108 GPSMAP 496 Owner’s ManualMain Menu > Alarms TabWeather Alarms Sub TabYou must be receiving XM WX weather information for the weatheralarms to work.Weather Alarms Sub Tabtornado Warnings—sets an alarm to sound when you enter an areawhere a tornado warning is in effect.thunderstorm Warnings—sets an alarm to sound when you enteran area where a severe thunderstorm warning is in effect.Flood Warnings—sets an alarm to sound when you enter an areawhere a flood warning is in effect.Flash Flood Warnings—sets an alarm to sound when you enter anarea where a flash flood warning is in effect.Marine Warnings—sets an alarm to sound when you enter an areawhere a marine warning is in effect.Sonar Alarms Sub Tab (Marine Mode Only)You must be receiving sonar NMEA data for Sonar alarms to work.Sonar Alarms Sub TabShallow Water and Deep Water—sets an alarm to sound when youenter an area of water that is too shallow or deep.Water temp—sets an alarm to indicate if the water temperature hasexceeded or dropped below a specific temperature, or fallen outside/inside a specific temperature range. Select above or Below and thenenter a specific temperature, or select inside or outside and enter arange of temperatures.Drift—sets an alarm to sound when you have exceeded a specifieddrift distance. Select on, and then enter a specific distance.Fish—sets alarm to sound when unit detects a fish of the specifiedsymbol size.
