Small Craft Advisory 20, NWS Fairbanks, AK

100 
FZAK51 PAFG 161107
CWFNSB

COASTAL WATERS FORECAST FOR ARCTIC ALASKA
NATIONAL WEATHER SERVICE FAIRBANKS AK
307 AM AKDT MON JUL 16 2012

ARCTIC 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.

PKZ298-170215-
307 AM AKDT MON JUL 16 2012

.SYNOPSIS FOR ARCTIC COAST...
WEAK HIGH PRESSURE OVER THE ARCTIC SLOPE OF ALASKA WILL 
DRIFT EAST OVER THE BEAUFORT SEA MON. A WEATHER FRONT IN THE
WESTERN CHUKCHI SEA WILL MOVE EAST ACROSS THE NORTH SLOPE OF
ALASKA MON AND INTO THE EASTERN BEAUFORT SEA MON NIGHT. 
A LOW PRESSURE SYSTEM WILL MOVE FROM SIBERIA TO NEAR CAPE LISBURNE
LATE TUE.

$$

PKZ225-170215-
CAPE THOMPSON TO CAPE BEAUFORT-
307 AM AKDT MON JUL 16 2012

.TODAY...W WINDS 20 KT. SEAS 5 FT. FOG.
.TONIGHT...SW WINDS 20 KT. SEAS 4 FT. RAIN.
.TUE...SW WINDS 20 KT. SEAS 4 FT. RAIN.
.TUE NIGHT...E WINDS 20 KT. SEAS 5 FT. RAIN.
.WED...N WINDS 20 KT. SEAS 5 FT. 
.WED NIGHT...W WINDS 15 KT. SEAS 3 FT. 
.THU...SW WINDS 30 KT. SEAS 5 FT. 
.FRI...N WINDS 15 KT. SEAS 5 FT.  

$$

PKZ230-170215-
CAPE BEAUFORT TO POINT FRANKLIN-
307 AM AKDT MON JUL 16 2012

.TODAY...SW WINDS 20 KT. SEAS 5 FT. FOG.
.TONIGHT...W WINDS 20 KT. SEAS 4 FT. 
.TUE...W WINDS 15 KT. SEAS 3 FT. 
.TUE NIGHT...W WINDS 15 KT. SEAS 4 FT. 
.WED...NW WINDS 15 KT. SEAS 3 FT. 
.WED NIGHT...W WINDS 15 KT. SEAS 3 FT. 
.THU...SW WINDS 30 KT. SEAS 5 FT. 
.FRI...W WINDS 15 KT. SEAS 4 FT.  

$$

PKZ235-170215-
POINT FRANKLIN TO CAPE HALKETT-
307 AM AKDT MON JUL 16 2012

.TODAY...SW WINDS 15 KT. FOG.
.TONIGHT...W WINDS 20 KT. 
.TUE...W WINDS 15 KT. 
.TUE NIGHT...W WINDS 10 KT. 
.WED...N WINDS 10 KT. 
.WED NIGHT...W WINDS 15 KT. 
.THU...SW WINDS 25 KT. 
.FRI...W WINDS 20 KT.  

$$

PKZ240-170215-
CAPE HALKETT TO FLAXMAN ISLAND-
307 AM AKDT MON JUL 16 2012

.TODAY...S WINDS 15 KT. FOG.
.TONIGHT...W WINDS 20 KT. 
.TUE...W WINDS 15 KT. 
.TUE NIGHT...W WINDS 15 KT. 
.WED...SW WINDS 10 KT. 
.WED NIGHT...NW WINDS 15 KT. 
.THU...S WINDS 20 KT. 
.FRI...W WINDS 20 KT.  

$$

PKZ245-170215-
FLAXMAN ISLAND TO DEMARCATION POINT-
307 AM AKDT MON JUL 16 2012

.TODAY...SE WINDS 15 KT BECOMING SW. FOG.
.TONIGHT...W WINDS 15 KT. 
.TUE...W WINDS 15 KT. 
.TUE NIGHT...W WINDS 15 KT. 
.WED...SW WINDS 10 KT. 
.WED NIGHT...NW WINDS 15 KT. 
.THU...NW WINDS 15 KT. 
.FRI...S WINDS 20 KT.  

$$

JK JUL 12

NORTHERN ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FAIRBANKS AK
110 AM AKDT SUN JUL 15 2012

.DISCUSSION...

SHORT WAVE TROUGH IS NOW MOVING NORTHEASTWARD ACROSS THE EASTERN
ALASKA RANGE AND SOUTHEAST INTERIOR...PRODUCING A SHORT BURST OF
RAIN AT NORTHWAY AND A COUPLE OF LATE EVENING LIGHTNING STRIKES
ALONG THE DENALI HIGHWAY. THIS SHORT WAVE WILL EXIT NORTHEASTWARD
INTO THE YUKON TERRITORY LATER THIS MORNING. TWO MORE WEAK RIPPLES
WILL SHOOT NORTHEASTWARD ACROSS THE SAME AREA THIS EVENING AND LATE
TONIGHT/EARLY MONDAY MORNING. UPPER LOW CENTER WEST OF DALL POINT
WILL REMAIN NEARLY STATIONARY THROUGH THIS EVENING THEN DRIFT
SLOWLY SOUTHWEST. UPPER RIDGING WILL GRADUALLY BUILD OVER THE
SOUTHERN HALF OF THE FORECAST AREA THROUGH TUESDAY. SOME WARMING
LIKELY IN THE EASTERN INTERIOR WEDNESDAY AS THE RIDGE SHIFTS
EASTWARD SETTING UP A SOUTHWEST FLOW WITH ABOVE NORMAL HEIGHTS
AND 850 MB TEMPERATURES OVER THE EASTERN INTERIOR.

MODERATE TO STRONG WESTERLY FLOW ALOFT WILL SPREAD EASTWARD
ACROSS THE ARCTIC COAST AND BROOKS RANGE SUNDAY NIGHT AND MONDAY...
ASSOCIATED WITH A STRONG POLAR VORTEX MOVING EASTWARD ACROSS
THE HIGH ARCTIC. A SHORT WAVE TROUGH AND ASSOCIATED SURFACE
FRONT WILL SWEEP EASTWARD ACROSS THE ARCTIC SLOPE AND BROOKS
RANGE SUN NIGHT AND MONDAY...PRODUCING A CHANCE OF RAIN AND
BRISK WEST WINDS. WINDY CONDITIONS CAN ALSO BE EXPECTED
OVER MUCH OF THE INTERIOR AND NORTHERN WEST COAST SUNDAY NIGHT
AND MONDAY AS HIGH PRESSURE BUILDS OVER SOUTHWEST ALASKA.
SOUTHERLY GAP WIND GUSTS TO 20-30 MPH IN ALASKA RANGE PASSES
TODAY...DIMINISHING TONIGHT.

COASTAL HAZARD POTENTIAL DAYS 3 AND 4...NONE

&&

.FIRE WEATHER...
NO RED FLAG CONDITIONS EXPECTED. SOUTHERLY GAP WINDS 20-30
MPH IN ALASKA RANGE PASSES TODAY DIMINISHING TONIGHT...BUT
RH EXPECTED TO STAY ABOVE 30 PERCENT.

&&

.HYDROLOGY...
NO PROBLEM AREAS.

&&

.AFG WATCHES/WARNINGS/ADVISORIES...
SMALL CRAFT ADVISORY FOR PKZ225-PKZ230.
&&

RF JUL 12