Garmin GPSMAP 441s Owner's Manual - Page 79

Viewing Fishing Information, Understanding City Forecasts, Understanding Surface Pressure

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Understanding City Forecasts City forecasts appear as standard weather symbols. The forecast is viewed in 12-hour increments for the next 48 hours. Using XM WX Weather and Audio Understanding Surface Pressure This feature shows pressure isobars and pressure centers. The isobars connect points of equal pressure. Pressure readings can help determine weather and wind conditions in an area. High-pressure areas are generally associated with fair weather. Low-pressure areas are generally associated with clouds and the chance of precipitation. Isobars packed closely together show a strong pressure gradient. Strong pressure gradients are associated with areas of stronger winds. Pressure units are shown in Millibars (mb), Inches of Mercury (in), and Hectopascals (hPa). Viewing Fishing Information The Fishing view contains current water temperature, surface pressure conditions, and fishing forecasts. From the Home screen, select Information > Weather > Fishing. GPSMAP 400/500 Series Owner's Manual 73

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GPSMAP 400/500 Series Owner’s Manual
´²
Using XM WX Weather and Audio
Understanding City Forecasts
City forecasts appear as standard weather symbols. The forecast is
viewed in 12-hour increments for the next 48 hours.
Viewing Fishing Information
The Fishing view contains current water temperature, surface
pressure conditions, and fishing forecasts.
From the Home screen, select
Information
>
Weather > Fishing
.
Understanding Surface Pressure
This feature shows pressure isobars and pressure centers. The
isobars connect points of equal pressure. Pressure readings can help
determine weather and wind conditions in an area. High-pressure
areas are generally associated with fair weather. Low-pressure areas
are generally associated with clouds and the chance of precipitation.
Isobars packed closely together show a strong pressure gradient.
Strong pressure gradients are associated with areas of stronger
winds.
Pressure units are shown in Millibars (mb), Inches of Mercury (in),
and Hectopascals (hPa).