Alert archive / Alaska / Gale Warnings in 2017
Gale Warning 685, NWS Anchorage, AK
NWS Anchorage, AK issued this gale warning at Dec 20, 2017, 3:30 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
- Dec 20, 2017, 3:30 AM AKST (12:30 UTC)
- Expired
- Dec 24, 2017, 3:28 AM AKST
- In force
- 4 days
- Issued by
- NWS Anchorage, AK
The text
As transmitted.
802 FZAK61 PAFC 201230 OFFAER Offshore Waters Forecast National Weather Service Anchorage AK 330 AM AKST Wed Dec 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. PKZ399-210130- 330 AM AKST Wed Dec 20 2017 .SYNOPSIS FOR THE WESTERN GULF OF ALASKA... A front enters the western Gulf Thu morning then it moves into the northeastern Gulf Fri morning. $$ PKZ351-210130- Gulf of Alaska Offshore North of 57N and West of 144W- 330 AM AKST Wed Dec 20 2017 ...GALE WARNING THURSDAY... .TODAY...W wind 10 to 20 kt. Seas 5 to 9 ft. .TONIGHT...NW wind up to 15 kt becoming NE after midnight. Seas 5 to 8 ft. .THU...E wind 20 to 35 kt. Seas 6 to 10 ft. .THU NIGHT...SE wind 30 to 45 kt. Seas 11 to 19 ft. .FRI THROUGH SAT...SE wind 30 to 45 kt. Seas 16 to 28 ft. .SUN...S wind up to 20 kt. Seas 12 to 20 ft. $$ PKZ352-210130- Gulf of Alaska Offshore South of 57N North of 55N and West of 144W- 330 AM AKST Wed Dec 20 2017 ...STORM WARNING THURSDAY... .TODAY...NW wind 10 to 15 kt. Seas 7 to 12 ft. .TONIGHT...NE wind up to 20 kt becoming E 15 to 30 kt after midnight. Seas 7 to 10 ft. .THU...E wind 25 to 40 kt increasing to 35 to 50 kt in the afternoon. Seas 8 to 12 ft building to 10 to 18 ft in the afternoon. .THU NIGHT...SE wind 35 to 50 kt. Seas 14 to 29 ft. .FRI THROUGH SAT...SE wind 30 to 45 kt. Seas 18 to 27 ft. .SUN...S wind up to 15 kt. Seas 10 to 18 ft. $$
8 follow-up statements
622 FZAK61 PAFC 202352 OFFAER Offshore Waters Forecast National Weather Service Anchorage AK 252 PM AKST Wed Dec 20 2017 Offshore waters forecast for the Gulf of Alaska West of 144W Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ399-211415- 252 PM AKST Wed Dec 20 2017 .SYNOPSIS FOR THE WESTERN GULF OF ALASKA... A strong front moves into the western Gulf Thu morning and moves east through Fri afternoon. $$ PKZ351-211415- Gulf of Alaska Offshore North of 57N and West of 144W- 252 PM AKST Wed Dec 20 2017 ...GALE WARNING THURSDAY AND THURSDAY NIGHT... .TONIGHT...NW wind up to 15 kt becoming NE after midnight. Seas 5 to 8 ft. .THU...E wind 20 to 35 kt. Seas 5 to 10 ft. .THU NIGHT...SE wind 30 to 45 kt. Seas 8 to 16 ft building to 14 to 22 ft after midnight. .FRI...SE wind 35 to 45 kt. Seas 17 to 26 ft. .FRI NIGHT...SE wind 40 kt. Seas 22 to 26 ft. .SAT...SE wind 25 to 40 kt. Seas 19 to 23 ft. .SUN...S wind up to 20 kt. Seas 12 to 20 ft. .MON...NE wind up to 10 kt. Seas 5 to 8 ft. $$ PKZ352-211415- Gulf of Alaska Offshore South of 57N North of 55N and West of 144W- 252 PM AKST Wed Dec 20 2017 ...STORM WARNING THURSDAY AND THURSDAY NIGHT... .TONIGHT...NE wind up to 20 kt becoming E 15 to 30 kt after midnight. Seas 9 ft. .THU...E wind 25 to 40 kt increasing to 35 to 50 kt in the afternoon. Seas 9 to 17 ft. .THU NIGHT...SE wind 35 to 50 kt. Seas 14 to 29 ft. Rain. .FRI...SE wind 35 to 45 kt. Seas 22 to 28 ft. .FRI NIGHT...SE wind 25 to 40 kt. Seas 20 to 25 ft. .SAT...SE wind 25 to 40 kt. Seas 18 to 22 ft. .SUN...S wind up to 15 kt. Seas 10 to 18 ft. .MON...NE wind up to 15 kt. Seas 7 ft. $$
239 FZAK61 PAFC 211234 OFFAER Offshore Waters Forecast National Weather Service Anchorage AK 334 AM AKST Thu Dec 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- 334 AM AKST Thu Dec 21 2017 .SYNOPSIS FOR THE WESTERN GULF OF ALASKA... A front in the western Gulf will move into the northern Gulf Fri morning and stay nearly stationary through Sat morning. $$ PKZ351-220200- Gulf of Alaska Offshore North of 57N and West of 144W- 334 AM AKST Thu Dec 21 2017 ...GALE WARNING THROUGH FRIDAY... .TODAY...E wind 10 to 25 kt increasing to 20 to 35 kt in the afternoon. Seas 5 to 10 ft. .TONIGHT...E wind 30 to 45 kt. Seas 8 to 16 ft building to 14 to 22 ft after midnight. .FRI...SE wind 35 to 45 kt. Seas 17 to 26 ft. .FRI NIGHT...SE wind 35 to 45 kt. Seas 22 to 26 ft. .SAT...SE wind 25 to 40 kt. Seas 16 to 26 ft. .SUN...S wind 15 to 25 kt. Seas 11 to 16 ft. .MON...W wind up to 15 kt. Seas 5 to 8 ft. $$ PKZ352-220200- Gulf of Alaska Offshore South of 57N North of 55N and West of 144W- 334 AM AKST Thu Dec 21 2017 ...STORM WARNING TONIGHT... .TODAY...E wind 30 to 45 kt. Seas 9 to 17 ft. .TONIGHT...SE wind 35 to 50 kt. Seas 14 to 29 ft. Rain. .FRI...SE wind 35 to 45 kt. Seas 22 to 28 ft. Rain. .FRI NIGHT...SE wind 30 to 45 kt. Seas 20 to 25 ft. .SAT...S wind 20 to 35 kt. Seas 16 to 24 ft. .SUN...SW wind 15 to 25 kt. Seas 11 to 19 ft. .MON...SW wind up to 15 kt. Seas 4 to 8 ft. $$
820 FZAK61 PAFC 212351 OFFAER Offshore Waters Forecast National Weather Service Anchorage AK 251 PM AKST Thu Dec 21 2017 Offshore waters forecast for the Gulf of Alaska West of 144W Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ399-221400- 251 PM AKST Thu Dec 21 2017 .SYNOPSIS FOR THE WESTERN GULF OF ALASKA... A 976 mb low at 50N 160W moves north into the eastern Bering tonight. A front in the western Gulf will move into the northern Gulf Fri afternoon and stay nearly stationary through Sat afternoon. A 977 mb low at 48N 155W Fri afternoon moves to 54N 157W at 985 mb Sat afternoon. $$ PKZ351-221400- Gulf of Alaska Offshore North of 57N and West of 144W- 251 PM AKST Thu Dec 21 2017 ...GALE WARNING THROUGH FRIDAY NIGHT... .TONIGHT...E wind 30 to 45 kt. Seas 10 to 18 ft. .FRI...SE wind 35 to 45 kt. Seas 16 to 24 ft. .FRI NIGHT...E wind 35 to 45 kt. Seas 18 to 23 ft. .SAT...SE wind 25 to 40 kt. Seas 19 to 26 ft. .SAT NIGHT...SE wind 20 to 35 kt. Seas 16 to 23 ft. .SUN...S wind 15 to 25 kt. Seas 11 to 16 ft. .MON THROUGH TUE...SW wind up to 15 kt. Seas 3 to 8 ft. $$ PKZ352-221400- Gulf of Alaska Offshore South of 57N North of 55N and West of 144W- 251 PM AKST Thu Dec 21 2017 ...STORM WARNING TONIGHT... .TONIGHT...SE wind 35 to 50 kt. Seas 15 to 29 ft. Rain. .FRI...SE wind 35 to 45 kt. Seas 21 to 28 ft. Rain. .FRI NIGHT...SE wind 45 kt diminishing to 30 to 40 kt after midnight. Seas 22 to 25 ft. Rain. .SAT...SE wind 25 to 40 kt. Seas 18 to 26 ft. .SAT NIGHT...S wind 15 to 25 kt. Seas 16 to 19 ft. .SUN...SW wind 25 kt. Seas 11 to 19 ft. .MON THROUGH TUE...SE wind up to 15 kt. Seas 4 to 9 ft. $$
718 FZAK61 PAFC 221241 OFFAER Offshore Waters Forecast National Weather Service Anchorage AK 341 AM AKST Fri Dec 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. PKZ399-230145- 341 AM AKST Fri Dec 22 2017 .SYNOPSIS FOR THE WESTERN GULF OF ALASKA... A front enters the Western Gulf Sat afternoon and moves across the Gulf through Sun morning. A 990 mb low slides along the front to 55N 154W by Sun morning. $$ PKZ351-230145- Gulf of Alaska Offshore North of 57N and West of 144W- 341 AM AKST Fri Dec 22 2017 ...GALE WARNING THROUGH SATURDAY... .TODAY...SE wind 35 to 45 kt. Seas 15 to 25 ft. .TONIGHT...E wind 35 to 45 kt. Seas 18 to 23 ft. .SAT...E wind 30 to 45 kt. Seas 18 to 24 ft. Rain. .SAT NIGHT...SE wind 20 to 35 kt. Seas 16 to 22 ft. .SUN...S wind 15 to 25 kt. Seas 13 to 17 ft. .MON...W wind up to 20 kt. Seas 8 to 13 ft. .TUE...S wind up to 10 kt. Seas 3 to 5 ft. $$ PKZ352-230145- Gulf of Alaska Offshore South of 57N North of 55N and West of 144W- 341 AM AKST Fri Dec 22 2017 ...GALE WARNING THROUGH SATURDAY... .TODAY...SE wind 35 to 45 kt. Seas 21 to 29 ft. Rain. .TONIGHT...SE wind 45 kt. Seas 21 to 25 ft. Rain. .SAT...SE wind 30 to 45 kt diminishing to 20 to 35 kt in the afternoon. Seas 20 to 24 ft. Rain. .SAT NIGHT...S wind 15 to 25 kt. Seas 15 to 20 ft. .SUN...SW wind 15 to 30 kt. Seas 13 to 21 ft. .MON...SW wind up to 20 kt. Seas 8 to 13 ft. .TUE...SE wind up to 20 kt. Seas 4 to 9 ft. $$
149 FZAK61 PAFC 222355 OFFAER Offshore Waters Forecast National Weather Service Anchorage AK 255 PM AKST Fri Dec 22 2017 Offshore waters forecast for the Gulf of Alaska West of 144W Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ399-231430- 255 PM AKST Fri Dec 22 2017 .SYNOPSIS FOR THE WESTERN GULF OF ALASKA... A front in the southwestern Gulf moves to the northeastern Gulf Sat afternoon. A 978 mb low at 48N 155W moves to 56N 153W at 1000 mb Sun afternoon. $$ PKZ351-231430- Gulf of Alaska Offshore North of 57N and West of 144W- 255 PM AKST Fri Dec 22 2017 ...GALE WARNING THROUGH SATURDAY NIGHT... .TONIGHT...E wind 35 to 45 kt. Seas 18 to 26 ft. .SAT...E wind 35 to 45 kt. Seas 18 to 24 ft. Rain. .SAT NIGHT...SE wind 25 to 40 kt. Seas 16 to 22 ft. Widespread rain showers. .SUN...S wind 10 to 25 kt. Seas 12 to 16 ft. .SUN NIGHT...S wind 15 to 25 kt. Seas 12 to 15 ft. .MON...SW wind up to 20 kt. Seas 7 to 12 ft. .TUE...S wind up to 10 kt. Seas 3 to 5 ft. .WED...E wind 10 to 25 kt. Seas 9 to 17 ft. $$ PKZ352-231430- Gulf of Alaska Offshore South of 57N North of 55N and West of 144W- 255 PM AKST Fri Dec 22 2017 ...GALE WARNING THROUGH SATURDAY... .TONIGHT...E wind 45 kt. Seas 22 to 28 ft. Rain. .SAT...SE wind 30 to 45 kt. Seas 20 to 24 ft. Rain. .SAT NIGHT...SE wind 15 to 30 kt. Seas 17 to 21 ft. .SUN...S wind 15 to 30 kt. Seas 13 to 18 ft. .SUN NIGHT...SW wind 15 to 30 kt. Seas 12 to 17 ft. .MON THROUGH TUE...SE wind up to 20 kt. Seas 6 to 11 ft. .WED...SE wind 15 to 30 kt. Seas 13 to 20 ft. $$
193 FZAK61 PAFC 231244 OFFAER Offshore Waters Forecast National Weather Service Anchorage AK 344 AM AKST Sat Dec 23 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. PKZ399-240130- 344 AM AKST Sat Dec 23 2017 .SYNOPSIS FOR THE WESTERN GULF OF ALASKA... A 986 mb low at 54N 158W Sat afternoon extends a front into the Western Gulf that moves across the Northern Gulf by Mon morning. The low will move to 58N 153W at 1013 mb by Mon morning. $$ PKZ351-240130- Gulf of Alaska Offshore North of 57N and West of 144W- 344 AM AKST Sat Dec 23 2017 ...GALE WARNING THROUGH TONIGHT... .TODAY...E wind 35 to 45 kt. Seas 18 to 25 ft. .TONIGHT...SE wind 20 to 35 kt. Seas 17 to 21 ft. Rain. .SUN...S wind 10 to 25 kt. Seas 13 to 16 ft. .SUN NIGHT...SW wind 10 to 20 kt. Seas 12 ft. .MON...W wind 10 to 25 kt. Seas 7 to 12 ft. .TUE THROUGH WED...E wind 10 to 20 kt. Seas 7 ft. $$ PKZ352-240130- Gulf of Alaska Offshore South of 57N North of 55N and West of 144W- 344 AM AKST Sat Dec 23 2017 ...GALE WARNING TODAY... .TODAY...SE wind 30 to 45 kt. Seas 20 to 27 ft. Rain. .TONIGHT...S wind 15 to 30 kt. Seas 16 to 20 ft. Rain. .SUN...S wind 15 to 25 kt. Seas 15 ft. .SUN NIGHT...SW wind 15 to 25 kt. Seas 12 to 17 ft. .MON...W wind 10 to 25 kt. Seas 7 to 12 ft. .TUE THROUGH WED...E wind up to 20 kt. Seas 6 to 11 ft. $$
978 FZAK61 PAFC 240002 OFFAER Offshore Waters Forecast National Weather Service Anchorage AK 302 PM AKST Sat Dec 23 2017 Offshore waters forecast for the Gulf of Alaska West of 144W Wind forecasts reflect the predominant speed and direction expected. Sea forecasts represent an average of the highest one-third of the combined wind wave and swell height. PKZ399-241400- 302 PM AKST Sat Dec 23 2017 .SYNOPSIS FOR THE WESTERN GULF OF ALASKA... A strong front continues to move across the Gulf through Sun night. $$ PKZ351-241400- Gulf of Alaska Offshore North of 57N and West of 144W- 302 PM AKST Sat Dec 23 2017 ...GALE WARNING TONIGHT... .TONIGHT...SE wind 20 to 35 kt. Seas 17 to 21 ft. Rain. .SUN...S wind 10 to 25 kt. Seas 13 to 16 ft. Rain. .SUN NIGHT...SW wind 10 to 25 kt. Seas 12 ft. .MON...SW wind 15 to 25 kt. Seas 9 to 13 ft. .MON NIGHT...W wind 15 kt. Seas 5 to 9 ft. .TUE THROUGH WED...E wind 10 to 20 kt. Seas 4 to 8 ft. .THU...E wind 20 kt. Seas 9 to 15 ft. $$ PKZ352-241400- Gulf of Alaska Offshore South of 57N North of 55N and West of 144W- 302 PM AKST Sat Dec 23 2017 .TONIGHT...S wind 15 to 30 kt. Seas 16 to 21 ft. Rain. .SUN...S wind 15 to 25 kt. Seas 12 to 17 ft. .SUN NIGHT...SW wind 15 to 25 kt. Seas 12 to 17 ft. .MON...W wind 10 to 25 kt. Seas 8 to 13 ft. .MON NIGHT...W wind up to 15 kt. Seas 5 to 8 ft. .TUE THROUGH WED...E wind up to 20 kt. Seas 6 to 11 ft. .THU...E wind 25 kt. Seas 12 to 15 ft. $$
540 FZAK61 PAFC 241228 OFFAER Offshore Waters Forecast National Weather Service Anchorage AK 328 AM AKST Sun Dec 24 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. PKZ399-250200- 328 AM AKST Sun Dec 24 2017 .SYNOPSIS FOR THE WESTERN GULF OF ALASKA... A 994 mb low at 56N 158W follows a strong front across the Gulf to 59N 141W at 1028 mb by Tue morning. High pressure pushes into the Southwestern Gulf for Tue morning. $$ PKZ351-250200- Gulf of Alaska Offshore North of 57N and West of 144W- 328 AM AKST Sun Dec 24 2017 .TODAY...S wind 10 to 25 kt. Seas 13 to 16 ft. Rain. .TONIGHT...SW wind 10 to 25 kt. Seas 12 ft. .MON...SW wind 15 to 25 kt. Seas 11 ft. .MON NIGHT...W wind 15 kt. Seas 5 to 9 ft. .TUE...NW wind up to 15 kt. Seas 5 ft. .WED THROUGH THU...E wind 10 to 25 kt. Seas 6 to 11 ft. $$ PKZ352-250200- Gulf of Alaska Offshore South of 57N North of 55N and West of 144W- 328 AM AKST Sun Dec 24 2017 .TODAY...S wind 15 to 25 kt. Seas 15 ft. .TONIGHT...SW wind 15 to 25 kt. Seas 12 to 17 ft. .MON...W wind 10 to 25 kt. Seas 8 to 13 ft. .MON NIGHT...W wind up to 15 kt. Seas 5 to 8 ft. .TUE THROUGH THU...NE wind 10 to 25 kt. Seas 6 to 11 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 Dec 19, 4:25 PM AKST, 11 hours 5 minutes earlier.
Area forecast discussion, Dec 19, 4:25 PM AKST, 11 hours 5 minutes before
Southcentral and Southwest Alaska Forecast Discussion National Weather Service Anchorage AK 425 PM AKST Tue Dec 19 2017 .ANALYSIS AND UPPER LEVELS... The dominant large-scale weather feature this afternoon remains a once powerful but now weakening Bering Sea low with the main circulation center moving towards the Bering Strait. A southwest to northeast oriented upper level jet can be seen on water vapor moving eastward as it tracks from Southwest Alaska to Southcentral. Deep layer southwest flow aloft is bringing in a slug of moisture to Cook Inlet and Prince William Sound with MIMIC TPW imagery depicting a narrow but intact filament of enhanced water vapor values. Over the remainder of the Bering Sea and Southwest Alaska, broad southwest cold sector flow is supporting a convectively enhanced showery environment. Finally, east of Kamchatka, two separate shortwave troughs are forming along a baroclinic zone, with the southern stream low eventually becoming a powerful storm force front over the Bering Sea later tonight. && .MODEL DISCUSSION... The numerical weather models are in excellent agreement with the general pattern heading into the weekend. However, they differ with a series of lows moving through the Bering Sea Wednesday through Friday, with each track of a low affecting the track of the next low. For now, a general blended approach was favored although the GFS model was given additional weighting, especially by Friday as a powerful warm front/low moves through the Southwest part of Alaska. For Southcentral, model discrepancy was low and forecast confidence is high. && .AVIATION... PANC...Snow at the terminal is expected to taper off quickly during the mid-evening timeframe. VFR CIGS and VSBYs are expected through the remainder of the TAF period. && .SHORT TERM FORECAST SOUTHCENTRAL ALASKA (Days 1 and 2)... The front over Southcentral late this afternoon will pick up speed this evening an upper level short-wave drives it eastward. Thus, expect a rapid end to steady snow over the Cook Inlet-Susitna Valley corridor early this evening, then over Prince William Sound and the Copper Basin overnight tonight. An unstable air mass behind the front combined with persistent low level southwest flow will produce some showers or areas of snow in upslope areas of the Susitna Valley, Talkeetna Mountains, and Alaska Range through Wednesday. A strong ridge will then build over the region Wednesday, leading to dry conditions with temperatures falling to more seasonable norms. These falling temperatures will lead to development of surface inversions which will be favorable for fog to develop, especially in and along Cook Inlet. && .SHORT TERM FORECAST SOUTHWEST ALASKA (Days 1 and 2)... Gusty southwesterly winds and widespread snow shower activity will continue through Wednesday morning as unstable air continues to move in from the Bering Sea. No significant accumulations are expected, with temperatures hovering around freezing limiting the ability for anywhere to get more than a dusting of snow. Weather across the eastern half of the area will settle a bit Wednesday afternoon through the overnight hours as weak ridging (high pressure) moves into the area. The Kuskokwim Delta, and especially the coastal villages along the Delta, will get clipped by a fast- moving but pretty potent storm Wednesday evening/night. Another round of 45-55 mph southwesterly winds should be expected as this storm passes through. The heaviest precipitation should stay to the north, but the winds will produce significant wave action and higher water levels that may impact coastal locations. With moderate tides, forecasted water levels should remain fairly close to highest astronomical tide levels, but rough wave action on top of the water could produce some localized impacts from erosion if the strongest winds happen to coincide with the high tides. By Thursday morning this storm will be moving away, and some patchy fog to start the day is possible across much of the area. This fog will quickly dissipate as a new storm track starts to take hold which will bring increasingly strong east and southeast winds to the Bristol Bay zone on Thursday night into the day Friday. There is still uncertainty with where the strongest winds will develop, so stay tuned. A high wind watch is in effect for the area. && .SHORT TERM FORECAST BERING SEA/ALEUTIANS (Days 1 and 2)... Meanwhile, the Bering Sea and Aleutians will stay quick active over the next few days and even as we transition into a new overall weather pattern in the longer range periods. The quick- hitting storm that will clip parts of Southwest Alaska will have a more widespread impact on the Bering/Aleutians. The Adak area will see winds continue to ramp up dramatically overnight tonight, and should peak during the morning hours on Wednesday. There could be a few gusts that approach 75 mph, but these should only last an hour or two. This weather front will stall over the central Aleutians as another low forms along the front and moves up from the south on Thursday. && .LONG TERM FORECAST (Thursday through Tuesday)... Starting Thursday, a ridge of high pressure will be firmly in place over the mainland, which will change the track of the low pressure systems traversing the forecast area. Instead of moving in from the west, the next two low pressure systems will approach from the south and bring a lot more moisture, which will cause heavy precipitation along the North Pacific coast, including the oceanward side of the Kenai Peninsula. The first weather concern is for southwest Alaska on Thursday and Friday, as the approaching low will bring a strong low level jet and very tight gradient over the Alaska Peninsula and Bristol Bay area. This has the potential for warning level winds over the northern AK Pen and inland Bristol Bay, so we have issued a high wind watch for those areas. Temperatures all along the west coast will be very warm, so snow will eventually turn over to rain as far north as the Kuskokwim Delta. The precipitation pushing onshore will be mostly rain for the Kodiak area and the southern portion of the Kenai peninsula, but there are some interesting developments further northward. Models have been hanging on to a pocket of cold air over Southcentral for several days now, making precip type particularly challenging in this area. 12z run of the GFS and EC indicate that the surface low will be further westward, which would keep that cold air in place and possibly bring snow to the Kenai Peninsula and northward over the weekend. However, the 18z run of the GFS has moved the low eastward again, indicating more of a rain/snow mix. Behind this low is some significant cold air, which brings a chance for snow for all portions of the forecast area before Christmas Day. Either way, the forecast looks to be messy for the weekend before a return to more seasonable weather early next week. && .AFC WATCHES/WARNINGS/ADVISORIES... PUBLIC...Winter Storm Warning 145. High Wind Watch 161. MARINE...Storm Warning 173 175 176 177 179 181. Gale Warning 160 165 170 171 172 174 178 180. && SYNOPSIS AND MODEL DISCUSSION...JA SOUTHCENTRAL ALASKA...SB SOUTHWEST ALASKA/BERING SEA/ALEUTIANS...AD LONG TERM...LF
In the hours before
Local storm report, Dec 19, 10:41 PM AKST, 4 hours 49 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE ANCHORAGE AK
1041 PM AKST TUE DEC 19 2017
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
1230 PM SNOW TALKEETNA 62.34N 150.09W
12/19/2017 M9.0 INCH AK PUBLIC
NEAR THE CHULITNA RIVER
0127 PM SNOW KENAI 60.55N 151.21W
12/19/2017 M1.7 INCH AK NWS EMPLOYEE
0430 PM SNOW 14 ESE SKWENTNA 61.94N 150.99W
12/19/2017 M5.5 INCH AK PUBLIC
0612 PM SNOW BIG LAKE 61.52N 149.95W
12/19/2017 M6.2 INCH AK NWS EMPLOYEE
STORM TOTAL SNOWFALL
0612 PM SNOW 6 ESE MULDOON 61.18N 149.59W
12/19/2017 M2.5 INCH AK PUBLIC
1.5 HR SNOWFALL TOTAL
0700 PM SNOW NE ANCHORAGE 61.22N 149.87W
12/19/2017 M3.0 INCH AK NWS EMPLOYEE
4-7PM SNOWFALL TOTAL
0725 PM SNOW SUTTON 61.72N 148.88W
12/19/2017 M7.0 INCH AK TRAINED SPOTTER
AT THE TIME OF THE OBSERVATION IT WAS STILL SNOWING.
0747 PM SNOW 2 N RABBIT CREEK 61.11N 149.83W
12/19/2017 M2.0 INCH AK NWS EMPLOYEE
STORM TOTAL
0747 PM SNOW 1 ESE EAGLE RIVER 61.32N 149.55W
12/19/2017 M3.5 INCH AK NWS EMPLOYEE
STORM TOTAL OVER 4 HOURS
0800 PM SNOW 1 NW GLEN ALPS 61.11N 149.71W
12/19/2017 M3.0 INCH AK TRAINED SPOTTER
SOUTHERLY BREEZE WITH SOME PATCHY FOG OBSERVED
0854 PM SNOW 8 SW THOMPSON PASS 61.06N 145.91W
12/19/2017 M7.0 INCH AK TRAINED SPOTTER
SNOWFALL BETWEEN 4-7PM
0854 PM SNOW VALDEZ 61.08N 146.30W
12/19/2017 M13.8 INCH AK TRAINED SPOTTER
FALLING AT A RATE OF 1.6IN PER HR
0920 PM SNOW 2 SE EAGLE RIVER 61.30N 149.52W
12/19/2017 M3.0 INCH AK NWS EMPLOYEE
STORM TOTAL
1012 PM SNOW 1 E RABBIT CREEK 61.08N 149.78W
12/19/2017 M1.0 INCH AK PUBLIC
STORM TOTAL
&&
RAThe office that day
Everything else NWS Anchorage, AK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Dec 19, 3:32 PM AKST | Gale Warning | AFC | 60 hr | |
| Dec 19, 3:38 PM AKST | High Wind Watch | AFC | 37 hr | |
| Dec 20, 3:30 AM AKST | Storm Warning | AFC | 48 hr | |
| Dec 20, 3:40 AM AKST | Gale Warning | AFC | 72 hr | |
| Dec 20, 3:40 AM AKST | Storm Warning | AFC | 48 hr | |
| Dec 20, 3:53 AM AKST | Storm Warning | AFC | 3 days | |
| Dec 20, 2:52 PM AKST | Gale Warning | AFC | 61 hr | |
| Dec 20, 2:52 PM AKST | Small Craft Advisory | AFC | 61 hr | |
| Dec 20, 2:52 PM AKST | Storm Warning | AFC | 61 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.