060
FGAK78 PAFC 152320
ESFAFC
AKZ711-712-746-747-170000-

Hydrologic Outlook
National Weather Service Anchorage AK
320 PM AKDT Tue Sep 15 2026

...SIGNIFICANT RAINFALL THROUGH TOMORROW AFTERNOON FOR THE MATANUSKA
AND SUSITNA VALLEYS...

Locations:

* Willow and Talkeetna
* Rivers, creeks, and streams with headwaters along the western
  Talkeetna Mountains

Timing:

* Now through Wednesday (tomorrow) afternoon. Heaviest rainfall
  expected from now through about midnight tonight.

Rainfall:

* The heaviest rain is ongoing. However, an estimated 1.5 to 2 inches
  of rain have fallen along the Alaska Range and Talkeetna Mountains
  so far today, with about 0.5 to 1 inches in Susitna Valley.
* Additional rainfall amounts of about 0.5 to 1.5 inches are forecast
  from now through tomorrow afternoon.
* These rainfall totals likely won`t be high enough for widespread
  flooding, but smaller tributaries draining the Talkeetnas including
  Willow Creek and the Little Susitna may reach bankfull.

Hydrologic Concerns:

* 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.


$$