Using user feedback throughout 2025, the Alaska Aviation Weather Unit (AAWU) will implement updates to its Surface and Significant Weather (SIGWX) charts beginning on (insert SCN date). These revisions are intended to modernize and enhance the readability of the existing charts, as well as enable the AAWU to move their production off of a beyond end of life system, and reduce duplication of NWS services.
This website provides additional information and examples for (insert SCN link).
Feedback on this change can be submitted to david.kochevar@noaa.gov
David Kochevar
Warning Coordination Meteorologist
National Weather Service Alaska Aviation Weather Unit
Surface Chart changes
Below are examples of the current and new charts, and the replacement for frontal analysis information:
a Higher resolution version will be available from Graphical Forecast for Aviation (GFA)
Surface charts would continue to be updated four times daily, valid at 00z, 06z, 12z and 18z. The file type of the charts would also change from .gif to .png with this change.
frontal Analysis Image URL (Live)
frontal Analysis Interactive map URL (Live)
The frontal analysis replacement would continue to be updated four times daily, valid at 00z, 06z, 12z, and 18z.
Significant Weather Chart changes
For the Significant Weather Chart changes, here are examples of the current and new charts, and the proposed replacement for frontal analysis information:
Significant weather charts would continue to be produced twice daily in this format, with forecasts at 24, 36, 48 and 60 hours. The file type of the charts would also change from .gif to .png with this change.
Proposed SIGWX frontal analysis replacement link (live)
The proposed frontal analysis replacement would continue to be updated twice daily, with forecasts at 24, 48, 72 and 96 hours.
