Hydrometeorological Discussion
Issued by NWS Alaska-Pacific RFC

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AGAK78 PACR 242244
HMDACR

HYDROMETEOROLOGICAL DISCUSSION
NWS ALASKA PACIFIC RIVER FORECAST CENTER ANCHORAGE AK
300 PM AKDT WED AUG 24 2016

...FLOOD POTENTIAL...

SEVERAL DAYS OF RAINFALL FOR THE WESTERN SUSITNA RIVER VALLEY...
WHICH INCLUDES THE YENTNA...SKWENTNA AND CHULITNA RIVERS... HAS
RESULTED IN HIGH WATER LEVELS. SOME LOCAL MINOR FLOODING IS
POSSIBLE. REFER TO THE LATEST FLOOD ADVISORY FOR MORE INFORMATION.

OCCASIONAL HEAVY RAINS OVER THE EASTERN KENAI PENINSULA HAS CAUSED
HIGH WATER LEVELS ON RIVER AND STREAMS. WATER LEVELS REMAIN ABOVE
ACTION STAGE FOR THE RESURRECTION RIVER NEAR SEWARD. NO REPORTS OF
FLOODING HAVE BEEN RECEIVED.

HEAVY RAINS WILL BE MOVING INTO THE NORTH GULF COAST OVER THE NEXT
COUPLE OF DAYS. WATER LEVELS WILL BE CLIMBING SIGNIFICANTLY THERE AS
WELL.

OTHERWISE... THE FLOOD POTENTIAL IS LOW FOR THE REST OF THE STATE.

...HYDROMETEOROLOGICAL DISCUSSION...

AN ELONGATED TROUGH STRETCHING FROM THE CENTRAL BERING SEA WELL INTO
THE CENTRAL NORTH PACIFIC AND A RIDGE TO THE EAST OVER THE
NORTHEASTERN PACIFIC WILL KEEP FETCH OF MOISTURE STREAMING INTO
SOUTHCENTRAL ALASKA. PRECIPITABLE WATER VALUES ARE WELL ABOVE NORMAL
ACROSS THE SOUTHERN MAINLAND AND NORTHEAST GULF AND RANGE AROUND AND
INCH. THE HEAVIEST RAIN WILL BE OVER PRINCE WILLIAM SOUND  AND NORTH
GULF COAST WITH 3 INCHES OR MORE POSSIBLE ON WEDNESDAY AND NEARLY
THE SAME ON THURSDAY.

IN THE LONGER RANGE, THE LAST WAVE OF ENERGY SLIPS THROUGH
SOUTHCENTRAL THURSDAY NIGHT LEAVING BEHIND THAT A RIDGE OF HIGH
PRESSURE THAT SEEMS TO LAST THROUGH THE WEEKEND AND BEGIN TO DRY
THINGS OUT OVER SOUTHERN MAINLAND. AT THE SAME TIME THIS WAVE
BRINGS BRIEF SHOT OF RAIN TO THE NORTHERN PANHANDLE.

...PRECIPITATION...

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

LOCATION NAME                 PE TS   24 HR
======== ====                 == ==   =====
CBHA2    CORDOVA BOAT HARBOR  PC RP :   2.96
PAWR     WHITTIER             PP RZ :   2.79
EYKA2    MT EYAK              PC RM :   2.10
SAWA2    SPEEL ARM STATION 4- PC RZ :   1.93
PPSA2    POWDER PATCH STATION PC RZ :   1.41
TKVA2    TOKOSITNA VALLEY     PC R2 :   1.31
HRDA2    HARDING ICE FIELD    PC RG :   1.29
PEDA2    PEDERSEN LAGOON      PP RG :   1.17
ECEA2    EAGLECREST TOP CWOP  PP RZ :   1.11
PAJC     CHIGNIK              PP RZ :   1.05
LLKA2    LONG LAKE SNOTEL     PC RM :   1.00
SNEA2    SNETTISHAM POWER STA PC RZ :   0.97
EXGA2    EXIT GLACIER         PC R2 :   0.88
MCPA2    MCARTHUR PASS        PP RG :   0.87
TTKA2    TATITLEK             PC RM :   0.80
EXGA2    EXIT GLACIER         PC RM :   0.80
SLKA2    SELAWIK 28E CRN      PC RG :   0.79
RESA2    RESURRECTION RIVER A PP RG :   0.75
SCSA2    SAWMILL CREEK NEAR S PP RG :   0.73
SDIA2    SOUTH DOUGLAS        PC RZ :   0.71
SLKA2    SELAWIK 28E CRN      PC R4 :   0.70
PSJA2    PORT SAN JUAN        PC R2 :   0.70
GROA2    GROUSE CREEK NR SEWA PP RG :   0.67
SRWA2    SALMON RIVER RAWS    PP RG :   0.66
PAVC     KING COVE            PP RZ :   0.65
MNDA2    MENDENHALL LAKE LEVE PP RG :   0.63

...LONG RANGE...

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

THE 6 TO 10 DAY PRECIPITATION OUTLOOK HAS INCREASED PROBABILITIES OF
BELOW NORMAL PRECIPITATION OVER PRETTY MUCH THE ENTIRE STATE
EXCEPT THE ALEUTIANS.

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

$$



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