Hydrometeorological Discussion
Issued by NWS Alaska-Pacific RFC

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
000
AGAK78 PACR 222354
HMDACR

HYDROMETEOROLOGICAL DISCUSSION
NWS ALASKA PACIFIC RIVER FORECAST CENTER ANCHORAGE AK
300 PM AKDT FRI MAY 22 2015

...FLOOD POTENTIAL...

A FLOOD WARNING IS IN EFFECT FOR FORT YUKON ON THE PORCUPINE RIVER.
A FLOOD WATCH IS IN EFFECT FOR THE REST OF PORCUPINE RIVER...UP TO
THE CANADIAN BORDER. VERY WARM TEMPERATURES HAVE DRAMATICALLY
INCREASED SNOW MELT...RESULTING IN BANKFULL OR OVER BANKFULL
CONDITIONS.

YUKON RIVER... HIGH WATER CONTINUES FOR ALAKANUK AND EMMONAK... AND
WATER LEVELS REMAIN STEADY. SATELLITE IMAGES CONTINUE TO DEPICT SOME
ICE REMAINING IN THE DELTA REGION. THE REST OF THE YUKON RIVER IS
OPEN.

WATER IS FLOWING OVER PORTIONS OF THE DALTON HIGHWAY BETWEEN
MILEPOSTS 394 AND THE DEADHORSE AIRPORT. A FLOOD WARNING HAS BEEN
ISSUED FOR THE NEXT SEVERAL DAYS... WITH TEMPERATURES EXPECTED TO
CONTINUE TO BE VERY WARM AND WELL ABOVE NORMAL.

ON THE NOATAK RIVER A FLOOD ADVISORY HAS BEEN ISSUED FOR MINOR
FLOODING OF THE LOW LYING AREAS DOWNSTREAM OF NOATAK. THERE HAVE
BEEN REPORTS OF A COUPLE OF CABINS THAT HAVE WATER IN THEM.

THE FLOOD WATCH HAS BEEN UPGRADED TO AN ADVISORY FOR THE COLVILLE
AND KUPARUK RIVERS FOR MINOR FLOODING. THE OBSERVER AT COLVILLE
RIVER REPORTS THAT WATER HAS RISEN TO ABOVE MODERATE STAGE AND STILL
GOING UP. ON THE KUPARUK... 3 LOW WATER CROSSING ARE INUNDATED WITH
WATER AND MAKING TRAVEL ALONG THE SPINE ROAD DIFFICULT.

PLEASE NOTE THAT EVEN THOUGH A RIVER REACH MAY BE LABELED OPEN OR
MOSTLY OPEN... IT IS STILL POSSIBLE FOR ICE RUNS FROM UPSTREAM TO
PASS THROUGH THESE REACHES AND MAKE TRAVEL UNSAFE.

FOR MORE UP-TO-DATE BREAKUP INFORMATION... PLEASE VISIT:
HTTP://APRFC.ARH.NOAA.GOV/DATA/MAPS/BRKUP_MAP.PHP. AND PLEASE REFER
TO THE WATCH... WARNING... AND ADVISORY PRODUCTS FOR MORE
INFORMATION.

...HYDROMETEOROLOGICAL DISCUSSION...

A STRONG UPPER LEVEL RIDGE REMAINS ENTRENCHED OVER THE EASTERN GULF
STRETCHING NORTHWARD INTO THE YUKON TERRITORY AND EASTERN ALASKA.
WAY OUT IN THE WESTERN BERING SEA.. A LOW WITH MOISTURE FROM THE
REMNANTS OF TYPHOON DOLPHIN IS TRACKING EAST. THIS SYSTEM CAUSES THE
RIDGE TO SHIFT SLIGHTLY EAST AND OPEN UP SOUTHCENTRAL TO GREATER
CHANCES OF PRECIPITATION WITH THE PASSAGE OF A FRONTAL SYSTEM
SATURDAY NIGHT. THIS IS ESPECIALLY TRUE FOR THE EASTERN KENAI AND
PRINCE WILLIAM SOUND.

...PRECIPITATION...

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

LOCATION NAME                 PE TS   24 HR
======== ====                 == ==   =====
PMNA2    GALENA RAWS AT POORM PC RG :   0.24
IMYA2    IMELYAK RAWS         PP RG :   0.23
IGKA2    INIGOK AIRFIELD RAWS PP RG :   0.23
WRYA2    WEARY LAKE           PC RM :   0.20
RHOA2    RHOADS CREEK         PC RM :   0.20
DCKA2    DAHL CREEK NR KOBUK  PP RG :   0.20
PAFM     AMBLER               PP RZ :   0.19
NRDA2    NUYAKUK R NR DILLING PP RG :   0.19
PAGH     SHUNGNAK AIRPORT     PP RZ :   0.18
SSIA2    SISIAK               PP RG :   0.17
SRKA2    SQUIRREL RIVER RAWS  PP RG :   0.17
CKLA2    CAPE KIAVAK RAWS     PC RG :   0.17

...LONG RANGE...

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

THE 6 TO 10 DAY PRECIPITATION OUTLOOK HAS INCREASED CHANCES FOR BELOW NORMAL
PRECIPITATION OVER MOST OF SOUTHEASTERN MAINLAND AND THE PANHANDLE
OF ALASKA.

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

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

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
$$

ETH



USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.