Small Craft Advisory 77, NWS Fairbanks, AK

Issued

Aug 17, 2011, 2:30 PM AKDT (22:30 UTC)

Expired

Aug 18, 2011, 5:30 AM AKDT

In force

15 hr

Issued by

NWS Fairbanks, AK

830 
FZAK52 PAFG 172230
CWFWCZ

COASTAL WATERS FORECAST FOR NORTHWEST ALASKA
NATIONAL WEATHER SERVICE FAIRBANKS AK
230 PM AKDT WED AUG 17 2011

NORTHWESTERN ALASKA COASTAL WATERS OUT 100 NM

WIND FORECASTS REFLECT THE PREDOMINANT SPEED AND DIRECTION
EXPECTED. SEA FORECASTS REPRESENT THE AVERAGE OF THE HIGHEST ONE-
THIRD OF THE COMBINED WIND WAVE AND SWELL HEIGHT.

PKZ299-181330-
230 PM AKDT WED AUG 17 2011

.SYNOPSIS FOR NORTHWEST COAST...
STRONG HIGH PRESSURE OVER THE CHUKCHI SEA WILL WEAKEN THU AND FRI.
A STRONG LOW IN THE WESTERN BERING SEA WILL WEAKEN AND DRIFT WEST
THU. A LOW NEAR SHEMYA WILL MOVE TO THE CENTRAL BERING SEA AND
STRENGTHEN THU AND FRI.

$$

PKZ200-181330-
NORTON SOUND-
230 PM AKDT WED AUG 17 2011

.TONIGHT...NE WINDS 15 KT. SEAS 3 FT. FOG.
.THU...E WINDS 20 KT. SEAS 4 FT. FOG.
.THU NIGHT...E WINDS 25 KT. SEAS 5 FT. 
.FRI...E WINDS 25 KT. SEAS 5 FT. 
.FRI NIGHT...NE WINDS 25 KT. SEAS 5 FT. 
.SAT...NE WINDS 25 KT. SEAS 5 FT. 
.SAT NIGHT...N WINDS 20 KT. SEAS 6 FT. 
.SUN...NW WINDS 20 KT. SEAS 6 FT. 
.MON...NW WINDS 20 KT. SEAS 6 FT.  

$$

PKZ210-181330-
DALL POINT TO WALES-
230 PM AKDT WED AUG 17 2011

...SMALL CRAFT ADVISORY IN EFFECT FROM THURSDAY MORNING THROUGH
THURSDAY AFTERNOON...

.TONIGHT...NE WINDS 20 KT. SEAS 6 FT. FOG.
.THU...E WINDS 25 KT INCREASING TO 30 KT. SEAS BUILDING TO 8 FT. FOG.
.THU NIGHT...E WINDS 30 KT. SEAS 9 FT. 
.FRI...NE WINDS 30 KT. SEAS 10 FT. 
.FRI NIGHT...NE WINDS 30 KT. SEAS 9 FT. 
.SAT...N WINDS 30 KT. SEAS 8 FT. 
.SAT NIGHT...N WINDS 30 KT. SEAS 9 FT. 
.SUN...NW WINDS 25 KT. SEAS 8 FT. 
.MON...W WINDS 20 KT. SEAS 7 FT.  

$$

PKZ215-181330-
KOTZEBUE SOUND-
230 PM AKDT WED AUG 17 2011

.TONIGHT...NE WINDS 10 KT...EXCEPT MAINLY NW WINDS 10 KT SOUTH
OF CAPE ESPENBERG. SEAS 2 FT. FOG.
.THU...NE WINDS 10 KT. SEAS 2 FT. FOG.
.THU NIGHT...NE WINDS 15 KT. SEAS 3 FT.
.FRI...NE WINDS 15 KT. SEAS 3 FT. 
.FRI NIGHT...N WINDS 20 KT. SEAS 4 FT. 
.SAT...N WINDS 15 KT. SEAS 3 FT. 
.SAT NIGHT...N WINDS 20 KT. SEAS 4 FT. 
.SUN...NW WINDS 20 KT. SEAS 5 FT. 
.MON...N WINDS 20 KT. SEAS 6 FT.  

$$

PKZ220-181330-
WALES TO CAPE THOMPSON-
230 PM AKDT WED AUG 17 2011

.TONIGHT...NE WINDS 20 KT. SEAS 6 FT. FOG.
.THU...NE WINDS 20 KT. SEAS 5 FT. FOG.
.THU NIGHT...NE WINDS 20 KT. SEAS 4 FT. 
.FRI...NE WINDS 20 KT. SEAS 4 FT. 
.FRI NIGHT...N WINDS 25 KT. SEAS 5 FT. 
.SAT...N WINDS 25 KT. SEAS 7 FT. 
.SAT NIGHT...N WINDS 25 KT. SEAS 8 FT. 
.SUN...N WINDS 20 KT. SEAS 7 FT. 
.MON...W WINDS 15 KT. SEAS 6 FT.  

$$

RL/DJH AUG 11

NWS Fairbanks, AK wrote its last area forecast discussion before this small craft advisory went out at Aug 17, 2:17 PM AKDT, 13 minutes earlier.

NORTHERN ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FAIRBANKS AK
217 PM AKDT WED AUG 17 2011

.DISCUSSION...
THE MODELS ARE IN PRETTY GOOD AGREEMENT THROUGH FRIDAY MORNING.

AT THE SURFACE...A 984 MB LOW EAST OF KAMCHATKA PENINSULA
WILL DRIFT WEST AS A DEVELOPING LOW IN THE WESTERN ALEUTIAN
ISLANDS DEEPENS TO 994 MB AND MOVES TO JUST NORTHWEST OF SAINT
PAUL ISLAND THURSDAY EVENING. AN ASSOCIATED FRONT WILL MOVE INTO
THE Y-K DELTA THURSDAY NIGHT. A FRONT OVER THE NORTHERN BEAUFORT
SEA WILL MOVE OVER THE EASTERN ARCTIC COAST OF ALASKA TONIGHT AND
PERSIST ALONG THE COAST THROUGH FRI.

INTERIOR...RIDGING AHEAD OF THE APPROACHING ALEUTIAN LOW OVER THE SOUTH
CENTRAL AND EASTERN INTERIOR WILL PROVIDE FOR WEAK CHINOOK FLOW IN
THE CENTRAL AND EASTERN INTERIOR. EXPECT SOUTHERLY GAP FLOWS TO
DEVELOP THROUGH THE ALASKA RANGE PASSES THURSDAY AS A RIDGE OVER
THE SOUTH CENTRAL BUILDS AND THE THERMAL TROUGH ACROSS THE
SOUTHERN INTERIOR INTENSIFIES. ISOLATED TO SCATTERED RAIN SHOWERS
WITH ISOLATED THUNDERSTORMS WILL DEVELOP NEAR THE THERMAL TROUGH
JUST NORTH OF THE ALASKA RANGE THIS AFTERNOON AND WILL DRIFT SLOWLY
NORTH TO A PAMC TO PATA TO PAFA TO PAEG LINE BY THURSDAY AFTERNOON.

NORTH SLOPE...EASTERLY FLOW ALONG THE NORTH SLOPE WILL ALLOW THE LOW CIGS
FOG AND PATCHY DRIZZLE TO CONTINUE ALONG THE NORTH COAST
ESPECIALLY EAST OF BARROW. WINDS WILL REMAIN LIGHT TO MODERATE.

WEST COAST...THE AREAS OF DENSE FOG ALONG THE WEST COAST THAT
PERSISTED THROUGH THE MORNING HOURS WEDNESDAY ARE EXPECTED TO
REMAIN OVER THE WATER THURSDAY MORNING AS THE WIND TURNS TO THE
EAST. RAIN WILL MOVE INTO THE SOUTHWESTERN PORTIONS OF THE CWA
EARLY FRIDAY MORNING...SOUTH OF UNALAKLEET. SCATTERED SHOWERS AND
ISOLATED THUNDERSTORMS ARE POSSIBLE IN ZONES 210-212-215-216 AND
227 THIS EVENING.

ALOFT...A LONG WAVE TROUGH CURRENTLY OVER EASTERN ALASKA WILL
RETROGRADE AND DEEPEN THROUGH THE THURSDAY AND FRIDAY AND WILL BE
CENTERED OVER THE BERING SEA BY THE WEEKEND AS A RIDGE BUILDS OVER
THE YUKON AND BC. A STRONG 500 MB LOW DROPS SOUTH AND SOUTHWESTWARD
OUT OF THE HIGH ARCTIC SUNDAY AND MONDAY.

COASTAL HAZARD POTENTIAL DAYS 3 AND 4...NONE

&&

.FIRE WEATHER...NONE.

&&

.HYDROLOGY...NONE.

&&

.AFG WATCHES/WARNINGS/ADVISORIES...
SMALL CRAFT ADVISORY FOR PKZ210.
&&

RL AUG 11

Small Craft Advisories in Alaska, 2011Every small craft advisory in 2011

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.