Frost Advisory 1, NWS Fairbanks, AK

623 
WWAK73 PAFG 060652
NPWAFG

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE FAIRBANKS AK
1052 PM AKDT FRI AUG 5 2011

AKZ222-061500-
/X.CON.PAFG.FR.Y.0001.110806T0800Z-110806T1500Z/
MIDDLE TANANA VALLEY-
INCLUDING...FAIRBANKS...FORT WAINWRIGHT...EIELSON AFB...ESTER...
NORTH POLE...MOOSE CREEK...TWO RIVERS...FOX...CHATANIKA...
CHENA HOT SPRINGS...SOURDOUGH CAMP
1052 PM AKDT FRI AUG 5 2011

...FROST ADVISORY REMAINS IN EFFECT UNTIL 7 AM AKDT SATURDAY...

* TEMPERATURE...EXPECTED TO FALL TO AROUND 30 IN LOW LYING AREAS 
  EARLY SATURDAY MORNING. 

* IMPACTS...THIS WILL BE THE FIRST FROST OF THE SEASON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

LIGHT FROST IS EXPECTED IN A FEW LOW LYING AREAS OUTSIDE OF THE
FAIRBANKS METRO AREA. WHERE IT DOES DEVELOP...THE FROST IS
EXPECTED TO LAST ONLY AN HOUR OR TWO.

A FROST ADVISORY MEANS THAT FROST IS EXPECTED. SENSITIVE OUTDOOR
PLANTS MAY BE DAMAGED BY COLD TEMPERATURES.

&&

$$

715 
WWAK73 PAFG 061442
NPWAFG

URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE FAIRBANKS AK
642 AM AKDT SAT AUG 6 2011

AKZ222-061545-
/X.EXP.PAFG.FR.Y.0001.000000T0000Z-110806T1500Z/
MIDDLE TANANA VALLEY-
INCLUDING...FAIRBANKS...FORT WAINWRIGHT...EIELSON AFB...ESTER...
NORTH POLE...MOOSE CREEK...TWO RIVERS...FOX...CHATANIKA...
CHENA HOT SPRINGS...SOURDOUGH CAMP
642 AM AKDT SAT AUG 6 2011

...FROST ADVISORY WILL EXPIRE AT 7 AM AKDT THIS MORNING...

LIGHT FROST WAS OBSERVED AT A FEW LOCATIONS IN THE MIDDLE TANANA
VALLEY JUST BEFORE SUNRISE. THE FAIRBANKS METRO AREA DID NOT HAVE
ANY FROST. SOME OUTLYING VALLEY LOCATIONS DID. AT
LIVENGOOD...WHICH IS AT THE SOUTH END OF THE DALTON HIGHWAY...THE
TEMPERATURE DROPPED TO 28 DEGREES AT 5 AM. TEMPERATURES THROUGHOUT
THE MIDDLE TANANA VALLEY ARE NOW RISING.

$$

NORTHERN ALASKA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE FAIRBANKS AK
249 PM AKDT FRI AUG 5 2011

.DISCUSSION...
THE COLD FRONT THAT LAY FROM ABOUT DEADHORSE TO FORT YUKON TO
DELTA AT 10 AM IS EXPECTED TO MOVE EAST OVER THE CANADIAN BORDER
TONIGHT...LEAVING A RATHER MESSY REGIME BEHIND IT. EXPECT COOLER
TEMPERATURES OVERALL IN THE INTERIOR TONIGHT...BUT THERE WILL BE
A (LAST?) TASTE OF SUMMER OVER THE SOUTHEAST INTERIOR AT LEAST ON
SATURDAY. A SHORT WAVE ASSOCIATED WITH THE 997 MB SURFACE LOW OFF
CAPE NAVARIN AT 10 AM WILL BE MOVING EAST OVERNIGHT....TURNING
WINDS ALOFT OVER MAINLAND ALASKA BACK TO THE SOUTH...WITH A
MODEST CHINOOK EFFECT OVER THE SOUTHEAST INTERIOR. RAIN AND
COOLER TEMPERATURES OVER THE INTERIOR ON SUNDAY AS THE SHORT
WAVE MOVES IN. IT LOOKS LIKE THE COOLER TEMPERATURES WILL STAY
WITH US FOR A WHILE AS THE MAIN LOW ALOFT BECOMES CENTERED
OVER MAINLAND ALASKA. FAIRLY DAMP AS WELL...THOUGH HEAVY
PRECIPITATION IS NOT LIKELY.

THE OLD LOW ASSOCIATED WITH OUR COLD FRONT IS NOW OVER THE
SOUTHERN CHUKCHI SEA. IT WILL MOVE NORTH TONIGHT AND A FAIRLY
STRONG PRESSURE GRADIENT WILL DEVELOP OVER EXTREME NORTHWEST
ALASKA AS SURFACE RIDGING BUILDS AHEAD OF THE INCOMING SHORT
WAVE. THE ASSOCIATED WINDS WILL DIMINISH ON SATURDAY AS THE
LOW MOVES OUT OF THE PICTURE. EXPECT ANOTHER SHOT OF RAIN TO
MOVE INTO THE WEST COAST ZONES FROM 211 SOUTH TONIGHT...THEN
SPREAD NORTH AND EAST AND TO AFFECT NORTHWEST ALASKA AND THE
WESTERN INTERIOR ON SATURDAY.

A SECOND AND MUCH WEAKER SHORT WAVE LIES FROM ABOUT AMBLER
TO MINCHUMINA. THIS FEATURE IS NOW EXPECTED TO MOVE NORTHEAST
AND WEAKEN AS THE RIDGE MENTIONED ABOVE BUILDS. IN PARTICULAR
WE EXPECT LITTLE OR NO PRECIPITATION FROM IT IN ZONES 222 AND
223 THIS AFTERNOON OR EVENING. CLOUD COVER IN THOSE ZONES WILL
LIKELY BREAK OUT OR MAYBE SCATTER OUT...WHICH HAS LEAD US TO
ISSUE A FROST ADVISORY FOR ZONE 222.

WINDS SURFACE AND ALOFT OVER THE ARCTIC COAST ARE EXPECTED TO
BE MAINLY OFFSHORE TONIGHT THROUGH SATURDAY NIGHT...WHICH IS
EXPECTED TO DIMINISH THE FOG PROBLEM. PROBABLY STILL A BIT OF
RADIATIONAL FOG DIURNALLY.

COASTAL HAZARD POTENTIAL DAYS 3 AND 4...NONE

&&

.FIRE WEATHER...
NO ISSUES.

&&

.HYDROLOGY...
NO ISSUES.

&&

.AFG WATCHES/WARNINGS/ADVISORIES...
FROST ADVISORY FOR AKZ222.

SMALL CRAFT ADVISORY FOR PKZ200-PKZ210-PKZ225.
&&

DJH AUG 11