Hydrometeorological Discussion
Issued by NWS Alaska-Pacific RFC

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AGAK78 PACR 012254
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AGAK78 PACR DDHHMM
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HYDROMETEOROLOGICAL DISCUSSION
NWS ALASKA PACIFIC RIVER FORECAST CENTER ANCHORAGE AK
300 PM AKDT FRI AUG 1 2014

...FLOOD POTENTIAL...

RAINFALL TODAY INTO SATURDAY WILL CAUSE RISES ON THE CHENA...
SALCHA... GOODPASTER... AND CHATANIKA RIVERS... BUT FLOODING IS NOT
EXPECTED AT THIS TIME.

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

...HYDROMETEOROLOGICAL DISCUSSION...

THIS MORNING THE UPPER LEVEL PATTERN CONTINUES TO BE DOMINATED BY AN
OMEGA BLOCK... WITH A HIGH OVER THE BERING SEA... AND LOWS IN THE
SOUTHWESTERN GULF/NORTH PACIFIC AND BETWEEN THE KAMCHATKA PENINSULA
AND THE WESTERN ALEUTIANS.  OVER THE NEXT COUPLE OF DAYS THE TWO
LOWS OF THE OMEGA BLOCK WILL MOVE SLOWLY NORTHWARD AS THE RIDGE
WEAKENS SLIGHTLY.  A SMALL LOW NORTH OF BARROW WILL OPEN INTO A
TROUGH AS IT CONTINUES SOUTHEASTWARD TODAY BEFORE JOINING THE
CIRCULATION AROUND A LOW OVER THE CANADIAN ARCHIPELAGO.  THE TROUGH
AND FRONT FROM THIS LOW WILL BRING PRECIPITATION TO MUCH OF MAINLAND
FROM THURSDAY INTO EARLY SUNDAY.

FREEZING LEVELS THIS MORNING WERE BETWEEN 11100 AND 12600 FT ALONG
AND WEST OF A LINE FROM BETHEL TO MCGRATH TO KOTZEBUE... LOWERING TO
BETWEEN 8600 AND 9800 FT OVER THE REST OF THE MAINLAND.  FREEZING
LEVELS THEN ROSE TO 11700 FT OVER SOUTHERN SOUTHEAST.  OVER THE NEXT
COUPLE OF DAYS THE FREEZING LEVELS WILL NOT CHANGE MUCH OVER MOST OF
THE STATE.

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

LOCATION NAME                 PE TS    24 HR
======== ====                 == ==    =====
PABE     BETHEL               PP RZ :  0.58
PAMO     MOUNTAIN VILLAGE     PP RZ :  0.46
RDRA2    REINDEER RIVER RAWS  PC RG :  0.45
PALG     KALSKAG              PP RZ :  0.41
PAMC     MCGRATH              PP RZ :  0.32
PADM     MARSHALL             PP RZ :  0.32
DCKA2    DAHL CREEK NR KOBUK  PC RG :  0.30
PAOO     TOKSOOK BAY          PP RZ :  0.27
COTA2    COTTONWOOD LAKE RAWS PC RG :  0.27

...LONG RANGE...

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

THE 6 TO 10 DAY PRECIPITATION OUTLOOK HAS INCREASED CHANCES OF BELOW
NORMAL PRECIPITATION FOR THE NORTHERN HALF OF THE MAINLAND AND FOR
THE YUKON DELTA REGION.  THERE ARE INCREASED CHANCES OF ABOVE NORMAL
PRECIPITATION FROM THE AKPEN REGION ACROSS SOUTHCENTRAL... THE
SOUTHEAST MAINLAND... AND SOUTHEAST ALASKA.

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

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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