Hydrometeorological Discussion
Issued by NWS Alaska-Pacific RFC

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AGAK78 PACR 032317
HMDACR

HYDROMETEOROLOGICAL DISCUSSION
NWS ALASKA PACIFIC RIVER FORECAST CENTER ANCHORAGE AK
300 PM AKDT TUE MAY 3 2016

...FLOOD POTENTIAL...

ON THE YUKON RIVER...THE RIVER CONTINUES TO DEVELOP OPEN AREAS ALONG
THE ENTIRE LENGTH. WHERE THE KOYUKUK AND TANANA RIVERS EMPTY INTO
THE YUKON... LONG STRETCHES OF OPEN WATER HAVE DEVELOPED. GOING BY
SATELLITE IMAGERY...THE LOWER YUKON BELOW HOLY CROSS IS NEARLY ALL
OPEN TO JUST SHY OF THE BERING SEA.

THE KOYUKUK RIVER IS MOSTLY OPEN ALONG ALMOST ITS ENTIRE LENGTH.
SOME OPEN AREAS ARE NOW VISIBLE ON SATELLITE ALONG THE PORCUPINE
RIVER... ESPECIALLY NEAR WHERE IT EMPTIES INTO THE YUKON.

FOR BREAKUP REPORTS AND FLOOD POTENTIAL... SEE THE BREAKUP SUMMARY
AT HTTP://APRFC.ARH.NOAA.GOV/DATA/MAPS/BRKUP_MAP.PHP (ALL LOWER CASE)

...HYDROMETEOROLOGICAL DISCUSSION...

THE UPPER LEVEL PATTERN TODAY HAS AN UPPER LOW MOVING FROM THE
WESTERN ALEUTIAN CHAIN TO THE WESTERN GULF BY THURSDAY. THIS LOW
WILL MERGE WITH ANOTHER LOW COMING UP FROM THE SOUTHWEST. THIS LOW
WILL USHER IN MOISTURE AND PRECIPITATION INTO THE PANHANDLE FOR
FRIDAY. THE HEAVIEST RAIN FOR TODAY AND WEDNESDAY WILL BE IN THE
PRINCE WILLIAM SOUND AREA. WITH UP TO AN INCH EACH DAY EXPECTED.
HEAVY RAIN WILL BEGIN THURSDAY NIGHT OVER THE PANHANDLE AND CONTINUE
INTO SATURDAY. UP TO 3 INCHES EXPECTED DURING THIS TIME PERIOD.

...PRECIPITATION...

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

LOCATION NAME                 PE TS   24 HR
======== ====                 == ==   =====
JDWA2    JUNEAU DOUGLAS WWTP  PP RZ :  1.73
CIAA2    CANYON ISLAND        PP RZ :  1.55
LLKA2    LONG LAKE SNOTEL     PC RM :  1.50
JTMA2    MT ROBERTS TRAM      PC RZ :  1.50
ECBA2    EAGLECREST BASE      PP RZ :  1.39
AUKA2    AUKE BAY LARC        PP RZ :  1.39
PTBA2    POINT BAKER          PP RZ :  1.36
PAPG     PETERSBURG           PP RZ :  1.34
SNEA2    SNETTISHAM POWER STA PC RZ :  1.31
JOPA2    JUNEAU OUTER POINT   PP RZ :  1.30
HOOA2    HOONAH               PP RZ :  1.29
JDTA2    JUNEAU DOWNTOWN LARC PC RP :  1.25
ECEA2    EAGLECREST TOP CWOP  PP RZ :  1.21
PAEL     ELFIN COVE           PP RZ :  1.20
SLKA2    SELAWIK 28E CRN      PP RG :  1.14
MNDA2    MENDENHALL LAKE LEVE PC RG :  1.14
PAJK     JUNEAU WFO           PP RZ :  1.13
SPPA2    SNETTISHAM POWER PLA PP RZ :  1.08
HATA2    HATCHER PASS         PC RM :  1.00
PPSA2    POWDER PATCH STATION PC RZ :  0.99
MHPA2    MITKOF HWY PETERSBUR PP RZ :  0.93
PAJN     JUNEAU               PP RZ :  0.92
GBDA2    GOODPASTER RIVER NR  PP RG :  0.91
SRYA2    SITUK RIVER NR YAKUT PC RG :  0.81
KLWA2    HOLLIS               PP RZ :  0.77
HADA2    HAIDA RAWS           PC RG :  0.77
BKSA2    BLAIR LAKES RAWS     PC RG :  0.75
PAYA     YAKUTAT              PP RZ :  0.73

...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 OVER THE FAR WESTERN PART OF THE STATE...
INCLUDING THE ALEUTIAN CHAIN. INCREASED PROBABILITIES OF BELOW
NORMAL PRECIPITATION 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://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
$$

KFM



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