Brisk Wind Advisory 103, NWS Fairbanks, AK

NORTHERN ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FAIRBANKS AK
154 PM ADT MON APR 23 2007

.SYNOPSIS...
LONG WAVE PATTERN CONSISTING OF A TROUGH OVER THE BERING AND A
RIDGE OVER WESTERN CANADA WILL PROGRESS EAST SO THAT THE TROUGH
MOVES OVER MAINLAND ALASKA BY THE WEEKEND. THIS WILL CAUSE A
COOLING TREND THROUGH THE WEEKEND WITH SHOWERS COVERAGE AND
CLOUDS INCREASING THROUGH THE WEEKEND AS WELL AS THE UPPER PATTERN
BECOME MORE CYCLONIC.

AN ARCTIC FRONT FROM BARTER ISLAND TO THE BERING STRAIT WILL MOVE
TO LIE OVER THE NORTH SLOPE OF ALASKA TUE AND THEN REMAIN
STATIONARY. HIGH PRESSURE NORTH OF THE ARCTIC COAST WILL BUILD
THROUGH WED. FOG AND FLURRIES WILL PERSIST NORTH OF THIS FRONT.
EAST WINDS 15-25KT WILL DEVELOP NORTH OF THIS FRONT TONIGHT AND
PERSIST INTO WED AS WELL.

A THERMAL TROUGH FROM ANVIK TO EAGLE WILL DRIFT NORTH THROUGH TUE.WINDS
10G20KT CONVERGING ON THIS TROUGH THIS EVENING ALONG WITH A FEW
CUMULUS CLOUDS. THIS IS CAUSING GUSTS TO 25 KT ALONG THE ALASKA
RANGE THROUGH THIS EVENING.

A WEAKENING OCCLUDED FRONT SOUTH OF THE ALASKA RANGE WILL MOVE TO
MCGRATH TO NORTHWAY BY 4AM TUE...TO ANVIK TO FAIRBANKS TO EAGLE BY
4PM TUE...TO ST MARYS TO FORT YUKON BY 4AM WED AND THEN DISSIPATING.
THIS WILL BRING A SLIGHT INCREASE IN MOISTURE AND INSTABILITY TO
CAUSE ISOLATED SHOWERS TO DEVELOP WITH THE FRONT.

A WEAK CHINOOK DEVELOPING FOLLOWING THE FRONT WILL CAUSE SOUTH
WINDS 15 KT ALONG THE ALASKA RANGE TO INCREASE TO 25-30KT BY TUE
NIGHT. THIS WILL CAUSE DRYING FOLLOWING THE FRONT AND MAY LEAD TO
MORE FIRE WEATHER ISSUES DUE TO THE WINDS AND DRY CONDITIONS.

&&

.AFG WATCHES/WARNINGS/ADVISORIES...
RED FLAG WARNING FOR AKZ223-AKZ223-AKZ225-AKZ225.

BRISK WIND ADVISORY FOR PKZ210-PKZ220-PKZ225-PKZ230.
&&

JB APR 07