Hydrometeorological Discussion
Issued by NWS Alaska-Pacific RFC

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AGAK78 PACR 042243
HMDACR

HYDROMETEOROLOGICAL DISCUSSION
NWS ALASKA PACIFIC RIVER FORECAST CENTER ANCHORAGE AK
300 PM AKDT TUE AUG 4 2015

...FLOOD POTENTIAL...

FLOOD POTENTIAL IS CURRENTLY LOW ACROSS THE STATE.

...HYDROMETEOROLOGICAL DISCUSSION...

THE UPPER LEVEL PATTERN THIS MORNING HAS THE NORTHERN LOW WELL NORTH-
NORTHEAST OF THE ALCAN BORDER... WITH A TROUGH CURRENTLY BACK
TOWARDS THE BERING STRAIT ROTATING AROUND IT... AND OTHER LOWS OVER
SOUTHERN SOUTHEAST ALASKA/BRITISH COLUMBIA... SOUTH OF THE
AKPEN...AND EAST OF THE SOUTHERN KAMCHATKA PENINSULA.  HIGH PRESSURE
COVERS THE INTERIOR AND SOUTHERN MAINLAND AND EXTENDS INTO CENTRAL
CANADA.  THERE IS ALSO A NORTHWEST-SOUTHEAST RIDGE IN THE CENTRAL
AND WESTERN BERING.

THE LOW OVER SOUTHEAST/BRITISH COLUMBIA WILL MOVE SLOWLY
SOUTHEASTWARD... BRINGING RAIN TO PORTIONS OF SOUTHEAST INTO LATE
TODAY.  THE LOW SOUTH OF THE EASTERN ALEUTIANS WILL MOVE SLOWLY
NORTHEASTWARD... BRINGING RAIN TO THE SOUTHERN AKPEN AND SOUTHERN
KODIAK ISLAND.  THE TROUGH ROTATING AROUND THE NORTHERN LOW WILL
MOVE INTO THE NORTHWEST MAINLAND TONIGHT AND WILL BEGIN TO MERGE
WITH THE LOW SOUTH OF THE AKPEN.  THIS WILL SPLIT THE HIGH AND BRING
WIDESPREAD RAIN BACK TO THE MAINLAND FOR WEDNESDAY AND THURSDAY.

...PRECIPITATION...

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

LOCATION NAME                 PE TS   24 HR
======== ====                 == ==   =====
PANT     ANNETTE              PP RZ :  0.48
PAVC     KING COVE            PP RZ :  0.47
PACD     COLD BAY             PP RZ :  0.40
PAKT     KETCHIKAN            PP RZ :  0.39
PASC     DEADHORSE            PP RZ :  0.32
PAQT     NUIQSUT              PP RZ :  0.32
MDEA2    MEADE RIVER          PC RG :  0.31
CKLA2    CAPE KIAVAK RAWS     PC RG :  0.31
SHLA2    SHELTER COVE RAWS    PC RG :  0.30
SOUA2    SOULE RIVER          PC RG :  0.20

...LONG RANGE...

THE 6 TO 10 DAY TEMPERATURE OUTLOOK HAS INCREASED PROBABILITIES OF
ABOVE NORMAL TEMPERATURES FROM THE AKPEN ACROSS THE KENAI
PENINSULA... THE NORTH GULF COAST... AND SOUTHEAST ALASKA.  THERE
ARE INCREASED PROBABILITIES OF BELOW NORMAL TEMPERATURES OVER THE
NORTH SLOPE.

THE 6 TO 10 DAY PRECIPITATION OUTLOOK HAS INCREASED PROBABILITIES OF
BELOW NORMAL PRECIPITATION OVER MUCH OF THE FAR WESTERN MAINLAND...
AND INCREASED CHANCES OF ABOVE NORMAL PRECIPITATION FOR THE
NORTHEAST MAINLAND... EASTERN INTERIOR... SOUTHCENTRAL AND SOUTHEAST
MAINLAND... AND 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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