Hydrometeorological Discussion
Issued by NWS Alaska-Pacific RFC

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AGAK78 PACR 302243
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AGAK78 PACR DDHHMM
HMDACR

HYDROMETEOROLOGICAL DISCUSSION
NWS ALASKA PACIFIC RIVER FORECAST CENTER ANCHORAGE AK
300 PM AKDT WED JUL 30 2014

...FLOOD POTENTIAL...

FLOOD POTENTIAL IS CURRENTLY LOW FOR THE STATE.

...HYDROMETEOROLOGICAL DISCUSSION...

THIS MORNING THE UPPER LEVEL PATTERN IS DOMINATED BY AN OMEGA
BLOCK... WITH A RIDGE OVER THE CENTRAL ALEUTIANS... BERING SEA...
AND THE WESTERN MAINLAND AND LOWS IN THE GULF AND SOUTHWEST OF THE
WESTERN ALEUTIANS.  OVER THE NEXT COUPLE OF DAYS THE OMEGA BLOCK
WILL SHIFT VERY SLOWLY WESTWARD AS A LOW WEST OF WRANGEL ISLAND
MOVES EAST OVER THE TOP OF THE RIDGE TO BE NORTH OF BARROW BY FRIDAY
MORNING.  THIS LOW WILL BRING PRECIPITATION TO MUCH OF NORTHERN AND
WESTERN ALASKA FROM THURSDAY INTO THE WEEKEND.

FREEZING LEVELS ON WEDNESDAY MORNING WERE AT THE SURFACE AT
BARROW... BUT ROSE QUICKLY TO BETWEEN 8200 AND 11900 FT OVER THE
WESTERN HALF OF THE MAINLAND AND TO BETWEEN 6300 AND 7300 FT OVER
THE EASTERN MAINLAND AND SOUTHEAST ALASKA.  OVER THE NEXT COUPLE OF
DAYS THE FREEZING LEVELS WILL RISE OVER THE EASTERN MAINLAND AND
SOUTHEAST ALASKA.

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

LOCATION NAME                 PE TS    24 HR
======== ====                 == ==    =====
KKEA2    KAKE RAWS            PC RG :  1.28
ZMBA2    ZAREMBO ISLAND SOUTH PC RG :  1.24
SHLA2    SHELTER COVE RAWS    PC RG :  1.03
LLKA2    LONG LAKE SNOTEL     PC RM :  1.00
AUKA2    AUKE BAY LARC        PC RP :  0.80
THOA2    THORNE BAY RAWS      PC RG :  0.76
PACV     CORDOVA              PP RZ :  0.76
MCAA2    MONTANA CREEK        PC RG :  0.72
PAJK     JUNEAU WFO           PC RZ :  0.68
PAKT     KETCHIKAN            PP RZ :  0.63
PAJN     JUNEAU               PP RZ :  0.61
PAKW     KLAWOCK              PP RZ :  0.52
NINA2    NINILCHIK RIVER      PP RV :  0.50
HONA2    HOONAH RAWS          PC RG :  0.50
TKUA2    TAKU RIVER NR JUNEAU PC RG :  0.48
TETA2    JATAHMUND LAKE RAWS  PC RG :  0.48
PAHO     HOMER                PP RZ :  0.48
PASI     SITKA                PP RZ :  0.44
PAOR     NORTHWAY AIRPORT     PP RZ :  0.39
PANT     ANNETTE              PP RZ :  0.32
SOUA2    SOULE RIVER          PC RG :  0.30
MDBA2    COPPER RIVER         PC RG :  0.30
BLTA2    BARTLETT COVE        PC RG :  0.30
ALEA2    ALSEK RIVER          PC RG :  0.30
ALHA2    ALCAN HWY MI-1244    PC RG :  0.26

...LONG RANGE...

THE 6 TO 10 DAY TEMPERATURE OUTLOOK HAS INCREASED CHANCES OF ABOVE
NORMAL TEMPERATURES ACROSS MOST OF THE STATE... THE EXCEPTION IS A
PORTION OF THE SOUTHEAST MAINLAND AND NORTHERN SOUTHEAST WHERE THE
OUTLOOK IS FOR NEAR NORMAL TEMPERATURES.

THE 6 TO 10 DAY PRECIPITATION OUTLOOK HAS INCREASED CHANCES OF BELOW
NORMAL PRECIPITATION WEST OF A LINE FROM THE KUSKOKWIM DELTA TO
DEADHORSE... AND INCREASED CHANCES OF ABOVE NORMAL PRECIPITATION
OVER THE SOUTHCENTRAL AND SOUTHEAST MAINLAND.

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

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

$$

ACL



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