796  
FXAK68 PAFC 121326  
AFDAFC  
 
SOUTHCENTRAL AND SOUTHWEST ALASKA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE ANCHORAGE AK  
526 AM AKDT TUE AUG 12 2025  
   
SHORT TERM FORECAST SOUTHCENTRAL ALASKA (DAYS 1 THROUGH 3)
 
 
DISCUSSION:  
 
HIGH PRESSURE WILL BEGIN TO SHIFT EAST TOWARDS THE ALCAN BORDER  
TODAY THEN INTO WESTERN CANADA BY TOMORROW MORNING. WESTERN  
SOUTHCENTRAL WILL SEE A BIT MORE CLOUD COVER TODAY AS A WEAK  
SHORTWAVE TROUGH TRACKS ALONG THE BACKSIDE OF THE RIDGE. THE COPPER  
BASIN SHOULD SEE ANOTHER NICE MOSTLY SUNNY DAY WITH TEMPERATURES  
WARMING TO INTO THE LOWER 70S FOR THE LOWER VALLEYS. ELSEWHERE,  
ACROSS SOUTHCENTRAL TEMPERATURES WILL BE NEAR NORMAL WITH READINGS  
IN THE 60S AND 70S FOR INLAND VALLEYS. WHILE LOWER ELEVATIONS OF  
MORE INLAND AREAS SHOULD REMAIN WARM AND DRY TODAY, COASTAL AREAS  
WILL SEE TEMPERATURES IN THE MID 50S TO LOWER 60S AND A SMATTERING  
OF SHOWERS DEVELOPING BY THIS EVENING.  
 
WEDNESDAY AND THURSDAY WILL SEE SEVERAL SHORTWAVE TROUGHS PROGRESS  
ACROSS THE BERING AND ALEUTIAN CHAIN BEFORE MOVING INTO  
SOUTHCENTRAL. THIS SERIES OF DISTURBANCES WILL BRING INCREASED  
CHANCES FOR PRECIPITATION TO FIRST KODIAK ISLAND AND WESTERN HALF OF  
SOUTHCENTRAL, THEN PROGRESSING INTO THE COPPER BASIN. THE NAM IS THE  
MOST ROBUST PRECIPITATION MAKER...AT LEAST EARLY ON...WITH THE GFS  
BECOMING MORE ROBUST HEADING INTO THURSDAY. THIS IS MOST LIKELY DUE  
TO THE NAM DEVELOPING A SLIGHTLY STRONGER SURFACE LOW NEAR KODIAK  
ISLAND AND DEEPER MID-LEVEL TROUGH. AS SUCH, HAVE STUCK WITH A BLEND  
OF THE GFS AND NAM FOR NOW WITH THE FORECAST BEING REFINED AS  
DETAILS BEGIN TO BETTER TAKE SHAPE.  
 
- PP  
 

 
 
.SHORT TERM FORECAST SOUTHWEST ALASKA/BERING SEA/ALEUTIANS  
(TUESDAY THROUGH THURSDAY)...  
 
VISIBILITY ACROSS THE ALEUTIANS VARIES BETWEEN ONE STATUTE MILE TO  
OVER 6 STATUE MILES AS THE EFFECTS FROM AN ELONGATED FRONT MOVING  
THROUGH THE AREA BRING RAIN, MIST AND FOG TO THE REGION. RAINFALL  
AMOUNTS OVER THE PAST 12 HOURS IS A FEW HUNDREDTHS OF AN INCH;  
GREATEST IN THE ALEUTIANS.  
 
THIS FRONT WILL CONTINUE TO PUSH ACROSS THE ALEUTIANS THOUGH  
SEPARATE THIS MORNING BRINGING A PERIOD OF DRY OR LIGHT RAIN TO  
THE ALASKA PENINSULA / THE FAR EASTERN ALEUTIANS. RAINFALL AMOUNTS  
WILL RANGE FROM A TRACE TO A FEW HUNDREDTHS AS OF 5:00AM TODAY;  
HIGHEST IN THE WESTERN ALEUTIANS. THE HEAVIEST RAIN WILL MOVE  
NORTHEASTWARD INTO THE NORTON SOUND AREA AS THE PARENT BERING LOW  
MOVES TOWARD THE BERING STRAIT TODAY. THE SECOND AREA OF  
PRECIPITATION MOVING ACROSS THE CENTRAL ALEUTIANS THIS MORNING  
ARRIVES AT THE SOUTHWEST COAST LATE THIS MORNING BRINGING RAIN  
AND SOUTHERLY TO SOUTHWESTERLY WINDS. THESE ONSHORE WINDS WILL  
ALLOW INCREASED WATER LEVELS DURING HIGH TIDE TO MINIMAL IMPACTS  
ARE POSSIBLE INTO LATE THIS EVENING. A HIGH SURF ADVISORY REMAINS  
IN EFFECT THROUGH LATE THIS EVENING FOR TOGIAK NORTHWARD.GAP WINDS  
WILL BE STRONG THE NEXT FEW DAYS. HIGH PRESSURE BUILDS INTO THE  
REGION THURSDAY RESULTING DRYING CONDITIONS AND AN INCREASED  
CHANCE FOR FOG.  
 
-DJ  
 

 
   
LONG TERM FORECAST (DAYS 4 THROUGH 7: FRIDAY THROUGH MONDAY)
 
 
BY FRIDAY, UPPER LEVEL TROUGHING WILL STRETCH ACROSS THE CENTRAL  
AND EASTERN TWO THIRDS OF THE STATE FROM THE ARCTIC TO THE  
SOUTHEAST PANHANDLE. HIGH PRESSURE RIDGING WILL CONTINUE TO BUILD  
OVER THE ALEUTIANS AND SOUTHWEST ALASKA, LIKELY PLAGUING THE  
BERING SEA WITH SOME FOG AND LOW STRATUS. THE TIGHTENING PRESSURE  
GRADIENT OVER THE ALASKA PENINSULA WILL PRODUCE GUSTY NORTHERLY  
GAP WINDS THROUGH FAVORABLE BAYS AND AND PASSES FRIDAY AND  
SATURDAY.  
 
RAIN SHOWERS MAY LINGER ACROSS SOUTHCENTRAL ON FRIDAY AS A  
SHORTWAVE MOVES ACROSS THE STATE AND GETS PULLED INTO THE GULF. A  
DRYING TREND IS EXPECTED TO COMMENCE WITH GENERALLY QUIET WEATHER  
THROUGH THE WEEKEND. A TROUGH MOVING OVER THE ALEUTIAN CHAIN THIS  
WEEKEND COULD BRING SHOWERS AND ENHANCED WINDS, BUT THIS FEATURE  
LOOKS PROGRESSIVE AND MOVE THROUGH QUICKLY. OVERALL, LOOK FORWARD  
TO A GENERALLY SETTLED WEATHER PATTERN ACROSS SOUTHERN ALASKA.  
 

 
   
AVIATION
 
 
PANC...VFR CONDITIONS WITH LIGHT WIND ARE EXPECTED TO PERSIST  
THROUGH THE PERIOD.  
 

 
 

 
 
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