117
FGAK78 PAFC 232153
ESFAFC
AKZ712-745>748-250000-

Hydrologic Outlook
National Weather Service Anchorage AK
153 PM AKDT Sun Aug 23 2026

...MULTIPLE ROUNDS OF SIGNIFICANT RAINFALL THIS WEEK WILL BRING RIVER
RISES AND LOCALIZED FLOOD POTENTIAL TO THE SUSITNA VALLEY...

Locations:

* Yentna and Skwentna River basins
* Rivers, creeks, and streams with headwaters along the western
  Talkeetna Mountains.

Timing:

* First Round - Late Monday Night through Wednesday Morning
* Second Round - Late Thursday Night through Saturday Evening

Rainfall:

* Widespread rainfall of 0.5 to 1.5 inches of rain is likely (70-80%)
  across the Susitna Valley late Monday Night through Wednesday
  morning. The highest amounts are very likely (80%-90%) to occur
  from Petersville east to Talkeetna and along the Talkeetna
  Mountains to Hatcher Pass.

* Additional widespread rainfall of 0.5 to 1.5 inches of rain is
  likely (60-70%) across the Susitna Valley late Thursday Night
  through Saturday evening. There is a low chance (20-30%) for
  rainfall amounts higher than 1.5" across far northern and western
  Susitna Valley.

* There is a chance (20-30%) of an additional 0.1 to 0.2 inches of
  rain with any lingering scattered showers Wednesday afternoon and
  evening.

Hydrologic Concerns:

* Expect sharp rises on many small streams and rivers, including the
  Yentna at Lake Creek.

* Many lower locations along rivers such as gravel bars and other
  spots popular for camping and recreating may become inundated with
  water with rivers reaching bankfull conditions.

* Heavy rain may result in localized ponding in low-lying areas and
  locations with poor drainage.

Next Steps:

* Residents along area streams as well as river users and recreators
  should anticipate higher than normal water levels and are advised
  to monitor weather and river forecasts.

* Send weather or flooding reports to inws.ncep.noaa.gov/report/ or
  by calling 1-907-266-5127.

* Reports on river conditions may be sent to the river forecast
  center by calling 1-907-266-5160.


$$