Hydrometeorological Discussion
Issued by NWS Alaska-Pacific RFC

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AGAK78 PACR 292305
HMDACR

HYDROMETEOROLOGICAL DISCUSSION
NWS ALASKA PACIFIC RIVER FORECAST CENTER ANCHORAGE AK
3 PM AKDT FRI MAY 29 2015

...FLOOD POTENTIAL...

THERE ARE HIGH WATER LEVELS ON RIVERS DRAINING THE WOOD RIVER
MOUNTAINS OF SOUTHWEST ALASKA... SUCH AS THE NUYAKUK... NUSHAGAGK...
AND WOOD RIVER DUE TO RECENT RAIN.

WATER LEVELS ON THE SAG RIVER WILL RISE DUE TO RAIN IN THE BROOKS
RANGE LAST NIGHT AND THIS MORNING.  THE RIVER MAY REACH MINOR FLOOD
STAGE.

...HYDROMETEOROLOGICAL DISCUSSION...

THE UPPER LEVEL PATTERN THIS MORNING HAS A LARGE LOW IN THE
BERING...  A RIDGE FROM THE GULF TO THE NORTHWEST COAST AND
BEYOND... A SMALL LOW OVER THE EASTERN BROOKS RANGE... AND A TROUGH
OVER THE CANADIAN ARCHIPELAGO.  THE FRONT... AND ASSOCIATED RAIN...
FROM THE BERING LOW WILL BE NEARLY STATIONARY OVER THE SOUTHWEST
COAST TO JUST OFFSHORE OF THE WESTERN SEWARD PENINSULA AS THE LOW
WEAKENS AND ELONGATES INTO A TROUGH.  MEANWHILE THE RIDGE WILL
STRENGTHEN AND DEVELOP A HIGH IN THE ARCTIC.  THE LOW... AND
ASSOCIATED RAIN... OVER THE EASTERN BROOKS RANGE WILL MOVE EAST AND
MERGE WITH THE CANADIAN ARCHIPELAGO TROUGH.

...PRECIPITATION...

PRECIPITATION TOTALS OVER THE 24 HOURS ENDING AT 4 AM TODAY:
LOCATION NAME                 PE TS   24 HR
======== ====                 == ==   =====
OTKA2    OTUK CREEK AT IVOTUK PC RG :  1.30
TOOA2    IMNAVIAT CREEK       PC RM :  1.10
UNRA2    UPPER NUKA RIVER     PC RG :  0.81
SGRA2    SAGAVANIRKTOK RIVER  PC RG :  0.71
ATGA2    ATIGUN PASS SNOTEL   PC RM :  0.70
PACD     COLD BAY             PP RZ :  0.58
ARGA2    ATIGUN RIVER         PC RG :  0.40
BENA2    BEN CREEK            PC RG :  0.38
BIRA2    BIRCH CREEK RAWS     PC RG :  0.37
PCKA2    PREACHER CREEK RAWS  PC RG :  0.32
CRUA2    COLVILLE RIVER       PC RG :  0.31
NRUA2    NORUTAK LAKE RAWS    PC RG :  0.29
KANA2    KANUTI RIVER RAWS    PC RG :  0.28
UMTA2    UMIAT AIRFIELD       PC RG :  0.27

...LONG RANGE...

THE 6 TO 10 DAY TEMPERATURE OUTLOOK HAS INCREASED CHANCES OF ABOVE
NORMAL TEMPERATURES OVER MOST OF THE WESTERN THIRD OF THE MAINLAND.
THERE ARE INCREASED CHANCES OF BELOW NORMAL TEMPERATURES OVER THE
NORTHEAST MAINLAND AND THE EASTERN INTERIOR.

THE 6 TO 10 DAY PRECIPITATION OUTLOOK HAS INCREASED CHANCES FOR
BELOW NORMAL PRECIPITATION OVER THE NORTH SLOPE.  THERE ARE
INCREASED CHANCES FOR ABOVE NORMAL PRECIPITATION FROM THE AKPEN
ACROSS THE KENAI PENINSULA... THE NORTH GULF COAST... AND OVER
SOUTHEAST ALASKA.

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

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

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
$$

ACL


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