Public Information Statement
Issued by NWS Juneau, AK
Issued by NWS Juneau, AK
847
NOAK47 PAJK 260035
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 Forecasts Service for a few 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 are due to a few reasons, one is due to limited
precipitation information to improve the calibration of the hydrologic model. The other is,
there has been substantial changes in the river basin area from glacier changes upstream in
Canada. This affects the total amount of water that flows through the Alsek River system.
These changes in the drainage basin area affects the calibration and in turn the river
forecasts for these river reaches.
As of 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 commence the provision of a new River Forecast Service for one location in the Gustavus area.
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 improving NWSs hydrologic services to the community of Gustavus. The new
forecast service will not only provide flooding forecasts for areas around Salmon River, but it will also
assist recreational interests 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. The Moderate flood level has been set at 16.5 feet.
Flood Advisories will be issued when water levels are expected to reach or exceed 15.5 feet flood stage
and a 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 seen 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 commence the provision of 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 improving NWSs hydrologic services to the community of Petersburg. The new
forecast service will not only provide flooding forecasts for areas around Fall Creek, but it will
also assist recreational interests 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 22.5 feet. The Moderate flood level has been set at 24 feet, with
Major flooding beginning at 27 feet. Flood Advisories will be issued when water levels are expected to
reach or exceed 22.5 feet flood stage and a Flood Warnings will be issued when water levels are expected
to reach or exceed the Flood Stage level of 24 feet.
Since the automated equipment was installed in October of 2016, the
highest water level seen 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
$$