Alert archive / Alaska / Gale Warnings in 2017
Gale Warning 578, NWS Anchorage, AK
NWS Anchorage, AK issued this gale warning at Nov 18, 2017, 3:44 AM AKST. It was in force for 4 days. 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 18, 2017, 3:44 AM AKST (12:44 UTC)
- Expired
- Nov 22, 2017, 3:22 PM AKST
- In force
- 4 days
- Issued by
- NWS Anchorage, AK
The text
As transmitted.
076 FZAK61 PAFC 181244 OFFAER Offshore Waters Forecast National Weather Service Anchorage AK 344 AM AKST Sat Nov 18 2017 Offshore waters forecast for the Gulf of Alaska West of 144W 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. PKZ399-190215- 344 AM AKST Sat Nov 18 2017 .SYNOPSIS FOR THE WESTERN GULF OF ALASKA... A 997 mb low at 56N 142W will move to 54N 141W at 1001 mb Sat afternoon and then dissipate. A 987 mb low at 58N 153W early Sun morning will move to 54N 151W and strengthen to 970 mb by Sun afternoon. $$ PKZ351-190215- Gulf of Alaska Offshore North of 57N and West of 144W- 344 AM AKST Sat Nov 18 2017 ...GALE WARNING SUNDAY... .TODAY...N wind 10 to 20 kt. Seas 7 ft. .TONIGHT...N wind up to 15 kt becoming SW after midnight. Seas 3 to 6 ft. Rain and snow. .SUN...SE wind 20 to 35 kt. Seas 4 to 9 ft. Rain and snow. .SUN NIGHT...E wind 30 to 45 kt. Seas 10 to 18 ft. .MON...NE wind 30 to 45 kt. Seas 12 to 20 ft. .TUE THROUGH WED...NW wind up to 20 kt. Seas 4 to 9 ft. $$ PKZ352-190215- Gulf of Alaska Offshore South of 57N North of 55N and West of 144W- 344 AM AKST Sat Nov 18 2017 ...GALE WARNING SUNDAY... .TODAY...NW wind 10 to 25 kt. Seas 7 to 12 ft. .TONIGHT...NW wind 15 kt becoming SW after midnight. Seas 5 to 8 ft. Rain and snow. .SUN...SW wind 25 to 40 kt. Seas 8 to 13 ft. Rain and snow. .SUN NIGHT...SW wind 25 to 40 kt. Seas 9 to 17 ft. .MON...NE wind 25 to 40 kt. Seas 9 to 17 ft. .TUE THROUGH WED...NW wind 10 to 25 kt. Seas 5 to 10 ft. $$
9 follow-up statements
857 FZAK61 PAFC 190035 OFFAER Offshore Waters Forecast National Weather Service Anchorage AK 335 PM AKST Sat Nov 18 2017 Offshore waters forecast for the Gulf of Alaska West of 144W Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ399-191415- 335 PM AKST Sat Nov 18 2017 .SYNOPSIS FOR THE WESTERN GULF OF ALASKA... A 988 mb low will move to 58N 151W by Sun morning then it will move to 57N 150W as it intensifies to 973 mb Sun afternoon. It will then move to 52N 151W at 982 mb by Mon afternoon. $$ PKZ351-191415- Gulf of Alaska Offshore North of 57N and West of 144W- 335 PM AKST Sat Nov 18 2017 ...GALE WARNING SUNDAY AND SUNDAY NIGHT... .TONIGHT...N wind up to 15 kt becoming SW after midnight. Seas 5 ft. Snow. .SUN...S to E wind 20 to 35 kt. Seas 7 to 12 ft. Rain and snow. .SUN NIGHT...E wind 30 to 45 kt. Seas 11 to 17 ft. Rain. .MON...E wind 30 to 45 kt. Seas 15 to 21 ft. .MON NIGHT...NE wind 15 to 30 kt. Seas 9 to 16 ft. .TUE THROUGH THU...SW wind up to 20 kt. Seas 4 to 9 ft. $$ PKZ352-191415- Gulf of Alaska Offshore South of 57N North of 55N and West of 144W- 335 PM AKST Sat Nov 18 2017 ...STORM WARNING SUNDAY NIGHT... .TONIGHT...W wind 15 to 30 kt. Seas 7 ft. Rain. .SUN...S to W wind 25 to 40 kt. Seas 5 to 10 ft building to 9 to 16 ft in the afternoon. Rain. .SUN NIGHT...SW wind 35 to 50 kt becoming SE after midnight. Seas 12 to 20 ft. .MON...E wind 20 to 35 kt. Seas 9 to 17 ft. .MON NIGHT...NE wind 20 to 35 kt. Seas 9 to 17 ft. .TUE THROUGH THU...W wind 10 to 25 kt. Seas 5 to 10 ft. $$
110 FZAK61 PAFC 191231 OFFAER Offshore Waters Forecast National Weather Service Anchorage AK 331 AM AKST Sun Nov 19 2017 Offshore waters forecast for the Gulf of Alaska West of 144W 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. PKZ399-200200- 331 AM AKST Sun Nov 19 2017 .SYNOPSIS FOR THE WESTERN GULF OF ALASKA... A 988 mb low at 58N 153W moves to 54N 149W at 966 mb Mon morning then it moves into the North Pacific through Tue morning. $$ PKZ351-200200- Gulf of Alaska Offshore North of 57N and West of 144W- 331 AM AKST Sun Nov 19 2017 ...GALE WARNING THROUGH MONDAY... .TODAY...SE wind 20 to 35 kt. Seas 4 to 12 ft. Rain and snow. .TONIGHT...E wind 30 to 45 kt. Seas 10 to 18 ft. Rain. .MON...E wind 30 to 45 kt. Seas 15 to 21 ft. Rain. .MON NIGHT...NE wind 15 to 30 kt. Seas 10 to 16 ft. .TUE...N wind up to 20 kt. Seas 6 to 11 ft. .WED THROUGH THU...SW wind 10 to 25 kt. Seas 4 to 9 ft. $$ PKZ352-200200- Gulf of Alaska Offshore South of 57N North of 55N and West of 144W- 331 AM AKST Sun Nov 19 2017 ...STORM WARNING TONIGHT... .TODAY...SW wind 30 to 45 kt. Seas 9 to 16 ft. Rain. .TONIGHT...SW wind 35 to 50 kt becoming SE after midnight. Seas 11 to 22 ft. .MON...E wind 20 to 35 kt. Seas 9 to 18 ft. Rain. .MON NIGHT...NE wind 20 to 35 kt. Seas 9 to 17 ft. .TUE THROUGH WED...NW wind 10 to 25 kt. Seas 7 to 12 ft. .THU...W wind 15 to 25 kt. Seas 7 to 12 ft. $$
440 FZAK61 PAFC 200034 OFFAER Offshore Waters Forecast National Weather Service Anchorage AK 334 PM AKST Sun Nov 19 2017 Offshore waters forecast for the Gulf of Alaska West of 144W Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ399-201400- 334 PM AKST Sun Nov 19 2017 .SYNOPSIS FOR THE WESTERN GULF OF ALASKA... A 975 mb low near 57N 148W will track to 52N 150W Mon afternoon then continue to move south and out of the area. $$ PKZ351-201400- Gulf of Alaska Offshore North of 57N and West of 144W- 334 PM AKST Sun Nov 19 2017 ...GALE WARNING THROUGH MONDAY NIGHT... .TONIGHT...E wind 30 to 45 kt. Seas 9 to 17 ft. Rain and snow. .MON...E wind 30 to 45 kt. Seas 15 to 21 ft. Rain and snow. .MON NIGHT...NE wind 20 to 35 kt diminishing to 10 to 25 kt after midnight. Seas 10 to 16 ft. .TUE...NE wind up to 20 kt. Seas 6 to 11 ft. .TUE NIGHT...N wind 10 to 25 kt. Seas 5 to 9 ft. .WED THROUGH FRI...NE wind 10 to 25 kt. Seas 5 to 10 ft. $$ PKZ352-201400- Gulf of Alaska Offshore South of 57N North of 55N and West of 144W- 334 PM AKST Sun Nov 19 2017 ...STORM WARNING TONIGHT... .TONIGHT...W wind 35 to 50 kt becoming S 20 kt after midnight. West of 150W...W wind 35 to 50 kt becoming N after midnight. Seas 15 to 24 ft. Rain and snow. .MON...N to E wind 25 to 40 kt. Seas 12 to 20 ft. Rain and snow. .MON NIGHT...NE wind 25 to 40 kt diminishing to 15 to 30 kt after midnight. Seas 9 to 17 ft. .TUE...N wind 10 to 25 kt. Seas 7 to 12 ft. .TUE NIGHT...N wind 15 to 30 kt. Seas 6 to 10 ft. .WED THROUGH FRI...N wind 15 to 30 kt. Seas 9 to 14 ft. $$
573 FZAK61 PAFC 201251 OFFAER Offshore Waters Forecast National Weather Service Anchorage AK 351 AM AKST Mon Nov 20 2017 Offshore waters forecast for the Gulf of Alaska West of 144W 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. PKZ399-210300- 351 AM AKST Mon Nov 20 2017 .SYNOPSIS FOR THE WESTERN GULF OF ALASKA... A 967 mb low near 55N 148W will exit into the North Pacific by Tue morning. $$ PKZ351-210300- Gulf of Alaska Offshore North of 57N and West of 144W- 351 AM AKST Mon Nov 20 2017 ...GALE WARNING THROUGH TONIGHT... .TODAY...NE wind 30 to 45 kt. Seas 12 to 20 ft. Rain. .TONIGHT...NE wind 20 to 35 kt. Seas 11 to 17 ft. .TUE...NE wind up to 20 kt becoming 10 kt in the afternoon. Seas 8 to 11 ft. .TUE NIGHT...N wind 10 to 25 kt. Seas 5 to 8 ft. .WED...NW wind 15 to 30 kt. Seas 5 to 10 ft. .THU...SW wind up to 15 kt. Seas 4 to 9 ft. .FRI...NE wind 15 to 30 kt. Seas 8 to 13 ft. $$ PKZ352-210300- Gulf of Alaska Offshore South of 57N North of 55N and West of 144W- 351 AM AKST Mon Nov 20 2017 ...GALE WARNING THROUGH TONIGHT... .TODAY...E wind 30 to 45 kt. Seas 12 to 20 ft. .TONIGHT...NE wind 20 to 35 kt diminishing to 10 to 25 kt after midnight. Seas 10 to 18 ft. .TUE...N wind 10 to 20 kt. Seas 7 to 10 ft. .TUE NIGHT...N wind 15 to 30 kt. Seas 5 to 10 ft. .WED...NW wind 15 to 30 kt. Seas 7 to 12 ft. .THU...W wind 15 to 30 kt. Seas 9 to 17 ft. .FRI...N wind 25 to 40 kt. Seas 14 to 22 ft. $$
700 FZAK61 PAFC 210036 OFFAER Offshore Waters Forecast National Weather Service Anchorage AK 336 PM AKST Mon Nov 20 2017 Offshore waters forecast for the Gulf of Alaska West of 144W Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ399-211415- 336 PM AKST Mon Nov 20 2017 .SYNOPSIS FOR THE WESTERN GULF OF ALASKA... A 977 mb low at 53N 150W will move to 48N 151W at 990 mb Mon night. A 1002 mb low will develop near 59N 142W Tue night and then remain nearly stationary and strengthen to 995 mb Wed afternoon. $$ PKZ351-211415- Gulf of Alaska Offshore North of 57N and West of 144W- 336 PM AKST Mon Nov 20 2017 ...GALE WARNING TONIGHT... .TONIGHT...NE wind 25 to 35 kt diminishing to 15 to 30 kt after midnight. Seas 12 to 20 ft. .TUE...NE wind 10 to 20 kt. Seas 8 to 11 ft. .TUE NIGHT...N wind 10 to 25 kt. Seas 5 to 9 ft. .WED...NW wind 15 to 30 kt. Seas 7 to 11 ft. .WED NIGHT...W wind 10 to 25 kt. Seas 5 to 10 ft. .THU...S wind 10 to 25 kt. Seas 4 to 9 ft. .FRI THROUGH SAT...NE wind 15 to 30 kt. Seas 7 to 12 ft. $$ PKZ352-211415- Gulf of Alaska Offshore South of 57N North of 55N and West of 144W- 336 PM AKST Mon Nov 20 2017 ...GALE WARNING TONIGHT AND TUESDAY NIGHT... .TONIGHT...NE wind 20 to 35 kt. Seas 14 to 20 ft. .TUE...N wind 10 to 20 kt. Seas 7 to 11 ft. .TUE NIGHT...N wind 10 to 25 kt increasing to 20 to 35 kt after midnight. Seas 6 to 12 ft. .WED...N wind 20 to 35 kt. Seas 8 to 13 ft. .WED NIGHT...W wind 15 to 25 kt. Seas 7 to 11 ft. .THU...W wind 15 to 30 kt. Seas 9 to 17 ft. .FRI...N wind 25 to 40 kt. Seas 14 to 22 ft. .SAT...N wind 20 to 35 kt. Seas 9 to 17 ft. $$
508 FZAK61 PAFC 211253 OFFAER Offshore Waters Forecast National Weather Service Anchorage AK 353 AM AKST Tue Nov 21 2017 Offshore waters forecast for the Gulf of Alaska West of 144W 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. PKZ399-220200- 353 AM AKST Tue Nov 21 2017 .SYNOPSIS FOR THE WESTERN GULF OF ALASKA... A trough of low pressure over the central Gulf of Alaska will weaken through late this morning before a front moves into the western Gulf of Alaska this evening through Wed morning. A front over the Alaska Peninsula Wed night will move into the Gulf Thu morning. $$ PKZ351-220200- Gulf of Alaska Offshore North of 57N and West of 144W- 353 AM AKST Tue Nov 21 2017 ...GALE WARNING WEDNESDAY... .TODAY...NE wind 10 to 20 kt. Seas 6 to 11 ft. .TONIGHT...N wind 15 to 30 kt. Seas 5 to 9 ft. .WED...NW wind 20 to 35 kt. Seas 6 to 11 ft. .WED NIGHT...W wind 10 to 20 kt. Seas 5 to 8 ft. .THU...SW wind 20 to 35 kt. Seas 7 to 12 ft. .FRI...N wind 20 to 35 kt. Seas 9 to 16 ft. .SAT...NE wind 10 to 25 kt. Seas 5 to 9 ft. $$ PKZ352-220200- Gulf of Alaska Offshore South of 57N North of 55N and West of 144W- 353 AM AKST Tue Nov 21 2017 ...GALE WARNING TONIGHT AND WEDNESDAY... .TODAY...N wind 10 to 20 kt. Seas 6 to 10 ft. .TONIGHT...NW wind 20 to 35 kt. Seas 6 to 11 ft. .WED...NW wind 20 to 35 kt. Seas 8 to 13 ft. .WED NIGHT...W wind 15 to 30 kt. Seas 6 to 10 ft. .THU...W wind 25 to 40 kt. Seas 10 to 18 ft. .FRI...N wind 25 to 40 kt. Seas 13 to 21 ft. .SAT...N wind 15 to 30 kt. Seas 9 to 14 ft. $$
465 FZAK61 PAFC 220025 OFFAER Offshore Waters Forecast National Weather Service Anchorage AK 325 PM AKST Tue Nov 21 2017 Offshore waters forecast for the Gulf of Alaska West of 144W Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ399-221445- 325 PM AKST Tue Nov 21 2017 .SYNOPSIS FOR THE WESTERN GULF OF ALASKA... A front moves over the North Gulf Coast and Eastern Gulf through Wed afternoon. A 996 mb low forms at 60N 142W Wed afternoon and merges with a 979 mb low near 58N 145W Thu afternoon. The associated front trails across the Eastern Gulf and south of Kodiak Island through Thu afternoon. $$ PKZ351-221445- Gulf of Alaska Offshore North of 57N and West of 144W- 325 PM AKST Tue Nov 21 2017 ...GALE WARNING WEDNESDAY... .TONIGHT...N wind 15 to 30 kt. Seas 4 to 9 ft. .WED...NW wind 20 to 35 kt becoming 25 kt in the afternoon. Seas 5 to 10 ft. .WED NIGHT...W wind 10 to 20 kt. Seas 5 to 8 ft. Rain. .THU...S wind 10 to 25 kt. Seas 5 to 8 ft. .THU NIGHT...N wind 20 to 35 kt. Seas 8 to 13 ft. .FRI...NE wind 15 to 30 kt. Seas 9 to 15 ft. .SAT THROUGH SUN...N wind 10 to 25 kt. Seas 4 to 9 ft. $$ PKZ352-221445- Gulf of Alaska Offshore South of 57N North of 55N and West of 144W- 325 PM AKST Tue Nov 21 2017 ...GALE WARNING THROUGH WEDNESDAY... .TONIGHT...NW wind 20 to 35 kt. Seas 6 to 10 ft. .WED...NW wind 20 to 35 kt. Seas 8 to 13 ft. .WED NIGHT...W wind 20 kt. Seas 6 to 10 ft. Rain. .THU...W wind 15 to 30 kt. Seas 8 to 13 ft. .THU NIGHT...NW wind 25 to 40 kt. Seas 12 to 20 ft. .FRI...N wind 25 to 40 kt. Seas 12 to 20 ft. .SAT...N wind 15 to 30 kt. Seas 9 to 14 ft. .SUN...NW wind up to 15 kt. Seas 3 to 7 ft. $$
188 FZAK61 PAFC 221247 OFFAER Offshore Waters Forecast National Weather Service Anchorage AK 347 AM AKST Wed Nov 22 2017 Offshore waters forecast for the Gulf of Alaska West of 144W 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. PKZ399-230200- 347 AM AKST Wed Nov 22 2017 .SYNOPSIS FOR THE WESTERN GULF OF ALASKA... A front moves over the North Gulf Coast and Eastern Gulf through this afternoon. A 985 mb low at 58N 151W Thu morning moves to 56N 148W at 977 mb Fri morning. The associated front moves across to the Eastern Gulf through Fri morning. $$ PKZ351-230200- Gulf of Alaska Offshore North of 57N and West of 144W- 347 AM AKST Wed Nov 22 2017 ...GALE WARNING TODAY... .TODAY...NW wind 20 to 35 kt becoming 25 kt in the afternoon. Seas 6 to 11 ft. .TONIGHT...W wind 10 to 20 kt. Seas 5 to 8 ft. .THU...S wind 10 to 25 kt becoming NW in the afternoon. Seas 6 to 11 ft. Widespread rain and snow showers. .THU NIGHT...N wind 15 to 30 kt. Seas 9 to 14 ft. .FRI THROUGH SAT...NE wind 15 to 30 kt. Seas 8 to 13 ft. .SUN...SE wind 10 kt. Seas 3 to 5 ft. $$ PKZ352-230200- Gulf of Alaska Offshore South of 57N North of 55N and West of 144W- 347 AM AKST Wed Nov 22 2017 ...GALE WARNING TODAY... .TODAY...NW wind 20 to 35 kt. Seas 7 to 12 ft. .TONIGHT...SW wind 20 to 30 kt. Seas 6 to 10 ft. Rain with snow. .THU...W wind 20 to 30 kt diminishing to 10 to 25 kt in the afternoon. Seas 8 to 13 ft. Rain showers. .THU NIGHT...NW wind 30 to 45 kt. Seas 13 to 21 ft. .FRI...N wind 25 to 40 kt. Seas 13 to 21 ft. .SAT...N wind 15 to 30 kt. Seas 8 to 16 ft. .SUN...S wind up to 15 kt. Seas 3 to 7 ft. $$
098 FZAK61 PAFC 230022 OFFAER Offshore Waters Forecast National Weather Service Anchorage AK 322 PM AKST Wed Nov 22 2017 Offshore waters forecast for the Gulf of Alaska West of 144W Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ399-231415- 322 PM AKST Wed Nov 22 2017 .SYNOPSIS FOR THE WESTERN GULF OF ALASKA... Broad low pressure exits the Southeastern Gulf by Thu morning. A front extends across the Northern Gulf through Fri afternoon. A 985 mb low forms at 58N 150W Thu morning and moves to 54N 140W at 978 mb for Fri afternoon. $$ PKZ351-231415- Gulf of Alaska Offshore North of 57N and West of 144W- 322 PM AKST Wed Nov 22 2017 .TONIGHT...SW wind 10 to 20 kt. Seas 5 to 8 ft. Rain showers. .THU...S wind 10 to 25 kt becoming NE in the afternoon. Seas 6 to 11 ft. Rain showers. .THU NIGHT...N wind 15 to 30 kt. Seas 8 to 16 ft. Rain showers. .FRI...N wind 15 to 30 kt. Seas 10 to 16 ft. .FRI NIGHT...N wind 15 to 30 kt. Seas 8 to 12 ft. .SAT THROUGH MON...SE wind 10 to 25 kt. Seas 5 to 10 ft. $$ PKZ352-231415- Gulf of Alaska Offshore South of 57N North of 55N and West of 144W- 322 PM AKST Wed Nov 22 2017 ...GALE WARNING THURSDAY AND THURSDAY NIGHT... .TONIGHT...NW wind 20 kt becoming SW after midnight. Seas 8 to 13 ft. Rain and snow. .THU...W wind 20 to 35 kt. Seas 9 to 14 ft. Rain showers. .THU NIGHT...NW wind 25 to 40 kt. Seas 13 to 21 ft. Rain showers. .FRI...NW wind 25 to 40 kt. Seas 16 to 22 ft. .FRI NIGHT...N wind 25 to 40 kt. Seas 11 to 19 ft. .SAT...N wind 15 to 30 kt. Seas 9 to 14 ft. .SUN...S wind up to 15 kt. Seas 3 to 7 ft. .MON...SE wind 10 to 20 kt. Seas 8 to 13 ft. $$
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 17, 4:48 PM AKST, 10 hours 56 minutes earlier.
Area forecast discussion, Nov 17, 4:48 PM AKST, 10 hours 56 minutes before
Southcentral and Southwest Alaska Forecast Discussion National Weather Service Anchorage AK 448 PM AKST Fri Nov 17 2017 .ANALYSIS AND UPPER LEVELS... There is a vertically stacked low over the northeast Gulf, with a trough extending north into the Yukon Territory. There is also an upper level ridge over the central Bering and central Aleutians. There is an upper level low over northeast Russia. An associated weather system is over the Kamchatka peninsula. The warm front with this system is over the north central Bering, and the cold front is over the western Bering and western Aleutians. Northerly flow aloft is over southern Alaska, with a fairly strong offshore gradient at the low levels. Some clouds and precipitation are banked up against the northern and western slopes of the Alaska range, and most of the remainder of southern Alaska is dry. && .MODEL DISCUSSION... The numerical models are in rather good agreement through the short term portion of the forecast (Sunday afternoon). The models seem to finally have a good handle on the developing triple point low in the Gulf on Sunday, and then begin to diverge on Sunday afternoon on the exact location of the surface low. Forecast confidence is thus higher than normal. && .AVIATION... PANC...Overall, VFR conditions should persist through Saturday evening. However, areas of fog are hovering just north of the airport late Fri afternoon and may come in and out of the airport through the evening. Increasing northerly winds are expected to develop Friday evening and then persist into Saturday evening which should clear out the remainder of the stratus as the mix the atmosphere (though at first these winds may just push the stratus into the airport at times this evening.) && .SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 through 3)... Outflow winds along the North Gulf Coast will be the primary concern tonight and Saturday as weak high pressure begins to move into the mainland. This will leave a persistent pressure gradient along the coast. The strongest winds of these should occur near Seward, Whittier, and Valdez/Thompson Pass areas where gusty outflow winds are expected to increase again this evening, then begin to diminish on Saturday. The low stratus and fog that developed in the Cook Inlet region yesterday behind the snow is also beginning to slowly break up, however confidence is low that this clearing will continue through the night. As a result it's possible that this layer may continue in spots into Saturday but confidence in either solution is low. The focus then shifts to the development of the triple point low near Kodiak late Saturday night. The models are beginning to come into better agreement with the track of this low somewhere in the Central Gulf before descending into the North Pacific. The main concern in the exact placement of this low is with Kodiak Island and the potential for blowing snow, as previous runs of the GFS kept the low just offshore, leaving the area under a persistent band of snow with gusty northwesterly winds. Later runs however are trending east with this low, leaving a bulk of the precipitation and winds over the waters of the Gulf. Model trends will need to be closely monitored, as trends back to the west will result in significantly more snow/wind for Kodiak Island on Sunday. This triple point low and its associated upper level trough will also bring the next round of snowfall into Southcentral for the day on Sunday, with widespread accumulations expected with no downsloping present to protect the lee side of the Chugach. This portion of the system bears watching as well as guidance is hinting at the possibility for advisory level snowfall, especially to the Kenai Peninsula along with the gusty northerly winds. && .SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2)... Weak, cold, northerly flow will continue over southwest Alaska until a warm front moves in over the area Saturday. The parent low for this system will move over the Bering Strait Saturday afternoon then rapidly intensify as it moves towards the Norton Sound area. During this time its front will push across southwest Alaska. The front will be warm enough to change over some of the precip along the southwest coast to rain, but the majority of southwest Alaska will stay snow. This front will move slowly over interior portions of southwest Alaska allowing enough time for snow totals around 10 inches for areas from King Salmon north through the Lower Kuskokwim Valley. Meanwhile, strong cold air advection and favorable upper level dynamics will allow for strong winds along the Kuskokwim Delta coast early Saturday morning. These winds will last into Sunday afternoon before tapering off as the main low drifts south into the Gulf. && .SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)... High pressure over the southern Bering is retreating into the North Pacific which will make way for a front to push through the eastern Bering and Alaska Peninsula from the low moving towards Norton Sound. A favorable jet position, cold air advection and other upper level dynamics will bring strong winds to areas all around the eastern Bering. The first to see these winds will be the Pribilof Islands which will amp up Saturday night and last into Sunday afternoon. The front will then push south bringing strong winds to the Eastern Aleutians and Alaska Peninsula early Sunday morning. Strong winds for these locations will last into Sunday evening before diminishing. Winds for all three locations have the potential to reach warning level. && .LONG TERM FORECAST (Days 3 through 7)... Expect near to below normal temperatures with periodic snow across the southwest, and periodic cloudiness for Southcentral Alaska. Gap winds will pulse up with every exiting disturbance. Monday evening begins day 3 with a system exiting the Gulf of Alaska. Dry conditions will take hold over much of southern Alaska within an outflow pattern, mainly along the north Gulf coast. Overall, the upper level pattern remains very progressive with strong, discrete disturbances propagating from the northwest Pacific into the Bering Sea. Each of these systems will send a surface low pressure east of Kamchatka while sending a front from west to east across the Bering. However, troughing from northwest Canada southward will turn the storm track from the Bering into the Gulf of Alaska. As far as sensible weather is concerned, the periodic fronts will push snow onto the mainland while the front falls apart as it moves west to east. && .AFC WATCHES/WARNINGS/ADVISORIES... PUBLIC...High Wind Warning 195. High Wind Watch 155 181 185. Winter Weather Advisory 152 161. MARINE...Gale 127 128 130-132 138 150-175 180. Storm 179 181 185. && SYNOPSIS AND MODEL DISCUSSION...BL SOUTHCENTRAL ALASKA...DEK SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...DK LONG TERM...MTL
The office that day
Everything else NWS Anchorage, AK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 17, 3:13 PM AKST | Gale Warning | AFC | 60 hr | |
| Nov 17, 3:13 PM AKST | Storm Warning | AFC | 60 hr | |
| Nov 17, 3:13 PM AKST | Storm Warning | AFC | 48 hr | |
| Nov 17, 3:14 PM AKST | High Wind Watch | AFC | 13 hr | |
| Nov 17, 3:14 PM AKST | High Wind Warning | AFC | 60 hr | |
| Nov 17, 3:14 PM AKST | Winter Weather Advisory | AFC | 42 hr | |
| Nov 17, 3:45 PM AKST | Small Craft Advisory | AFC | 12 hr | |
| Nov 18, 3:44 AM AKST | Gale Warning | AFC | 24 hr | |
| Nov 18, 3:44 AM AKST | Small Craft Advisory | AFC | 5 days | |
| Nov 18, 3:44 AM AKST | Storm Warning | AFC | 60 hr | |
| Nov 18, 3:59 AM AKST | Gale Warning | AFC | 6 days | |
| Nov 18, 3:59 AM AKST | Small Craft Advisory | AFC | 60 hr | |
| Nov 18, 3:59 AM AKST | Storm Warning | AFC | 47 hr | |
| Nov 18, 4:56 AM AKST | Winter Weather Advisory | AFC | 35 hr | |
| Nov 18, 9:47 AM AKST | Winter Weather Advisory | AFC | 5 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.