702
WGAK68 PAFC 021356
FFAAFC

Flood Watch
National Weather Service Anchorage AK
556 AM AKDT Sat Aug 2 2025

AKZ711-713-714-030000-
/O.CON.PAFC.FA.A.0003.000000T0000Z-250804T2300Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Lower Matanuska Valley-Sutton / Upper Matanuska Valley-Eureka /
Tahneta Pass-
Including the cities of Eureka, Sutton, Lake Louise, Tahneta
Pass, Palmer, Wasilla, Chickaloon, and Big Lake
556 AM AKDT Sat Aug 2 2025

...FLOOD WATCH REMAINS IN EFFECT THROUGH MONDAY AFTERNOON...

* WHAT...Flooding caused by excessive rainfall continues to be
  possible.

* WHERE...The lower Matanuska River near Butte and Palmer as well as
  small rivers and streams between Sutton and Eureka.

* WHEN...Through Monday afternoon.

* IMPACTS...Heavy rainfall will lead to rapid runoff and rises in
  small streams draining the steep terrain along the Glenn Highway
  between Sutton and Eureka. Landslides are possible in
  landslide-prone areas along this corridor. Significant runoff is
  also expected to raise water levels on the Matanuska River, with
  some locations approaching bankfull by early Sunday morning. River
  levels may approach or even exceed those observed in early July,
  with increased bank erosion expected along the lower Matanuska
  River. While water levels may rise in small streams and rivers
  across the Matanuska-Susitna Valley, flooding is not expected west
  of the lower Matanuska River.

* ADDITIONAL DETAILS...
  - Rain will continue across the western Copper River Basin and
    northern Matanuska Valley Saturday morning through Sunday
    morning. As of 4 AM this morning, 1.00" to 1.25" inches of
    rain has already fallen across the area. An additional 0.50"
    to 1.00" of rain is possible through Sunday moring, with
    projected rainfall totals with this storm likely around 1 to
    2 inches from Mendeltna to Sutton. Precipitation will be
    enhanced near terrain and along the northeast facing slopes
    of the Talkeetna and Chugach mountains. The heaviest rainfall
    is expected within the mountainous terrain along the Glenn
    Highway corridor between Sutton and Eureka. Ponding of water
    on roadways and erosion of unpaved surfaces is also possible.

    As of 4 AM Saturday morning, the Matanuska River at Palmer
    (MATA2) is at 16800 cfs and is expected to crest Sunday
    morning at 25100 cfs, which is below minor flood stage (30000
    cfs).

  - Http://www.weather.gov/safety/flood

  - If you live near or along the Matanuska River, stay alert and be
  prepared to take action.
  - All residents on or near mountain slopes should be prepared for
  possible landslides.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Persons living along streams should stay alert and be prepared to
take action if a warning or advisory is issued, or flooding is
observed.

You should monitor later forecasts and be alert for possible Flood
Warnings. Those living in areas prone to flooding should be prepared
to take action should flooding develop.

Stay tuned to further developments by listening to your local radio,
television, or NOAA Weather Radio for further information.

&&

$$

Markle