Hydrometeorological Discussion
Issued by NWS Alaska-Pacific RFC

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000
AGAK78 PACR 252248
HMDACR

HYDROMETEOROLOGICAL DISCUSSION
NWS ALASKA PACIFIC RIVER FORECAST CENTER ANCHORAGE AK
300 PM AKDT TUE JUL 25 2017

...FLOOD POTENTIAL...

A SMALL STREAM FLOOD ADVISORY FOR RAPID RISES ON SMALL STREAMS
DRAINING THE NORTHWEST BROOKS RANGE HAS BEEN CANCELLED.

RECENT AND FORECAST RAIN MAY LEAD TO RAPID RISES/HIGH WATER ON
AFFECTED NORTHWESTERN BROOKS RANGE AND SEWARD PENINSULA STREAMS
THROUGH THE EARLY PART OF THE WEEK.

THE FLOOD POTENTIAL IS CURRENTLY LOW FOR THE REST OF ALASKA.

...HYDROMETEOROLOGICAL DISCUSSION....

THE 500 MB PATTERN THIS MORNING HAS A LOW IN THE EASTERN GULF...
RIDGES IN WESTERN CANADA AND OVER THE SOUTHERN BERING... A LOW
APPROACHING THE NORTHWEST MAINLAND... AND A TROUGH OVER THE
SOUTHWEST MAINLAND.

OVER THE NEXT COUPLE OF DAYS THE NORTHERN LOW WILL MOVE
SOUTHEASTWARD TO BE SOUTH OF KODIAK ISLAND... BRINGING SHOWERS AND
RAIN TO MUCH OF THE MAINLAND TODAY AND WEDNESDAY.  AS THE LOW MOVES
TO THE SOUTH... THE RIDGE IN THE BERING BUILDS OVER THE MAINLAND
LATE WEDNESDAY INTO THURSDAY.  WHILE THIS IS OCCURRING... THE GULF
LOW AND ASSOCIATED RAIN MOVES ACROSS SOUTHEAST ALASKA INTO WESTERN
CANADA.

...PRECIPITATION...

SELECTED 24 HOUR PRECIPITATION AMOUNTS ENDING AT 4 AM AKDT TODAY:

LOCATION NAME                 PE TS   24 HR
======== ====                 == ==   =====
SGNA2    SUSITNA GLACIER      PC RZ :  0.87
MTRA2    MT RYAN SNOTEL       PC R2 :  0.78
KILA2    KILBUCK RAWS         PC RG :  0.49
CHTA2    CHATANIKA RAWS       PC RG :  0.48
AGLA2    ANGEL CREEK RAWS     PC RG :  0.48
HOWA2    HOWARD PASS RAWS     PC RG :  0.45
WICA2    WICKERSHAM DOME      PC RG :  0.44
STUA2    STUART CREEK RAWS    PC RG :  0.42
PAFS     NIKOLAI              PP RZ :  0.42
HOGA2    HOGATZA RIVER RAWS   PC RG :  0.42
ARGA2    ATIGUN RIVER         PC RG :  0.42
PAPM     PLATINUM             PP RZ :  0.41
PABE     BETHEL               PP RZ :  0.41
NRDA2    NUYAKUK R            PC RG :  0.38
UCEA2    UPPER CHENA DOME     PC R2 :  0.37
GBDA2    GOODPASTER RIVER     PC RG :  0.36
TLDA2    TELIDA RAWS          PC RG :  0.35
IMYA2    IMELYAK NPS RAWS     PP RG :  0.34
IMYA2    IMELYAK NPS RAWS     PC RG :  0.34
FWLA2    FAREWELL FLATS RAWS  PC RG :  0.34
DCKA2    DAHL CREEK NR KOBUK  PC RG :  0.34
MSOA2    MUNSON RIDGE SNOTEL  PC R2 :  0.31
SRVA2    STONY RIVER RAWS     PC RG :  0.30
PAPT     PUNTILLA             PP RZ :  0.30
LMHA2    LAKE MINCHUMINA      PC RG :  0.30
MORA2    MORAINE              PC R2 :  0.26
WNLA2    WEIN LAKE RAWS       PC RG :  0.25
STNA2    STONY STRIP RAWS     PC RG :  0.25
PAMH     MINCHUMINA           PP RZ :  0.25

...LONG RANGE...

THE 6 TO 10 DAY TEMPERATURE OUTLOOK HAS INCREASED PROBABILITIES OF
ABOVE NORMAL TEMPERATURES OVER THE ENTIRE STATE.

THE 6 TO 10 DAY PRECIPITATION OUTLOOK HAS INCREASED PROBABILITIES OF
ABOVE NORMAL PRECIPITATION FROM THE Y-K DELTA NORTH OVER THE
NORTHWEST MAINLAND... THEN EAST ACROSS NORTHERN ALASKA AND SOUTH
ALONG THE ALCAN BORDER AND OVER SOUTHEAST ALASKA.

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

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

THIS TEXT PRODUCT WILL BE ISSUED DAILY UNTIL FREEZEUP IN THE FALL. A
GRAPHICAL VERSION OF THE HYDROMET DISCUSSION IS AVAILABLE AT
HTTP://WWW.WEATHER.GOV/APRFC/GRAPHICALHMD

$$
ACL


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