https://aviationweather.gov/help/changelog/ NWS/Aviation Weather Center https://aviationweather.gov/help/changelog/#4.19 2026-06-01 GFA buttons adjusted for small devices Location button re-added on mobile devices Implement progressive disclosure for NavAids Add Special Events page Update Traffic Flow Management page archive link Add support for named regions and CWSUs to URL options Fix METAR/TAF data page decoded precipitation values Fix routine cancellation of G-AIRMETs Fix ISA temperature calculation for FL180 Add MCI to top sites list Fix 0 hour DSS graphics Fix PIREP and METAR on forecast GFA pages Fix reflectivity graphics Fix broken extended range forecast panel Fix TCF verification page legend Fix blurry PIREP labels Fix TCF whiteboard and verification timing issue Fix forecast hour value Fix display of G-AIRMETs on freezing level Fix time option for URL bookmarks NWS/Aviation Weather Center https://aviationweather.gov/help/changelog/#4.17 2026-05-04 GFA mode (GA, LA, extended) removed with time and level individually configurable Linearly spaced time and level selection Full time selection on mobile devices One-click GFA tab selection Zoom and current location moved to lower left corner Hover popups on pointer capable devices Selectable range ring display Text value display for temperature, ceiling, visibility, density altitude, and freezing level Popup sampling of data values for fields above Forecast wind streamlines in addition to wind barbs and arrow selection Color infrared satellite imagery Mountain wave turbulence G-AIRMET attributes Map highlighting select Pacific islands METAR display of relative humidity, mean sea-level pressure, one hour precip, wind text, and lowest cloud base METAR display filter for sites at less than 5,000 ft ceiling and/or 5 mile visibility NWS/Aviation Weather Center https://aviationweather.gov/help/changelog/#4.16 2026-04-17 G-AIRMET SIERRA due to ceiling only display fix Fix DSS graphic icing legend Fix snow depth reporting to tenth of an inch Add new GTG CIT plot to GFA Update SLD threshold from .05 to .27 Volcanic Ash Advisory Center map outline NWS/Aviation Weather Center https://aviationweather.gov/help/changelog/#4.14 2026-03-27 Improved labeling consistency Improved PIREP location validation Ceiling and Visibility dashboard available for public comment Fix SIGMET updating in the Nordic countries Fix DSS prog chart analysis reliability NWS/Aviation Weather Center https://aviationweather.gov/help/changelog/#4.13 2026-02-25 Terminal Weather Dashboard KSFO update wind criteria Add 1000 ft temperature forecast Improve legend consistency across the site Fix AIRMET and domestic SIGMET IWXXM namespace NWS/Aviation Weather Center https://aviationweather.gov/help/changelog/#4.11 2026-01-22 Usernames are no longer case sensitive Model reflectivity available on precip and thunder NWS/Aviation Weather Center https://aviationweather.gov/help/changelog/#4.9 2025-12-31 Terminal Weather Dashboard ice pellets criteria added Terminal Weather Dashboard snow impact increase Deduplication of domestic SIGMETs on GFA Fix borders on basemap tiles NWS/Aviation Weather Center https://aviationweather.gov/help/changelog/#4.8 2025-12-16 Fix display of METARs with missing station information Fix ceiling calculation for some cases of missing TAF clouds Improve input parameter validation Video tour of the Aviation Weather Center