Flood in Matanuska Valley, Alaska

Flood July 19, 2022 – July 21, 2022 · Matanuska Valley, Alaska

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

Little Susitna River below Hatcher Pass Bridge peaked in action stage and was close to minor flood stage, as seen in hydrograph and data table. Data from this station's hydrograph were used to populate the verifying & peak times for this event.

Matanuska River at Old Glenn Hwy approached action stage, as seen in hydrograph and data table.

One of the emergency managers at Mat-SU EM had video of a flooded driveway but noted no other impacts had been observed.

The wider storm

After the two months of dry and sunny weather due to mostly upper level ridging in place across much of Alaska, the pattern flipped for the second half of the month to more of an upper level trough as the upper level ridge shifted to the east. This resulted in multiple storm systems moving into Southcentral with rounds of heavy rainfall that resulted in small streams and river rises in the area.

Began near Palmer (61.7103, -149.2297).

Source: NOAA Storm Events Database, event 1048252. Narratives are written by the National Weather Service forecast office that issued the report.

Tornadoes near your address

See every tornado that passed near a place you know, measured to its path.