911  
WWAK81 PAFC 171226  
SPSAER  
 
SPECIAL WEATHER STATEMENT  
NATIONAL WEATHER SERVICE ANCHORAGE AK  
426 AM AKDT THU SEP 17 2020  
 
AKZ101-180030-  
ANCHORAGE-  
INCLUDING THE CITIES OF ANCHORAGE, EAGLE RIVER, INDIAN,  
AND EKLUTNA  
426 AM AKDT THU SEP 17 2020  
 
...STRONG WINDS OCCURRING ALONG TURNAGAIN ARM AND HIGHER  
ELEVATIONS TODAY...  
 
...GUSTY WINDS ACROSS THE REMAINDER OF THE ANCHORAGE AREA AND  
MATANUSKA VALLEY TODAY...  
 
THE THIRD STRONG WIND EVENT OF THE FALL SEASON IS BRINGING  
ANOTHER ROUND OF STRONG WINDS TO ANCHORAGE AND THE MATANUSKA  
VALLEY TODAY.  
 
TURNAGAIN ARM AND HIGHER ELEVATIONS OF ANCHORAGE (INCLUDING THE  
UPPER HILLSIDE)...  
 
EAST TO SOUTHEAST WINDS ARE INCREASING, WITH PEAK WIND GUSTS TO  
60 TO 70 MPH EXPECTED TODAY. GUSTS OF 45 TO 60 MPH WILL THEN  
PERSIST TONIGHT BEFORE DIMINISHING ON FRIDAY.  
 
REMAINDER OF THE ANCHORAGE AREA...  
 
THE EAGLE RIVER VALLEY AND AREAS CLOSE TO THE MOUNTAINS COULD  
SEE SOUTHEAST WIND GUSTS TO 30 MPH THIS MORNING. THE SOUTHEAST  
WINDS WILL BECOME MORE WIDESPREAD AND STRONGER ACROSS ALL OF  
ANCHORAGE THURSDAY AFTERNOON, WITH GUSTS AS HIGH AS 50 MPH NEAR  
THE MOUNTAINS (INCLUDING EAST ANCHORAGE AND EAGLE RIVER) AND GUSTS  
TO 35 MPH IN THE ANCHORAGE BOWL. WINDS WILL DIMINISH THURSDAY  
EVENING, BUT REMAIN GUSTY THROUGH THURSDAY NIGHT.  
 
MATANUSKA VALLEY...EAST WINDS WILL INCREASE THIS MORNING AND PEAK  
DURING THE DAY TODAY, WITH GUSTS OF 25 TO 40 MPH. THE STRONGEST  
WINDS WILL OCCUR ALONG THE KNIK RIVER VALLEY ON INTO WASILLA.  
WINDS WILL GRADUALLY DIMINISH THURSDAY NIGHT.  
 
PRECAUTIONS SHOULD BE TAKEN TODAY TO SECURE LOOSE OBJECTS. THE  
WINDS WILL ALSO HAVE THE POTENTIAL TO BRING DOWN BRANCHES FROM  
TREES.  
 

 
 
AKZ125-145-180030-  
WESTERN PRINCE WILLIAM SOUND-SUSITNA VALLEY-  
INCLUDING THE CITIES OF WHITTIER, SEWARD, GIRDWOOD, MOOSE PASS,  
TALKEETNA, WILLOW, AND CANTWELL  
426 AM AKDT THU SEP 17 2020  
 
...HEAVY RAIN WILL LEAD TO ELEVATED RIVER LEVELS IN THE SEWARD  
AREA TODAY AND THE WESTERN SUSITNA VALLEY ON FRIDAY...  
   
..STRONG WINDS OCCURRING THROUGH PORTAGE VALLEY TODAY
 
 
A STRONG FRONT MOVING ACROSS SOUTHCENTRAL TODAY WILL PRODUCE  
PERIODS OF HEAVY RAIN IN SEWARD AND SURROUNDING MOUNTAINS AS WELL  
AS ACROSS THE WESTERN SUSITNA VALLEY AND BORDERING AREAS OF THE  
ALASKA RANGE.  
 
FOR SEWARD...  
THE HEAVIEST RAIN WILL CONTINUE THROUGH MIDDAY TODAY, WITH A  
TOTAL OF 2 TO 2.5 INCHES OF RAIN EXPECTED THROUGH THIS AFTERNOON.  
ADDITIONAL RAINFALL OF AROUND HALF IN INCH IS LIKELY TONIGHT.  
THIS WILL LEAD TO ELEVATED WATER LEVELS IN THE RESURRECTION RIVER  
AND OTHER AREA RIVERS AND STREAMS.  
 
FOR PORTAGE VALLEY...  
STRONG WIND GUSTS TO 55 MPH HAVE BEEN REPORTED IN PORTAGE ALREADY  
THIS MORNING. GUSTS TO 65 MPH ARE POSSIBLE THIS MORNING, GRADUALLY  
DIMINISHING TO 35 TO 50 MPH THIS AFTERNOON.  
 
WESTERN SUSITNA VALLEY...  
THE HEAVIEST RAIN FALL THROUGH THIS AFTERNOON, WITH AROUND 1 INCH  
OF RAIN EXPECTED IN THE VALLEY AND 2 INCHES IN THE HEADWATERS OF  
THE YENTNA AND SKWENTNA RIVERS. THIS WILL LEAD TO ELEVATED RIVER  
LEVELS BEGINNING TONIGHT INTO FRIDAY, AS THESE RIVERS ARE SLOWER  
TO RESPOND TO THE RAINFALL.  
 

 
 
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