Hydrometeorological Discussion
Issued by NWS Alaska-Pacific RFC

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AGAK78 PACR 302256
HMDACR

HYDROMETEOROLOGICAL DISCUSSION
NWS ALASKA PACIFIC RIVER FORECAST CENTER ANCHORAGE AK
300 PM AKDT TUE SEP 30 2014

...FLOOD POTENTIAL...

FLOOD POTENTIAL IS LOW FOR THE STATE OF ALASKA.

...HYDROMETEOROLOGICAL DISCUSSION...

THE UPPER LEVEL PATTERN THIS MORNING HAD A LOW NORTH OF THE STATE
WITH A TROUGH INTO THE SOUTHERN YUKON TERRITORY... ANOTHER LOW IN
THE BASE OF THE TROUGH... A RIDGE FROM THE NORTHEAST PACIFIC ACROSS
THE AKPEN AND INTO THE BERING... AND A LOW SOUTH OF THE ALEUTIANS.
THE TROUGH AND YUKON TERRITORY LOW WILL SWING EAST TODAY.  ANOTHER
SHORTWAVE ROTATING AROUND THE NORTHERN LOW WILL CONTINUE THE SHOWERS
OVER NORTHERN ALASKA OVER THE NEXT COUPLE OF DAYS.  THE LOW SOUTH OF
THE ALEUTIANS WILL MOVE EASTWARD TODAY BEFORE TURNING NORTHEAST
TOWARDS THE GULF.  THIS LOW WILL ALSO ABSORB THE REMNANTS OF
TROPICAL STORM KAMMURI.  THE FRONT FROM THIS LOW WILL BEGIN
IMPACTING SOUTHERN SOUTHEAST THURSDAY MORNING... WITH PERIODS OF
MODERATE TO POTENTIALLY HEAVY RAIN SPREADING FROM SOUTHERN SOUTHEAST
TO NORTHERN SOUTHEAST DURING THE DAY.

FREEZING LEVELS THIS MORNING RANGED FROM 300 TO 3000 FT OVER THE
MAINLAND... RISING TO 4300-5600 FT OVER SOUTHEAST.  FREEZING LEVELS
WILL BE STEADY OR FALLING OVER MOST OF THE STATE TODAY.

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

LOCATION NAME                 PE TS   24 HR
======== ====                 == ==   =====
SHLA2    SHELTER COVE RAWS    PC RG :  1.13
ALEA2    ALSEK RIVER          PC RG :  0.60
DCKA2    DAHL CREEK NR KOBUK  PC RG :  0.42
BGLA2    BERING GLACIER RAWS  PC RG :  0.37
HADA2    HAIDA RAWS           PC RG :  0.34
BKLA2    BUCKLAND UPLANDS     PC RG :  0.31
SRYA2    SITUK RIVER          PC RG :  0.30
PASI     SITKA                PP RZ :  0.24
PAKW     KLAWOCK              PP RZ :  0.24
MCAA2    MONTANA CREEK        PC RG :  0.24
SOUA2    SOULE RIVER          PC RG :  0.20

...LONG RANGE...

THE 6 TO 10 DAY TEMPERATURE OUTLOOK HAS INCREASED CHANCES OF ABOVE
NORMAL TEMPERATURES OVER THE COASTAL NORTH SLOPE... THE WESTERN AND
SOUTHWESTERN COASTAL REGIONS... AND THE AKPEN.  THERE ARE INCREASED
CHANCES FOR BELOW NORMAL TEMPERATURES OVER THE EASTERN INTERIOR...
SOUTHEAST MAINLAND... PORTIONS OF SOUTHCENTRAL MAINLAND... AND
NORTHERN SOUTHEAST ALASKA.

THE 6 TO 10 DAY PRECIPITATION OUTLOOK HAS INCREASED CHANCES FOR
ABOVE NORMAL PRECIPITATION OVER SOUTHEAST ALASKA AND FROM THE YUKON
DELTA TO THE AKPEN AND KODIAK ISLAND.  THERE ARE INCREASED CHANCES
FOR BELOW NORMAL PRECIPITATION OVER MOST OF THE INTERIOR AND
NORTHERN MAINLAND.

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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