Why Tropical Cyclones weaken over land after landfall ?
After just a few hours, a tropical cyclone over land begins to weaken rapidly because the storm lacks the moisture and heat sources that the ocean provided. This depletion of moisture and heat hurts the tropical cyclone’s ability to produce thunderstorms near the storm centre. Without this convection the cyclone cannot survive. However, there are instances like Orissa super cyclone of October 1999, which maintained its intensity of cyclonic storm even 24 hours after landfall. During this period, it remained practically stationary over coastal Orissa.
