Hydrometeorological Discussion
Issued by NWS Alaska-Pacific RFC

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AGAK78 PACR 202217
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AGAK78 PACR DDHHMM
HMDACR

HYDROMETEOROLOGICAL DISCUSSION
NWS ALASKA PACIFIC RIVER FORECAST CENTER ANCHORAGE AK
300 PM AKDT WED AUG 20 2014

...FLOOD POTENTIAL...

THE FLOOD ADVISORY FOR THE KENAI RIVER FROM KENAI LAKE TO THE
MOUTH... AND FOR THE KASILOF RIVER AROUND TUSTAMENA LAKE... REMAINS
IN EFFECT UNTIL 1015 AM AKDT THURSDAY.

PLEASE REFER TO THE SPECIFIC PRODUCT FOR INFORMATION REGARDING THIS
EVENT.

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

...HYDROMETEOROLOGICAL DISCUSSION... THE UPPER LEVEL PATTERN ON
TUESDAY HAD A TROUGH CENTERED OVER THE WESTERN BERING WITH AN
EMBEDDED LOW NEAR THE WESTERN ALEUTIANS. A LINE OF SHORT WAVES
MARCHED ACROSS THE WEST CREATING DIURNAL SHOWERS ACROSS MUCH OF THE
STATE.

THE LARGE SCALE PATTERN WAS DOMINATED BY LARGE LOW OVER THE EASTERN
BERING AND A ACTIVE SUBTROPICAL JET EXTENDING FROM JAPAN TO THE WEST
COAST... WELL TO THE SOUTH OF THE STATE. MUCH SMALLER BUT AT THIS
POINT THE DOMINATE WEATHER PRODUCING ON WEDNESDAY WILL BE THE SHORT
WAVE ACTIVITY CROSS THE INTERIOR AND NORTHWEST. PULSES OF SHOWERS OF
UP TO A HALF INCH HAVE ALREADY BEEN RECORDED AS OF NOON. THERE WAS
ANOTHER SHORT WAVE IN THE GULF BUT IT LOOKS TO BE FALLING APART
BEFORE IT REACHES THE PANHANDLE.

IN THE LONGER RANGE... A NICE RIDGE FOR THIS TIME OF YEAR WILL BE
STRENGTHENING AS IT MIGRATES EAST FROM THE WEST COAST TO THE
PANHANDLE DURING THE REST OF THE WEEK. THE NEXT SIGNIFICANT SHORT
WAVE DOESN`T SHOW UP UNTIL FRIDAY EVENING OVER SOUTHCENTRAL.

FREEZING LEVELS THIS MORNING WERE BETWEEN 5000 FT AT NOME TO 7700 FT
AT ANCHORAGE OVER THE MAINLAND... RISING TO BETWEEN 8300 TO 9800
FEET OVER THE COASTAL LOCATIONS. FREEZING LEVELS WILL NOT CHANGE
MUCH OVER THE NEXT COUPLE OF DAYS.

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

LOCATION NAME                 PE TS    24 HR
======== ====                 == ==    =====
PADM     MARSHALL             PP RZ :   0.74
SGSA2    SKILAK GUARD STATION PP RG :   0.64
SEGA2    SOUTH FORK EAGLE RIV PC RP :   0.50
COVA2    COVILLE RAWS         PP RG :   0.46
KAIA2    KAIYUH FLATS RAWS    PP RG :   0.42
PAKV     KALTAG               PP RZ :   0.39
PABL     BUCKLAND             PP RZ :   0.36
SMTA2    SALMON TROUT RAWS    PP RG :   0.35
PMZA2    POINT MAC RAWS       PP RG :   0.32
AWRA2    HELMET MOUNTAIN RAWS PP RG :   0.31
WLVA2    WOLVERINE GLACIER NR PC R2 :   0.29
GDPA2    GOODPASTER RAWS      PP RG :   0.25
BKLA2    BUCKLAND UPLANDS RAW PP RG :   0.24
SGRA2    SAGAVANIRKTOK RIVER  PP RG :   0.22
IKPA2    IKPIKPUK RIVER BELOW PP RG :   0.22
FMRA2    FORTYMILE RIVER AT T PP RG :   0.22
SHKA2    SHAKTOOLIK RIVER RAW PP RG :   0.21
PARY     RUBY                 PP RZ :   0.21
JCKA2    JARVIS CREEK RAWS    PP RG :   0.21
FYRA2    FORT YUKON RAWS      PP RG :   0.21
BTAA2    BOLIO RAWS           PP RG :   0.21
PMKA2    POINT MACKENZIE      PC RM :   0.20
NUKA2    NUKA GLACIER SNOTEL  PC RM :   0.20
LRCA2    LITTLE RABBIT CREEK  PC RP :   0.20
LLKA2    LONG LAKE SNOTEL     PC RM :   0.20
FYNA2    FORT YUKON SNOTEL    PC RM :   0.20
COFA2    COLDFOOT SNOTEL      PC RM :   0.20
PMNA2    GALENA RAWS AT POORM PP RG :   0.19
LIVA2    LIVENGOOD RAWS       PP RG :   0.19

...LONG RANGE...

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

THE 6 TO 10 DAY PRECIPITATION OUTLOOK HAS INCREASED CHANCES OF ABOVE
NORMAL PRECIPITATION OVER THE NORTHERN THIRD OF SOUTHEAST ALASKA...
AND INCREASED CHANCES OF BELOW NORMAL PRECIPITATION OVER THE
SOUTHERN HALF OF SOUTHEAST ALASKA.

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

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

THIS HYDROMET DISCUSSION WILL BE ISSUED DAILY UNTIL FREEZE-UP BEGINS
IN THE FALL.

A GRAPHICAL VERSION OF THE HYDROMET DISCUSSION IS AVAILABLE AT
HTTP://APRFC.ARH.NOAA.GOV/PRODUCTS/GHMD.PHP

$$

ETH


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