Small Craft Advisory 157, NWS Fairbanks, AK

NORTHERN ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FAIRBANKS AK
201 PM AST WED NOV 7 2007

.DISCUSSION...THE PERSISTENT LONG WAVE TROUGH OVER THE BERING SEA
WILL CONTINUE TO SPIN PULSES OF ENERGY NORTHWARD INTO MAINLAND
ALASKA INTO THE WEEKEND. HIGH PRESSURE RIDGING OVER WESTERN CANADA
WILL KEEP MOST OF THE REALLY ACTIVE WEATHER CONFINED TO THE
WESTERN HALF OF THE STATE FOR THE NEXT FEW DAYS. THIS GENERAL
SOUTHERLY FLOW PATTERN WILL KEEP TEMPERATURES ABOVE NORMAL FOR THE
FORESEEABLE FUTURE ACROSS MUCH OF NORTHERN ALASKA. MOST OF THE
EASTERN INTERIOR WILL BE IN THE SHADOW OF THE ALASKA RANGE AND
VERY LITTLE IF ANY SNOW IS EXPECTED.

A DYING WEATHER FRONT STRETCHED ACROSS THE NORTHERN HALF OF THE
STATE WILL TRIGGER SOME SNOW SHOWERS FROM KOTZEBUE SOUND AND AREAS
SOUTH OF THE BROOKS RANGE OVERNIGHT. LOW PRESSURE NEAR BETHEL
WILL MOVE NORTHWEST TO SAINT LAWRENCE ISLAND BY THURSDAY. THIS
WILL PUSH ANOTHER SLUG OF MOISTURE NORTH TONIGHT AND RESULT IN AN
INCH OR TWO OF SNOW OVER THE WESTERN INTERIOR. THE STRONG
NORTHEASTERLY GRADIENT THROUGH THE NORTHERN BERING SEA WILL
SLACKEN THIS EVENING AS THIS LOW APPROACHES AND BRING AN END TO
THE HEAVY SURF ON SAINT LAWRENCE ISLAND. A STRONGER LOW MOVING
INTO BRISTOL BAY THU WILL BRING ANOTHER ROUND OF GALE FORCE WINDS TO
THE ENTIRE WEST COAST AND MORE HIGH SURF TO SAINT LAWRENCE ISLAND.
THE SYSTEM WILL ALSO BRING MORE SNOW TO THE WEST.

ADVISORY LEVEL WINDS IN THE ALASKA RANGE WILL DIMINISH THIS
EVENING. AS THE SECOND LOW MOVES INTO BRISTOL BAY THU WINDS WILL
LIKELY INCREASE TO WARNING LEVELS THU NIGHT AND FRI WITH WINDS
GUSTING TO 70 MPH THROUGH PASSES.

IN THE ARCTIC...A WEAK LOW NEAR PRUDHOE BAY HAS BROUGHT
SOUTHWESTERLY WINDS TO THE THE EASTERN ARCTIC COAST WHICH WILL
CONTINUE TONIGHT. OTHERWISE EASTERLY WINDS AND FLURRIES WILL
PERSIST THE NEXT FEW DAYS.

COASTAL HAZARD POTENTIAL DAYS 3 AND 4...
HEAVY SURF NORTH SIDE OF SAINT LAWRENCE MAY REDEVELOP LATE THU
NIGHT AND CONTINUE INTO FRI AS NORTHEAST WINDS AGAIN INCREASE TO GALE
FORCE.

&&

.AFG WATCHES/WARNINGS/ADVISORIES...
WIND ADVISORY FOR AKZ225-AKZ226.

HIGH SURF WARNING FOR AKZ213.

HEAVY FREEZING SPRAY WARNING FOR PKZ210-PKZ215-PKZ220-PKZ225-
PKZ230-PKZ235.

SMALL CRAFT ADVISORY FOR PKZ210-PKZ215-PKZ220-PKZ225-PKZ230.

GALE WARNING FOR PKZ210-PKZ225.
&&

NOV 07