Winter Storm Warning 1, NWS Fairbanks, AK

NORTHERN ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FAIRBANKS AK
348 PM AKST FRI JAN 11 2013

.DISCUSSION...
MODELS ARE IN DECENT AGREEMENT THROUGH 36 HOURS. WEATHER PATTERN IS
VERY BUSY THROUGH THE WEEKEND. UPPER LEVEL RIDGE OVER EASTERN
PORTION OF THE STATE IS BEING CONTAMINATED BY AN UPPER LEVEL
TROUGH WITH ASSOCIATED SURFACE FEATURE. THIS HAS SPREAD SNOWFALL
OVER MUCH OF THE CENTRAL AND WESTERN INTERIOR THU NIGHT AND FRI
DURING THE DAY. THE RIDGE RE-DEFINES ITSELF AGAIN ON SAT BUT
BECOMES THE PRECIPICE FOR THE WEATHER IN THE WESTERN PORTION OF
THE STATE.

THE RIDGE WILL BE RESPONSIBLE FOR PUMPING UP THE VERY WARM AIR
FROM THE SOUTHERN PACIFIC. THIS WILL BEGIN TO INFLUENCE THE
PRECIPITATION TYPE LATER ON SAT FOR MUCH OF THE WESTERN INTERIOR.
ANOTHER STRONG SHORT WAVE WILL DIG INTO THE RIDGE ON SUN AND
PROVIDE ANOTHER BIG SHOT OF MOISTURE. THIS WAVE WILL HAVE
RECIRCULATED COLDER AIR WITH IT SO IT WILL BEGIN TO COOL THE
WESTERN ZONES DOWN BY SUN NIGHT AND MON.

THE CENTRAL INTERIOR MAY BE DOWN SLOPED OUT FOR MUCH OF THIS
EVENT. MUCH OF THE PRECIPITATION IN THE WESTERN INTERIOR WILL
CHANGE OVER TO RAIN ON SAT EVENING AND SUN MORNING WHICH WILL
PROVIDE NUMEROUS AREAS OF FREEZING RAIN.

WIND CHILLS ON PARTS OF THE ARCTIC COAST WILL REMAIN IN THE
ADVISORY CATEGORY THROUGH MUCH OF FRI NIGHT. WINDS WILL INCREASE
ON THE ARCTIC COAST BEGINNING FRI NIGHT AND CONTINUE THROUGH THE
WEEKEND. BLIZZARD CONDITIONS WILL CONTINUE OVER THE BERING STRAIT
AND ST LAWRENCE ISLAND THROUGH THIS EVENING.

BY MON...THE RIDGE GETS FLATTENED OUT AND COLD AIR WILL PUSH SOUTH
TO INFLUENCE ALL OF NORTHERN ALASKA TO SOME DEGREE THROUGH THE
REMAINDER OF THE WEEK.

&&

.AFG WATCHES/WARNINGS/ADVISORIES...
WIND CHILL ADVISORY FOR AKZ201-AKZ203-AKZ204-AKZ205.

WINTER WEATHER ADVISORY FOR AKZ213-AKZ215.

FREEZING RAIN ADVISORY FOR AKZ214-AKZ215-AKZ216-AKZ221-AKZ227.

WINTER STORM WATCH FOR AKZ208-AKZ210-AKZ211-AKZ217.

BRISK WIND ADVISORY FOR PKZ200-PKZ210-PKZ215-PKZ220-PKZ230-
PKZ235-PKZ240-PKZ245.
&&

CF JAN 13