Alert archive / Alaska / Storm Warnings in 2017
Storm Warning 100, NWS Anchorage, AK
NWS Anchorage, AK issued this storm warning at Oct 22, 2017, 2:58 PM AKDT. It was in force for 61 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
- Oct 22, 2017, 2:58 PM AKDT (22:58 UTC)
- Expired
- Oct 25, 2017, 3:58 AM AKDT
- In force
- 61 hr
- Issued by
- NWS Anchorage, AK
The text
As transmitted.
874 FZAK62 PAFC 222258 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 258 PM AKDT Sun Oct 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. PKZ499-231400- 258 PM AKDT Sun Oct 22 2017 .SYNOPSIS FOR CENTRAL BERING SEA... A 994 mb low along the Y-K Delta coast will weaken into a trough of low pressure through Mon night. A West Pacific low will rapidly deepen and move into the western Bering Sea Mon morning then peak in intensity at 938 mb at 54N 168E Tue morning. $$ PKZ411-231400- Bering Sea Offshore West of 180 and East of the International Dateline- 258 PM AKDT Sun Oct 22 2017 ...STORM WARNING MONDAY NIGHT... .TONIGHT...NW wind 10 to 25 kt becoming SE toward morning. Seas 7 to 12 ft. .MON...SE wind 10 to 25 kt increasing to 30 to 45 kt in the afternoon. Seas 7 to 15 ft. Snow and rain. .MON NIGHT...SE wind 45 to 60 kt. Seas 14 to 30 ft. Rain and snow. .TUE...SE wind 45 to 60 kt. Seas 23 to 33 ft. .TUE NIGHT...NE wind 35 to 50 kt. Seas 25 to 38 ft. .WED...N wind 30 to 45 kt. Seas 18 to 33 ft. .THU THROUGH FRI...W wind 10 to 25 kt. Seas 9 to 15 ft. $$ PKZ412-231400- Bering Sea Offshore 171W to 180 and North of 56N- 258 PM AKDT Sun Oct 22 2017 ...STORM WARNING MONDAY NIGHT... .TONIGHT...NW wind 15 to 25 kt. Seas 7 to 11 ft. .MON...N wind 10 to 20 kt. Seas 7 to 11 ft. .MON NIGHT...SE wind 15 to 30 kt increasing to 35 to 50 kt after midnight. Seas 7 to 12 ft building to 10 to 25 ft after midnight. .TUE...E wind 40 to 55 kt. Seas 13 to 21 ft. .TUE NIGHT...SE wind 35 to 50 kt. Seas 18 to 28 ft. .WED...NE wind 20 to 35 kt. Seas 15 to 26 ft. .THU THROUGH FRI...SW wind 10 to 25 kt. Seas 10 to 13 ft. $$ PKZ413-231400- Bering Sea Offshore 171W to 180 and South of 56N- 258 PM AKDT Sun Oct 22 2017 ...STORM WARNING MONDAY NIGHT... .TONIGHT...NW wind 15 to 25 kt. Seas 9 to 13 ft. .MON...NW wind up to 20 kt becoming SW in the afternoon. Seas 9 ft. .MON NIGHT...SE wind 30 to 45 kt increasing to 40 to 55 kt after midnight. Seas 7 to 11 ft building to 14 to 25 ft after midnight. Rain and snow. .TUE...S wind 40 to 55 kt. Seas 16 to 25 ft. .TUE NIGHT...S wind 20 to 35 kt. Seas 20 to 25 ft. .WED...N wind 15 to 30 kt. Seas 16 to 24 ft. .THU THROUGH FRI...SW wind 15 to 30 kt. Seas 11 to 15 ft. $$ PKZ414-231400- Bering Sea Offshore East of 171W- 258 PM AKDT Sun Oct 22 2017 .TONIGHT...NW wind 20 kt. Seas 7 ft. .MON...W wind 10 to 20 kt. Seas 5 to 8 ft. .MON NIGHT...W wind up to 15 kt becoming S 15 to 30 kt after midnight. Seas 6 ft. .TUE...SE wind 35 to 50 kt. Seas 8 to 16 ft. .TUE NIGHT...S wind 30 to 45 kt. Seas 13 to 19 ft. .WED...S wind 15 to 30 kt. Seas 12 to 20 ft. .THU THROUGH FRI...SW wind 15 to 30 kt. Seas 9 to 13 ft. $$
7 follow-up statements
576 FZAK62 PAFC 231151 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 351 AM AKDT Mon Oct 23 2017 Offshore Waters Forecast for the Bering Sea Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ499-240145- 351 AM AKDT Mon Oct 23 2017 .SYNOPSIS FOR CENTRAL BERING SEA... A 1002 mb low at 61N 166W remains nearly stationary and dissipates Mon evening. A 979 mb low at 51N 162E moves to 54N 167E at 935 mb Mon evening. The low then moves to 52N 177W at 952 mb Tue night. $$ PKZ411-240145- Bering Sea Offshore West of 180 and East of the International Dateline- 351 AM AKDT Mon Oct 23 2017 ...STORM WARNING THROUGH TUESDAY... .TODAY...SE wind 15 to 30 kt increasing to 35 to 50 kt in the afternoon. Seas 7 ft building to 8 to 17 ft in the afternoon. Snow and rain. .TONIGHT...SE wind 45 to 60 kt. Seas 14 to 22 ft building to 22 to 32 ft after midnight. Rain. .TUE...E wind 45 to 60 kt. S of 56N...SW wind 25 to 35 kt. Seas 21 to 36 ft. Rain. .TUE NIGHT...NE wind 35 to 50 kt. Seas 25 to 37 ft. .WED...N wind 25 to 40 kt. Seas 16 to 31 ft. .THU...N wind up to 20 kt. Seas 8 to 16 ft. .FRI...NW wind 20 kt. Seas 10 to 13 ft. $$ PKZ412-240145- Bering Sea Offshore 171W to 180 and North of 56N- 351 AM AKDT Mon Oct 23 2017 ...STORM WARNING TONIGHT AND TUESDAY... .TODAY...N wind 10 to 20 kt. Seas 8 to 11 ft. .TONIGHT...E wind 15 to 30 kt becoming SE 35 to 50 kt after midnight. Seas 6 ft building to 8 to 13 ft after midnight. Rain. .TUE...E wind 45 to 60 kt. Seas 15 to 30 ft. Rain and snow. .TUE NIGHT...SE wind 35 to 50 kt. Seas 18 to 30 ft. .WED...NE wind 25 to 40 kt. Seas 14 to 29 ft. .THU THROUGH FRI...W wind 10 to 25 kt. Seas 9 to 14 ft. $$ PKZ413-240145- Bering Sea Offshore 171W to 180 and South of 56N- 351 AM AKDT Mon Oct 23 2017 ...STORM WARNING TONIGHT AND TUESDAY... .TODAY...NW wind up to 20 kt becoming S 10 to 25 kt in the afternoon. Seas 9 ft. Rain. .TONIGHT...SE wind 30 to 45 kt increasing to 40 to 55 kt after midnight. Seas 10 to 18 ft. Rain. .TUE...SE wind 40 to 55 kt becoming SW 25 to 40 kt in the afternoon. Seas 18 to 26 ft. Rain. .TUE NIGHT...S wind 15 to 30 kt. Seas 19 to 24 ft. .WED...N wind 20 to 35 kt. Seas 14 to 22 ft. .THU THROUGH FRI...W wind 15 to 30 kt. Seas 10 to 16 ft. $$ PKZ414-240145- Bering Sea Offshore East of 171W- 351 AM AKDT Mon Oct 23 2017 ...STORM WARNING TUESDAY... .TODAY...W wind 15 kt. Seas 6 ft. .TONIGHT...W wind up to 15 kt becoming S 15 to 30 kt after midnight. Seas 6 ft. .TUE...SE wind 35 to 50 kt. Seas 7 to 12 ft building to 11 to 19 ft in the afternoon. Rain and snow. .TUE NIGHT...S wind 30 to 45 kt. Seas 13 to 20 ft. .WED...SE wind 15 to 30 kt. Seas 11 to 19 ft. .THU THROUGH FRI...SW wind 15 to 30 kt. Seas 7 to 12 ft. $$
949 FZAK62 PAFC 232330 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 330 PM AKDT Mon Oct 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. PKZ499-241315- 330 PM AKDT Mon Oct 23 2017 .SYNOPSIS FOR CENTRAL BERING SEA... A 1003 mb low at 49N 157W will move into the western Gulf by Tue morning. A 953 mb low at 54N 165E will move to 52N 172E at 935 mb by Tue afternoon.Then it will move to 53N 171W at 965 mb by Wed afternoon. $$ PKZ411-241315- Bering Sea Offshore West of 180 and East of the International Dateline- 330 PM AKDT Mon Oct 23 2017 ...STORM WARNING THROUGH TUESDAY NIGHT... .TONIGHT...SE wind 45 to 60 kt. Seas 15 to 30 ft. Rain. .TUE...E wind 45 to 60 kt. Seas 21 to 36 ft. Rain. .TUE NIGHT...NE wind 40 to 55 kt. Seas 25 to 39 ft. .WED...N wind 30 to 45 kt. Seas 22 to 31 ft. .WED NIGHT...N wind 20 to 35 kt. Seas 15 to 23 ft. .THU...NE wind up to 20 kt. Seas 9 to 14 ft. .FRI THROUGH SAT...N wind 10 to 20 kt. Seas 8 to 13 ft. $$ PKZ412-241315- Bering Sea Offshore 171W to 180 and North of 56N- 330 PM AKDT Mon Oct 23 2017 ...STORM WARNING THROUGH TUESDAY NIGHT... .TONIGHT...E wind 15 to 30 kt becoming SE 35 to 50 kt after midnight. Seas 6 ft building to 8 to 13 ft after midnight. Rain. .TUE...E wind 45 to 60 kt. Seas 15 to 30 ft. Rain and snow. .TUE NIGHT...SE wind 40 to 55 kt diminishing to 30 to 45 kt after midnight. Seas 19 to 30 ft. Rain. .WED...NE wind 15 to 30 kt. Seas 17 to 28 ft. .WED NIGHT...N wind 15 to 30 kt. Seas 12 to 19 ft. .THU...NW wind 10 to 25 kt. Seas 10 to 14 ft. .FRI THROUGH SAT...W wind up to 20 kt. Seas 7 to 12 ft. $$ PKZ413-241315- Bering Sea Offshore 171W to 180 and South of 56N- 330 PM AKDT Mon Oct 23 2017 ...STORM WARNING THROUGH TUESDAY... .TONIGHT...SE wind 30 to 45 kt increasing to 40 to 55 kt after midnight. Seas 10 to 18 ft. Rain. .TUE...SE wind 40 to 55 kt becoming SW 25 to 40 kt in the afternoon. Seas 19 to 25 ft. Rain. .TUE NIGHT...SE wind 15 to 30 kt. Seas 20 to 24 ft. .WED...NE wind 15 to 30 kt. Seas 15 to 23 ft. .WED NIGHT...NW wind 15 to 30 kt. Seas 12 to 18 ft. .THU THROUGH SAT...SW wind 10 to 25 kt. Seas 8 to 13 ft. $$ PKZ414-241315- Bering Sea Offshore East of 171W- 330 PM AKDT Mon Oct 23 2017 ...STORM WARNING TUESDAY... .TONIGHT...W wind up to 15 kt becoming S 15 to 30 kt after midnight. Seas 4 to 7 ft. Rain. .TUE...SE wind 35 to 50 kt. Seas 7 to 12 ft building to 11 to 19 ft in the afternoon. Rain and snow. .TUE NIGHT...S wind 30 to 45 kt diminishing to 25 kt after midnight. Seas 12 to 19 ft. Rain. .WED...SE wind 15 to 30 kt. Seas 12 to 19 ft. .WED NIGHT...E wind 15 to 30 kt. Seas 11 to 17 ft. .THU...W wind 10 to 25 kt. Seas 7 to 11 ft. .FRI THROUGH SAT...S wind 15 to 25 kt. Seas 7 to 12 ft. $$
207 FZAK62 PAFC 241158 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 358 AM AKDT Tue Oct 24 2017 Offshore Waters Forecast for the Bering Sea Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ499-250045- 358 AM AKDT Tue Oct 24 2017 .SYNOPSIS FOR CENTRAL BERING SEA... A 934 mb low at 54N 168E Tue morning will move to 52N 176W by Wed morning, then moves to 56N 165W Thu morning. A strong front will cross the Alaska Peninsula and western Gulf during this time. $$ PKZ411-250045- Bering Sea Offshore West of 180 and East of the International Dateline- 358 AM AKDT Tue Oct 24 2017 ...STORM WARNING THROUGH TONIGHT... .TODAY...E wind 45 to 60 kt. Seas 22 to 37 ft. Rain. .TONIGHT...NE wind 40 to 55 kt. Seas 24 to 38 ft. .WED...N wind 30 to 45 kt. Seas 22 to 31 ft. .WED NIGHT...N wind 20 to 35 kt. Seas 16 to 24 ft. .THU...NE wind 10 to 25 kt. Seas 9 to 14 ft. .FRI THROUGH SAT...N wind 10 to 20 kt. Seas 7 to 12 ft. $$ PKZ412-250045- Bering Sea Offshore 171W to 180 and North of 56N- 358 AM AKDT Tue Oct 24 2017 ...STORM WARNING THROUGH TONIGHT... .TODAY...E wind 45 to 60 kt. Seas 15 to 30 ft. Rain and snow. .TONIGHT...SE wind 40 to 55 kt diminishing to 30 to 45 kt after midnight. Seas 19 to 30 ft. Rain. .WED...NE wind 15 to 30 kt. Seas 17 to 26 ft. .WED NIGHT...N wind 15 to 30 kt. Seas 12 to 20 ft. .THU...NW wind 10 to 25 kt. Seas 8 to 13 ft. .FRI...W wind up to 20 kt. Seas 4 to 9 ft. .SAT...N wind up to 15 kt. Seas 5 to 8 ft. $$ PKZ413-250045- Bering Sea Offshore 171W to 180 and South of 56N- 358 AM AKDT Tue Oct 24 2017 ...STORM WARNING TODAY... .TODAY...SE wind 40 to 55 kt becoming SW 25 to 40 kt in the afternoon. Seas 19 to 26 ft. Rain. .TONIGHT...SE wind 15 to 30 kt. Seas 19 to 25 ft. .WED...N wind 15 to 30 kt. Seas 15 to 22 ft. .WED NIGHT...NW wind 15 to 30 kt. Seas 13 to 20 ft. .THU THROUGH FRI...W wind 15 to 30 kt. Seas 8 to 13 ft. .SAT...NW wind up to 15 kt. Seas 4 to 9 ft. $$ PKZ414-250045- Bering Sea Offshore East of 171W- 358 AM AKDT Tue Oct 24 2017 ...STORM WARNING TODAY... .TODAY...SE wind 35 to 50 kt. Seas 10 to 18 ft. Rain. .TONIGHT...S wind 30 to 45 kt diminishing to 25 kt after midnight. Seas 13 to 19 ft. Rain. .WED...SE wind 15 to 30 kt. Seas 12 to 20 ft. .WED NIGHT...E wind 15 to 30 kt. Seas 10 to 18 ft. .THU...W wind 10 to 25 kt. Seas 7 to 11 ft. .FRI...SW wind 15 to 25 kt. Seas 5 to 10 ft. .SAT...S wind up to 15 kt. Seas 5 to 8 ft. $$
182 FZAK62 PAFC 241229 CCA OFFALU Offshore Waters Forecast...CORRECTED National Weather Service Anchorage AK 429 AM AKDT Tue Oct 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. PKZ499-250045- 358 AM AKDT Tue Oct 24 2017 .SYNOPSIS FOR CENTRAL BERING SEA... A 934 mb low at 54N 168E Tue morning will move to 52N 176W at 949 mb by Wed morning, then moves to 56N 165W at 975 mb by Thu morning. A strong front will cross the Alaska Peninsula and western Gulf during this time. $$ PKZ411-250045- Bering Sea Offshore West of 180 and East of the International Dateline- 358 AM AKDT Tue Oct 24 2017 ...STORM WARNING THROUGH TONIGHT... .TODAY...E wind 45 to 60 kt. Seas 22 to 37 ft. Rain. .TONIGHT...NE wind 40 to 55 kt. Seas 24 to 38 ft. .WED...N wind 30 to 45 kt. Seas 22 to 31 ft. .WED NIGHT...N wind 20 to 35 kt. Seas 16 to 24 ft. .THU...NE wind 10 to 25 kt. Seas 9 to 14 ft. .FRI THROUGH SAT...N wind 10 to 20 kt. Seas 7 to 12 ft. $$ PKZ412-250045- Bering Sea Offshore 171W to 180 and North of 56N- 358 AM AKDT Tue Oct 24 2017 ...STORM WARNING THROUGH TONIGHT... .TODAY...E wind 45 to 60 kt. Seas 15 to 30 ft. Rain and snow. .TONIGHT...SE wind 40 to 55 kt diminishing to 30 to 45 kt after midnight. Seas 19 to 30 ft. Rain. .WED...NE wind 15 to 30 kt. Seas 17 to 26 ft. .WED NIGHT...N wind 15 to 30 kt. Seas 12 to 20 ft. .THU...NW wind 10 to 25 kt. Seas 8 to 13 ft. .FRI...W wind up to 20 kt. Seas 4 to 9 ft. .SAT...N wind up to 15 kt. Seas 5 to 8 ft. $$ PKZ413-250045- Bering Sea Offshore 171W to 180 and South of 56N- 358 AM AKDT Tue Oct 24 2017 ...STORM WARNING TODAY... .TODAY...SE wind 40 to 55 kt becoming SW 25 to 40 kt in the afternoon. Seas 19 to 26 ft. Rain. .TONIGHT...SE wind 15 to 30 kt. Seas 19 to 25 ft. .WED...N wind 15 to 30 kt. Seas 15 to 22 ft. .WED NIGHT...NW wind 15 to 30 kt. Seas 13 to 20 ft. .THU THROUGH FRI...W wind 15 to 30 kt. Seas 8 to 13 ft. .SAT...NW wind up to 15 kt. Seas 4 to 9 ft. $$ PKZ414-250045- Bering Sea Offshore East of 171W- 358 AM AKDT Tue Oct 24 2017 ...STORM WARNING TODAY... .TODAY...SE wind 35 to 50 kt. Seas 10 to 18 ft. Rain. .TONIGHT...S wind 30 to 45 kt diminishing to 25 kt after midnight. Seas 13 to 19 ft. Rain. .WED...SE wind 15 to 30 kt. Seas 12 to 20 ft. .WED NIGHT...E wind 15 to 30 kt. Seas 10 to 18 ft. .THU...W wind 10 to 25 kt. Seas 7 to 11 ft. .FRI...SW wind 15 to 25 kt. Seas 5 to 10 ft. .SAT...S wind up to 15 kt. Seas 5 to 8 ft. $$
729 FZAK62 PAFC 242346 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 346 PM AKDT Tue Oct 24 2017 Offshore Waters Forecast for the Bering Sea Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ499-251345- 346 PM AKDT Tue Oct 24 2017 .SYNOPSIS FOR CENTRAL BERING SEA... A 940 mb low at 51N 175E will weaken and move to 53N 170W at 964 mb by Wed afternoon...then it will move to 59N 163W at 986 mb by Thu afternoon. A front associated with a low near Kamchatka will approach the western Aleutians by Thu afternoon. $$ PKZ411-251345- Bering Sea Offshore West of 180 and East of the International Dateline- 346 PM AKDT Tue Oct 24 2017 ...STORM WARNING TONIGHT... .TONIGHT...NE wind 40 to 55 kt. Seas 25 to 38 ft. Rain with snow. .WED...N wind 30 to 45 kt. Seas 21 to 31 ft. .WED NIGHT...N wind 20 to 35 kt diminishing to 10 to 25 kt after midnight. Seas 15 to 23 ft. .THU...E wind 15 to 30 kt. Seas 9 to 14 ft. .THU NIGHT...NE wind 10 to 25 kt. Seas 8 to 12 ft. .FRI THROUGH SUN...N wind 10 to 25 kt. Seas 6 to 11 ft. $$ PKZ412-251345- Bering Sea Offshore 171W to 180 and North of 56N- 346 PM AKDT Tue Oct 24 2017 ...STORM WARNING TONIGHT... .TONIGHT...N of 58 N...NE wind 40 to 55 kt diminishing to 30 to 45 kt after midnight. S of 58 N...S wind 15 to 25 kt. Seas 19 to 29 ft. Rain. .WED...W of 177 W...NE wind 30 to 45 kt. E of 177 W...SE wind 10 to 20 kt. Seas 17 to 28 ft. Rain and snow. .WED NIGHT...N wind 25 to 40 kt diminishing to 20 to 30 kt after midnight. Seas 14 to 22 ft. .THU...NW wind 15 to 30 kt. Seas 10 to 16 ft. .THU NIGHT...NW wind up to 20 kt. Seas 6 to 10 ft. .FRI...W wind 10 to 25 kt. Seas 6 to 9 ft. .SAT THROUGH SUN...N wind up to 15 kt. Seas 5 to 9 ft. $$ PKZ413-251345- Bering Sea Offshore 171W to 180 and South of 56N- 346 PM AKDT Tue Oct 24 2017 ...GALE WARNING WEDNESDAY AND WEDNESDAY NIGHT... .TONIGHT...SE wind 15 to 30 kt. Seas 19 to 24 ft. Rain showers. .WED...N wind 25 to 40 kt. Seas 16 to 24 ft. .WED NIGHT...NW wind 25 to 40 kt. Seas 14 to 22 ft. .THU...NW wind 15 to 30 kt. Seas 10 to 17 ft. .THU NIGHT...SW wind 10 to 25 kt. Seas 7 to 12 ft. .FRI...SW wind 10 to 25 kt. Seas 7 to 10 ft. .SAT...NW wind up to 15 kt. Seas 4 to 9 ft. .SUN...N wind up to 20 kt. Seas 5 to 10 ft. $$ PKZ414-251345- Bering Sea Offshore East of 171W- 346 PM AKDT Tue Oct 24 2017 ...GALE WARNING TONIGHT... .TONIGHT...S wind 30 to 45 kt becoming SW 25 kt after midnight. Seas 13 to 18 ft. Rain showers. .WED...SE wind 15 to 30 kt. Seas 12 to 19 ft. .WED NIGHT...E wind 15 to 30 kt. Seas 9 to 17 ft. .THU...NW wind 15 to 30 kt. Seas 7 to 12 ft. .THU NIGHT...W wind 15 to 25 kt. Seas 7 to 11 ft. .FRI THROUGH SAT...S wind 10 to 25 kt. Seas 5 to 10 ft. .SUN...E wind 10 kt. Seas 4 to 7 ft. $$
692 FZAK62 PAFC 250511 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 911 PM AKDT Tue Oct 24 2017 Updated Zones 412-414 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. PKZ499-251815- 911 PM AKDT Tue Oct 24 2017 .SYNOPSIS FOR CENTRAL BERING SEA... A 940 mb low at 51N 175E will weaken and move to 53N 170W at 964 mb by Wed afternoon...then it will move to 59N 163W at 986 mb by Thu afternoon. A front associated with a low near Kamchatka will approach the western Aleutians by Thu afternoon. $$ PKZ411-251815- Bering Sea Offshore West of 180 and East of the International Dateline- 911 PM AKDT Tue Oct 24 2017 ...STORM WARNING TONIGHT... .TONIGHT...NE wind 40 to 55 kt. Seas 25 to 38 ft. Rain with snow. .WED...N wind 30 to 45 kt. Seas 21 to 31 ft. .WED NIGHT...N wind 20 to 35 kt diminishing to 10 to 25 kt after midnight. Seas 15 to 23 ft. .THU...E wind 15 to 30 kt. Seas 9 to 14 ft. .THU NIGHT...NE wind 10 to 25 kt. Seas 8 to 12 ft. .FRI THROUGH SUN...N wind 10 to 25 kt. Seas 6 to 11 ft. $$ PKZ412-251815- Bering Sea Offshore 171W to 180 and North of 56N- 911 PM AKDT Tue Oct 24 2017 ...STORM WARNING TONIGHT... .TONIGHT...N of 58 N...NE wind 40 to 55 kt diminishing to 30 to 45 kt after midnight. S of 58 N...S wind 15 to 25 kt. Seas 19 to 29 ft. Rain. .WED...W of 177 W...NE wind 30 to 45 kt. E of 177 W...SE wind 10 to 20 kt. Seas 17 to 28 ft. Rain and snow. Isolated thunderstorms. .WED NIGHT...N wind 25 to 40 kt diminishing to 20 to 30 kt after midnight. Seas 14 to 22 ft. .THU...NW wind 15 to 30 kt. Seas 10 to 16 ft. .THU NIGHT...NW wind up to 20 kt. Seas 6 to 10 ft. .FRI...W wind 10 to 25 kt. Seas 6 to 9 ft. .SAT THROUGH SUN...N wind up to 15 kt. Seas 5 to 9 ft. $$ PKZ413-251815- Bering Sea Offshore 171W to 180 and South of 56N- 911 PM AKDT Tue Oct 24 2017 ...GALE WARNING WEDNESDAY AND WEDNESDAY NIGHT... .TONIGHT...SE wind 15 to 30 kt. Seas 19 to 24 ft. Rain showers. Scattered thunderstorms. .WED...N wind 25 to 40 kt. Seas 16 to 24 ft. Isolated thunderstorms. .WED NIGHT...NW wind 25 to 40 kt. Seas 14 to 22 ft. .THU...NW wind 15 to 30 kt. Seas 10 to 17 ft. .THU NIGHT...SW wind 10 to 25 kt. Seas 7 to 12 ft. .FRI...SW wind 10 to 25 kt. Seas 7 to 10 ft. .SAT...NW wind up to 15 kt. Seas 4 to 9 ft. .SUN...N wind up to 20 kt. Seas 5 to 10 ft. $$ PKZ414-251815- Bering Sea Offshore East of 171W- 911 PM AKDT Tue Oct 24 2017 ...GALE WARNING TONIGHT... .TONIGHT...S wind 30 to 45 kt becoming SW 25 kt after midnight. Seas 13 to 18 ft. Rain showers. Scattered thunderstorms after midnight. .WED...SE wind 15 to 30 kt. Seas 12 to 19 ft. Isolated thunderstorms. .WED NIGHT...E wind 15 to 30 kt. Seas 9 to 17 ft. .THU...NW wind 15 to 30 kt. Seas 7 to 12 ft. .THU NIGHT...W wind 15 to 25 kt. Seas 7 to 11 ft. .FRI THROUGH SAT...S wind 10 to 25 kt. Seas 5 to 10 ft. .SUN...E wind 10 kt. Seas 4 to 7 ft. $$
213 FZAK62 PAFC 251158 OFFALU Offshore Waters Forecast National Weather Service Anchorage AK 358 AM AKDT Wed Oct 25 2017 Offshore Waters Forecast for the Bering Sea Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ499-260115- 358 AM AKDT Wed Oct 25 2017 .SYNOPSIS FOR CENTRAL BERING SEA... A 956 mb low at 52N 176W Wed morning will move to 55N 165W at 980 mb Thu morning, and then to 64N 165W at 990 mb Fri morning. A Kamchatka low will deepen to 989 mb and move to 52N 167E Fri morning, with a front moving north from the western Aleutians into the western Bering Sea. $$ PKZ411-260115- Bering Sea Offshore West of 180 and East of the International Dateline- 358 AM AKDT Wed Oct 25 2017 ...GALE WARNING THROUGH TONIGHT... .TODAY...N wind 30 to 45 kt. Seas 21 to 30 ft. Rain. .TONIGHT...N wind 20 to 35 kt diminishing to 10 to 25 kt after midnight. Seas 15 to 23 ft. .THU...NE wind up to 20 kt becoming E 15 to 30 kt in the afternoon. Seas 10 to 14 ft. Rain showers. .THU NIGHT...NE wind 10 to 25 kt. Seas 8 to 12 ft. .FRI THROUGH SUN...NW wind 10 to 25 kt. Seas 6 to 11 ft. $$ PKZ412-260115- Bering Sea Offshore 171W to 180 and North of 56N- 358 AM AKDT Wed Oct 25 2017 ...GALE WARNING THROUGH TONIGHT... .TODAY...N to E wind 30 to 45 kt. Seas 18 to 29 ft. Rain. .TONIGHT...N wind 25 to 40 kt diminishing to 20 to 30 kt after midnight. Seas 14 to 22 ft. .THU...NW wind 15 to 30 kt. Seas 11 to 15 ft. .THU NIGHT...NW wind up to 20 kt. Seas 6 to 10 ft. .FRI THROUGH SAT...NE wind 10 to 25 kt. Seas 5 to 10 ft. .SUN...N wind 20 to 30 kt. Seas 7 to 12 ft. $$ PKZ413-260115- Bering Sea Offshore 171W to 180 and South of 56N- 358 AM AKDT Wed Oct 25 2017 ...GALE WARNING THROUGH TONIGHT... .TODAY...N to E wind 25 to 40 kt. Seas 15 to 25 ft. .TONIGHT...NW wind 25 to 40 kt. Seas 15 to 23 ft. .THU...NW wind 15 to 30 kt. Seas 10 to 17 ft. .THU NIGHT...SW wind 10 to 25 kt. Seas 7 to 11 ft. .FRI...SW wind 10 to 25 kt. Seas 7 to 11 ft. .SAT THROUGH SUN...NW wind 15 to 30 kt. Seas 7 to 12 ft. $$ PKZ414-260115- Bering Sea Offshore East of 171W- 358 AM AKDT Wed Oct 25 2017 .TODAY...S to E wind 15 to 30 kt. Seas 12 to 19 ft. .TONIGHT...E wind 15 to 30 kt. Seas 9 to 16 ft. .THU...NW wind 15 to 30 kt. Seas 6 to 11 ft. .THU NIGHT...W wind 15 to 25 kt. Seas 6 to 10 ft. .FRI...S wind 10 to 25 kt. Seas 7 to 10 ft. .SAT...SE wind up to 20 kt. Seas 5 to 9 ft. .SUN...N wind 10 to 25 kt. Seas 6 to 11 ft. $$
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 Oct 22, 5:01 AM AKDT, 9 hours 57 minutes earlier.
Area forecast discussion, Oct 22, 5:01 AM AKDT, 9 hours 57 minutes before
Southcentral and Southwest Alaska Forecast Discussion
National Weather Service Anchorage AK
501 AM AKDT Sun Oct 22 2017
.ANALYSIS AND UPPER LEVELS...
The cold, vertically stacked parent low over the west coast
dominates the pattern as it continues to sink south. As it does
so, it is dragging plenty of cold air from the Bering Strait all
the way into the Cook Inlet region. Several individual pieces of
energy embedded within the cold air are moving counter-clockwise
around the low as well. The first wave was the one that brought
snow to much of the Cook Inlet and Prince William Sound area on
Saturday. This feature is moving off to the north and east as it
falls apart. However, in its wake, there are still quite a few
snow showers courtesy of southwest flow aloft and some low
stratus, especially over the Kenai Peninsula. The story is much
the same across Southwest AK. Where snow showers are not occurring,
low stratus/fog is trying to fill in. Meanwhile, northerly flow
is making for widespread cold air advection showers across the
entire Bering. A potent 155-165 kt remains well south of the
state near 50N. While it has been pretty much zonal (west to east)
the past week or so, it is starting to show some signs of
amplifying over the Western Bering.
&&
.MODEL DISCUSSION...
Models are having fits with this pattern. This is resulting in
low confidence in the forecast beyond 24 hours over mainland AK.
The weak waves rotating around the parent low in the cold air are
proving very challenging for the models to resolve. The first
issue is with the continuing light snow across Cook Inlet this
morning. There is some uncertainty is how much longer it lasts,
but radar is trending weaker and weaker. The next feature will be
a low that moves inland over Bristol Bay tonight. The NAM wants to
paint this feature further west over Dillingham while all other
models hold it east near Iliamna. This forecast is based upon the
further east solutions. Then attention will shift to a low
tracking from south to north in the western Gulf early Tue. The EC
is much faster with this feature than the other models in how it
arrives in the northern Gulf, however, they all end up in roughly
the same spot. The EC was preferred with this. Then there is the
very deep low developing Mon over the Western Bering. Thankfully,
models are in good agreement with this feature, so confidence is
much higher. But how this system tracks east and interacts with
the cold air over the mainland remains hazy.
&&
.AVIATION...
PANC...Light snow should continue to dissipate through the
morning. Lower ceilings could hang on for a few hours after it
ends, but visibility should readily improve to VFR. The rest of
the day will feature VFR conditions with a shift from SE to NE
winds late.
&&
.SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2...Sun and
Mon)... The main upper level low will remain along the west coast
of Alaska through Monday night. This will send a series of weak
upper level disturbances through the northern Gulf and
Southcentral Alaska. The exact timing and strength of these
disturbances is not well agreed upon by the models, but the
general consensus is that they will be fairly weak and unlikely to
produce very much precipitation (if any). There is a chance of
snow inland this morning with the departing system that brought
snow yesterday, and this will be generally north of Anchorage.
Another weak system crosses the area later this afternoon into
tonight, with a low probability of snow. On Monday, precipitation
should spread across Kodiak, and some will spread inland Monday
night. Due to the model uncertainty, probabilities of
precipitation were generally kept in the chance to slight chance
range.
&&
.SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 through 3...Sun
through Tue)...
A weakening area of low pressure situated over the YK-Delta will
continue to help create showers along the Southwest coast of
Alaska through Tuesday morning. Models are starting to become more
aggressive with a series of shortwaves rotating around this low
pressure system that will impact the Bristol Bay area Monday and
early Tuesday. These waves are expected to bring some light
snowfall to the Bristol Bay area with minor accumulations.
However, one stronger wave on Monday will develop into a closed
low and bring the potential for 3 to 6 inches of snowfall near
Iliamna by Tuesday morning. The snowfall will result from a
deformation band that sets up over the region but as typical
models are struggling on the placement of this feature. At this
moment, model spread varies from Dillingham to Iliamna but models
are clustering on the Iliamna solution. A winter weather advisory
was considered for this system on Monday but with poor confidence
at the moment the decision to not issue with the morning package
was justified. Otherwise, the cold pattern will continue with a
warm up expected by midweek.
&&
.SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 through 3...Sun
through Tue)...
High pressure has continued to build across the western Bering Sea
this morning but the period of calmer weather will be rather short
lived. An extratropical low pressure system will develop near the
tip of Kamchatka tonight as typhoon Lan weakens over the western
Pacific. While typhoon Lan is expected to dissipate over the
northwestern Pacific Ocean on Monday, a lot of the moisture and
energy associated with the low will be absorbed into the
extratropical low moving along the Kamchatka Peninsula. The
cyclone near Kamchatka is expected to undergo rapid cyclogenesis
(drops from 979 mb Monday at 12Z to 938 mb Tuesday at 12Z) as it
moves into the southwest Bering Sea Tuesday morning.
Ahead of the low will be a very impressive front that rapidly
occludes over the Bering Sea. Widespread 50 to 60 kt winds are
expected over the western two-thirds of the Bering Sea Monday and
Tuesday with gusts up to 75 kts over the far western Bering Sea.
A high wind watch has been issued for the western and central
Aleutians where winds upwards to 80-85 mph are possible. The
strongest winds will likely be east of Shemya but a subtle change
in low track will change the frontal orientation and bring
stronger winds into Shemya. On top of this, seas of 25 to 35 feet
will be common in the western Bering on Tuesday while seas upwards
to 45 to 50 feet could be seen on the Pacific side of the Aleutian
Islands on Tuesday. This system should be closely monitored in
the coming days.
&&
.LONG TERM FORECAST (Days 3 through 7...from previous discussion)...
An active pattern is expected to continue during the long range
forecast through the middle of next week, with the focus being on
the remnants of Typhoon Lan entering the Bering and upper level
disturbances over the Gulf tracking into Southcentral.
The moisture rich and storm force remnants of Typhoon Lan will
push into the western Aleutians/Bering Monday evening in the form
of a warm front, also bringing some warmer temperatures and rain
to the area through mid-week. Models remain in good agreement up
until this point, but confidence begins to wane as the models
begin struggling more with the track and timing of the system
central and eastern Bering through Thursday. Thus giving us less
confidence on the timing, placement, and strength of any potential
wind threats and precipitation over the Aleutians and Bering as
the leading front passes over. This system will eventually spread
gusty winds and rain over the southern Mainland Wednesday morning
through the end of the week.
The other features we are monitoring are a series of upper level
waves tracking through the Gulf and into Southcentral Monday
evening through Wednesday. Given the cold air already in place
over the area, these waves bring potential for snow to make it
into Southcentral, with potential for moderate to heavy snowfall
along the Northern Gulf coast, Susitna Valley, and Copper river
Basin areas. The only caveat to that is that the models are
struggling with where and when these smaller systems develop and
when they eventually track.
&&
.AFC WATCHES/WARNINGS/ADVISORIES...
PUBLIC...High Wind Watch 187 191.
MARINE...Storm Warning 178 411.
Gale Warning 177.
&&
SYNOPSIS AND MODEL DISCUSSION...MSO
SOUTHCENTRAL ALASKA...BL
SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...MC
LONG TERM...TPIn the hours before
Local storm report, Oct 22, 11:05 AM AKDT, 3 hours 53 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ANCHORAGE AK
1105 AM AKDT SUN OCT 22 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0530 AM SNOW PALMER 61.60N 149.11W
10/22/2017 M2.0 INCH AK NWS EMPLOYEE
&&
RANDERSOThe office that day
Everything else NWS Anchorage, AK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 22, 3:55 AM AKDT | Small Craft Advisory | AFC | 16 hr | |
| Oct 22, 4:00 AM AKDT | Gale Warning | AFC | 11 hr | |
| Oct 22, 4:00 AM AKDT | Storm Warning | AFC | 3 days | |
| Oct 22, 4:14 AM AKDT | Storm Warning | AFC | 72 hr | |
| Oct 22, 4:18 AM AKDT | High Wind Watch | AFC | 11 hr | |
| Oct 22, 3:10 PM AKDT | Gale Warning | AFC | 13 hr | |
| Oct 22, 3:10 PM AKDT | Small Craft Advisory | AFC | 13 hr | |
| Oct 22, 3:10 PM AKDT | Storm Warning | AFC | 61 hr | |
| Oct 22, 3:15 PM AKDT | High Wind Warning | AFC | 40 hr | |
| Oct 22, 3:16 PM AKDT | Winter Weather Advisory | AFC | 25 hr | |
| Oct 22, 3:31 PM AKDT | Small Craft Advisory | AFC | 36 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.