Small Craft Advisory 155, NWS Fairbanks, AK

NORTHERN ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FAIRBANKS AK
1237 PM AST TUE NOV 6 2007

.DISCUSSION...

MODERATE SOUTH TO SOUTHWEST FLOW ALOFT WILL SET UP OVER THE
INTERIOR TONIGHT AS UPPER RIDGING BUILDS NORTHWARD OUT OF THE
GULF OF ALASKA. A CHINOOK FLOW PATTERN WILL CONTINUE INTO FRI AS
SEVERAL SHORT RIDGE RIDGES TRANSIT NORTHEASTWARD. WIND ADVISORIES
WILL BE POSTED FOR THE ALASKA RANGE ZONES. MAXIMUM GUSTS COULD
APPROACH WARNING LEVELS THU AND FRI AS WINDS ALOFT FROM
700-800 MB MAX OUT AT 50-60 KT.

MULTIPLE SURFACE LOW CENTERS WILL CONTINUE TO ROTATE CYCLONICALLY
OVER OVER THE SOUTHERN BERING...EASTERN ALEUTIANS AND THE ALASKA
PENINSULA INTO WED. WHILE DIFFERING ON POSITION...ALL MODELS
INDICATING DEVELOPMENT OF A MAJOR LOW...MEAN POSITION OVER OUTER
BRISTOL BAY...BY 00Z FRI. THE EXPANDING CIRCULATION WITH THIS
LOW WILL DOMINATE THE NORTHERN BERING BY 00Z FRI.

EXTENDED PERIOD OF NORTH-NORTHEAST WINDS 33-45 KT OVER SAINT
LAWRENCE ISLAND AND THE BERING STRAIGHT...TONIGHT INTO FRIDAY...
IS EXPECTED...GENERATING SEAS TO 12 FT. THE DURATION AND HEIGHT
OF THE WAVES WILL RESULT IN SIGNIFICANT BEACH EROSION ALONG THE
NORTH SHORE OF SAINT LAWRENCE ISLAND. HIGH SURF WARNING WILL
REMAIN IN EFFECT FOR SAINT LAWRENCE ISLAND.

COASTAL HAZARD POTENTIAL DAYS 3 AND 4...NONE

&&

.AFG WATCHES/WARNINGS/ADVISORIES...
HIGH SURF WARNING FOR AKZ213.

HEAVY FREEZING SPRAY WARNING FOR PKZ200-PKZ210-PKZ220-PKZ225-
PKZ230-PKZ235.

SMALL CRAFT ADVISORY FOR PKZ200-PKZ220-PKZ225-PKZ230.

BRISK WIND ADVISORY FOR PKZ240-PKZ245.

GALE WARNING FOR PKZ200-PKZ210.
&&

RF NOV 07