302  
AGAK78 PACR 232207  
HMDACR  
 
HYDROMETEOROLOGICAL DISCUSSION  
NWS ALASKA PACIFIC RIVER FORECAST CENTER ANCHORAGE AK  
300 PM AKDT SAT MAY 23 2015  
   
..FLOOD POTENTIAL
 
 
 
A FLOOD WARNING IS IN EFFECT FOR FORT YUKON ON THE PORCUPINE RIVER.  
A FLOOD WATCH FOR THE PORCUPINE RIVER HAS BEEN UPDATED TO INCLUDE  
THE REACH FROM THE MOUTH OF THE PORCUPINE RIVER TO THE MOUTH OF THE  
COLEEN RIVER UNTIL SUNDAY AFTERNOON. VERY WARM TEMPERATURES HAVE  
DRAMATICALLY INCREASED SNOW MELT...RESULTING IN BANKFULL OR OVER  
BANKFULL CONDITIONS.  
 
YUKON RIVER... HIGH WATER CONTINUES FOR ALAKANUK AND EMMONAK... AND  
WATER LEVELS REMAIN STEADY. SATELLITE IMAGES CONTINUE TO DEPICT SOME  
ICE REMAINING IN THE DELTA REGION. THE REST OF THE YUKON RIVER IS  
OPEN.  
 
WATER IS FLOWING OVER PORTIONS OF THE DALTON HIGHWAY BETWEEN  
MILEPOSTS 394 AND THE DEADHORSE AIRPORT. THE ROAD REMAINS CLOSED  
BETWEEN MILE 334 AN 413 AND IS EXPECTED TO REMAIN CLOSED THROUGH  
NEXT WEEK. A FLOOD WARNING HAS BEEN ISSUED UNTIL 415 PM SUNDAY.  
SINCE WEDNESDAY WATER LEVELS IN THE VICINITY OF THE DEADHORSE  
AIRPORT HAVE DROPPED.  
 
THE FLOOD ADVISORY FOR THE COLVILLE AND KUPARUK RIVERS WILL BE  
ALLOWED TO CONTINUE AT LEAST FOR ONE MORE DAY AS WATER LEVELS  
CONTINUE TO RECEDE. THE OBSERVER AT COLVILLE VILLAGE REPORTS THAT  
THE RIVER PEAKED LAST EVENING AT 11PM AND CONTINUES TO FALL. ON THE  
KUPARUK... 3 LOW WATER CROSSING ARE INUNDATED WITH WATER AND MAKING  
TRAVEL ALONG THE SPINE ROAD DIFFICULT.  
 
PLEASE NOTE THAT EVEN THOUGH A RIVER REACH MAY BE LABELED OPEN OR  
MOSTLY OPEN... IT IS STILL POSSIBLE FOR ICE RUNS FROM UPSTREAM TO  
PASS THROUGH THESE REACHES AND MAKE TRAVEL UNSAFE.  
 
FOR MORE UP-TO-DATE BREAKUP INFORMATION... PLEASE VISIT:  
HTTP://APRFC.ARH.NOAA.GOV/DATA/MAPS/BRKUP_MAP.PHP. AND PLEASE REFER  
TO THE WATCH... WARNING... AND ADVISORY PRODUCTS FOR MORE  
INFORMATION.  
   
..HYDROMETEOROLOGICAL DISCUSSION
 
 
THE STRONG UPPER LEVEL RIDGE OVER THE EASTERN PACIFIC AND WESTERN  
NORTH AMERICA HAS SHIFTED SLIGHTLY EAST AND WILL CONTINUE TO DO SO  
WITH THE DEVELOPMENT OF LOW IN THE EASTERN BERING SEA BY SATURDAY  
EVENING. THERE ARE SEVERAL SHORT WAVES ENTRENCHED IN THE SOUTHERLY  
FLOW THAT CARRIES MOISTURE FROM THE REMNANTS OF TYPHOON DOLPHIN.  
MUCH NEEDED RAIN IS ANTICIPATED ACROSS MUCH OF SOUTHWEST AND  
SOUTHCENTRAL ALASKA AS THE ASSOCIATED FRONT MOVING ACROSS THE  
REGION.  
 
   
..PRECIPITATION
 
 
PRECIPITATION TOTALS OVER THE 24 HOURS ENDING AT 4 AM TODAY:  
LOCATION NAME PE TS 24 HR  
======== ==== == == =====  
CKLA2 CAPE KIAVAK RAWS PC RG : 0.56  
PADU DUTCH HARBOR PP RZ : 0.45  
PAVC KING COVE PP RZ : 0.36  
ILRA2 ILIAMNA RIVER NEAR P PP RG : 0.33  
NRDA2 NUYAKUK R NR DILLING PP RG : 0.32  
SNTA2 SAND POINT CRN PP RG : 0.30  
PADQ KODIAK PP RZ : 0.29  
SRVA2 STONY RIVER RAWS PP RG : 0.26  
PSJA2 PORT SAN JUAN PC RM : 0.20  
PAOO TOKSOOK BAY PP RZ : 0.20  
PAEM EMMONAK PP RZ : 0.20  
HILA2 ANCHORAGE HILLSIDE PC RM : 0.20  
 
   
..LONG RANGE
 
 
THE 6 TO 10 DAY TEMPERATURE OUTLOOK HAS INCREASED CHANCES OF ABOVE  
NORMAL TEMPERATURES OVER THE ENTIRE STATE.  
 
THE 6 TO 10 DAY PRECIPITATION OUTLOOK HAS INCREASED CHANCES FOR BELOW NORMAL  
PRECIPITATION OVER MOST OF SOUTHEASTERN MAINLAND AND THE PANHANDLE  
OF ALASKA.  
 
PLEASE REFER TO THE CLIMATE PREDICTION CENTER HOME PAGE FOR FURTHER  
INFORMATION.  
   
................................................................
 
 
A GRAPHICAL VERSION OF THE HYDROMET DISCUSSION IS AVAILABLE AT  
HTTP://APRFC.ARH.NOAA.GOV/PRODUCTS/GHMD.PHP  
 
A GRAPHICAL SLIDE SHOW PRESENTATION OF HYDROMET ISSUES IS AVAILABLE  
AT HTTP://APRFC.ARH.NOAA.GOV/PRODUCTS/PRESENT  

 
 
ETH  
 
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