The second law of thermodynamics states that not all of the energy is used because some of the energy is lost in the form of heat. The lost heat energy is an unusable form of energy, and it causes an increase in the entropy of the universe. Thus, no energy transfer process is efficient due to the loss of energy.
When you touch a hot plate, the transfer of heat from the plate to your hand is called Conduction.
Conduction is the answer you are looking for.
1) Weather services gives up to 8 hours of watch time because its just a prediction and might not be accurate
2) Necessary precautions is when there is a dangerous weather alert coming towards you and you need to go for safety
3) When theres a warning, it means to look out for something and be safe at the same time
