Alert archive / Alaska / Small Craft Advisories in 2017
Small Craft Advisory 934, NWS Anchorage, AK
NWS Anchorage, AK issued this small craft advisory at Dec 6, 2017, 3:49 PM AKST. It was in force for 36 hr.
The area
The counties it named.
The facts
- Issued
- Dec 6, 2017, 3:49 PM AKST (00:49 UTC)
- Expired
- Dec 8, 2017, 3:42 AM AKST
- In force
- 36 hr
- Issued by
- NWS Anchorage, AK
The text
As transmitted.
513 FZAK51 PAFC 070049 CWFAER Coastal Waters Forecast National Weather Service Anchorage Alaska 349 PM AKST Wed Dec 6 2017 Coastal Waters Forecast for the Northern Gulf of Alaska Coast up to 100 nm out including Kodiak Island and Cook Inlet. 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. PKZ197-071330- 349 PM AKST Wed Dec 6 2017 .SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+ COOK INLET... A 988 mb North Pacific low moves to 95 nm south of Chignik Thu afternoon and moves inland and dissipates Thu night. A strong front remains nearly stationary in the eastern Gulf through Fri afternoon. $$ PKZ119-071330- Cape Suckling to Cape Cleare- 349 PM AKST Wed Dec 6 2017 ...GALE WARNING THURSDAY AND THURSDAY NIGHT... .TONIGHT...NE wind 20 kt becoming E 30 kt after midnight. Seas 17 ft. Rain. .THU...SE wind 35 kt increasing to 45 kt in the afternoon. Seas 18 ft. Rain. .THU NIGHT...SE wind 30 kt except SE 45 kt near the coast. Seas 19 ft. Rain. .FRI...SE wind 40 kt. Seas 18 ft. .FRI NIGHT...SE wind 20 kt. Seas 13 ft. .SAT...SE wind 30 kt. Seas 11 ft. .SUN...SE wind 40 kt. Seas 20 ft. .MON...SE wind 25 kt. Seas 21 ft. $$ PKZ120-071330- Cape Cleare to Gore Point- 349 PM AKST Wed Dec 6 2017 ...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT... .TONIGHT...NE wind 20 kt becoming E 30 kt after midnight. Seas 14 ft. Rain. .THU...E wind 30 kt. Seas 14 ft. Rain. .THU NIGHT...S wind 25 kt becoming SE 15 kt after midnight. Seas 14 ft. .FRI...E wind 15 kt. Seas 13 ft. .FRI NIGHT...E wind 20 kt. Seas 12 ft. .SAT...E wind 25 kt. Seas 12 ft. .SUN...E wind 35 kt. Seas 22 ft. .MON...SE wind 25 kt. Seas 22 ft. $$ PKZ121-071330- Resurrection Bay- 349 PM AKST Wed Dec 6 2017 .TONIGHT...N wind 15 kt. Seas 3 ft. Rain. .THU...N wind 15 kt becoming S in the afternoon. Seas 3 ft. Rain. .THU NIGHT...S wind 15 kt becoming N 10 kt after midnight. Seas 3 ft. Rain. .FRI AND FRI NIGHT...N wind 10 kt. Seas 2 ft. .SAT THROUGH SUN...N wind 10 kt. Seas 2 ft. .MON...S wind 10 kt. Seas 2 ft. $$ PKZ125-071330- Prince William Sound- 349 PM AKST Wed Dec 6 2017 ...GALE WARNING THURSDAY AND THURSDAY NIGHT... .TONIGHT...NE wind 20 kt. Seas 2 ft building to 4 ft after midnight. Rain. .THU...E wind 25 kt increasing to 35 kt in the afternoon. Seas 4 ft building to 7 ft in the afternoon. Rain. .THU NIGHT...SE wind 35 kt. Seas 7 ft. Rain. .FRI...E wind 30 kt. Seas 6 ft. .FRI NIGHT...E wind 15 kt. Seas 3 ft. .SAT...E wind 15 kt. Seas 3 ft. .SUN...E wind 30 kt. Seas 6 ft. .MON...SE wind 20 kt. Seas 4 ft. $$ PKZ126-071330- Port Valdez- 349 PM AKST Wed Dec 6 2017 .TONIGHT...E wind 10 kt. Seas 3 ft. Widespread rain showers. .THU...E wind 10 kt. Seas 2 ft. Rain. .THU NIGHT...E wind 15 kt diminishing to 10 kt after midnight. Seas 3 ft. Rain. .FRI...E wind 10 kt. Seas 2 ft. .FRI NIGHT...Variable wind less than 10 kt. Seas 2 ft. .SAT THROUGH MON...E wind 10 kt. Seas 2 ft. $$ PKZ127-071330- Valdez Narrows- 349 PM AKST Wed Dec 6 2017 ...SMALL CRAFT ADVISORY THROUGH THURSDAY... .TONIGHT...NE wind 15 kt increasing to 25 kt. Seas 3 ft. Widespread rain showers. .THU...NE wind 25 kt. Seas 3 ft. Rain. .THU NIGHT...NE wind 20 kt. Seas 3 ft. Rain. .FRI AND FRI NIGHT...NE wind 15 kt. Seas 3 ft. .SAT THROUGH MON...NE wind 15 kt. Seas 3 ft. $$ PKZ128-071330- Valdez Arm- 349 PM AKST Wed Dec 6 2017 ...SMALL CRAFT ADVISORY THURSDAY AND THURSDAY NIGHT... .TONIGHT...NE wind 15 kt. Seas 4 ft. Widespread rain showers. .THU...NE wind 20 kt becoming SE 25 kt in the afternoon. Seas 5 ft. Rain. .THU NIGHT...SE wind 25 kt diminishing to 15 kt after midnight. Seas 5 ft subsiding to 3 ft after midnight. Rain. .FRI...NE wind 20 kt. Seas 3 ft. .FRI NIGHT...NE wind 10 kt. Seas 2 ft. .SAT THROUGH SUN...NE wind 15 kt. Seas 3 ft. .MON...NE wind 15 kt. Seas 3 ft. $$ PKZ129-071330- Passage Canal- 349 PM AKST Wed Dec 6 2017 ...SMALL CRAFT ADVISORY THURSDAY NIGHT... .TONIGHT...W wind 15 kt becoming E after midnight. Seas 2 ft. Widespread rain showers. .THU...E wind 20 kt. Seas 3 ft. Rain. .THU NIGHT...E wind 25 kt diminishing to 15 kt after midnight. Seas 4 ft subsiding to 2 ft after midnight. Rain. .FRI...E wind 15 kt. Seas 2 ft. .FRI NIGHT...E wind 10 kt. Seas 2 ft. .SAT...E wind 10 kt. Seas 2 ft. .SUN THROUGH MON...E wind 15 kt. Seas 2 ft. $$ PKZ130-071330- West of Barren Islands including Kamishak Bay- 349 PM AKST Wed Dec 6 2017 ...GALE WARNING THROUGH THURSDAY... .TONIGHT...NE wind 20 kt becoming NE 45 kt after midnight. Seas 8 ft building to 17 ft after midnight. Rain showers and snow showers. .THU...NE wind 40 kt diminishing to 30 kt in the afternoon. Seas 14 ft. Rain with snow. .THU NIGHT...E wind 20 kt. Seas 6 ft. Rain. .FRI...E wind 20 kt. Seas 6 ft. .FRI NIGHT...E wind 25 kt. Seas 5 ft. .SAT THROUGH SUN...E wind 30 kt. Seas 7 ft. .MON...SE wind 20 kt. Seas 5 ft. $$ PKZ131-071330- Barren Islands East- 349 PM AKST Wed Dec 6 2017 ...GALE WARNING TONIGHT... .TONIGHT...NE wind 20 kt becoming E 35 kt after midnight. Seas 13 ft. Rain showers. .THU...SE wind 30 kt becoming E 20 kt in the afternoon. Seas 14 ft. Rain. .THU NIGHT...S wind 20 kt. Seas 11 ft. .FRI...E wind 20 kt. Seas 12 ft. .FRI NIGHT...E wind 25 kt. Seas 11 ft. .SAT...E wind 30 kt. Seas 13 ft. .SUN...E wind 30 kt. Seas 22 ft. .MON...SE wind 25 kt. Seas 22 ft. $$ PKZ132-071330- Marmot Island to Sitkinak- 349 PM AKST Wed Dec 6 2017 ...SMALL CRAFT ADVISORY THROUGH THURSDAY NIGHT... .TONIGHT...NE wind 30 kt. Seas 14 ft. Rain showers. .THU...SE wind 30 kt diminishing to 20 kt in the afternoon. Seas 13 ft. .THU NIGHT...S wind 20 kt. Seas 12 ft. .FRI...SE wind 20 kt. Seas 11 ft. .FRI NIGHT...E wind 25 kt. Seas 13 ft. .SAT...SE wind 25 kt. Seas 14 ft. .SUN...SE wind 25 kt. Seas 19 ft. .MON...SE wind 20 kt. Seas 19 ft. $$ PKZ136-071330- Chiniak Bay- 349 PM AKST Wed Dec 6 2017 ...SMALL CRAFT ADVISORY THURSDAY... .TONIGHT...N wind 20 kt. Seas 4 ft building to 7 ft after midnight. Widespread rain showers. .THU...SE wind 25 kt diminishing to 15 kt in the afternoon. Seas 7 ft subsiding to 4 ft in the afternoon. Rain. .THU NIGHT...S wind 20 kt becoming SE 10 kt after midnight. Seas 3 ft. Rain. .FRI...SE wind 15 kt. Seas 4 ft. .FRI NIGHT...E wind 20 kt. Seas 6 ft. .SAT THROUGH SUN...E wind 20 kt. Seas 7 ft. .MON...S wind 15 kt. Seas 4 ft. $$ PKZ137-071330- Marmot Bay- 349 PM AKST Wed Dec 6 2017 ...SMALL CRAFT ADVISORY THURSDAY... .TONIGHT...NE wind 20 kt. Seas 4 ft building to 7 ft after midnight. Rain showers and snow showers. .THU...SE wind 25 kt diminishing to 15 kt in the afternoon. Seas 9 ft subsiding to 4 ft in the afternoon. Rain and snow. .THU NIGHT...SE wind 15 kt diminishing to 10 kt after midnight. Seas 3 ft. .FRI...E wind 15 kt. Seas 4 ft. .FRI NIGHT...E wind 20 kt. Seas 7 ft. .SAT THROUGH SUN...E wind 20 kt. Seas 7 ft. .MON...SE wind 15 kt. Seas 4 ft. $$ PKZ138-071330- Shelikof Strait- 349 PM AKST Wed Dec 6 2017 ...GALE WARNING THROUGH THURSDAY... .TONIGHT...NE wind 20 kt increasing to 40 kt after midnight. Seas 7 ft building to 15 ft after midnight. .THU...NE wind 40 kt diminishing to 30 kt in the afternoon. Seas 15 ft subsiding to 9 ft in the afternoon. Rain. .THU NIGHT...SE wind 20 kt. Seas 5 ft. .FRI...NE wind 20 kt. Seas 6 ft. .FRI NIGHT...E wind 25 kt. Seas 7 ft. .SAT...E wind 30 kt. Seas 7 ft. .SUN...E wind 25 kt. Seas 5 ft. .MON...SE wind 20 kt. Seas 5 ft. $$ PKZ139-071330- Cook Inlet Kalgin Island to Point Bede- 349 PM AKST Wed Dec 6 2017 ...GALE WARNING THROUGH THURSDAY... .TONIGHT...N wind 20 kt increasing to 35 kt after midnight. Seas 7 ft building to 11 ft after midnight. Freezing spray. Snow showers. .THU...NE wind 35 kt becoming N 25 kt in the afternoon. Seas 10 ft. Freezing spray. Rain and snow. .THU NIGHT...NE wind 20 kt. Seas 5 ft. .FRI AND FRI NIGHT...NE wind 20 kt. Seas 5 ft. .SAT...NE wind 25 kt. Seas 6 ft. .SUN...NE wind 30 kt. Seas 7 ft. .MON...SE wind 15 kt. Seas 3 ft. $$ PKZ140-071330- Cook Inlet North of Kalgin Island- 349 PM AKST Wed Dec 6 2017 ...SMALL CRAFT ADVISORY THROUGH TONIGHT... .TONIGHT...N wind 15 kt increasing to 25 kt after midnight. Seas 3 ft building to 7 ft after midnight. Freezing spray. .THU...N wind 20 kt. Seas 6 ft. Rain and snow. .THU NIGHT...N wind 15 kt. Seas 4 ft. .FRI AND FRI NIGHT...NE wind 15 kt. Seas 3 ft. .SAT...NE wind 20 kt. Seas 5 ft. .SUN...NE wind 25 kt. Seas 5 ft. .MON...SE wind 15 kt. Seas 3 ft. $$ PKZ141-071330- Kachemak Bay- 349 PM AKST Wed Dec 6 2017 .TONIGHT...NE wind 20 kt. Seas 3 ft. Rain showers and snow showers. .THU...E wind 15 kt becoming NE 10 kt in the afternoon. Seas 3 ft. Rain and snow. .THU NIGHT...SE wind 10 kt. Seas 2 ft. Rain. .FRI...NE wind 10 kt. Seas 2 ft. .FRI NIGHT...NE wind 15 kt. Seas 3 ft. .SAT...E wind 20 kt. Seas 3 ft. .SUN...E wind 25 kt. Seas 5 ft. .MON...SE wind 15 kt. Seas 2 ft. $$
3 follow-up statements
405 FZAK51 PAFC 071240 CWFAER Coastal Waters Forecast National Weather Service Anchorage Alaska 340 AM AKST Thu Dec 7 2017 Coastal Waters Forecast for the Northern Gulf of Alaska Coast up to 100 nm out including Kodiak Island and Cook Inlet. 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. PKZ197-080200- 340 AM AKST Thu Dec 7 2017 .SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+ COOK INLET... A 983 mb low 240 nm south of Chignik will move to 170 nm north of Cold Bay as it weakens to 988 mb Thu night, then become absorbed by a 980 mb North Pacific low Fri night. A 998 mb low will then move to 70 nm southeast of Cordova at 997 mb Fri afternoon, then dissipate in Prince William Sound Fri night. $$ PKZ119-080200- Cape Suckling to Cape Cleare- 340 AM AKST Thu Dec 7 2017 ...STORM WARNING TODAY... .TODAY...SE wind 25 kt increasing to 35 kt in the afternoon. Near the coast, E wind 35 kt becoming SE 50 kt in the afternoon. Seas building to 20 ft ft. Rain. .TONIGHT...SE wind 40 kt. Seas 19 ft. Rain. .FRI...SE wind 20 kt except E 35 kt near the coast. Seas 18 ft. .FRI NIGHT...SE wind 20 kt. Seas 13 ft. .SAT...SE wind 30 kt. Seas 12 ft. .SUN...SE wind 40 kt. Seas 20 ft. .MON...SE wind 25 kt. Seas 21 ft. $$ PKZ120-080200- Cape Cleare to Gore Point- 340 AM AKST Thu Dec 7 2017 ...SMALL CRAFT ADVISORY THROUGH FRIDAY... .TODAY...SE wind 25 kt. Seas 14 ft. Rain. .TONIGHT...S wind 25 kt becoming SE 15 kt after midnight. Seas 14 ft. .FRI...E wind 15 kt. Seas 13 ft. .FRI NIGHT...E wind 20 kt. Seas 12 ft. .SAT...E wind 25 kt. Seas 12 ft. .SUN...E wind 35 kt. Seas 22 ft. .MON...SE wind 25 kt. Seas 22 ft. $$ PKZ121-080200- Resurrection Bay- 340 AM AKST Thu Dec 7 2017 .TODAY...Variable wind 10 kt becoming S 15 kt by late morning. Seas 3 ft. Rain. .TONIGHT...Variable wind 15 kt becoming S 10 kt after midnight. Seas 3 ft. Rain. .FRI...N wind 10 kt. Seas 2 ft. .FRI NIGHT...N wind 10 kt. Seas 2 ft. .SAT...N wind 15 kt. Seas 3 ft. .SUN...N wind 10 kt. Seas 2 ft. .MON...Variable wind 10 kt. Seas 2 ft. $$ PKZ125-080200- Prince William Sound- 340 AM AKST Thu Dec 7 2017 ...GALE WARNING THROUGH TONIGHT... .TODAY...E wind increasing to 35 kt this morning. Seas building to 7 ft. Rain. .TONIGHT...SE wind 40 kt diminishing to 30 kt after midnight. Seas 7 ft. Rain. .FRI...E wind 25 kt becoming NE 15 kt in the afternoon. Seas 4 ft. .FRI NIGHT...NE wind 15 kt. Seas 2 ft. .SAT...E wind 15 kt. Seas 3 ft. .SUN...E wind 30 kt. Seas 6 ft. .MON...SE wind 20 kt. Seas 4 ft. $$ PKZ126-080200- Port Valdez- 340 AM AKST Thu Dec 7 2017 .TODAY...E wind 10 kt. Seas 2 ft. Rain. .TONIGHT...E wind 15 kt diminishing to 10 kt after midnight. Seas 3 ft. Rain. .FRI...E wind 10 kt in the morning becoming variable less than 10 kt. Seas 2 ft. Rain. .FRI NIGHT...Variable wind less than 10 kt. Seas 2 ft. .SAT THROUGH MON...E wind 10 kt. Seas 2 ft. $$ PKZ127-080200- Valdez Narrows- 340 AM AKST Thu Dec 7 2017 ...SMALL CRAFT ADVISORY TODAY... .TODAY...NE wind 25 kt. Seas 3 ft. Rain. .TONIGHT...NE wind 20 kt. Seas 3 ft. Rain. .FRI...NE wind 15 kt diminishing to 10 kt in the afternoon. Seas 3 ft. Rain. .FRI NIGHT...NE wind 15 kt. Seas 3 ft. .SAT THROUGH SUN...NE wind 20 kt. Seas 3 ft. .MON...NE wind 15 kt. Seas 3 ft. $$ PKZ128-080200- Valdez Arm- 340 AM AKST Thu Dec 7 2017 ...SMALL CRAFT ADVISORY THROUGH TONIGHT... .TODAY...NE wind 25 kt. Seas 5 ft. Rain. .TONIGHT...SE wind 25 kt. Seas 5 ft. Rain. .FRI...NE wind 20 kt. Seas 4 ft. Rain. .FRI NIGHT...NE wind 10 kt. Seas 2 ft. .SAT THROUGH SUN...NE wind 15 kt. Seas 3 ft. .MON...NE wind 15 kt. Seas 3 ft. $$ PKZ129-080200- Passage Canal- 340 AM AKST Thu Dec 7 2017 ...SMALL CRAFT ADVISORY THROUGH TONIGHT... .TODAY...E wind 25 kt. Seas 4 ft. Rain. .TONIGHT...E wind 25 kt diminishing to 15 kt after midnight. Seas 4 ft subsiding to 2 ft after midnight. Rain. .FRI...E wind 15 kt diminishing to 10 kt in the afternoon. Seas 2 ft. Rain. .FRI NIGHT...E wind 10 kt. Seas 2 ft. .SAT THROUGH MON...E wind 15 kt. Seas 2 ft. $$ PKZ130-080200- West of Barren Islands including Kamishak Bay- 340 AM AKST Thu Dec 7 2017 ...GALE WARNING TODAY... .TODAY...NE wind 40 kt becoming NE 30 kt in the afternoon. Seas 14 ft. Rain. .TONIGHT...E wind 20 kt. Seas 6 ft. Rain. .FRI...E wind 20 kt. Seas 6 ft. .FRI NIGHT...E wind 25 kt. Seas 7 ft. .SAT THROUGH SUN...E wind 30 kt. Seas 10 ft. .MON...SE wind 20 kt. Seas 5 ft. $$ PKZ131-080200- Barren Islands East- 340 AM AKST Thu Dec 7 2017 ...SMALL CRAFT ADVISORY THROUGH FRIDAY... .TODAY...SE wind 25 kt. Seas 14 ft. Rain. .TONIGHT...S wind 20 kt. Seas 11 ft. .FRI...E wind 20 kt. Seas 12 ft. .FRI NIGHT...E wind 25 kt. Seas 11 ft. .SAT...E wind 30 kt. Seas 12 ft. .SUN...E wind 30 kt. Seas 22 ft. .MON...SE wind 25 kt. Seas 22 ft. $$ PKZ132-080200- Marmot Island to Sitkinak- 340 AM AKST Thu Dec 7 2017 ...SMALL CRAFT ADVISORY THROUGH FRIDAY... .TODAY...SE wind 25 kt. Seas 13 ft. .TONIGHT...S wind 20 kt. Seas 12 ft. .FRI...E wind 20 kt. Seas 11 ft. .FRI NIGHT...E wind 25 kt. Seas 12 ft. .SAT...SE wind 25 kt. Seas 12 ft. .SUN...SE wind 25 kt. Seas 19 ft. .MON...SE wind 20 kt. Seas 19 ft. $$ PKZ136-080200- Chiniak Bay- 340 AM AKST Thu Dec 7 2017 ...SMALL CRAFT ADVISORY TODAY... .TODAY...SE wind 25 kt diminishing to 15 kt in the afternoon. Seas 7 ft subsiding to 4 ft in the afternoon. Rain. .TONIGHT...S wind 20 kt becoming SE 10 kt after midnight. Seas 4 ft. Rain. .FRI...SE wind 10 kt increasing to 15 kt in the afternoon. Seas 4 ft. .FRI NIGHT...E wind 20 kt. Seas 7 ft. .SAT THROUGH SUN...E wind 20 kt. Seas 7 ft. .MON...SE wind 15 kt. Seas 4 ft. $$ PKZ137-080200- Marmot Bay- 340 AM AKST Thu Dec 7 2017 ...SMALL CRAFT ADVISORY TODAY... .TODAY...SE wind 25 kt diminishing to 15 kt in the afternoon. Seas 8 ft subsiding to 4 ft in the afternoon. Rain. .TONIGHT...SE wind 15 kt diminishing to 10 kt after midnight. Seas 4 ft. Rain. .FRI...E wind 10 kt increasing to 15 kt in the afternoon. Seas 4 ft. .FRI NIGHT...E wind 20 kt. Seas 7 ft. .SAT THROUGH SUN...E wind 20 kt. Seas 7 ft. .MON...SE wind 15 kt. Seas 4 ft. $$ PKZ138-080200- Shelikof Strait- 340 AM AKST Thu Dec 7 2017 ...SMALL CRAFT ADVISORY TODAY... .TODAY...NE wind 40 kt diminishing to 30 kt in the morning. Seas 15 ft subsiding to 11 ft in the afternoon. Rain. .TONIGHT...E wind 20 kt. Seas 6 ft subsiding to 4 ft after midnight. Rain. .FRI...E wind 20 kt. Seas 3 ft building to 6 ft in the afternoon. .FRI NIGHT...E wind 25 kt. Seas 7 ft. .SAT...E wind 30 kt. Seas 9 ft. .SUN...E wind 25 kt. Seas 5 ft. .MON...SE wind 20 kt. Seas 5 ft. $$ PKZ139-080200- Cook Inlet Kalgin Island to Point Bede- 340 AM AKST Thu Dec 7 2017 ...GALE WARNING TODAY... .TODAY...NE wind 35 kt becoming N 25 kt in the afternoon. Seas 10 ft. Rain and snow. .TONIGHT...NE wind 20 kt. Seas 5 ft. .FRI...NE wind 15 kt. Seas 5 ft subsiding to 3 ft in the afternoon. .FRI NIGHT...NE wind 20 kt. Seas 5 ft. .SAT...NE wind 25 kt. Seas 8 ft. .SUN...NE wind 30 kt. Seas 7 ft. .MON...E wind 15 kt. Seas 4 ft. $$ PKZ140-080200- Cook Inlet North of Kalgin Island- 340 AM AKST Thu Dec 7 2017 ...SMALL CRAFT ADVISORY TODAY... .TODAY...N wind 25 kt. Seas 6 ft. Freezing spray. Rain and snow. .TONIGHT...NW wind 15 kt becoming NE after midnight. Seas 4 ft. Rain. .FRI...N wind 10 kt. Seas 3 ft. .FRI NIGHT...N wind 10 kt. Seas 3 ft. .SAT...NE wind 20 kt. Seas 6 ft. .SUN...NE wind 25 kt. Seas 5 ft. .MON...E wind 15 kt. Seas 3 ft. $$ PKZ141-080200- Kachemak Bay- 340 AM AKST Thu Dec 7 2017 .TODAY...NE wind 15 kt diminishing to 10 kt in the afternoon. Seas 2 ft. Rain with snow. .TONIGHT...E wind 10 kt. Seas 2 ft. Rain. .FRI...NE wind 15 kt diminishing to 10 kt in the afternoon. Seas 2 ft. .FRI NIGHT...NE wind 15 kt. Seas 3 ft. .SAT...E wind 20 kt. Seas 3 ft. .SUN...E wind 25 kt. Seas 5 ft. .MON...SE wind 15 kt. Seas 3 ft. $$
306 FZAK51 PAFC 080052 CWFAER Coastal Waters Forecast National Weather Service Anchorage Alaska 352 PM AKST Thu Dec 7 2017 Coastal Waters Forecast for the Northern Gulf of Alaska Coast up to 100 nm out including Kodiak Island and Cook Inlet. 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. PKZ197-081400- 352 PM AKST Thu Dec 7 2017 .SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+ COOK INLET... A front along the Gulf coast will move inland tonight. A 999 mb low will develop 200 nm south of Cape Suckling Fri morning, move to Middleton Island Fri evening and dissipate Fri night. A 982 mb low 200 nm south of Chignik late Fri morning will move to 100 nm south of Sand Point Fri evening then to 250 nm south of Sand Point Sat afternoon. A 984 mb low 250 nm southeast of Sitkinak Sat morning will move to 100 nm southwest of Sitkinak Sat afternoon at 981 mb. $$ PKZ119-081400- Cape Suckling to Cape Cleare- 352 PM AKST Thu Dec 7 2017 ...GALE WARNING TONIGHT... .TONIGHT...SE wind 30 kt diminishing to 15 kt after midnight. Near the coast, E wind 40 kt diminishing to 30 kt after midnight. Seas 17 ft. Rain. .FRI...Variable wind 10 kt. Near the coast, E wind 30 kt diminishing to 15 kt in the afternoon. Seas 13 ft. .FRI NIGHT...Variable wind 10 kt. Seas 11 ft. .SAT...E wind 30 kt. Seas 13 ft. .SAT NIGHT...SE wind 25 kt. Seas 14 ft. .SUN...SE wind 40 kt. Seas 20 ft. .MON THROUGH TUE...SE wind 25 kt. Seas 20 ft. $$ PKZ120-081400- Cape Cleare to Gore Point- 352 PM AKST Thu Dec 7 2017 ...SMALL CRAFT ADVISORY THROUGH FRIDAY NIGHT... .TONIGHT...SE wind 25 kt in the evening becoming variable 15 kt. Seas 13 ft. Rain. .FRI...E wind 10 kt. Seas 12 ft. .FRI NIGHT...E wind 15 kt. Seas 10 ft. .SAT...NE wind 30 kt. Seas 11 ft. .SAT NIGHT...SE wind 25 kt. Seas 13 ft. .SUN...E wind 35 kt. Seas 22 ft. .MON...SE wind 25 kt. Seas 22 ft. .TUE...E wind 25 kt. Seas 18 ft. $$ PKZ121-081400- Resurrection Bay- 352 PM AKST Thu Dec 7 2017 .TONIGHT...Variable wind less than 10 kt. Seas 2 ft. Rain. .FRI...Variable wind less than 10 kt becoming N 10 kt in the afternoon. Seas 2 ft. .FRI NIGHT...N wind 10 kt. Seas 2 ft. .SAT...N wind 15 kt. Seas 3 ft. .SAT NIGHT...S wind 15 kt. Seas 3 ft. .SUN...N wind 10 kt. Seas 2 ft. .MON...Variable wind 10 kt. Seas 2 ft. .TUE...N wind 10 kt. Seas 2 ft. $$ PKZ125-081400- Prince William Sound- 352 PM AKST Thu Dec 7 2017 ...GALE WARNING TONIGHT... .TONIGHT...SE wind 35 kt diminishing to 20 kt after midnight. Gusts to 45 kt in the evening near Hinchinbrook Entrance. Seas 7 ft subsiding to 3 ft. Rain. .FRI...E wind 15 kt diminishing to 10 kt in the afternoon. Seas 3 ft. .FRI NIGHT...N wind 10 kt in the evening becoming variable less than 10 kt. Seas 2 ft. .SAT...NE wind 20 kt. Seas 3 ft. .SAT NIGHT...SE wind 20 kt. Seas 3 ft. .SUN...E wind 30 kt. Seas 6 ft. .MON...SE wind 20 kt. Seas 4 ft. .TUE...E wind 15 kt. Seas 3 ft. $$ PKZ126-081400- Port Valdez- 352 PM AKST Thu Dec 7 2017 .TONIGHT...E wind 10 kt. Seas 2 ft. Rain. .FRI...Variable wind less than 10 kt. Seas 2 ft. Rain and snow. .FRI NIGHT...Variable wind less than 10 kt. Seas 2 ft. Snow. .SAT AND SAT NIGHT...NE wind 10 kt. Seas 2 ft. .SUN THROUGH TUE...NE wind 10 kt. Seas 2 ft. $$ PKZ127-081400- Valdez Narrows- 352 PM AKST Thu Dec 7 2017 .TONIGHT...NE wind 20 kt diminishing to 10 kt after midnight. Seas 3 ft. Rain. .FRI...NE wind 15 kt diminishing to 10 kt in the afternoon. Seas 3 ft. Rain. .FRI NIGHT...NE wind 10 kt. Seas 2 ft. Snow. .SAT...NE wind 20 kt. Seas 3 ft. .SAT NIGHT...N wind 25 kt. Seas 3 ft. .SUN...NE wind 20 kt. Seas 3 ft. .MON...NE wind 15 kt. Seas 3 ft. .TUE...NE wind 10 kt. Seas 2 ft. $$ PKZ128-081400- Valdez Arm- 352 PM AKST Thu Dec 7 2017 .TONIGHT...NE wind 15 kt. Seas 4 ft. Rain. .FRI...NE wind 10 kt. Seas 2 ft. Rain. .FRI NIGHT...NE wind 10 kt in the evening becoming variable less than 10 kt. Seas 2 ft. .SAT...NE wind 15 kt. Seas 3 ft. .SAT NIGHT...NE wind 20 kt. Seas 4 ft. .SUN...NE wind 15 kt. Seas 3 ft. .MON...NE wind 15 kt. Seas 3 ft. .TUE...NE wind 10 kt. Seas 2 ft. $$ PKZ129-081400- Passage Canal- 352 PM AKST Thu Dec 7 2017 ...SMALL CRAFT ADVISORY TONIGHT... .TONIGHT...E wind 25 kt in the evening diminishing to 15 kt. Seas 4 ft subsiding to 2 ft after midnight. Rain. .FRI...E wind 15 kt in the morning becoming variable less than 10 kt. Seas 2 ft. Rain. .FRI NIGHT...Variable wind less than 10 kt. Seas 2 ft. .SAT...E wind 10 kt. Seas 2 ft. .SAT NIGHT...E wind 15 kt. Seas 2 ft. .SUN...E wind 20 kt. Seas 3 ft. .MON THROUGH TUE...E wind 15 kt. Seas 2 ft. $$ PKZ130-081400- West of Barren Islands including Kamishak Bay- 352 PM AKST Thu Dec 7 2017 ...SMALL CRAFT ADVISORY TONIGHT... .TONIGHT...NE wind 25 kt in the evening becoming SE 20 kt. Seas 5 ft. .FRI AND FRI NIGHT...E wind 20 kt. Seas 5 ft. .SAT...NE wind 30 kt. Seas 8 ft. .SAT NIGHT...E wind 30 kt. Seas 8 ft. .SUN...E wind 30 kt. Seas 7 ft. .MON...SE wind 20 kt. Seas 5 ft. .TUE...E wind 20 kt. Seas 5 ft. $$ PKZ131-081400- Barren Islands East- 352 PM AKST Thu Dec 7 2017 ...SMALL CRAFT ADVISORY THROUGH FRIDAY NIGHT... .TONIGHT...SE wind 20 kt. Seas 12 ft. Rain. .FRI...SE wind 20 kt. Seas 12 ft. .FRI NIGHT...E wind 20 kt. Seas 10 ft. .SAT...E wind 30 kt. Seas 12 ft. .SAT NIGHT...SE wind 30 kt. Seas 13 ft. .SUN...E wind 35 kt. Seas 22 ft. .MON...SE wind 25 kt. Seas 22 ft. .TUE...E wind 25 kt. Seas 18 ft. $$ PKZ132-081400- Marmot Island to Sitkinak- 352 PM AKST Thu Dec 7 2017 ...SMALL CRAFT ADVISORY THROUGH FRIDAY NIGHT... .TONIGHT...S wind 20 kt. Seas 12 ft. .FRI...SE wind 15 kt becoming E 25 kt in the afternoon. Seas 11 ft. .FRI NIGHT...E wind 25 kt. Seas 13 ft. Rain. .SAT...E wind 25 kt. Seas 12 ft. .SAT NIGHT...SE wind 25 kt. Seas 12 ft. .SUN...SE wind 30 kt. Seas 19 ft. .MON THROUGH TUE...E wind 20 kt. Seas 18 ft. $$ PKZ136-081400- Chiniak Bay- 352 PM AKST Thu Dec 7 2017 .TONIGHT...SE wind 15 kt. Seas 4 ft. Rain showers. .FRI...SE wind 10 kt becoming E 15 kt in the afternoon. Seas 4 ft. .FRI NIGHT...E wind 15 kt. Seas 4 ft. .SAT...NE wind 25 kt. Seas 9 ft. .SAT NIGHT...SE wind 20 kt. Seas 6 ft. .SUN...E wind 25 kt. Seas 9 ft. .MON...SE wind 15 kt. Seas 4 ft. .TUE...E wind 20 kt. Seas 4 ft. $$ PKZ137-081400- Marmot Bay- 352 PM AKST Thu Dec 7 2017 .TONIGHT...SE wind 15 kt. Seas 4 ft. Rain showers. .FRI...SE wind 10 kt becoming E 15 kt in the afternoon. Seas 4 ft. .FRI NIGHT...E wind 15 kt. Seas 4 ft. .SAT...NE wind 25 kt. Seas 9 ft. .SAT NIGHT...SE wind 20 kt. Seas 7 ft. .SUN...E wind 25 kt. Seas 10 ft. .MON...SE wind 15 kt. Seas 4 ft. .TUE...E wind 20 kt. Seas 5 ft. $$ PKZ138-081400- Shelikof Strait- 352 PM AKST Thu Dec 7 2017 ...SMALL CRAFT ADVISORY FRIDAY NIGHT... .TONIGHT...E wind 15 kt. Seas 3 ft. Rain showers. .FRI...E wind 20 kt. Seas 3 ft building to 5 ft in the afternoon. .FRI NIGHT...NE wind 30 kt. Seas 5 ft building to 8 ft after midnight. .SAT...NE wind 30 kt. Seas 9 ft. .SAT NIGHT...E wind 25 kt. Seas 6 ft. .SUN...E wind 25 kt. Seas 6 ft. .MON...SE wind 20 kt. Seas 5 ft. .TUE...E wind 20 kt. Seas 5 ft. $$ PKZ139-081400- Cook Inlet Kalgin Island to Point Bede- 352 PM AKST Thu Dec 7 2017 .TONIGHT...NE wind 15 kt. Seas 3 ft. .FRI...NE wind 10 kt increasing to 15 kt in the afternoon. Seas 3 ft. .FRI NIGHT...NE wind 20 kt. Seas 5 ft. .SAT AND SAT NIGHT...NE wind 30 kt. Seas 8 ft. .SUN...NE wind 30 kt. Seas 7 ft. .MON...E wind 15 kt. Seas 4 ft. .TUE...NE wind 15 kt. Seas 5 ft. $$ PKZ140-081400- Cook Inlet North of Kalgin Island- 352 PM AKST Thu Dec 7 2017 .TONIGHT...Variable wind 15 kt becoming NE 10 kt after midnight. Seas 3 ft. Rain. .FRI...NE wind 10 kt. Seas 3 ft. .FRI NIGHT...NE wind 15 kt. Seas 3 ft. .SAT AND SAT NIGHT...NE wind 20 kt. Seas 5 ft. .SUN...NE wind 25 kt. Seas 5 ft. .MON...E wind 15 kt. Seas 3 ft. .TUE...NE wind 15 kt. Seas 4 ft. $$ PKZ141-081400- Kachemak Bay- 352 PM AKST Thu Dec 7 2017 .TONIGHT...Variable wind less than 10 kt except E 10 kt over the outer Bay. Seas 2 ft. Rain. .FRI...Variable wind less than 10 kt except E 10 kt over the outer Bay. Seas 2 ft. .FRI NIGHT...NE wind 10 kt. Seas 2 ft. .SAT...NE wind 20 kt. Seas 3 ft. .SAT NIGHT...E wind 20 kt. Seas 4 ft. .SUN...E wind 25 kt. Seas 5 ft. .MON...SE wind 15 kt. Seas 3 ft. .TUE...NE wind 15 kt. Seas 3 ft. $$
497 FZAK51 PAFC 081242 CWFAER Coastal Waters Forecast National Weather Service Anchorage Alaska 342 AM AKST Fri Dec 8 2017 Coastal Waters Forecast for the Northern Gulf of Alaska Coast up to 100 nm out including Kodiak Island and Cook Inlet. 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. PKZ197-090215- 342 AM AKST Fri Dec 8 2017 .SYNOPSIS FOR THE NORTH GULF COAST+KODIAK ISLAND WATERS+ COOK INLET... A 980 mb low 470 nm southeast of Sand Point moves to 340 nm southeast of Sand Point at 982 mb Fri night. The low then moves 100 nm south of Sand Point at 988 mb Sat night. A strong front remains nearly stationary in the eastern Gulf through Sat night. $$ PKZ119-090215- Cape Suckling to Cape Cleare- 342 AM AKST Fri Dec 8 2017 ...GALE WARNING TODAY... .TODAY...SE wind 35 kt becoming NE 15 kt in the afternoon. Seas 13 ft. .TONIGHT...N wind 15 kt. Seas 11 ft. .SAT...E wind 30 kt. Seas 12 ft. Rain. .SAT NIGHT...SE wind 25 kt. Seas 13 ft. .SUN...SE wind 45 kt. Seas 29 ft. .MON...SE wind 35 kt. Seas 29 ft. .TUE...SE wind 30 kt. Seas 17 ft. $$ PKZ120-090215- Cape Cleare to Gore Point- 342 AM AKST Fri Dec 8 2017 ...SMALL CRAFT ADVISORY THROUGH SATURDAY... .TODAY...Variable wind 10 kt. Seas 12 ft. .TONIGHT...NE wind 15 kt. Seas 10 ft. .SAT...NE wind 30 kt. Seas 12 ft. Rain. .SAT NIGHT...SE wind 30 kt. Seas 12 ft. .SUN...E wind 45 kt. Seas 31 ft. .MON...SE wind 40 kt. Seas 31 ft. .TUE...E wind 25 kt. Seas 17 ft. $$ PKZ121-090215- Resurrection Bay- 342 AM AKST Fri Dec 8 2017 .TODAY...Variable wind less than 10 kt becoming N 10 kt in the afternoon. Seas 2 ft. .TONIGHT...N wind 10 kt. Seas 2 ft. .SAT...N wind 15 kt. Seas 3 ft. Rain. .SAT NIGHT...S wind 15 kt. Seas 3 ft. .SUN...N wind 25 kt. Seas 5 ft. .MON...S wind 20 kt. Seas 4 ft. .TUE...N wind 15 kt. Seas 3 ft. $$ PKZ125-090215- Prince William Sound- 342 AM AKST Fri Dec 8 2017 ...GALE WARNING TODAY... .TODAY...E wind 35 kt diminishing to 15 kt in the afternoon. Seas 7 ft subsiding to 2 ft in the afternoon. .TONIGHT...N wind 10 kt. Seas 2 ft. .SAT...NE wind 20 kt. Seas 3 ft. .SAT NIGHT...E wind 20 kt. Seas 4 ft. .SUN...E wind 35 kt. Seas 7 ft. .MON...SE wind 30 kt. Seas 7 ft. .TUE...E wind 25 kt. Seas 4 ft. $$ PKZ126-090215- Port Valdez- 342 AM AKST Fri Dec 8 2017 .TODAY...Variable wind less than 10 kt. Seas 2 ft. Rain. .TONIGHT...Variable wind less than 10 kt. Seas 2 ft. Snow. .SAT...Variable wind less than 10 kt becoming E 10 kt in the afternoon. Seas 2 ft. Snow and rain. .SAT NIGHT...NE wind 10 kt. Seas 2 ft. .SUN...E wind 20 kt. Seas 4 ft. .MON...E wind 15 kt. Seas 3 ft. .TUE...NE wind 10 kt. Seas 2 ft. $$ PKZ127-090215- Valdez Narrows- 342 AM AKST Fri Dec 8 2017 .TODAY...NE wind 20 kt. Seas 3 ft. Rain. .TONIGHT...NE wind 10 kt. Seas 2 ft. Snow. .SAT...NE wind 20 kt. Seas 3 ft. Rain and snow. .SAT NIGHT...N wind 25 kt. Seas 3 ft. .SUN...NE wind 30 kt. Seas 4 ft. .MON...NE wind 25 kt. Seas 3 ft. .TUE...NE wind 10 kt. Seas 2 ft. $$ PKZ128-090215- Valdez Arm- 342 AM AKST Fri Dec 8 2017 .TODAY...NE wind 20 kt. Seas 4 ft. Rain. .TONIGHT...NE wind 10 kt in the evening becoming variable less than 10 kt. Seas 2 ft. Rain. .SAT...NE wind 10 kt increasing to 15 kt in the afternoon. Seas 3 ft. Rain. .SAT NIGHT...NE wind 20 kt. Seas 4 ft. .SUN...NE wind 30 kt. Seas 5 ft. .MON...E wind 30 kt. Seas 5 ft. .TUE...NE wind 10 kt. Seas 2 ft. $$ PKZ129-090215- Passage Canal- 342 AM AKST Fri Dec 8 2017 .TODAY...E wind 20 kt in the morning becoming variable less than 10 kt. Seas 3 ft subsiding to 1 ft. Rain. .TONIGHT...Variable wind less than 10 kt. Seas 2 ft. .SAT...E wind 10 kt increasing to 15 kt in the afternoon. Seas 2 ft. .SAT NIGHT...E wind 20 kt. Seas 3 ft. .SUN THROUGH MON...E wind 25 kt. Seas 4 ft. .TUE...E wind 15 kt. Seas 2 ft. $$ PKZ130-090215- West of Barren Islands including Kamishak Bay- 342 AM AKST Fri Dec 8 2017 ...GALE WARNING SATURDAY... .TODAY...SE wind 20 kt. Seas 7 ft. .TONIGHT...NE wind 25 kt. Seas 8 ft. .SAT...NE wind 25 kt increasing to 35 kt in the afternoon. Seas 8 ft building to 13 ft in the afternoon. .SAT NIGHT...E wind 35 kt. Seas 14 ft. .SUN...E wind 40 kt. Seas 17 ft. .MON...SE wind 30 kt. Seas 13 ft. .TUE...E wind 25 kt. Seas 7 ft. $$ PKZ131-090215- Barren Islands East- 342 AM AKST Fri Dec 8 2017 ...GALE WARNING SATURDAY... .TODAY...SE wind 15 kt. Seas 12 ft. .TONIGHT...E wind 20 kt. Seas 10 ft. .SAT...NE wind 35 kt. Seas 12 ft. Rain. .SAT NIGHT...SE wind 30 kt. Seas 12 ft. .SUN...E wind 45 kt. Seas 29 ft. .MON...SE wind 40 kt. Seas 29 ft. .TUE...E wind 30 kt. Seas 17 ft. $$ PKZ132-090215- Marmot Island to Sitkinak- 342 AM AKST Fri Dec 8 2017 ...GALE WARNING SATURDAY... .TODAY...SE wind 15 kt becoming E 25 kt in the afternoon. Seas 11 ft. .TONIGHT...E wind 30 kt. Seas 13 ft. .SAT...E wind 35 kt. Seas 13 ft. Rain. .SAT NIGHT...SE wind 25 kt. Seas 12 ft. .SUN THROUGH MON...SE wind 40 kt. Seas 23 ft. .TUE...E wind 25 kt. Seas 18 ft. $$ PKZ136-090215- Chiniak Bay- 342 AM AKST Fri Dec 8 2017 ...SMALL CRAFT ADVISORY SATURDAY... .TODAY...S wind 10 kt becoming E 15 kt in the afternoon. Seas 4 ft. .TONIGHT...E wind 15 kt. Seas 4 ft. .SAT...NE wind 30 kt. Seas 10 ft. Rain. .SAT NIGHT...SE wind 20 kt. Seas 7 ft. .SUN...E wind 30 kt. Seas 12 ft. .MON...SE wind 30 kt. Seas 7 ft. .TUE...E wind 20 kt. Seas 7 ft. $$ PKZ137-090215- Marmot Bay- 342 AM AKST Fri Dec 8 2017 ...SMALL CRAFT ADVISORY SATURDAY... .TODAY...SE wind 10 kt becoming E 15 kt in the afternoon. Seas 4 ft. .TONIGHT...E wind 15 kt. Seas 4 ft. .SAT...NE wind 20 kt increasing to 30 kt in the afternoon. Seas 10 ft. Rain. .SAT NIGHT...SE wind 20 kt. Seas 7 ft. .SUN...E wind 30 kt. Seas 12 ft. .MON...SE wind 30 kt. Seas 9 ft. .TUE...E wind 20 kt. Seas 7 ft. $$ PKZ138-090215- Shelikof Strait- 342 AM AKST Fri Dec 8 2017 ...GALE WARNING TONIGHT AND SATURDAY... .TODAY...E wind 20 kt. Seas 3 ft building to 5 ft in the afternoon. .TONIGHT...NE wind 35 kt. Seas 5 ft building to 12 ft after midnight. .SAT...NE wind 35 kt. Seas 14 ft. Rain. .SAT NIGHT...NE wind 35 kt. Seas 14 ft. .SUN...E wind 40 kt. Seas 13 ft. .MON...SE wind 25 kt. Seas 5 ft. .TUE...E wind 25 kt. Seas 6 ft. $$ PKZ139-090215- Cook Inlet Kalgin Island to Point Bede- 342 AM AKST Fri Dec 8 2017 ...SMALL CRAFT ADVISORY SATURDAY... .TODAY...NE wind 15 kt. Seas 3 ft. .TONIGHT...NE wind 20 kt. Seas 6 ft. .SAT...NE wind 30 kt. Seas 7 ft building to 11 ft in the afternoon. .SAT NIGHT...NE wind 35 kt. Seas 10 ft. .SUN...NE wind 40 kt. Seas 14 ft. .MON...SE wind 30 kt. Seas 10 ft. .TUE...NE wind 20 kt. Seas 5 ft. $$ PKZ140-090215- Cook Inlet North of Kalgin Island- 342 AM AKST Fri Dec 8 2017 .TODAY...NE wind 10 kt. Seas 3 ft. Patchy fog. .TONIGHT...N wind 15 kt. Seas 3 ft. Areas of fog. .SAT...NE wind 20 kt. Seas 3 ft building to 5 ft in the afternoon. Areas of fog. .SAT NIGHT...NE wind 25 kt. Seas 7 ft. .SUN...NE wind 30 kt. Seas 10 ft. .MON...SE wind 20 kt. Seas 6 ft. .TUE...NE wind 15 kt. Seas 4 ft. $$ PKZ141-090215- Kachemak Bay- 342 AM AKST Fri Dec 8 2017 .TODAY...E wind 10 kt. Seas 2 ft. .TONIGHT...NE wind 10 kt. Seas 2 ft. .SAT...NE wind 10 kt increasing to 20 kt in the afternoon. Seas 3 ft. .SAT NIGHT...E wind 20 kt. Seas 3 ft. .SUN...E wind 35 kt. Seas 7 ft. .MON...SE wind 30 kt. Seas 5 ft. .TUE...E wind 20 kt. Seas 4 ft. $$
What forecasters said that day
The local office's own words before this small craft advisory 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 small craft advisory went out at Dec 6, 4:11 AM AKST, 11 hours 38 minutes earlier.
Area forecast discussion, Dec 6, 4:11 AM AKST, 11 hours 38 minutes before
Southcentral and Southwest Alaska Forecast Discussion National Weather Service Anchorage AK 411 AM AKST Wed Dec 6 2017 .ANALYSIS AND UPPER LEVELS... The very active pattern across southern Alaska continues this morning. In the upper levels, a very deep, highly amplified trough persists over most of the Bering and southwest Alaska extending south well past 40N. A strong upper level low is really driving the pattern, as two very strong jet streaks, on opposite sides of the low, continue to keep the feature largely stationary. However, frequent shortwaves rotating around the low get caught in the very strong jets, and for southern Alaska, get sent racing northward out of the subtropical Pacific into the Gulf Coast. These waves are bringing along with it copious Pacific moisture, which being confined to the jet, becomes what's called an "atmospheric river". Atmospheric rivers are known for bringing lots of precipitation and warm temperatures to the areas affected. When they remain nearly stationary for long periods of time, as is happening to Southcentral, prodigious amounts of rain and snow occur as a result. Thus, snowfall amounts away from the coast towards Thompson Pass and the Copper Basin will be measured in feet. For Southwest Alaska and the Bering, those areas are under persistent upper level troughing, so while the weather isn't quiet, it certainly is far less impactful. The cold air aloft has made the atmosphere quite unstable across those regions, so scattered convective snow showers remain the primary weather concern, along with areas of fog as the winds largely remain light across the area. && .MODEL DISCUSSION... The models are in decent agreement through the first 24 hours, regarding the track of the next low to impact southern Alaska, taking a track south and west of Kodiak Island. The associated warm front extends northeast from the center of the low right up the western Gulf Coast into Prince William Sound late Wednesday night into Thursday. This pattern will result in another surge of southerly winds into southern Alaska behind the front, with more downsloping and warm temperatures the result. Another front may impact the same area late Thursday into Friday, but the models are in much less agreement on the strength and timing of that front. Yet another low moves into the Gulf Friday, but the models are in even more disagreement. In short, confidence rapidly diminishes beyond 24 hours timing each of these waves, and their impacts on where the cold and warm air masses are. && .AVIATION... PANC...A storm system making its way into Southcentral will largely miss Anchorage. However a chance remains of some snow showers this morning that may briefly drop ceilings to MVFR. VFR conditions with light winds return no later than midday, and persist into the evening. A northerly down-Inlet wind will develop Thursday morning. && .SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2)... A deep and moist southerly upper level flow and associated frontal boundary extends north across the Gulf to over the Copper River Basin. A weak wave riding north along the frontal boundary will move across the Cook Inlet region this morning a usher in a little cold air to that region and allow for some relatively light snowfall across the Anchorage Bowl and lower elevations of the Matanuska Valley today. Snow will likely be heavy from Thompson Pass north to over portions of the Copper River Basin through early this evening, though warm air holding over the southeastern Copper River Basin will likely keep a mix of rain and snow. Warm temps along the north Gulf Coast will keep precipitation as rain. The deep moisture plume and associated surface front will move slowly east through today with precipitation diminishing across much of the Anchorage Bowl this afternoon. A developing surface low and associated front move north and west across the Gulf late tonight and Thursday. This will usher in another bout of warming temperatures, windy conditions, and mixed precipitation types (mainly rain along the coasts) to Southcentral. && .SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2)... Currently a cold upper level trough is rotating through Southwest Alaska and will continue north up the west coast of Alaska today. Weak upper level ridging will build in from the southeast and up over interior Southwest Alaska tonight. This ridging will clear skies and warm mid-levels slightly. This will both strengthen the inversion and bring the potential for some valley fog and cold overnight tempertures to wind sheltered locations. A surface low lifting north into the far southwestern Gulf and increasing east to northeasterly flow across Southwest Alaska late tonight through Thursday will help counterbalance this...especially in locations near gaps or mountain passes along the west slope of the Aleutain and Alaska Range. && .SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)... Broad upper troughing with multiple low centers drifting around continues over the Bering. A more organized frontal system will track from west to east down the length but to the south of the Aleutian chain today and tonight before moving away to the southeast Thursday. Stronger northerly flow will develop over the Bering on Friday as ridging builds over the western Aleutians and a low persists south of the Alaska Peninsula. && .LONG TERM FORECAST (Days 3 through 7)... The long term forecast shows no significant change in the overall weather pattern that is currently locked in place. Strong ridging over the eastern Gulf of Alaska will continue to steer numerous weather systems into southern Alaska, and especially Southcentral Alaska. Multiple rounds of heavy rain (and mountain snow) are likely along the north Gulf Coast and Prince William sound through this weekend. Meanwhile, most inland areas will be shielded from most or all of this precipitation. There is some model agreement on a stronger and more significant low climbing up the ridge and slamming into southern Alaska with a strong front in the Sunday/Monday time period, but details are still very much unclear at this time. Meanwhile, weather across the Bering Sea and Aleutians will be unsettled but actually more benign than normal. No major storm systems (i.e. storm-force or stronger) are expected in the next week. && .AFC WATCHES/WARNINGS/ADVISORIES... PUBLIC...Winter Storm Warning: 131 141. MARINE...Gale Warning: 119 125 130 131 138 139 351. && SYNOPSIS AND MODEL DISCUSSION...JPW SOUTHCENTRAL ALASKA...RMC SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...JR LONG TERM...AMD
In the hours before
Local storm report, Dec 6, 1:42 PM AKST, 2 hours 7 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ANCHORAGE AK
142 PM AKST WED DEC 06 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0630 AM HEAVY SNOW VALDEZ 61.08N 146.30W
12/06/2017 M12.0 INCH AK PUBLIC
12 IN OF SNOW FROM LAST NIGHT UNTIL 630AM.
1200 PM HEAVY SNOW VALDEZ 61.08N 146.30W
12/06/2017 M16.0 INCH AK LAW ENFORCEMENT
16 IN OF SNOW SINCE LAST NIGHT. HAS BEEN SNOWING
CONSISTENTLY FROM 6AM-NOON, OTHER THAN BRIEF PERIOD,HALF
HOUR TO HOUR, OF RAIN THIS MORNING. NO DAMAGE REPORTS
HAVE BEEN REPORTED.
1230 PM HEAVY SNOW EUREKA 61.93N 147.17W
12/06/2017 M14.0 INCH AK PUBLIC
14 IN OF SNOW IN 24 HOURS. DANGEROUS DRIVING CONDITIONS,
ESPECIALLY TO GLENNALLEN. SNOW STARTED SLOWLY DOWN AROUND
NOON.
1230 PM HEAVY SNOW EUREKA 61.93N 147.17W
12/06/2017 M12.0 INCH AK DEPT OF HIGHWAYS
REPORTED 2-8 IN AT DOT STATION FROM LAST NIGHT. WIENER
LAKE HAD 12 IN.
0130 PM HEAVY SNOW GLENNALLEN 62.08N 145.60W
12/06/2017 M9.2 INCH AK PUBLIC
9.2 IN OF SNOW TOTAL FROM 10AM YESTERDAY UNTIL 1PM TODAY.
STARTED 10AM YESTERDAY MORNING AND STOPPED IN AFTERNOON,
ABOUT 2 OF SNOW IN THIS TIME. STARTED BACK UP AROUND
MIDNIGHT. HEAVY, WET SNOW.
&&
AHILLLocal storm report, Dec 6, 1:46 PM AKST, 2 hours 3 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ANCHORAGE AK
146 PM AKST WED DEC 06 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1000 AM HEAVY SNOW THOMPSON PASS 61.14N 145.75W
12/06/2017 M40.0 INCH AK DEPT OF HIGHWAYS
15 IN OF SNOW IN 90 MINS THIS MORNING. 40 IN TOTAL IN
PAST 12 HOURS. SE WINDS AT 30 MPH CREATING 6 FT SNOW
DRIFTS. AVALANCHES CROSSING THE ROAD, ROAD IS IMPASSABLE.
&&
AHILLThe office that day
Everything else NWS Anchorage, AK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 6, 3:12 PM AKST | Small Craft Advisory | AFC | 72 hr | |
| Dec 6, 4:59 PM AKST | Winter Weather Advisory | AFC | 43 hr | |
| Dec 7, 3:40 AM AKST | Small Craft Advisory | AFC | 24 hr | |
| Dec 7, 3:40 AM AKST | Storm Warning | AFC | 12 hr | |
| Dec 7, 3:41 AM AKST | Gale Warning | AFC | 48 hr | |
| Dec 7, 3:52 AM AKST | Gale Warning | AFC | 48 hr | |
| Dec 7, 3:52 AM AKST | Small Craft Advisory | AFC | 6 days |
Nearby
Small Craft Advisories in Alaska, 2017Every small craft advisory in 2017
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.