443  
AGAK78 PACR 202303  
HMDACR  
 
HYDROMETEOROLOGICAL DISCUSSION  
NWS ALASKA PACIFIC RIVER FORECAST CENTER ANCHORAGE AK  
300 PM AKDT FRI APR 20 2018  
   
..FLOOD POTENTIAL
 
 
 
THE FLOOD POTENTIAL IS CURRENTLY LOW FOR THE STATE.  
   
..HYDROMETEOROLOGICAL DISCUSSION.
 
 
 
A LOW PRESSURE SYSTEM IS WEAKENING IN THE GULF... BUT IT WILL STILL  
BRING SHOWERS OVER MUCH OF THE SOUTHERN MAINLAND AND INTO THE  
EASTERN INTERIOR TODAY. AN UPPER LEVEL TROUGH WILL DIG  
SOUTHWESTWARD ACROSS THE MAINLAND TODAY AND DEVELOP A LOW IN THE  
EASTERN BERING ON SATURDAY. THIS LOW... AND A LOW MOVING SOUTH OF  
IT INTO THE GULF... WILL KEEP PERIODS OF RAIN ALONG THE GULF COAST  
AND SOUTHEAST ALASKA THROUGH THE WEEKEND... WITH PERIODS OF SHOWERS  
LIKELY OVER THE SOUTHERN MAINLAND.  
   
..SNOW DEPTH
 
 
REPORTED SNOW DEPTHS AROUND THE STATE RANGE FROM NO SNOW AT  
BETHEL... SOME STATIONS ON KODIAK ISLAND... THE AKPEN... AND MANY  
LOW ELEVATION AND COASTAL STATIONS IN SOUTHEAST ALASKA... TO 111  
INCHES AT A STATION NEAR THE TOP OF MOUNT ALYESKA. SNOW DEPTHS HAVE  
DECREASED AT MOST LOCATIONS OVER THE PAST WEEK.  
 
NRCS SNOW WATER EQUIVALENT DATA FROM EARLY APRIL SHOW GREATER THAN  
NORMAL SNOW WATER CONTENT IN THE HILLS NORTHEAST OF FAIRBANKS AND  
NEAR BETTLES... GENERALLY LOWER THAN NORMAL SNOW WATER CONTENT FROM  
THE KENAI PENINSULA NORTH THROUGH THE SUSITNA VALLEY... AND NEAR  
NORMAL SNOW WATER CONTENT IN THE EASTERN COPPER RIVER VALLEY.  
   
..ICE THICKNESS
 
 
 
ICE THICKNESS READINGS ARE TAKEN AT THE START OF THE MONTH ONCE THE  
ICE IS THICK ENOUGH TO SAFELY MEASURE. ICE THICKNESS MEASUREMENTS  
REPORTED FOR EARLY APRIL INCLUDE:  
25 TO 28 INCHES IN ANCHORAGE...  
28 INCHES NEAR WASILLA...  
20 INCHES NEAR MCCARTHY...  
36 INCHES AT LAKE MINCHUMINA...  
33 TO 37 INCHES ON THE LOWER KUSKOKWIM...  
29 INCHES ON CROOKED CREEK AT THE VILLAGE OF CROOKED CREEK AND  
41 INCHES ON THE KUSKOKWIM AT CROOKED CREEK...  
25 TO 31 INCHES IN THE FAIRBANKS-MIDDLE TANANA BASIN AREA...  
40 INCHES AT EAGLE...  
24 INCHES AT GALENA...  
32 INCHES AT PILOT STATION...  
34 INCHES ON KOTZEBUE LAKE...  
37 INCHES ON THE SELAWICK RIVER...  
20 INCHES AT BETTLES...  
AND 48 INCHES AT COLVILLE VILLAGE.  
   
..LONG RANGE
 
 
THE 6 TO 10 DAY TEMPERATURE OUTLOOK HAS INCREASED PROBABILITIES OF  
ABOVE NORMAL TEMPERATURES OVER MUCH OF THE WESTERN MAINLAND AS WELL  
AS OVER MOST OF THE NORTH SLOPE AND BROOKS RANGE. THERE ARE  
INCREASED PROBABILITIES OF BELOW NORMAL TEMPERATURES OVER MUCH OF  
SOUTHCENTRAL AND THE SOUTHEAST MAINLAND... AND OVER THE NORTHERN  
THIRD OF THE PANHANDLE.  
 
THE 6 TO 10 DAY PRECIPITATION OUTLOOK HAS INCREASED PROBABILITIES OF  
ABOVE NORMAL PRECIPITATION OVER MOST OF THE MAINLAND. NEAR NORMAL  
PRECIPITATION IS LIKELY OVER PART OF THE SOUTHEAST MAINLAND AND OVER  
MOST OF THE PANHANDLE.  
 
PLEASE REFER TO THE CLIMATE PREDICTION CENTER HOME PAGE FOR FURTHER  
INFORMATION.  
   
................................................................
 
 
THIS TEXT PRODUCT WILL BE ISSUED WEEKLY ON FRIDAY UNTIL RIVER ICE  
BREAKUP IN MAY 2018. A GRAPHICAL VERSION OF THE HYDROMET DISCUSSION  
IS AVAILABLE AT HTTP://WWW.WEATHER.GOV/APRFC/GRAPHICALHMD  
 

 
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