Precipitation Projections for Alaska Infrastructure

How might future changes in precipitation affect Alaska’s roads, bridges, and other infrastructure?

This tool compiles projected maximum precipitation events across Alaska.

Choose a location by clicking a map of Alaska, or enter coordinates for a specific spot. You can also choose a 20-year time span out to 2099.

The data used for the tool are based on NOAA Atlas 14 data that are downscaled to provide better regional (global-to-Alaska) precision.

Data downloads available.

Explore precipitation changes across Alaska

cars in heavy rain
Traffic negotiates heavy rain in Ketchikan. (photo: Carl Thompson)

Tool Details

Created by:

  • Scenarios Network for Alaska + Arctic Planning (SNAP)


  • Alaska Department of Transportation
  • National Weather Service Alaska Region
  • Neptune Inc.

Funded by:

  • Alaska Department of Transportation