What is the Synoptic Map?
The Synoptic Map provides an overview of atmospheric pressure systems, helping you understand larger-scale weather patterns and how they may affect your local forecast.
The map displays:
High (H) and Low (L) pressure systems, showing the location of major weather systems.
Isobars, lines connecting areas of equal atmospheric pressure.
Labelled pressure contours, showing barometric pressure values in hectopascals (hPa).
GMDSS weather information, providing important marine weather warnings and forecasts.
Isobars that are close together indicate a stronger pressure gradient, generally associated with stronger winds. Isobars spaced further apart typically indicate lighter winds.
You can also tap anywhere on any map to view the barometric pressure at that specific location. A data pop-up will display the pressure value in hectopascals (hPa), alongside other weather information relevant to the map you are viewing. This allows you to check the exact forecast pressure for any point on the map.
How to access the Synoptic Map?
The Synoptic Map is available as a standalone map in the PredictWind App, but you can also display the isobars as an overlay on selected forecast maps.
Open the PredictWind App.
From the main menu, select Synoptic Map to view pressure systems, labelled isobars and GMDSS information.
Alternatively, you can overlay isobars on the Wind, Rain and Custom Maps by toggling Isobars ON in the Forecast Options box.
This allows you to view atmospheric pressure patterns alongside your selected weather forecast.
Note: On the standalone Synoptic Map, isobars and GMDSS information are always displayed and cannot be turned off, as they form part of the Synoptic Map. The only optional overlay you can toggle ON or OFF on this map is Lightning.