Hydrometeorological Discussion
Issued by NWS Alaska-Pacific RFC

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AGAK78 PACR 222256
HMDACR

HYDROMETEOROLOGICAL DISCUSSION
NWS ALASKA PACIFIC RIVER FORECAST CENTER ANCHORAGE AK
300 PM AKDT WED OCT 22 2014

...FLOOD POTENTIAL...

FLOOD POTENTIAL IS CURRENTLY LOW FOR THE STATE OF ALASKA.

...HYDROMETEOROLOGICAL DISCUSSION...

THE UPPER LEVEL PATTERN THIS MORNING WAS DOMINATED BY A LARGE LOW IN
THE GULF AND NORTHERN PACIFIC... WITH A RIDGE IN THE EASTERN
BERING... AND ANOTHER LOW IN SIBERIA.  THE RIDGE WILL MOVE
SOUTHEASTWARD TODAY AND THURSDAY... PUSHING THE LOW INTO THE
SOUTHEASTERN GULF AND SHARPENING THE ASSOCIATED TROUGH... AND
KEEPING THE CHANCE FOR PERIODS OF PRECIPITATION OVER SOUTHEAST
ALASKA.  MEANWHILE THE SIBERIAN LOW WILL ALSO MOVE EASTWARD AND WILL
PUSH A FRONT INTO THE WESTERN MAINLAND THURSDAY.

FREEZING LEVELS WERE AT THE SURFACE OVER MOST OF THE MAINLAND THIS
MORNING... RISING TO 2500-5100 FT FROM KODIAK TO YAKUTAT TO ANNETTE.
FREEZING LEVELS ARE NOT EXPECTED TO CHANGE MUCH OVER THE NEXT COUPLE
OF DAYS.

PRECIPITATION... SELECTED PRECIPITATION TOTALS OVER THE 24 HOURS
ENDING AT 4 AM TODAY:

LOCATION NAME                 PE TS   24 HR
======== ====                 == ==   =====
THOA2    THORNE BAY RAWS      PC RG :  1.09
HADA2    HAIDA RAWS           PC RG :  0.96
HONA2    HOONAH RAWS          PC RG :  0.71
PAKW     KLAWOCK              PP RZ :  0.64
GDWA2    GIRDWOOD FIRE STN    PC RG :  0.57
SHLA2    SHELTER COVE RAWS    PC RG :  0.55
RBTA2    RABBIT CREEK RAWS    PC RG :  0.31
PAKT     KETCHIKAN            PP RZ :  0.29

...LONG RANGE...

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

THE 6 TO 10 DAY PRECIPITATION OUTLOOK HAS INCREASED CHANCES FOR
ABOVE NORMAL PRECIPITATION OVER THE WESTERN HALF OF THE STATE AND
OVER THE NORTHEAST MAINLAND.  THERE ARE INCREASED CHANCES FOR BELOW
NORMAL PRECIPITATION OVER SOUTHEAST ALASKA AND MOST OF THE COPPER
RIVER BASIN.

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

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

THIS HYDROMET DISCUSSION WILL BE ISSUED DAILY UNTIL FREEZE-UP BEGINS
IN THE FALL.

A GRAPHICAL VERSION OF THE HYDROMET DISCUSSION IS AVAILABLE AT
HTTP://APRFC.ARH.NOAA.GOV/PRODUCTS/GHMD.PHP

$$

ACL



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