Snow Advisory 13, NWS Fairbanks, AK

000 
WWAK43 PAFG 200330
WSWAFG

URGENT - WINTER WEATHER MESSAGE
NATIONAL WEATHER SERVICE FAIRBANKS AK
730 PM ADT FRI OCT 19 2007

AKZ222-201400-
/X.UPG.PAFG.SN.Y.0013.000000T0000Z-071020T0800Z/
/X.NEW.PAFG.HS.W.0007.071020T0330Z-071020T1400Z/
MIDDLE TANANA VALLEY-
INCLUDING...FAIRBANKS...FORT WAINWRIGHT...EIELSON AFB...ESTER...
NORTH POLE...MOOSE CREEK...TWO RIVERS...FOX...CHATANIKA...
CHENA HOT SPRINGS...SOURDOUGH CAMP
730 PM ADT FRI OCT 19 2007

...HEAVY SNOW WARNING IN EFFECT UNTIL 6 AM ADT SATURDAY...

THE NATIONAL WEATHER SERVICE IN FAIRBANKS HAS ISSUED A HEAVY SNOW
WARNING...WHICH IS IN EFFECT UNTIL 6 AM ADT SATURDAY. THE SNOW
ADVISORY IS NO LONGER IN EFFECT. 

SNOWFALL AMOUNTS OF UP TO 6 INCHES HAVE OCCURRED IN THE MIDDLE
TANANA VALLEY TODAY. ADDITIONAL SNOWFALL AMOUNTS OF UP TO 4 INCHES
ARE EXPECTED TONIGHT...WITH STORM TOTALS OF UP TO 10 INCHES.

A HEAVY SNOW WARNING MEANS HAZARDOUS WINTER WEATHER IS EXPECTED.
THE ACCUMULATION OF NEW SNOW WILL MAKE TRAVEL DIFFICULT. 

$$

NORTHERN ALASKA FORECAST DISCUSSION...CORRECTED
NATIONAL WEATHER SERVICE FAIRBANKS AK
227 PM ADT FRI OCT 19 2007

CORRECTED NORTH SLOPE

.DISCUSSION...
ALOFT...LONG WAVE TROUGH OVER ALASKA PERSISTING THROUGH MID-
WEEK. LOW NEAR FORT YUKON DRIFTING WEST TO KOTZEBUE 12Z SUN THEN
STATIONARY UNTIL MONDAY THEN DRIFTING SOUTHWEST. SHORT WAVE TROUGH
MOVING NORTH FROM GULF OF ALASKA TO TANANA TO ANCHORAGE 00Z SUN
THEN DRIFTING NORTH AND FORMING SMALL LOW NEAR BETTLES 06Z MON. LOW
OVER RUSSIAN ARCTIC MOVING SOUTH TO SAINT LAWRENCE ISLAND 12Z MON.

SURFACE...995 MB LOW NEAR FORT YUKON DRIFTING NORTHWEST TO PRUDHOE
BAY 00Z SUN AT 1000 MB. 1000 MB LOW FORMING NEAR KOTZEBUE BY 00Z
SUN MOVING TO BERING STRAIT 00Z MON. 1030 MB HIGH OVER HIGH ARCTIC
NORTHWEST OF BARROW WEAKENING TO 1020 MB 00Z MON. 975 MB LOW
MOVING NORTH TO NORTHEASTERN GULF OF ALASKA.

MODELS...ALL DISAGREE IN MOVEMENT OF NORTH PACIFIC SURFACE LOW
NORTHWARD INTO EASTERN GULF OF ALASKA. OVER NORTHERN ALASKA MODELS
IN FAIRLY GOOD AGREEMENT ALOFT THROUGH SUNDAY...THOUGH THEY
DIVERGE THEREAFTER ON UPPER LOW COMING IN FROM RUSSIAN ARCTIC TO
THE NORTHERN BERING SEA MONDAY.

NORTH SLOPE...WITH SURFACE LOW MOVING NORTH OVER CENTRAL BROOKS
RANGE THROUGH SATURDAY EXPECT UP TO 2 INCHES OF SNOW IN ZONES 205
AND 206...LIGHTER AMOUNTS COASTAL ZONES THROUGH SATURDAY THEN
FLURRIES LINGERING INTO SUNDAY. WINDS DIMINISHING SATURDAY AND
SATURDAY NIGHT AS ARCTIC HIGH WEAKENS AND LOW MOVES NORTH TO
PRUDHOE BAY.

WESTERN ALASKA...WITH UPPER LOW NEAR FORT YUKON DRIFTING
WEST...EXPECT LIGHT SNOW OVER ZONE 217 SPREADING WEST TO OUTER
CHUKCHI SEA COAST AND SOUTHWEST TO NOME BY EARLY SAT. SNOW MOVING
INTO GALENA BY EVENING. SNOW WILL DIMINISH TO SCATTERED AREAS
SATURDAY NIGHT AND SUNDAY. NORTHERLY WINDS OVER OUTER WATERS
DIMINISHING SATURDAY AND SATURDAY NIGHT. AS WEAK SURFACE LOW
MOVES IN AND HIGH TO THE NORTH WEAKENS.

CENTRAL AND EASTERN INTERIOR...LIGHT SNOW OVER ENDING FROM EAST
OVERNIGHT. CHANCE OF SNOW SATURDAY NIGHT AND SUNDAY NORTH OF
ALASKA RANGE ZONES WITH UPPER TROUGH MOVING NORTH...ALONG WITH A
PERIOD SOUTH WINDS THROUGH ALASKA RANGE PASSES SATURDAY NIGHT.

COASTAL HAZARD POTENTIAL DAYS 3 AND 4...NONE

&&

.HYDROLOGY...NONE.

&&

.AFG WATCHES/WARNINGS/ADVISORIES...
HEAVY FREEZING SPRAY WARNING FOR PKZ225-PKZ230-PKZ235.

SMALL CRAFT ADVISORY FOR PKZ220-PKZ225-PKZ230-PKZ235-PKZ240-
PKZ245.

GALE WARNING FOR PKZ210.
&&

JL OCT 07