Hydrometeorological Discussion
Issued by NWS Alaska-Pacific RFC

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AGAK78 PACR 022343
HMDACR

HYDROMETEOROLOGICAL DISCUSSION
NWS ALASKA PACIFIC RIVER FORECAST CENTER ANCHORAGE AK
300 PM AKDT FRI DEC 2 2016

...FLOOD POTENTIAL...

THE FLOOD POTENTIAL IS LOW FOR THE ENTIRE STATE.

...HYDROMETEOROLOGICAL DISCUSSION....

THE UPPER LEVEL PATTERN TODAY HAS A TROUGH OVER MOST OF THE STATE...
A RIDGE OVER MUCH OF THE BERING, AND A LOW IN THE SEA OF OKHOTSK.
THE RIDGE WILL MOVE EAST TO BE CENTERED OVER THE WESTERN MAINLAND BY
LATE SUNDAY AS A LOW FORMS IN THE BASE OF THE TROUGH OVER THE GULF
AND THEN MOVES OFF TO THE SOUTHEAST.  THIS WILL KEEP THE HEAVIEST
PRECIPITATION OVER SOUTHEAST ALASKA THROUGH MOST OF THE WEEKEND...
AND WILL BRING COLDER AIR OVER MOST OF THE STATE FOR THE WEEKEND.
THE PRECIPITATION OVER SOUTHEAST ALASKA WILL DIMINISH THROUGH THE
WEEKEND.

...SNOW...

REPORTED LOW ELEVATION SNOW DEPTHS ARE GENERALLY 10 INCHES OR LESS
ACROSS THE STATE... WITH LOWER TOTALS OVER THE WESTERN MAINLAND.
OVER THE LAST TWO DAYS A STORM SYSTEM HAS BROUGHT FRESH SNOW FROM
SOUTHCENTRAL TO NORTHERN SOUTHEAST AND NORTH INTO THE CENTRAL AND
EASTERN INTERIOR.

...ICE...

A FEW ICE MEASUREMENTS HAVE BEEN REPORTED FOR THE START OF DECEMBER.
ICE THICKNESS WAS 9 INCHES IN ANCHORAGE... BETWEEN 10 AND 27 INCHES
IN THE FAIRBANKS AREA... 14 INCHES AT BETHEL... AND 16 INCHES AT
COLVILLE VILLAGE.

...LONG RANGE...

THE 6 TO 10 DAY TEMPERATURE OUTLOOK HAS INCREASED PROBABILITIES OF
ABOVE NORMAL TEMPERATURES OVER THE CENTRAL AND WESTERN NORTH SLOPE
AND THE FAR WESTERN BROOKS RANGE.  THERE ARE INCREASED PROBABILITIES
OF BELOW NORMAL TEMPERATURES OVER MOST OF THE REST OF MAINLAND...
AND OVER ALL OF SOUTHEAST ALASKA.

THE 6 TO 10 DAY PRECIPITATION OUTLOOK HAS INCREASED PROBABILITIES OF
BELOW NORMAL PRECIPITATION OVER THE ENTIRE STATE.

PLEASE REFER TO THE CLIMATE PREDICTION CENTER HOME PAGE FOR FURTHER
INFORMATION.

....................................................................

THIS TEXT PRODUCT WILL BE ISSUED WEEKLY ON FRIDAY UNTIL BREAKUP IN
THE SPRING. A GRAPHICAL VERSION OF THE HYDROMET DISCUSSION IS
AVAILABLE AT HTTP://WWW.WEATHER.GOV/APRFC/GRAPHICALHMD

$$
ACL


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