079
FNAK72 PAFC 181425
FWSALU

Spot Forecast for Adak Tarballs...NOAA
National Weather Service ANCHORAGE AK
625 AM AKDT Tue Aug 18 2026

Forecast is based on forecast start time of 0700 AKDT on August 18.
.DISCUSSION...

A slight chance of showers and winds gusting up to 25 kt are
expected through early this morning as a low departs the area to
the east. Low ceilings of 500 to 1000 ft are expected through
Wednesday morning with periods of fog lowering visibilities to as
low as 2 to 4 SM at times during the overnight and early morning
hours through Wednesday. Winds out of the northwest diminish
overnight tonight and become light by early Wednesday morning as
high pressure moves over the area. Sweeper Cove will remain
protected from marine swells in the northwesterly flow. High
pressure shifting farther east Wednesday night into Thursday
morning will provide favorable conditions for fog and visibilities
potentially dropping to 1 SM or less.

Please note: Both the Adak and Atka AWOS wx stations went down
overnight, so the visibility forecast represents our best estimates.

.TODAY...
TIME (AKDT)      7 AM      10 AM     1 PM      4 PM
Sky (%).........88        85        77        69
Weather cov.....S CHC     S CHC
Weather type....RAIN      RAIN      NONE      NONE
Chc of pcpn (%).20        20        10        10
Temp............47        49        52        53
SFC wind (kts)..NW 16G22  NW 16     NW 14     NW 14
Wave height (ft)1         1         1         1
SST (C).........8
Ceiling (kft)...500 ft    500 ft    500 ft    500 ft
Visibility (sm).2-4       3-4       6-7       6-7

.TONIGHT...
TIME (AKDT)      6 PM      9 PM      MIDNGT    3 AM
Sky (%).........69        68        73        78
Weather cov.....
Weather type....NONE      NONE      NONE      NONE
Chc of pcpn (%).10        0         0         10
Temp............53        50        48        47
SFC wind (kts)..NW 14     NW 13     NW 10G11  W 7
Wave height (ft)1         1         1         1
SST (C).........8
Ceiling (kft)...1000 ft   1000 ft   1000 ft   700 ft
Visibility (sm).6-7       6-7       5-7       3-5

.WEDNESDAY...
TIME (AKDT)      6 AM      9 AM      NOON      3 PM
Sky (%).........76        74        73        66
Weather cov.....                    PATCHY    PATCHY
Weather type....NONE      NONE      FOG       FOG
Chc of pcpn (%).10        0         0         0
Temp............47        47        50        52
SFC wind (kts)..W 6G7     NW 7G8    NW 7G8    NW 5
Wave height (ft)1         1         1         1
SST (C).........8
Ceiling (kft)...500 ft    500 ft    700 ft    1500 ft
Visibility (sm).2-4       5-7       5-7       5-7

$$
Forecaster...Hildebranski
Requested by...Liza Sanden
Type of request...HAZMAT
.TAG 2619702.3/ALU
.DELDT 08/18/26
.FormatterVersion 2.0.0
.EMAIL roy.d.thomas@uscg.mil,AnnMarie.Borkowski@uscg.mil,Christopher.P.Ellner@uscg.mil,Liza.sanden@noaa.gov