Garmin Pilot for iOS User’s Guide190-01501-00 Rev. C 69PlanOverview Plan File Fly Subscriptions Appendices IndexSIGMETSA SIGMET (SIGnificant METeorological Information) advises of weather that ispotentially hazardous to all aircraft. In the contiguous United States, the followingitems are covered: severe icing, severe or extreme turbulence, volcanic ash (red), duststorms, and sandstorms that lower visibility to less than three statute miles.A Convective SIGMET is issued for thunderstorms, isolated severe thunderstorms,embedded thunderstorms, hail at the surface, and tornadoes.A SIGMET is widespread and must affect or be forecast to affect an area of at least3,000 square miles.Viewing AIRMETS and SIGMETS:1) From any page touch > .2) Touch select 'AIRMET/SIGMET' from the Map Overlay menu.3) Touch Map Overlay Control Button and select the desired type of AIRMET/SIGMET (i.e., Convective, Icing, IFR/MTN, or Turbulence) to display.4) Touch within the shaded area for AIRMET/SIGMET details.Or:NOTE:Weather Imagery (WX Imagery) maps can be pinch zoomed for a closerlook.1) From any page touch > .2) Select 'AIRMET/SIGMET' from the list.3) Select the icon for the desired weather map.4) Touch to return the WX Imagery Region Submenu.Or: