Garmin aera 795/796 Pilot’s Guide190-01194-00 Rev. A 91Hazard Avoidance Overview GPS Navigation Flight Planning Hazard Avoidance Additional Features Appendices IndexForecast LegendSunnyPartly CloudyCloudyMostly CloudyThunderstormsRainSnowFreezing RainWindyHazeVery ColdFoggyVery HotFronts LegendSURFACE PRESSUREThis feature displays pressure isobars and pressure centers. The isobars connectpoints of equal pressure. Pressure readings can help determine weather and windconditions. High pressure areas are generally associated with fair weather. Lowpressure areas are generally associated with clouds and the chance of precipitation.Isobars that are packed closely together show a strong pressure gradient. Stronggradients are associated with areas of stronger winds. Pressure units can be displayedin Millibars (mb) and Inches of Mercury (in).Surface Pressure Data