197  
FXAK69 PAFG 232114  
AFDAFG  
 
NORTHERN ALASKA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE FAIRBANKS AK  
114 PM AKDT SUN APR 23 2017  
   
DISCUSSION
 
 
GENERAL MODEL CONSISTENCY WITH THE UPPER LEVEL FEATURES THROUGH  
THURSDAY WITH THE UPPER LEVEL LOW MOVING EASTWARD ACROSS THE  
ARCTIC WITH FRONTAL FEATURE MOVING NORTHWARD ACROSS INTERIOR  
ALASKA AND EXTENDING TOWARDS YUKON DELTA. A SHORTWAVE ROTATING  
AROUND THE THE UPPER LEVEL LOW NEAR ADAK WILL BRING CLOUDS AND  
PRECIPITATION TO THE YUKON DELTA TONIGHT AS IT SPREADS NORTHWARD  
TOWARD SEWARD PENINSULA BY TUESDAY.  
 
ARCTIC COAST AND BROOKS RANGE: THE MAIN CONCERN FOR THE NORTH  
WILL BE THE DENSE FOG THAT REDEVELOPS THIS EVENING INTO MONDAY  
MORNING. EXPECT QUARTER MILE VISIBILITY ALONG THE ARCTIC COAST  
LINE WITH AREAS OF FOG PUSHING UP AGAINST THE BROOKS RANGE. LIGHT  
ONSHORE FLOW WILL ALSO CONTINUE ACROSS THE CHUKCHI COAST FROM  
POINT LAY UP THROUGH BARROW WITH QUARTER MILE VISIBILITY DUE TO  
THE FOG AS WELL. HOWEVER, FOG SHOULD DISSIPATE THROUGH THE LATE  
MORNING. THERE IS A A LOW PRESSURE TROUGH IN EASTERN CHUKCHI SEA  
THAT WILL MOVE ACROSS THE CHUKCHI SEA COAST TONIGHT AND SPREAD  
ACROSS THE EASTERN NORTH SLOPE AREA BEFORE DISSIPATING. STRATUS  
ALONG AND WEST OF THIS TROUGH WILL SPREAD EAST ACROSS THE NORTH  
SLOPE TONIGHT INTO MONDAY.  
 
WEST COAST AND WESTERN INTERIOR: A FRONTAL BOUNDARY WILL BRING  
ISOLATED TO SCATTERED RAIN AND SNOW SHOWERS TONIGHT INTO MONDAY  
ACROSS THE YUKON DELTA AND LOWER YUKON VALLEY. BY TUESDAY THE  
FRONTAL BOUNDARY WILL MOVE NORTHWARD WITH SCATTERED RAIN AND SNOW  
SHOWERS ALONG AND SOUTH OF SEWARD PENINSULA AS SHOWERS ALSO PUSH  
INTO THE WESTERN INTERIOR. ANY PRECIPITATION ACCUMULATION WILL BE  
RELATIVELY LIGHT. IT LOOKS LIKE IT WILL REMAIN COLDER FOR ST  
LAWRENCE ISLAND FOR SNOW BUT WILL BE RAIN ALONG THE WEST COAST  
DURING THE DAY AND EVENING WITH TRANSITION OR MIXTURE OF RAIN AND  
SNOW OVERNIGHT. ALONG THE NORTHERN BERING SEA AND BERING STRAIT  
THE WINDS WILL REMAIN FROM NORTHEAST WITH SMALL CRAFT AND BRISK  
WIND ADVISORIES EXTENDING FROM ST LAWRENCE ISLAND THROUGH POINT  
HOPE. ALTHOUGH WINDS ARE NOT REACHING STRENGTH FOR SMALL CRAFT  
ADVISORY IN NORTON SOUND THEY ARE CLOSE. EXPECT THE WINDS TO  
DIMINISH IN NORTON SOUND BY TUESDAY.  
 
CENTRAL AND EASTERN INTERIOR: MOSTLY SUNNY SKIES ACROSS MUCH OF  
THE INTERIOR WITH HIGH CLOUDS MOVING IN FROM SOUTH. CONTINUE TO  
HAVE THE WARMING TREND THROUGH MONDAY. FOR FAIRBANKS, EXPECTING  
HIGH TEMPERATURES IN MID TO UPPER 50S FOR MONDAY WITH OVERNIGHT  
LOWS AROUND 30 MONDAY MORNING. THE WARMING TEMPERATURES WILL ALLOW  
FOR THE CONTINUED MELT OF AREA SNOWPACK. EXPECT SLIGHTLY COOLER  
TEMPERATURES ACROSS THE INTERIOR ON TUESDAY AND WEDNESDAY AS A  
WEAK FRONT WILL BRING INCREASED CLOUD COVER AND AT LEAST A SLIGHT  
CHANCE FOR SOME RAIN OR SNOW SHOWERS.THE GFS AND NAM BRING MUCH  
MORE PRECIPITATION ALONG THE FRONTAL BOUNDARY BUT LIKELY A BIT  
OVERDONE IN THE PRECIPITATION. THUS EXPECT ISOLATED SHOWERS  
EXTENDING FROM FORT YUKON TO GALENA ON TUESDAY INTO WEDNESDAY.  
 

 
   
FIRE WEATHER
 
NO RED FLAG CONCERNS. DRY AND SUNNY CONDITIONS  
WILL CONTINUE ACROSS THE INTERIOR TODAY WITH ONLY SLIGHT INCREASE  
OF MOISTURE FOR MONDAY. THERE WILL BE AN INCREASE IN MOISTURE  
RESULTING IN INCREASE IN AFTERNOON MINIMUM RH VALUES ON TUESDAY.  
HOWEVER, THE GRADUAL INCREASE IN DOWNSLOPE WINDS WITH SOUTHERLY  
FLOW AND MOISTURE WILL LIMIT ANY PRECIPITATION IN THE ALASKA RANGE  
ON MONDAY NIGHT INTO TUESDAY.  
 

 
   
AFG WATCHES/WARNINGS/ADVISORIES
 
 
SMALL CRAFT ADVISORY FOR PKZ210.  
 
BRISK WIND ADVISORY FOR PKZ220-PKZ225.  

 
 

 
 
APR 17  
 
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