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Dangerous Heat Expands; Heavy Rainfall Threats; Fire Weather Concerns for the West

The heat will increase and expand across the Central Plains, Mississippi Valley, Southeast and into the Eastern U.S. through the week as high pressure builds across the eastern two-thirds of the country. On the northern periphery of this heat, the threat for severe thunderstorms and heavy rainfall across the northern Plains and upper Midwest through Tuesday. Critical Fire Weather for the west. Read More >

New Flood and Action Stage Changes for the Susitna River at the Parks Highway

and the Nuyakuk River near Dillingham

On April 18, 2021, the National Weather Service (NWS) Forecast Office in Anchorage, Alaska and the Alaska-Pacific River Forecast Center (APRFC) will be making stage changes on two different rivers in Southern Alaska.

Susitna River

An action stage for the Susitna River at Sunshine, which is where the Susitna River crosses the Parks Highway will be added. An action stage is the approximate level of bankfull flow, and is below minor flood stage. The minor and moderate flood stages remain unchanged.

For the Susitna River at Sunshine:

                                                          Action Stage           Minor Flood Stage           Moderate Flood Stage

                                     Previous       None                       24.5 feet                           27.5 feet

                                     New              21.0 feet                 24.5 feet                           27.5 feet

 

Nuyakuk River near Dillingham

There will be an action stage added, and a change for the flood stages for the Nuyakuk River near Dillingham. Flood stages were changed due to a flood frequency analysis as well as observations from previous flood events.

For the Nuyakuk River near Dillingham:

                                                         Action Stage             Minor Flood Stage

                                     Previous      None                         12.0 feet

                                     New             9.5 feet                      11.0 feet