Mendenhall Lake Flood Stage Notice

News Headlines

Due to a mandatory system upgrade at the Juneau National Weather Service Forecast Office, an extended NOAA Weather Radio outage is expected. The system outage is scheduled for May 27 to 29, 2025. For more information, click here.
For SE, drier weather with some clearing as a ridge builds over the panhandle. But this pattern is short-lived as the ridge is quickly broken down as the next low approaches, giving more rain and wind. Click here for the latest forecast discussion.
Want to know more about the new inundation maps for the Mendenhall Valley, click here for a video with experts who helped with the development of them and how they will be used by other agencies.
On May 25th, 2025 there will be changes to the river forecast services for the Alsek River near Yakutat, Salmon River near Gustavus, and Falls Creek near Petersburg. Click here to see the Public Info Statement regarding these changes.

Public Information Statement
Issued by NWS

000
NOAK47 PAJK 301843
PNSAJK
AKZ025-011845-

Service Change Notice
National Weather Service Juneau AK
1043 AM AKDT TUE AUG 30 2016

TO:       Family Of Services /FOS/ Subscribers...NOAA Weather
          Wire Service /NWWS/ Subscribers...Emergency Managers
          Weather Information Network /EMWIN/ Subscribers...
          Other National Weather Service /NWS/ Customers and
          Partners...Other News Media and NWS Employees

FROM:     Tom Ainsworth
          Meteorologist in Charge
          Weather Forecast Office Juneau AK

SUBJECT:  Major Flood Stage Set For Mendenhall Lake in Juneau
          /MNDA2/.

Effective on September 29th 2016...the National Weather Service
in Juneau will add a major flood stage for the Mendenhall Lake
gage.

If the lake water level reaches major flood stage /14.0 feet/
widespread flooding would affect many homes along the Mendenhall
River above and below back loop bridge.

The National Weather Service definitions for flood terms are
available on the web at: HTTP://WEATHER.GOV/APRFC/TERMINOLOGY

Values in the following table are newly established values.

                                       Flood stages /in feet/

          RIVER               STATUS BANKFULL ACTION MINOR MODERATE MAJOR
.....................................................................
SOUTHEAST ALASKA
  MNDA2 MENDENHALL LAKE         NEW    *        *       *     *      14.0


* Value did not change for this location


Please note that the major flood stage is subject to change in the future. The
National Weather Service in Juneau will continue to monitor impacts of high
water and will make appropriate changes if necessary.

The National Weather Service in Juneau welcomes public feedback. If you have
any questions or comments on this change...please contact:

Aaron Jacobs
Senior Service Hydrologist
National Weather Service Juneau Alaska
EMAIL: aaron.jacobs at noaa.gov
PHONE: 907-790-6821

end
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ABJ

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