Hydrometeorological Discussion
Issued by NWS Alaska-Pacific RFC

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AGAK78 PACR 122340
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HYDROMETEOROLOGICAL DISCUSSION
NWS ALASKA PACIFIC RIVER FORECAST CENTER ANCHORAGE AK
300 PM AKDT FRI JAN 12 2018

...FLOOD POTENTIAL...

THE FLOOD POTENTIAL IS CURRENTLY LOW FOR THE STATE.

...HYDROMETEOROLOGICAL DISCUSSION....

THE WEATHER PATTERN THIS WEEKEND INTO EARLY NEXT WEEK WILL HAVE LOW
PRESSURE/TROUGHING OVER THE BERING AND A RIDGE OVER WESTERN NORTH
AMERICA... WITH MULTIPLE FRONTS BRINGING PRECIPITATION TO PORTIONS
OF THE GULF COAST THROUGH THE PERIOD.  THE FREEZING LEVEL OVER
SOUTHEAST ALASKA WILL BE RISING SIGNIFICANTLY LATE SATURDAY THROUGH
MID-DAY SUNDAY.

...SNOW DEPTH...

REPORTED SNOW DEPTHS AROUND THE STATE RANGE FROM NO SNOW OVER
SOUTHERN SOUTHEAST TO 103 INCHES AT A STATION NEAR THOMPSON PASS...
BUT MOST LOW TO MID ELEVATION STATIONS ACROSS THE STATE ARE
REPORTING LESS THAN 36 INCHES OF SNOW.

...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 JANUARY INCLUDE:  14 INCHES IN ANCHORAGE... 20
INCHES NEAR WASILLA... 17 INCHES AT LAKE MINCHUMINA... 10 TO 18
INCHES IN THE FAIRBANKS AREA... 42 INCHES AT EAGLE... 22 INCHES ON
THE LOWER SELAWIK RIVER... 23 INCHES ON KOTZEBUE LAKE... AND 24
INCHES AT COLVILLE VILLAGE.  AS OF EARLY JANUARY THERE ARE STILL
NUMEROUS OPEN HOLES OF VARIOUS SIZES ON THE LOWER KUSKOKWIM RIVER...
MAKING TRAVELING ON THE RIVER HAZARDOUS.

...LONG RANGE...

THE 6 TO 10 DAY TEMPERATURE OUTLOOK HAS INCREASED PROBABILITIES OF
ABOVE NORMAL TEMPERATURES OVER THE NORTHERN MAINLAND AND WESTERN
INTERIOR... AS WELL AS OVER MOST OF THE SOUTHWEST MAINLAND AND MOST
OF THE EASTERN INTERIOR.  THERE ARE INCREASED PROBABILITIES OF BELOW
NORMAL TEMPERATURES OVER THE FAR SOUTHEASTERN MAINLAND AND OVER THE
PANHANDLE.  TEMPERATURES ARE LIKELY TO BE NEAR NORMAL OVER THE REST
OF THE MAINLAND.

THE 6 TO 10 DAY PRECIPITATION OUTLOOK HAS INCREASED PROBABILITIES OF
ABOVE NORMAL PRECIPITATION OVER THE WESTERN MAINLAND AND CENTRAL
NORTH SLOPE AND BROOKS RANGE.  THERE ARE INCREASED PROBABILITIES OF
BELOW NORMAL PRECIPITATION OVER SOUTHEAST ALASKA... THE SOUTHEAST
MAINLAND... AND EASTERN PORTIONS OF SOUTHCENTRAL.  NEAR NORMAL
PRECIPITATION IS LIKELY OVER THE REST OF THE MAINLAND.

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

$$
ACL



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