Air motion maps

Vorticity

Vorticity

These maps show the relative vorticity at a specific pressure level (e.g. 500 hPa) with colours as specified in the legend. Combining the vorticity maps with line plots such as streamlines will give you more information about circulation patterns in the atmosphere, for example. More: see vorticity .

CAPE

Cape

These maps show CAPE (Convective Available Potential Energy) with colours as indicated in the map legend. It is expressed in joules per kilogram (J/kg). You can also combine these maps with others. For instance, adding line plots of the lifted index will give you more information about potential cloud formation. More: see CAPE .

Lifted index

Lifted index

These maps show the dimensionless lifted index (LI). It is visualised with colours as specified in the colour bar. More: see lifted index .

Convective inhibition (CIN)

Convective inhibition (CIN)

These maps show the convective inhibition (CIN) with colours as indicated in the legend. CIN is expressed in joules per kilogram (J/Kg). More: see convective inhibition .

Storm relative helicity

0-3 km Storm relative helicity

These maps show the relative helicity in the indicated atmospheric layer (0-3 km) with colours in m²/s². More: see helicity .

Clear air turbulence (CAT)

Clear air turbulence (CAT)

These maps show the expected intensity of clear air turbulence (CAT) with colours as indicated in the map legend. Visualizing the invisible clear air turbulence on weather maps is very helpful to be prepared for regions where heavy turbulences could appear. It allows to plan a calmer flight path by avoiding regions with severe CAT. More: see clear air turbulence .

Convective updraft

Convective updraft

These maps show the convective updraft, which is expressed in metres per second (m/s). It is visualised with colours as specified in the legend. More: see convective updraft .

K-index

K-index

These maps show the dimensionless K-index with colours as indicated in the map legend. You can also combine this map with line plots of the soaring index for example. More: see k-index .