3:52 PM AKST. It was in force for 24 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
- Feb 29, 2020, 3:52 PM AKST (00:52 UTC)
- Expired
- Mar 1, 2020, 3:30 PM AKST
- In force
- 24 hr
- Issued by
- NWS Anchorage, AK
The text
As transmitted.
695 FZAK52 PAFC 010052 CWFALU Coastal Waters Forecast National Weather Service Anchorage Alaska 352 PM AKST Sat Feb 29 2020 Coastal Waters Forecast for Southwest Alaska+Bristol Bay+The Alaska Peninsula Waters and the Aleutian Islands up to 100 nm out. 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. PKZ199-011345- 352 PM AKST Sat Feb 29 2020 .SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA PENINSULA WATERS AND THE ALEUTIAN ISLANDS... A 969 mb low 160 nm SW of Saint Paul will move 200 nm east of Saint Paul at 969 mb Saturday night. The low will then move inland over the Kuskokwim Delta Sunday morning. A 990 mb low will develop 170 nm NW of Adak Saturday night and move 180 nm SE of Adak at 1007 mb Monday afternoon. $$ PKZ150-011345- South of the AK Peninsula Sitkinak to Castle Cape- 352 PM AKST Sat Feb 29 2020 ...STORM WARNING SUNDAY... .TONIGHT...SW wind 40 kt. Seas 21 ft. .SUN...SW wind 50 kt. Seas 26 ft. .SUN NIGHT...SW wind 45 kt diminishing to 30 kt after midnight. Seas 23 ft. .MON...W wind 25 kt. Seas 13 ft. .MON NIGHT...W wind 35 kt. Seas 16 ft. .TUE THROUGH THU...NW wind 30 kt. Seas 13 ft. $$ PKZ155-011345- South of the AK Peninsula Castle Cape to Cape Sarichef- 352 PM AKST Sat Feb 29 2020 ...STORM WARNING THROUGH SUNDAY... .TONIGHT...SW wind 50 kt. Seas 32 ft. From the Shumagin Islands E, seas 20 ft building to 26 ft after midnight. .SUN...SW wind 50 kt. Seas 31 ft. .SUN NIGHT...SW wind 30 kt diminishing to 20 kt after midnight. From the Shumagin Islands E, SW wind 40 kt diminishing to 25 kt after midnight. Seas 20 ft. .MON...NW wind 20 kt. Seas 14 ft. .MON NIGHT...NW wind 30 kt. Seas 15 ft. .TUE...NW wind 25 kt. Seas 10 ft. .WED...NW wind 30 kt. Seas 10 ft. .THU...NW wind 20 kt. Seas 7 ft. $$ PKZ160-011345- Bristol Bay- 352 PM AKST Sat Feb 29 2020 ...STORM WARNING SUNDAY... .TONIGHT...S wind 30 kt increasing to 40 kt after midnight. Snow. .SUN...SW wind 50 kt. .SUN NIGHT...W wind 35 kt diminishing to 25 kt after midnight. .MON AND MON NIGHT...W wind 20 kt. .TUE...NW wind 30 kt. .WED...N wind 20 kt. .THU...N wind 10 kt. $$ PKZ165-011345- Port Heiden to Cape Sarichef- 352 PM AKST Sat Feb 29 2020 ...STORM WARNING THROUGH SUNDAY... .TONIGHT...SW wind 55 kt, Seas 26 ft building to 36 ft after midnight. From Port Moller E, S wind 40 kt becoming SW 55 kt after midnight, Seas 13 ft building to 26 ft after midnight. .SUN...SW wind 55 kt. Seas 33 ft subsiding to 26 ft in the afternoon. .SUN NIGHT...W wind 30 kt becoming NW 20 kt after midnight. From Port Moller E, W wind 35 kt. Seas 16 ft subsiding to 11 ft after midnight. Freezing spray. .MON AND MON NIGHT...NW wind 20 kt. Seas 5 ft. .TUE...N wind 30 kt. Seas 8 ft. .WED...N wind 25 kt. Seas 8 ft. .THU...N wind 15 kt. Seas 4 ft. $$ PKZ170-011345- Cape Sarichef to Nikolski Bering Side- 352 PM AKST Sat Feb 29 2020 ...STORM WARNING THROUGH SUNDAY... .TONIGHT...SW wind 60 kt. Seas 35 ft. .SUN...SW wind 55 kt diminishing to 45 kt in the afternoon. Seas 31 ft subsiding to 23 ft in the afternoon. .SUN NIGHT...W wind 20 kt. Seas 13 ft. .MON...Variable wind 10 kt. Seas 7 ft. .MON NIGHT...NW wind 15 kt. Seas 5 ft. .TUE THROUGH WED...N wind 25 kt. Seas 9 ft. .THU...S wind 15 kt. Seas 7 ft. $$ PKZ171-011345- Unalaska Bay- 352 PM AKST Sat Feb 29 2020 ...STORM WARNING TONIGHT... .TONIGHT...SW wind 50 kt. Seas 8 ft. .SUN...SW wind 45 kt diminishing to 35 kt in the afternoon. Seas 7 ft. .SUN NIGHT...W wind 10 kt. Seas 3 ft. Snow showers. .MON AND MON NIGHT...NW wind 10 kt. Seas 3 ft. .TUE THROUGH WED...NW wind 20 kt. Seas 7 ft. .THU...SW wind 10 kt. Seas 2 ft. $$ PKZ172-011345- Cape Sarichef to Nikolski Pacific Side- 352 PM AKST Sat Feb 29 2020 ...STORM WARNING TONIGHT... .TONIGHT...SW wind 55 kt. Seas 34 ft. .SUN...SW wind 45 kt. Seas 30 ft subsiding to 23 ft in the afternoon. .SUN NIGHT...SW wind 20 kt becoming W 30 kt after midnight. Seas 16 ft. .MON...W wind 20 kt. Seas 13 ft. .MON NIGHT...N wind 20 kt. Seas 12 ft. .TUE THROUGH WED...NW wind 25 kt. Seas 10 ft. .THU...SW wind 15 kt. Seas 12 ft. $$ PKZ173-011345- Nikolski to Seguam Island Bering Side- 352 PM AKST Sat Feb 29 2020 ...STORM WARNING TONIGHT... .TONIGHT...SW wind 60 kt. Seas 33 ft. .SUN...SW wind 45 kt diminishing to 35 kt in the afternoon. Seas 25 ft subsiding to 19 ft in the afternoon. .SUN NIGHT...SW wind 20 kt. Seas 13 ft. .MON...SW wind 15 kt. Seas 8 ft. .MON NIGHT...N wind 20 kt. Seas 7 ft. .TUE...N wind 20 kt. Seas 8 ft. .WED...NE wind 20 kt. Seas 9 ft. .THU...S wind 20 kt. Seas 12 ft. $$ PKZ174-011345- Nikolski to Seguam Island Pacific Side- 352 PM AKST Sat Feb 29 2020 ...STORM WARNING TONIGHT... .TONIGHT...SW wind 55 kt. Seas 34 ft. .SUN...SW wind 40 kt diminishing to 30 kt in the afternoon. Seas 25 ft subsiding to 19 ft in the afternoon. .SUN NIGHT...SW wind 20 kt. Seas 14 ft. .MON...SW wind 15 kt. Seas 11 ft. .MON NIGHT...N wind 15 kt. Seas 12 ft. .TUE THROUGH WED...N wind 20 kt. Seas 10 ft. .THU...S wind 20 kt. Seas 13 ft. $$ PKZ175-011345- Seguam Island to Adak Bering Side- 352 PM AKST Sat Feb 29 2020 ...STORM WARNING TONIGHT... .TONIGHT...SW wind 50 kt. Seas 19 ft. .SUN...SW wind 35 kt. Seas 18 ft. .SUN NIGHT...SW wind 20 kt. Seas 11 ft. .MON...NE wind 20 kt. Seas 8 ft. .MON NIGHT...N wind 25 kt. Seas 8 ft. .TUE...N wind 20 kt. Seas 6 ft. .WED...SE wind 25 kt. Seas 11 ft. .THU...S wind 25 kt. Seas 11 ft. $$ PKZ176-011345- Seguam Island to Adak Pacific Side- 352 PM AKST Sat Feb 29 2020 ...STORM WARNING TONIGHT... .TONIGHT...SW wind 50 kt. Seas 29 ft. .SUN...SW wind 30 kt. Seas 21 ft. .SUN NIGHT...SW wind 25 kt. Seas 13 ft. .MON...S wind 20 kt. Seas 12 ft. .MON NIGHT...N wind 15 kt. Seas 11 ft. .TUE...NW wind 15 kt. Seas 8 ft. .WED...SE wind 25 kt. Seas 15 ft. .THU...S wind 20 kt. Seas 15 ft. $$ PKZ177-011345- Adak to Kiska- 352 PM AKST Sat Feb 29 2020 ...GALE WARNING THROUGH SUNDAY... .TONIGHT...W wind 40 kt. Seas 20 ft. .SUN...W wind 35 kt. Seas 19 ft. .SUN NIGHT...W wind 30 kt. Seas 14 ft. .MON...N wind 30 kt. Seas 13 ft. .MON NIGHT...N wind 25 kt. Seas 10 ft. .TUE...N wind 15 kt. Seas 6 ft. .WED...SE wind 30 kt. Seas 16 ft. .THU...S wind 20 kt. Seas 15 ft. $$ PKZ178-011345- Kiska to Attu- 352 PM AKST Sat Feb 29 2020 ...SMALL CRAFT ADVISORY THROUGH SUNDAY NIGHT... .TONIGHT...N wind 30 kt. Seas 17 ft. Snow showers and rain showers. .SUN...N wind 25 kt. Seas 16 ft. .SUN NIGHT...N wind 25 kt. Seas 14 ft. .MON...N wind 25 kt. Seas 13 ft. .MON NIGHT...N wind 20 kt. Seas 8 ft. .TUE...NE wind 20 kt. Seas 5 ft. .WED...SE wind 30 kt. Seas 16 ft. .THU...S wind 20 kt. Seas 14 ft. $$ PKZ179-011345- Pribilof Islands Near Shore Waters- 352 PM AKST Sat Feb 29 2020 ...GALE WARNING TONIGHT... ...HEAVY FREEZING SPRAY WARNING THROUGH SUNDAY NIGHT... .TONIGHT...N wind 35 kt. Seas 20 ft. Heavy freezing spray. .SUN...NW wind 25 kt. Seas 17 ft. Heavy freezing spray. .SUN NIGHT...N wind 20 kt. Seas 11 ft. Heavy freezing spray. .MON...N wind 15 kt. Seas 7 ft. .MON NIGHT...NW wind 20 kt. Seas 5 ft. .TUE THROUGH WED...N wind 20 kt. Seas 7 ft. .THU...SE wind 15 kt. Seas 7 ft. $$ PKZ180-011345- Kuskokwim Delta and Etolin Strait- 352 PM AKST Sat Feb 29 2020 ...STORM WARNING SUNDAY... .TONIGHT...SE wind 35 kt becoming S 45 kt after midnight. Snow. .SUN...NW wind 50 kt. .SUN NIGHT...NW wind 30 kt diminishing to 20 kt after midnight. .MON AND MON NIGHT...NW wind 20 kt. .TUE...NW wind 30 kt. .WED...NW wind 20 kt. .THU...N wind 15 kt. $$ PKZ181-011345- North and West of Nunivak Island- 352 PM AKST Sat Feb 29 2020 ...GALE WARNING THROUGH SUNDAY... .TONIGHT...NE wind 40 kt. .SUN...N wind 35 kt. .SUN NIGHT...N wind 25 kt. .MON AND MON NIGHT...NW wind 15 kt. .TUE...NW wind 20 kt. .WED...Variable wind 10 kt. .THU...Variable wind 10 kt. $$ PKZ185-011345- Saint Matthew Island Waters- 352 PM AKST Sat Feb 29 2020 ...GALE WARNING TONIGHT... ...HEAVY FREEZING SPRAY WARNING THROUGH SUNDAY NIGHT... .TONIGHT...NE wind 40 kt. Seas in ice free waters 12 ft. Heavy freezing spray. .SUN...N wind 30 kt. Seas in ice free waters 10 ft. Heavy freezing spray. .SUN NIGHT...N wind 20 kt. Seas in ice free waters 7 ft. Heavy freezing spray. .MON...NW wind 15 kt. Seas in ice free waters 5 ft. .MON NIGHT...NW wind 20 kt. Seas in ice free waters 6 ft. .TUE...NW wind 25 kt. Seas in ice free waters 5 ft. .WED...SW wind 15 kt. Seas in ice free waters 4 ft. .THU...SE wind 20 kt. Seas in ice free waters 6 ft. $$
2 follow-up statements
161 FZAK52 PAFC 011232 CWFALU Coastal Waters Forecast National Weather Service Anchorage Alaska 332 AM AKST Sun Mar 1 2020 Coastal Waters Forecast for Southwest Alaska+Bristol Bay+The Alaska Peninsula Waters and the Aleutian Islands up to 100 nm out. 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. PKZ199-020200- 332 AM AKST Sun Mar 1 2020 .SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA PENINSULA WATERS AND THE ALEUTIAN ISLANDS... A 970 mb low 100 nm SW of Cape Newenham will move into southwest Alaska Sun afternoon. A 994 mb low Sun morning 110 nm NW of Amchitka moves to 20 nm NE of Amchitka at 1001 mb Mon morning, then to 230 nm SE of Atka at 1017 mb Tue morning. $$ PKZ150-020200- South of the AK Peninsula Sitkinak to Castle Cape- 332 AM AKST Sun Mar 1 2020 ...STORM WARNING TODAY... .TODAY...SW wind 50 kt. Seas 26 ft. .TONIGHT...SW wind 45 kt diminishing to 30 kt after midnight. Seas 23 ft. .MON...W wind 25 kt. Seas 13 ft. .MON NIGHT...W wind 35 kt. Seas 16 ft. .TUE THROUGH THU...NW wind 30 kt. Seas 13 ft. $$ PKZ155-020200- South of the AK Peninsula Castle Cape to Cape Sarichef- 332 AM AKST Sun Mar 1 2020 ...STORM WARNING TODAY... .TODAY...SW wind 50 kt. Seas 31 ft. .TONIGHT...SW wind 30 kt diminishing to 20 kt after midnight. From the Shumagin Islands E, SW wind 40 kt diminishing to 25 kt after midnight. Seas 20 ft. .MON...W wind 20 kt. Seas 14 ft. .MON NIGHT...NW wind 30 kt. Seas 15 ft. .TUE...NW wind 25 kt. Seas 10 ft. .WED...NW wind 30 kt. Seas 10 ft. .THU...NW wind 20 kt. Seas 7 ft. $$ PKZ160-020200- Bristol Bay- 332 AM AKST Sun Mar 1 2020 ...STORM WARNING TODAY... .TODAY...SW wind 50 kt. Areas of blowing snow. .TONIGHT...W wind 35 kt diminishing to 25 kt after midnight. .MON...W wind 20 kt. .MON NIGHT...W wind 20 kt. .TUE...NW wind 30 kt. .WED...N wind 20 kt. .THU...N wind 10 kt. $$ PKZ165-020200- Port Heiden to Cape Sarichef- 332 AM AKST Sun Mar 1 2020 ...STORM WARNING TODAY... .TODAY...SW wind 55 kt. Seas 33 ft subsiding to 26 ft in the afternoon. .TONIGHT...W wind 30 kt becoming NW 20 kt after midnight. From Port Moller E, W wind 35 kt. Seas 16 ft subsiding to 11 ft after midnight. Freezing spray. .MON...NW wind 20 kt. Seas 6 ft. Freezing spray. .MON NIGHT...NW wind 20 kt. Seas 4 ft. .TUE...N wind 30 kt. Seas 8 ft. .WED...N wind 25 kt. Seas 8 ft. .THU...N wind 15 kt. Seas 4 ft. $$ PKZ170-020200- Cape Sarichef to Nikolski Bering Side- 332 AM AKST Sun Mar 1 2020 ...STORM WARNING TODAY... .TODAY...SW wind 55 kt diminishing to 45 kt in the afternoon. Seas 31 ft subsiding to 23 ft in the afternoon. .TONIGHT...W wind 20 kt. Seas 13 ft. .MON...Variable wind 10 kt. Seas 7 ft. .MON NIGHT...NW wind 15 kt. Seas 5 ft. .TUE THROUGH WED...N wind 25 kt. Seas 9 ft. .THU...S wind 15 kt. Seas 7 ft. $$ PKZ171-020200- Unalaska Bay- 332 AM AKST Sun Mar 1 2020 ...GALE WARNING TODAY... .TODAY...SW wind 45 kt diminishing to 35 kt in the afternoon. Seas 7 ft. .TONIGHT...W wind 10 kt. Seas 3 ft. Snow showers. .MON...N wind 10 kt in the morning becoming variable less than 10 kt. Seas 3 ft. .MON NIGHT...NW wind 10 kt. Seas 3 ft. .TUE THROUGH WED...NW wind 20 kt. Seas 7 ft. .THU...SW wind 10 kt. Seas 2 ft. $$ PKZ172-020200- Cape Sarichef to Nikolski Pacific Side- 332 AM AKST Sun Mar 1 2020 ...GALE WARNING TODAY... .TODAY...SW wind 45 kt. Seas 30 ft subsiding to 23 ft in the afternoon. .TONIGHT...SW wind 20 kt becoming W 30 kt after midnight. Seas 16 ft. .MON...W wind 20 kt. Seas 13 ft. .MON NIGHT...N wind 20 kt. Seas 12 ft. .TUE THROUGH WED...NW wind 25 kt. Seas 10 ft. .THU...SW wind 15 kt. Seas 12 ft. $$ PKZ173-020200- Nikolski to Seguam Island Bering Side- 332 AM AKST Sun Mar 1 2020 ...GALE WARNING TODAY... .TODAY...SW wind 45 kt diminishing to 35 kt in the afternoon. Seas 25 ft subsiding to 19 ft in the afternoon. .TONIGHT...SW wind 20 kt. Seas 13 ft. .MON...Variable wind 10 kt becoming NE 15 kt in the afternoon. Seas 8 ft. .MON NIGHT...N wind 20 kt. Seas 7 ft. .TUE...N wind 20 kt. Seas 8 ft. .WED...NE wind 20 kt. Seas 9 ft. .THU...S wind 20 kt. Seas 12 ft. $$ PKZ174-020200- Nikolski to Seguam Island Pacific Side- 332 AM AKST Sun Mar 1 2020 ...GALE WARNING TODAY... .TODAY...SW wind 40 kt diminishing to 30 kt in the afternoon. Seas 25 ft subsiding to 19 ft in the afternoon. .TONIGHT...SW wind 20 kt. Seas 14 ft. .MON...SW wind 15 kt. Seas 11 ft. .MON NIGHT...N wind 15 kt. Seas 12 ft. .TUE THROUGH WED...N wind 20 kt. Seas 10 ft. .THU...S wind 20 kt. Seas 13 ft. $$ PKZ175-020200- Seguam Island to Adak Bering Side- 332 AM AKST Sun Mar 1 2020 ...GALE WARNING TODAY... .TODAY...SW wind 35 kt. Seas 18 ft. .TONIGHT...SW wind 20 kt. Seas 11 ft. .MON...E wind 20 kt. Seas 8 ft. .MON NIGHT...N wind 25 kt. Seas 8 ft. .TUE...N wind 20 kt. Seas 6 ft. .WED...SE wind 25 kt. Seas 11 ft. .THU...S wind 25 kt. Seas 11 ft. $$ PKZ176-020200- Seguam Island to Adak Pacific Side- 332 AM AKST Sun Mar 1 2020 ...SMALL CRAFT ADVISORY THROUGH MONDAY... .TODAY...SW wind 30 kt. Seas 21 ft. .TONIGHT...SW wind 25 kt. Seas 13 ft. .MON...S wind 20 kt becoming E in the afternoon. Seas 12 ft. .MON NIGHT...N wind 15 kt. Seas 11 ft. .TUE...NW wind 15 kt. Seas 8 ft. .WED...SE wind 25 kt. Seas 15 ft. .THU...S wind 20 kt. Seas 15 ft. $$ PKZ177-020200- Adak to Kiska- 332 AM AKST Sun Mar 1 2020 ...GALE WARNING TODAY... .TODAY...W wind 35 kt. Seas 19 ft. .TONIGHT...W wind 30 kt. Seas 14 ft. .MON...N wind 30 kt. Seas 13 ft. .MON NIGHT...N wind 25 kt. Seas 10 ft. .TUE...N wind 15 kt. Seas 6 ft. .WED...SE wind 30 kt. Seas 16 ft. .THU...S wind 20 kt. Seas 15 ft. $$ PKZ178-020200- Kiska to Attu- 332 AM AKST Sun Mar 1 2020 ...SMALL CRAFT ADVISORY THROUGH MONDAY... .TODAY...N wind 25 kt. Seas 16 ft. .TONIGHT...N wind 25 kt. Seas 14 ft. .MON...N wind 25 kt. Seas 13 ft. .MON NIGHT...N wind 20 kt. Seas 8 ft. .TUE...NE wind 20 kt. Seas 5 ft. .WED...SE wind 30 kt. Seas 16 ft. .THU...S wind 20 kt. Seas 14 ft. $$ PKZ179-020200- Pribilof Islands Near Shore Waters- 332 AM AKST Sun Mar 1 2020 ...HEAVY FREEZING SPRAY WARNING THROUGH MONDAY... ...SMALL CRAFT ADVISORY THROUGH TONIGHT... .TODAY...NW wind 25 kt. Seas 17 ft. Heavy freezing spray north of 57N. .TONIGHT...N wind 20 kt. Seas 11 ft. Heavy freezing spray north of 56N. .MON...N wind 15 kt. Seas 7 ft. Heavy freezing spray north of 56N. .MON NIGHT...NW wind 20 kt. Seas 5 ft. .TUE THROUGH WED...N wind 20 kt. Seas 7 ft. .THU...SE wind 15 kt. Seas 7 ft. $$ PKZ180-020200- Kuskokwim Delta and Etolin Strait- 332 AM AKST Sun Mar 1 2020 ...STORM WARNING TODAY... .TODAY...NW wind 50 kt. .TONIGHT...NW wind 30 kt diminishing to 20 kt after midnight. .MON...NW wind 20 kt. .MON NIGHT...NW wind 20 kt. .TUE...NW wind 30 kt. .WED...NW wind 20 kt. .THU...NE wind 15 kt. $$ PKZ181-020200- North and West of Nunivak Island- 332 AM AKST Sun Mar 1 2020 ...GALE WARNING TODAY... .TODAY...N wind 35 kt. .TONIGHT...N wind 25 kt. .MON...NW wind 15 kt. .MON NIGHT...NW wind 15 kt. .TUE...NW wind 20 kt. .WED...Variable wind 10 kt. .THU...Variable wind 10 kt. $$ PKZ185-020200- Saint Matthew Island Waters- 332 AM AKST Sun Mar 1 2020 ...HEAVY FREEZING SPRAY WARNING THROUGH MONDAY... ...SMALL CRAFT ADVISORY TODAY... .TODAY...N wind 30 kt. Seas in ice free waters 10 ft. Heavy freezing spray. .TONIGHT...N wind 20 kt. Seas in ice free waters 7 ft. Heavy freezing spray. .MON...NW wind 15 kt. Seas in ice free waters 5 ft. Heavy freezing spray. .MON NIGHT...NW wind 20 kt. Seas in ice free waters 6 ft. .TUE...NW wind 25 kt. Seas in ice free waters 5 ft. .WED...SW wind 15 kt. Seas in ice free waters 4 ft. .THU...SE wind 20 kt. Seas in ice free waters 7 ft. $$
478 FZAK52 PAFC 020030 CWFALU Coastal Waters Forecast National Weather Service Anchorage Alaska 330 PM AKST Sun Mar 1 2020 Coastal Waters Forecast for Southwest Alaska+Bristol Bay+The Alaska Peninsula Waters and the Aleutian Islands up to 100 nm out. 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. PKZ199-021345- 330 PM AKST Sun Mar 1 2020 .SYNOPSIS FOR SOUTHWEST ALASKA+BRISTOL BAY+THE ALASKA PENINSULA WATERS AND THE ALEUTIAN ISLANDS... A 997 mb low 100 nm NW of Adak Sunday afternoon will move 70 nm south of Adak at 1007 mb Monday afternoon. The low then continues southeastward into the North Pacific through Tuesday afternoon. A 1002 mb low 360 nm SW of Dutch Harbor Sunday afternoon will move 190 nm SE of Dutch Harbor at 1005 mb Sunday night. This low will then become absorbed into another low over the northern Gulf. $$ PKZ150-021345- South of the AK Peninsula Sitkinak to Castle Cape- 330 PM AKST Sun Mar 1 2020 ...GALE WARNING TONIGHT... ...HEAVY FREEZING SPRAY WARNING TONIGHT... .TONIGHT...W wind 40 kt diminishing to 30 kt after midnight. Seas 26 ft subsiding to 19 ft after midnight. Heavy freezing spray. .MON...W wind 25 kt. Seas 14 ft. Freezing spray. .MON NIGHT...W wind 30 kt. Seas 14 ft. Freezing spray. .TUE...NW wind 30 kt. Seas 11 ft. .TUE NIGHT...NW wind 35 kt. Seas 12 ft. .WED...NW wind 40 kt. Seas 14 ft. .THU...NW wind 30 kt. Seas 11 ft. .FRI...W wind 15 kt. Seas 5 ft. $$ PKZ155-021345- South of the AK Peninsula Castle Cape to Cape Sarichef- 330 PM AKST Sun Mar 1 2020 ...GALE WARNING TONIGHT... .TONIGHT...W wind 30 kt becoming SW 15 kt after midnight. From the Shumagin Islands E, W wind 40 kt diminishing to 20 kt after midnight. Seas 21 ft subsiding to 14 ft after midnight. .MON...NW wind 20 kt. Seas 13 ft. .MON NIGHT...NW wind 25 kt. Seas 13 ft. Freezing spray. .TUE...NW wind 25 kt. Seas 10 ft. .TUE NIGHT...NW wind 30 kt. Seas 10 ft. .WED...NW wind 30 kt. Seas 11 ft. .THU...NW wind 20 kt. Seas 7 ft. .FRI...W wind 15 kt. Seas 7 ft. $$ PKZ160-021345- Bristol Bay- 330 PM AKST Sun Mar 1 2020 ...GALE WARNING TONIGHT... .TONIGHT...W wind 35 kt diminishing to 25 kt after midnight. .MON...W wind 20 kt. .MON NIGHT...W wind 20 kt. .TUE...NW wind 25 kt. .TUE NIGHT...NW wind 30 kt. .WED...NW wind 20 kt. .THU...N wind 10 kt. .FRI...Variable wind less than 10 kt. $$ PKZ165-021345- Port Heiden to Cape Sarichef- 330 PM AKST Sun Mar 1 2020 ...HEAVY FREEZING SPRAY WARNING MONDAY NIGHT... ...SMALL CRAFT ADVISORY TONIGHT... .TONIGHT...W wind 20 kt in the evening becoming variable 10 kt. From Port Moller E, W wind 30 kt becoming NW 20 kt after midnight. Seas 13 ft subsiding to 8 ft after midnight. Freezing spray. .MON...NW wind 20 kt. Seas 6 ft. Freezing spray. .MON NIGHT...NW wind 20 kt. Seas 4 ft. Heavy freezing spray. .TUE AND TUE NIGHT...NW wind 30 kt. Seas 8 ft. .WED...NW wind 30 kt. Seas 10 ft. .THU...N wind 15 kt. Seas 4 ft. .FRI...Variable wind 10 kt. Seas 2 ft. $$ PKZ170-021345- Cape Sarichef to Nikolski Bering Side- 330 PM AKST Sun Mar 1 2020 ...SMALL CRAFT ADVISORY TONIGHT... .TONIGHT...W wind 15 kt. Seas 12 ft. .MON...N wind 15 kt. Seas 7 ft. .MON NIGHT...NW wind 15 kt. Seas 4 ft. Freezing spray. .TUE AND TUE NIGHT...N wind 25 kt. Seas 8 ft. .WED...NW wind 25 kt. Seas 9 ft. .THU...S wind 15 kt. Seas 7 ft. .FRI...Variable wind 10 kt. Seas 6 ft. $$ PKZ171-021345- Unalaska Bay- 330 PM AKST Sun Mar 1 2020 .TONIGHT...SW wind 10 kt in the evening becoming variable less than 10 kt. Seas 3 ft. .MON...N wind 10 kt. Seas 3 ft. .MON NIGHT...Variable wind less than 10 kt becoming NW 15 kt after midnight. Seas 3 ft. Freezing spray. .TUE...NW wind 20 kt. Seas 5 ft. .TUE NIGHT...N wind 25 kt. Seas 7 ft. .WED...NW wind 20 kt. Seas 7 ft. .THU THROUGH FRI...SW wind 10 kt. Seas 2 ft. $$ PKZ172-021345- Cape Sarichef to Nikolski Pacific Side- 330 PM AKST Sun Mar 1 2020 ...SMALL CRAFT ADVISORY THROUGH MONDAY NIGHT... .TONIGHT...S wind 15 kt in the evening becoming variable 10 kt. Seas 15 ft. .MON...NW wind 15 kt. Seas 12 ft. .MON NIGHT...N wind 15 kt. Seas 11 ft. .TUE AND TUE NIGHT...N wind 25 kt. Seas 10 ft. .WED...NW wind 25 kt. Seas 8 ft. .THU THROUGH FRI...W wind 15 kt. Seas 11 ft. $$ PKZ173-021345- Nikolski to Seguam Island Bering Side- 330 PM AKST Sun Mar 1 2020 ...SMALL CRAFT ADVISORY THROUGH MONDAY... .TONIGHT...Variable wind 10 kt. Seas 12 ft. .MON...Variable wind 10 kt becoming NW 15 kt in the afternoon. Seas 8 ft. .MON NIGHT...N wind 20 kt. Seas 7 ft. .TUE AND TUE NIGHT...N wind 20 kt. Seas 8 ft. .WED...NE wind 20 kt. Seas 9 ft. .THU...S wind 20 kt. Seas 12 ft. .FRI...SW wind 15 kt. Seas 8 ft. $$ PKZ174-021345- Nikolski to Seguam Island Pacific Side- 330 PM AKST Sun Mar 1 2020 ...SMALL CRAFT ADVISORY THROUGH MONDAY NIGHT... .TONIGHT...NE wind 15 kt becoming W after midnight. Seas 13 ft. .MON...SW wind 15 kt. Seas 11 ft. .MON NIGHT...N wind 15 kt. Seas 11 ft. .TUE...N wind 20 kt. Seas 10 ft. .TUE NIGHT...N wind 25 kt. Seas 8 ft. .WED...E wind 20 kt. Seas 10 ft. .THU...S wind 20 kt. Seas 13 ft. .FRI...SW wind 15 kt. Seas 11 ft. $$ PKZ175-021345- Seguam Island to Adak Bering Side- 330 PM AKST Sun Mar 1 2020 ...SMALL CRAFT ADVISORY TONIGHT AND MONDAY NIGHT... .TONIGHT...S wind 20 kt. Seas 10 ft. .MON...NE wind 20 kt. Seas 7 ft. .MON NIGHT...N wind 25 kt diminishing to 15 kt after midnight. Seas 8 ft. .TUE...N wind 20 kt. Seas 5 ft. .TUE NIGHT...NE wind 15 kt. Seas 6 ft. .WED...SE wind 25 kt. Seas 11 ft. .THU...S wind 25 kt. Seas 11 ft. .FRI...SW wind 15 kt. Seas 6 ft. $$ PKZ176-021345- Seguam Island to Adak Pacific Side- 330 PM AKST Sun Mar 1 2020 ...SMALL CRAFT ADVISORY THROUGH MONDAY NIGHT... .TONIGHT...SW wind 20 kt. Seas 12 ft. .MON...S wind 20 kt. Seas 11 ft. .MON NIGHT...N wind 15 kt. Seas 10 ft. .TUE...N wind 15 kt. Seas 7 ft. .TUE NIGHT...NE wind 20 kt. Seas 6 ft. .WED...SE wind 25 kt. Seas 15 ft. .THU...S wind 20 kt. Seas 15 ft. .FRI...SW wind 15 kt. Seas 12 ft. $$ PKZ177-021345- Adak to Kiska- 330 PM AKST Sun Mar 1 2020 ...GALE WARNING TONIGHT... .TONIGHT...NW wind 35 kt. Seas 14 ft. .MON...N wind 30 kt. Seas 13 ft. .MON NIGHT...N wind 25 kt diminishing to 15 kt after midnight. Seas 10 ft. .TUE...N wind 15 kt. Seas 6 ft. .TUE NIGHT...E wind 15 kt. Seas 4 ft. .WED...SE wind 30 kt. Seas 16 ft. .THU...S wind 20 kt. Seas 15 ft. .FRI...S wind 15 kt. Seas 11 ft. $$ PKZ178-021345- Kiska to Attu- 330 PM AKST Sun Mar 1 2020 ...SMALL CRAFT ADVISORY THROUGH MONDAY NIGHT... .TONIGHT...N wind 30 kt. Seas 13 ft. .MON...N wind 30 kt diminishing to 20 kt in the afternoon. Seas 12 ft. .MON NIGHT...N wind 15 kt. Seas 9 ft. .TUE...Variable wind 10 kt. Seas 6 ft. .TUE NIGHT...E wind 20 kt. Seas 4 ft. .WED...SE wind 35 kt. Seas 16 ft. .THU...S wind 20 kt. Seas 14 ft. .FRI...SE wind 20 kt. Seas 10 ft. $$ PKZ179-021345- Pribilof Islands Near Shore Waters- 330 PM AKST Sun Mar 1 2020 ...HEAVY FREEZING SPRAY WARNING MONDAY AND MONDAY NIGHT... ...SMALL CRAFT ADVISORY TONIGHT... .TONIGHT...N wind 20 kt. Seas 11 ft. Freezing spray. .MON...N wind 15 kt. Seas 6 ft. Heavy freezing spray. .MON NIGHT...NW wind 20 kt. Seas 6 ft. Heavy freezing spray. .TUE AND TUE NIGHT...NW wind 25 kt. Seas 7 ft. .WED...NW wind 25 kt. Seas 6 ft. .THU...SE wind 15 kt. Seas 7 ft. .FRI...Variable wind 10 kt. Seas 6 ft. $$ PKZ180-021345- Kuskokwim Delta and Etolin Strait- 330 PM AKST Sun Mar 1 2020 ...BRISK WIND ADVISORY TONIGHT... .TONIGHT...NW wind 30 kt diminishing to 20 kt after midnight. .MON...NW wind 20 kt. .MON NIGHT...NW wind 20 kt. .TUE...NW wind 25 kt. .TUE NIGHT...NW wind 30 kt. .WED...NW wind 20 kt. .THU...NE wind 15 kt. .FRI...NE wind 10 kt. $$ PKZ181-021345- North and West of Nunivak Island- 330 PM AKST Sun Mar 1 2020 ...BRISK WIND ADVISORY TONIGHT... .TONIGHT...N wind 25 kt. .MON...NW wind 15 kt. .MON NIGHT...NW wind 20 kt. .TUE AND TUE NIGHT...NW wind 20 kt. .WED...W wind 15 kt. .THU...Variable wind 10 kt. .FRI...Variable wind 10 kt. $$ PKZ185-021345- Saint Matthew Island Waters- 330 PM AKST Sun Mar 1 2020 ...HEAVY FREEZING SPRAY WARNING THROUGH MONDAY NIGHT... ...SMALL CRAFT ADVISORY MONDAY NIGHT... .TONIGHT...N wind 20 kt. Seas in ice free waters 5 ft. Heavy freezing spray. .MON...NW wind 20 kt. Seas in ice free waters 4 ft. Heavy freezing spray. .MON NIGHT...NW wind 20 kt E of Saint Matthew Island...NW 25 kt W of Saint Matthew Island. Seas in ice free waters 5 ft. Heavy freezing spray. .TUE AND TUE NIGHT...W wind 25 kt. Seas in ice free waters 5 ft. .WED...SW wind 15 kt. Seas in ice free waters 4 ft. .THU...SE wind 20 kt. Seas in ice free waters 7 ft. .FRI...E wind 15 kt. Seas in ice free waters 7 ft. $$
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 Feb 29, 5:09 AM AKST, 10 hours 43 minutes earlier.
Area forecast discussion, Feb 29, 5:09 AM AKST, 10 hours 43 minutes before
Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
509 AM AKST Sat Feb 29 2020
.ANALYSIS AND UPPER LEVELS...
A ridge of high pressure stretches from central Russia to the
Yukon this morning, with a 967 mb low crossing the west central
Aleutians, and its associated front sweeping eastward across the
eastern Aleutians and Bering Sea. Doppler radar imagery shows some
light returns starting to move into southwestern portions of the
state, but only a few observations of light snow have been
observed thus far. Various types of satellite imagery show a deep
moisture tap accompanying the Aleutians low, with origins from
near Micronesia.
&&
.MODEL DISCUSSION...
The models are in pretty good agreement through the middle of next
week, and even then they remain in fair to decent agreement after
that, with just some amplitude differences in the overall
synoptic pattern. This leads to above average confidence in the
forecast.
&&
.AVIATION...
PANC...VFR conditions and light winds will persist through the
early afternoon, with perhaps some brief fog developing near the
terminal, similar to yesterday. If it does, a few hours of LIFR
ceilings or visibilities are possible, but confidence was
insufficient to include in the forecast. Otherwise, snow with
reduced ceilings, visibilities, and low level wind shear develops
by the evening.
&&
.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2)...
As expected, much more active weather is moving into Southcentral
today and through the rest of the weekend. Snow and Blowing snow
have triggered advisories for the Kenai Peninsula and eastern
Turnagain Arm. The southern part of the Kenai Peninsula toward
Homer will warm up into the mid to upper 30s tomorrow as the winds
turn southwest. However, temperatures aloft will keep most of the
precipitation snow, though some rain may be able to mix-in at
lower elevations. The Homer bluff could see some enhanced snowfall
and blowing and drifting snow Sunday.
The snowfall in Anchorage will be largely driven by the
downsloping winds. However, the atmosphere looks to remain
decoupled with the stronger southeast winds remaining aloft and
not mixing out and displacing the northerly surface winds over the
city. This will still minimize the snowfall over the Anchorage
Bowl through tonight with heavier snowfall possible Sunday after
these winds subside.
The Anchorage Hillside is an interesting situation as they will be
in the southeast winds, but looks to remain cold enough for snow.
The question now is whether the strongest winds will still
diminish enough of the snowfall to keep the snow and blowing snow
down some, or whether there will be significant visibility
reductions with large amounts of drifting snow. At this time it
appears the stronger winds will be higher along the mountains to
mitigate impacts where people and houses are, but there may be
areas along the Anchorage (and Eagle River) Hillside which do see
periods of significant blowing and drifting snow tonight.
With the southwest flow aloft, the setup is good for heavy
snowfall in the Susitna Valley which does have a Winter Weather
Advisory this evening through Sunday afternoon.
&&
.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 through 2)...
A mature low continues to march towards the region. High and mid-
level clouds have already made their way to Pilot Point and King
Salmon. The antecedent airmass was very dry, it may take a little
extra time for the column of air to become saturated. The models
continue to show the precipitation shield advancing into Bristol
Bay and the Kuskokwim Delta today. The radar at King Salmon has
already detected light returns south of Port Heiden early this
morning. This system will bring a fresh blanket of snow to many
locations in SW AK. Some locations on the Alaska Peninsula and
near Bristol Bay may see more than one type of
precipitation...rain and snow. There is a strong jet that is going
to move directly over the AKPEN in addition to the pressure
gradient forces associated with the actual low. Its going to get
windy and several locations will see blowing snow.
&&
.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 through 2)...
Unsettled weather on tap for this forecast period...expect
gusty winds, rough seas and precipitation. There is a frontal
boundary with a low near the central Aleutians and an additional
wave developing along the baroclinic zone in the north Pacific.
The leading surface low is on track to move across the Pribilof
Islands later today and into the eastern Bering early Sunday. A
170+ kt jet core is driving this system and places like Dutch
Harbor and Cold Bay will experience stronger than normal winds.
Expecting widespread gales and storm force winds for numerous
marine zones in associated with this system. In the wake of this
frontal passage anticipate cold air advection.
&&
.MARINE (Days 3 through 5 Mon through Wed)...
Cold northerly flow returns to the Bering early next week. There
is moderate confidence that another strong low approaches the
western Aleutians by Wednesday morning.
Meanwhile over the Gulf, southwesterly gales will persist through
Monday. There is potential for embedded storm force winds. A low
in the northern Gulf Monday night will create strong outflow winds
in the usual places along the Alaska Peninsula (Gulf side) and
Kamishak Bay at least through Wednesday. Storm force gusts are
possible, especially through channeled terrain.
&&
.LONG TERM FORECAST (Days 4 through 7 Tue through Fri)...
There is mounting evidence for a highly progressive pattern across
the Bering and southern Mainland next week. An upper level trough
positioned over Mainland Alaska Tuesday afternoon quickly sinks
southward over the Gulf by Wednesday morning. This allows a
building upper level ridge over the Bering to move eastward
Wednesday evening. One feature that model solutions have seemed
to key in on is a stout upper level low interacting with the
ridge over the Bering around Thursday. There is still plenty of
uncertainty with this feature, but run to run consistency has
allowed for increasing confidence in an active pattern for the end
of the week.
&&
.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...Winter Weather Advisory 121 125 145 152 155 161
MARINE...Storm Warning 132 138 150 155 160 165 170 171 172 173 174
175 176 412 414
Gale Warning 119 120 125 130 131 177 179 180 181 185 351
352 411 413
Heavy Freezing Spray Warning 139 177 185 412
FIRE WEATHER...NONE.
&&
SYNOPSIS AND MODEL DISCUSSION...PD
SOUTHCENTRAL ALASKA...EX
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...PJS
MARINE/LONG TERM...KOThe office that day
Everything else NWS Anchorage, AK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 29, 3:31 PM AKST | Gale Warning | AFC | 48 hr | |
| Feb 29, 3:48 PM AKST | Gale Warning | AFC | 12 hr | |
| Feb 29, 3:48 PM AKST | Heavy Freezing Spray Warning | AFC | 4 days | |
| Feb 29, 3:52 PM AKST | Heavy Freezing Spray Warning | AFC | 4 days | |
| Feb 29, 9:28 PM AKST | Blizzard Warning | AFC | 26 hr | |
| Mar 1, 3:32 AM AKST | Gale Warning | AFC | 12 hr | |
| Mar 1, 3:32 AM AKST | Small Craft Advisory | AFC | 6 days | |
| Mar 1, 3:34 AM AKST | Gale Warning | AFC | 12 hr | |
| Mar 1, 3:48 AM AKST | Gale Warning | AFC | 24 hr | |
| Mar 1, 3:48 AM AKST | Small Craft Advisory | AFC | 36 hr | |
| Mar 1, 3:48 AM AKST | Storm Warning | AFC | 24 hr | |
| Mar 1, 3:48 AM AKST | Heavy Freezing Spray Warning | AFC | 5 days |
Nearby
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.