Hydrometeorological Discussion
Issued by NWS Alaska-Pacific RFC

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AGAK78 PACR 192229
HMDACR

HYDROMETEOROLOGICAL DISCUSSION
NWS ALASKA PACIFIC RIVER FORECAST CENTER ANCHORAGE AK
300 PM AKDT THU OCT 19 2017

...FLOOD POTENTIAL...

THE FLOOD POTENTIAL IS CURRENTLY LOW FOR THE ENTIRE STATE.

...HYDROMETEOROLOGICAL DISCUSSION....

AN UPPER LEVEL LOW CENTERED JUST OFFSHORE OF POINT HOPE AND
ASSOCIATED TROUGH EXTENDING SOUTHEAST ACROSS THE MAINLAND WILL
REMAIN RELATIVELY STATIONARY OVER THE NEXT 24 HOURS. A WESTERLY FLOW
WILL CONTINUE ACROSS THE NORTHERN GULF OF ALASKA BRINGING SHOWERS TO
SOUTHEAST PANHANDLE THROUGH FRIDAY. THE REMAINDER OF THE STATE WILL
BE RELATIVELY DRY.

LITTLE CHANGE IN OVERALL SYNOPTIC PATTERN WILL OCCUR THROUGH
SATURDAY AS THE LOW PRESSURE SYSTEM CENTERED OVER NORTHWEST ALASKA
GRADUALLY MOVES SOUTH. AN ASSOCIATED SHORTWAVE BEGINS TO FORM OVER
GULF OF ALASKA BRINGING ONSHORE FLOW AND SHOWERS TO THE EASTERN GULF
OF ALASKA AND THE SOUTHEAST PANHANDLE ON SATURDAY.  SNOW LEVELS
ALONG GULF OF ALASKA AND PANHANDLE WILL VARY BETWEEN 1000 AND 3000
FEET.

...PRECIPITATION...

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

LOCATION NAME                 PE TS   24 HR
======== ====                 == ==   =====
THOA2    THORNE BAY RAWS      PC RG :  1.76
META2    AK METLAKATLA 6S     PC R2 :  1.47
KPHA2    KETCHIKAN POWERHOUSE PP RZ :  1.46
PANT     ANNETTE AIRPORT      PP RZ :  1.44
HADA2    HAIDA RAWS           PP RG :  1.38
WLDA2    WHITMAN LAKE DAM     PP RZ :  1.35
SHLA2    SHELTER COVE RAWS    PC RG :  1.31
PAKT     KETCHIKAN AIRPORT    PP RZ :  1.07
KTAA2    KETCHIKAN 13N        PP RZ :  0.96
CRGA2    CRAIG WEATHER STATIO PP RG :  0.92
PAJC     CHIGNIK              PP RZ :  0.87
PAMM     METLAKATLA           PP RZ :  0.78
HONA2    HOONAH RAWS          PC RG :  0.72
PPAQ2    PINE PASS            PP RG :  0.67
KLOH1    KILOHANA             PC RG :  0.65
PAEL     ELFIN COVE           PP RZ :  0.64
CWEK     GREY ISLET, BC       PP RZ :  0.64
TSAQ2    TSAI CREEK NEAR SMIT PP RG :  0.63
KKEA2    KAKE RAWS            PC RG :  0.46
PAKW     KLAWOCK AIRPORT      PP RZ :  0.44

...LONG RANGE...

THE 6 TO 10 DAY TEMPERATURE OUTLOOK HAS INCREASED PROBABILITIES OF
BELOW NORMAL TEMPERATURES OVER THE WESTERN MAINLAND. NEAR NORMAL
TEMPERATURES OVER THE CENTRAL INTERIOR AND ABOVE NORMAL TEMPERATURES
ALONG THE GULF COAST AND SOUTHEAST PANHANDLE.

THE 6 TO 10 DAY PRECIPITATION OUTLOOK HAS INCREASED PROBABILITIES OF
ABOVE NORMAL PRECIPITATION OVER MUCH OF THE SOUTHERN MAINLAND AND
OVER SOUTHEAST ALASKA.  NEAR NORMAL PRECIPITATION IS LIKELY OVER THE
REST OF THE STATE.

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

$$
DPS



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