As the front moves north of 30S/35S, and if warm/moist air is available from Amazonia, deep convection will develop.
- Meteorologist needs to consider indicators/stability indices (observed/forecasted) for potential for severe weather/squall lines. Tornados, Hail, Heavy rainfall affects Central Argentina-Rio de la Plata-Paraguay-Southern Brasil.
The standard set of stability indices, for middle latitudes forecasting, work well over South America south of 20S. Their effectiveness over Amazonia-Peru is questionable.
Stability indices such as:
work well over the southern portions of the continent. In addition, consider height falls.