Software Upgrade will Impact NOAA Weather Radio Broadcasts across the Northland April 29 to May 1

Public Information Statement
National Weather Service Duluth MN
1224 PM CDT Fri Apr 25 2025

...SOFTWARE UPGRADE WILL IMPACT NOAA WEATHER RADIO BROADCASTS
ACROSS THE NORTHLAND NEXT WEEK...

The National Weather Service Forecast Office in Duluth, MN will
be conducting a required, scheduled update to their Advanced
Weather Interactive Processing System from 8:00 AM Tuesday April
29th through the afternoon of Thursday May 1st. The NWS uses this
computer system to display and integrate weather and water
information, and to send life-saving information, such as weather
and water warnings, to the public.

During the time of the update, forecast operations will be
conducted by back-up offices in Minneapolis, Minnesota and La
Crosse, Wisconsin to minimize any potential interruption to
services. No impacts to our core services of forecast products and
weather watches, warnings and advisories are expected during this
period. The KDLH WSR-88D Radar will continue to operate and
disseminate radar data as normal. However, limited impacts will
occur to the following services:

NOAA Weather Transmitters: All NOAA Weather Radio transmitters
served by the National Weather Service in Duluth across northeast
Minnesota and northwest Wisconsin will be off air through the time
of the install. This includes the following transmitters in
Minnesota: KIG64 Duluth, KXI43 Grand Marais, KXI44 Ely, KXI45 Gun
Flint Lake, KZZ29 Coleraine, KZZ44 Elephant Lake, KZZ45 Virginia,
KZZ84 Aitkin, WNG630 Finland, WNG678 Pine City, WXJ64 Leader, and
WXK45 International Falls. This also includes the following
transmitters in Wisconsin: KZZ78 Ashland, KZZ79 Spooner, and WXM91
Park Falls.

The forecast office in Duluth will remain open and staffed
throughout this software outage period for phone calls and to
provide weather support to partners. Repeating, this NOAA Weather
Radio outage will occur from 8:00 AM Tuesday April 29th through
the afternoon of Thursday May 1st.

For questions regarding this outage, please contact NWS Duluth at
218-729-6697 or email nws.duluth@noaa.gov.