Storm Signal

I learned that there are different storm signals depending upon the strength of the cyclone. Public storm signal #1 exhibits winds of 30-60 kph that may be expected in at least 36 hours or intermittent rains may be expected within 36 hours. Unless this warning signal is upgraded during the entire existence of the tropical cyclone, only very light or no damage at all may be sustained by the exposed communities. Public storm signal #2 exhibits winds of greater than 60 kph and up to 100 kph that may be expected in at least 24 hours. In general, the winds may bring light to moderate damage to the exposed communities. Public storm signal #3 exhibits winds of greater than 100 kph up to 185 kph that may be expected in at least 18 hours. In general, moderate to heavy damage may be experienced, particularly in the agricultural and industrial sectors. I want to know more about the different instruments used to detect the strength of the cyclone. I would like to research on how to easily detect the coming of a cyclone. I appreciate the fact that Philippines has now instruments to help determine natural calamities such as cyclones. I can apply my learning and insights in my daily life, that when there’s a cyclone I have enough knowledge to do the necessary things to lessen the damage that it may cause.