Suppression Forecast
Issued by NWS Juneau, AK

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FNAK77 PAJK 210320
FWSAJK

Spot Forecast for Warren Island SAR...Coast Guard
National Weather Service Juneau AK
720 PM AKDT Tue May 20 2025

Forecast is based on forecast start time of 1900 AKDT on May 20.
If conditions become unrepresentative...contact the National Weather
Service.

Please contact our office at (907) 790-6824, if you have questions
or concerns with this forecast.

.DISCUSSION...Westerly onshore flow dominates the weather in the
search area with some showers farther inland over Prince of Wales
Island and Baranof Island. The westerly winds around Cape Decision
and Warren Island are being locally enhanced to 23 mph by a tip jet
coming off of southern Baranof Island at the moment as seen at the
Cape Decision observation. Those winds are expected to diminish to
10 mph by midnight as winds start to become more southwesterly late
and then becoming Southerly by noon Wednesday. Seas are rather low
in the area. Combined seas currently are around 4 ft with a 3 to
4 ft swell at 11 sec coming in from the SW. Those seas are expected
to subside through the night.

Aviation weather in the area is mostly VFR ceilings and vis, with
some isolated areas of MVFR ceilings down to 2500 ft especially at
Sitka and over eastern Baranof Island. More widespread MVFR ceilings
down to 2000 ft possible overnight after 11pm as a lower level cloud
deck develops.

PASI Taf:
PASI 210315Z 2103/2124 29007KT P6SM FEW025 BKN060
      TEMPO 2103/2106 BKN025 OVC035
     FM211000 VRB03KT P6SM -SHRA BKN020 OVC040
     FM212000 26008KT P6SM SCT040=

PAKW Taf:
PAKW 202324Z 2100/2124 21005KT P6SM -SHRA SCT020 OVC035
     FM210500 20002KT P6SM OVC050 PROB30 2106/2110 6SM -SHRA BKN020 OVC035
     FM211800 21005KT P6SM SCT040
     AMD LTD TO CLD VIS AND WIND=

.REST OF TONIGHT...

Sky/weather.........Mostly cloudy (70-80 percent). Sprinkles.
Chance of pcpn......10 percent.
Min temperature.....Around 42.
Max humidity........91 percent.
Dewpoint............40.
Surface winds (mph).West winds 12 to 18 mph with gusts to around 29
                    mph.
Swell height........Southwest swell 3 feet.
Wave height.........4 feet subsiding to 2 feet after 3 am.
Sea surface temp....48 Degrees Fahrenheit.

TIME (AKDT)      7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........73  73  73  75  75  75  76  76  76  79  79
Weather cov.....DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF
Weather type....RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........
Chc of pcpn (%).10  10  10  10  10  10  10  10  10  10  10
Temp............46  45  45  44  43  44  43  43  43  43  43
Dewpoint........42  41  41  41  41  41  40  40  40  39  40
RH..............87  88  86  87  89  89  89  91  89  88  89
Surface wnd dir.W   W   W   W   W   W   W   W   W   W   W
Surface wnd spd.18  18  18  12  12  12  12  12  12  12  12
Surface wnd gst.29  29  29  20  20  20  20  20  20  20  20
Swell direction.SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW
Swell hgt (ft)..3   3   3   2   1   1   1   1   1   1   1
Wave height (ft)5   4   4   4   4   3   3   3   3   2   2
SST (F).........48  48  48  48  48  48  48  48  48  48  48

.WEDNESDAY...

Sky/weather.........Partly sunny (65-75 percent) then becoming
                    sunny (20-30 percent). Sprinkles.
Chance of pcpn......10 percent.
Max temperature.....Around 48.
Min humidity........78 percent.
Dewpoint............40.
Surface winds (mph).Southwest winds 8 to 12 mph.
Swell height........Southwest swell 1 feet.
Wave height.........2 feet.
Sea surface temp....48 Degrees Fahrenheit.

TIME (AKDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........79  56  56  56  58  58  58  15  15  15  32  32
Weather cov.....DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF DEF
Weather type....RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........
Chc of pcpn (%).10  10  10  10  10  10  10  10  10  10  0   0
Temp............43  43  43  44  44  45  46  46  46  47  46  46
Dewpoint........39  40  39  39  39  40  40  40  40  41  40  40
RH..............88  89  86  84  84  83  82  80  80  80  81  81
Surface wnd dir.W   SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW
Surface wnd spd.12  8   8   8   8   8   8   9   9   9   9   9
Surface wnd gst.20  15  15  15  15  15  15  17  17  17  17  17
Swell direction.SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW  SW
Swell hgt (ft)..1   1   1   1   1   1   1   1   1   1   1   1
Wave height (ft)2   2   2   2   2   2   2   2   2   2   2   2
SST (F).........48  48  48  48  48  48  48  48  48  48  48  48

$$
Forecaster...Liske
Requested by...Sector SE USCG
Type of request...SAR
.TAG 2514390.0/AJK
.DELDT 05/20/25
.FormatterVersion 2.0.0
.EMAIL sccSoutheastAlaska@uscg.mil