952
NGAK88 PAFC 062056
HCMAFC
HYDROMETEOROLOGICAL COORDINATION MESSAGE
ALASKA-PACIFIC RIVER FORECAST CENTER
NATIONAL WEATHER SERVICE ANCHORAGE AK
1218 PM AKDT SAT SEP 6 2025
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CONTACT:
JOHNSE OSTMAN 907-266-5161 907-350-9219 (CELL PHONE AFTER 5 PM)
LOCATION/KNOWN FLOOD AREA (KFA)*: YENTNA/SKWENTNA RIVER REGIONS
PRODUCT TYPE: SITUATIONAL AWARENESS
EXPIRATION TIME: MON SEP 8 400 PM AKDT
PRIMARY CAUSE: HIGH WATER LEVELS AND HEAVY RAIN
BASIS: 1-3 INCHES OF RAIN IS EXPECTED IN THE HEADWATERS OF THE YENTNA AND SKWENTNA RIVERS FROM SATURDAY THROUGH MONDAY MORNING.
NEAR BANKFULL CONDITIONS CURRENTLY EXIST ON YENTNA AND SKWENTNA RIVERS. FLOOD POTENTIAL INCREASED.
HIGHER THAN NORMAL WATER LEVELS MAY RISE FURTHER AND WILL PERSIST THROUGH MONDAY.
RIVER FORECAST MODEL DOES NOT SHOW SIGNIFICANT WATER LEVEL INCREASES BUT IF QPE IS MORE THAN QPF RIVERS COULD GO INTO MINOR FLOOD QUICKLY.
IMPACTS:
...SIGNIFICANT RAINFALL THROUGH MONDAY MORNING WILL INCREASE THE FLOOD POTENTIAL IN THE YENTNA/SKWENTNA RIVER REGIONS...
RAINFALL
* 1-3 INCHES OF RAIN IS EXPECTED IN THE HEADWATERS OF THE YENTNA AND SKWENTNA RIVERS FROM SATURDAY THROUGH MONDAY MORNING.
HYDROLOGIC CONCERNS
* NEAR BANKFULL CONDITIONS CURRENTLY EXIST ON YENTNA AND SKWENTNA RIVERS. FLOOD POTENTIAL INCREASED WITH FORECASTED RAINFALL.
* HEAVY RAIN MAY RESULT IN LOCALIZED PONDING AND DELAYED INFILTRATION IN LOW-LYING AREAS AND ALREADY SATURATED TUNDRA.
NEXT STEPS
* RESIDENTS ALONG AREA STREAMS AS WELL AS RIVER USERS AND
RECREATIONISTS SHOULD ANTICIPATE HIGHER THAN NORMAL WATER LEVELS
AND ARE ADVISED TO MONITOR WEATHER AND RIVER FORECASTS.
* REPORTS ON RIVER CONDITIONS MAY BE SENT TO THE ALASKA-PACIFIC RIVER FORECAST
CENTER BY CALLING 1-800-847-1739 OR EMAIL TO NWS.AR.APRFC@NOAA.GOV.
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