On May 3rd 1999 there was tornado outbreak in Oklahoma which had a record number of tornadoes. On today's map the chief risk is hail. The Storm Prediction Website has a place where all the risks are explained. We chose experimental techniques on the website and chose CAPE map which we then overlaid with due point temperatures map. Dew point is an indicator of how much water vapor is in the air.
Water vapor is a source of clouds and precipitation.
The more water vapor there is the higher the potential for latent heat release. The instability results in rising of water vapor. As the water vapor rises it cools and can condense. If it does condense it may form a cumulus cloud. If it developes further it may form a cumulus congestus cloud.