Hydro-Met Discussion - APRFC


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AGAK78 PACR DDHHMM
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HYDROMETEOROLOGICAL DISCUSSION
NWS ALASKA PACIFIC RIVER FORECAST CENTER ANCHORAGE AK
300 PM AKDT FRI JAN 23 2015 

...FLOOD POTENTIAL... 

FLOOD POTENTIAL IS LOW FOR THE STATE OF ALASKA.  PERIODS OF RAIN IN 
SOUTHEAST ALASKA TODAY THROUGH SATURDAY MAY CAUSE RAPID IN-BANK 
RISES ON AFFECTED SMALL STREAMS.

...HYDROMETEOROLOGICAL DISCUSSION...

MULTIPLE SYSTEMS MOVED INTO THE GULF OVER THE PAST WEEK... KEEPING 
THE HEAVIEST PRECIPITATION OVER SOUTHEAST AND THE GULF COASTAL 
REGION.  RAIN WAS HEAVY OVER MUCH OF SOUTHEAST ALASKA ON TUESDAY AND 
WEDNESDAY... ESPECIALLY AT KETCHIKAN.  MORE RAIN IS EXPECTED IN 
SOUTHEAST ALASKA THROUGH SATURDAY.  A COLD TROUGH MOVING SOUTH AND 
EAST OUT OF THE NORTHWEST MAINLAND IS BRINGING AREAS OF SNOW TO 
SOUTHCENTRAL ALASKA NORTHWARD INTO THE INTERIOR.  AS THIS TROUGH 
MOVES EAST OVER THE NEXT FEW DAYS TEMPERATURES WILL COOL ACROSS MUCH 
OF THE STATE.

...SNOW DEPTH...

OVER THE PAST WEEK SNOW DEPTHS HAVE GENERALLY INCREASED SLIGHTLY 
OVER MOST OF THE MAINLAND... WHILE SNOW DEPTHS HAVE DECREASED 
AROUND THE JUNEAU AREA.

...ICE THICKNESS...

ICE THICKNESS MEASURED AT THE BEGINNING OF JANUARY INCLUDED: 14 TO 
29 INCHES AROUND THE MIDDLE TANANA BASIN... 11 TO 15 INCHES AROUND 
THE ANCHORAGE AREA... 31 INCHES AT BETTLES... AND 32 INCHES AT 
COLVILLE VILLAGE.

...LONG RANGE...

THE 6 TO 10 DAY TEMPERATURE OUTLOOK HAS INCREASED CHANCES OF ABOVE 
NORMAL TEMPERATURES OVER THE AKPEN... KODIAK ISLAND... KENAI 
PENINSULA... NORTH GULF COASTAL REGION... AND SOUTHEAST ALASKA.

THE 6 TO 10 DAY PRECIPITATION OUTLOOK HAS INCREASED CHANCES FOR 
BELOW NORMAL PRECIPITATION OVER MOST OF THE MAINLAND... AND 
INCREASED CHANCES FOR ABOVE NORMAL PRECIPITATION OVER SOUTHEAST 
ALASKA AND A PORTION OF THE SOUTHEAST MAINLAND.

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

THIS HYDROMET DISCUSSION WILL BE ISSUED EVERY FRIDAY UNTIL BREAKUP 
BEGINS IN THE SPRING.
 
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
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ACL