Public Information Statement
Issued by NWS Juneau, AK
Issued by NWS Juneau, AK
042
NOAK47 PAJK 291941
PNSAJK
Service Change Notice National Weather Service Juneau AK 425 PM AKDT
Fri Apr 25 2025
AKZ317-261230-City and Borough of Yakutat-425 PM AKDT Fri Apr 25 2025
To: Family of Services/FOS/ Subscribers...NOAA Weather Wire
Service /NWWS/ Subscribers...Emergency Managers Weather Information
Network /EMWIN/ Subscribers...NOAAPORT Subscribers...National
Weather Service /NWS/ Partners And Other Users...and NWS Employees
From: Aaron Jacobs Senior Service Hydrologist NWS
Juneau AK
Subject: Suspension of River Forecast Service For:
Alsek River at Dry Bay near Yakutat Alaska and other
forecast points in Canada
On Sunday May 25, 2025, NOAA`s National Weather Service /NWS/ Office
in Juneau, AK will suspend River Forecast Service for multiple
locations in its service area:
The Alsek River at Dry Bay near Yakutat along with all other
upstream locations in Canada.
The suspension of service in the Alsek basin is due to two reasons,
one being limited precipitation information to improve the
calibration of the hydrologic model. The second is that there have
been substantial changes in the river basin area from glacier
changes upstream in Canada. This is affecting the total amount of
water flowing through the Alsek River system, which in turn is
affecting the calibration of the hydrological model output.
On May 25th 2025, NWS Juneau will issue the last river forecast for
the following NWS Location Identifier /NWSLI/ ALEA2 and the
following Canadian locations ALSQ2, DEZQ9, TATQ9.
If you have any questions or comments on this new service, please
contact:
Aaron Jacobs, Senior Service Hydrologist National Weather Service
Forecast Office Juneau AK 8500 Mendenhall Loop Rd Juneau, AK 99801
$$
AKZ320-261230-Glacier Bay-425 PM AKDT Fri Apr 25 2025
To: Family of Services/FOS/ Subscribers...NOAA Weather Wire
Service /NWWS/ Subscribers...Emergency Managers Weather Information
Network /EMWIN/ Subscribers...NOAAPORT Subscribers...National
Weather Service /NWS/ Partners And Other Users...and NWS
Employees
From: Aaron Jacobs Senior Service Hydrologist NWS
Juneau AK
Subject: New Forecast Service For:
Salmon River At Gustavus, AK
Beginning on Sunday, May 25, 2025, NOAA`s National Weather Service
/NWS/ Office in Juneau, AK will begin a new River Forecast Service
for the Salmon River At Gustavus, Alaska
The new service at this location is a direct result of active model
calibration from the Alaska Pacific River Forecast Center and will
improve hydrologic services to the community of Gustavus. The new
forecast service will not only provide flooding forecasts for areas
near the Salmon River, but it will also assist recreational decision
support services in the entire Gustavus area.
On May 25th, NWS Juneau will begin to issue hydrologic products as
necessary that may include specific river forecasts. The hydrologic
products are listed in the following table:
PRODUCT TYPE WMO HEADER PRODUCT IDENTIFIER
HYDROLOGIC OUTLOOK FGAK77 PAJK JNUESFAJK FLOOD
WATCH WGAK67 PAJK JNUFFAAJK FLOOD
WARNING WGAK47 PAJK JNUFLWAJK FLOOD
STATEMENT WGAK87 PAJK JNUFLSAJK
The NWS defines Flood Stage as the river level at which impacts to
life and/or property begin.
For Salmon River, minor flood Stage is 15.5 feet and moderate flood
level is 16.5 feet. Flood Advisories will be issued when water
levels are expected to reach or exceed 15.5 feet. Flood Warnings
will be issued when water levels are expected to reach or exceed the
moderate flood stage level of 16.5 feet.
Since the automated equipment was installed in May of 2014, the
highest water level recorded has been 17.26 feet on December 2nd,
2020.
The NWS Location Identifier /NWSLI/ for this location is SAMA2.
In addition to the text information detailed above, graphical
depictions of river levels and forecasts are also available on our
website. This can be found under the "Rivers and Lakes" option on
the main NWS Juneau web page at: www.weather.gov/Juneau
If you have any questions or comments on this new service, please
contact:
Aaron Jacobs, Senior Service Hydrologist National Weather Service
Forecast Office Juneau AK 8500 Mendenhall Loop Rd Juneau, AK 99801
$$
AKZ326-261230-Petersburg Borough-425 PM AKDT Fri Apr 25 2025
To: Family of Services/FOS/ Subscribers...NOAA Weather Wire
Service /NWWS/ Subscribers...Emergency Managers Weather Information
Network /EMWIN/ Subscribers...NOAAPORT Subscribers...National
Weather Service /NWS/ Partners And Other Users...and NWS
Employees
From: Aaron Jacobs Senior Service Hydrologist NWS
Juneau AK
Subject: New Forecast Service For:
Falls Creek Near Petersburg, AK
Beginning on Sunday, May 25, 2025, NOAA`s National Weather Service
/NWS/ Office in Juneau, AK will begin a new River Forecast Service
for one location in the Petersburg area.
Falls Creek Near Petersburg, Alaska
The new service at this location is a direct result of active model
calibration from the Alaska Pacific River Forecast Center and will
improve hydrologic services to the community of Petersburg. The new
forecast service will not only provide flooding forecasts for areas
near Falls Creek, but it will also assist recreational decision
support services in the entire Petersburg area. On May 25th, NWS
Juneau will begin to issue hydrologic products as necessary that may
include specific river forecasts. The hydrologic products are listed
in the following table:
PRODUCT TYPE WMO HEADER PRODUCT IDENTIFIER
HYDROLOGIC OUTLOOK FGAK77 PAJK JNUESFAJK FLOOD
WATCH WGAK67 PAJK JNUFFAAJK FLOOD
WARNING WGAK47 PAJK JNUFLWAJK FLOOD
STATEMENT WGAK87 PAJK JNUFLSAJK
The NWS defines Flood Stage as the river level at which impacts to
life and/or property begin.
For Falls Creek, minor flood Stage is defined as 22.5 feet and
moderate flood level is 24 feet. Major flooding begins at a stage of
27 feet. Flood Advisories will be issued when water levels are
expected to reach or exceed 22.5 feet and Flood Warnings will be
issued when water levels are expected to reach or exceed 24 feet.
Since the automated equipment was installed in October of 2016, the
highest water level recorded has been 24.48 feet on December 1st,
2020.
The NWS Location Identifier /NWSLI/ for this location is FLSA2.
In addition to the text information detailed above, graphical
depictions of river levels and forecasts are also available on our
website. This can be found under the "Rivers and Lakes" option on
the main NWS Juneau web page at: www.weather.gov/Juneau
If you have any questions or comments on this new service, please
contact:
Aaron Jacobs, Senior Service Hydrologist
National Weather Service Forecast Office Juneau AK
8500 Mendenhall Loop Rd
Juneau, AK 99801
$$