FloodZoneMap.org

Flood — Juneau Borough, AK

Jan 29, 2024

A strong storm force low pressure system over the North Pacific lifted north and moved into the Gulf of Alaska by the morning of January 29th. There was an associated atmospheric river along the warm side of the cold front that had a significant amount of sub-tropical moisture within it. Along with the the high anomalous moisture values, there was a very warm airmass with the atmospheric river which increased freezing levels across Southeast Alaska to more than 5000 feet. There was a deep snowpa

Source: NOAA National Weather Service Storm Events Database (event 1160769). Narrative written by NWS staff at the time of the event.

Flood Risk Context for Juneau Borough, AK

This event is one of many recorded floods in Juneau Borough County. See the full FEMA flood zone map, NFIP claim totals, and disaster history for the area.

View Juneau Borough County flood data →

More Flood Stories

Flood$5.9M damage

Juneau Borough, AK · Aug 12, 2025

Since 2011, Suicide Basin, a side valley that is dammed by the Mendenhall Glacier, fills with water from snowmelt and rainfall then drains during the summer as a glacial outburst flood.

Read the full account →
Flood$6.7M damage

Juneau Borough, AK · Aug 5, 2024

Since 2011, Suicide Basin, a side valley that is dammed by the Mendenhall Glacier, fills with water from snowmelt and rainfall then drains during the summer as a glacial outburst flood.

Read the full account →
Flood$7.0M damage

Juneau Borough, AK · Aug 5, 2023

Since 2011, Suicide Basin, a side valley that is dammed by the Mendenhall Glacier, fills with water from snowmelt and rainfall then drains during the summer as a glacial outburst flood.

Read the full account →
Flood$8.1M damage

Juneau Borough, AK · Dec 1, 2020

A large plume of concentrated moisture or Atmospheric River (AR) with an associated low-pressure system moved across the Pacific Ocean and transported tropical moisture from the southwest which impacted Southeast Alaska (SEAK) from December 1st through December 2nd.

Read the full account →