According to the India Meteorological Department (IMD), a low pressure area is expected to form over the Arabian Sea and is likely to intensify into a cyclonic storm.
Context
According to the India Meteorological Department (IMD), a low pressure area is expected to form over the Arabian Sea and is likely to intensify into a cyclonic storm.
About the likeliness of Cyclone due to low pressure
- A low pressure area is very likely to form over the southeast Arabian Sea which is likely to move north-northwestwards across southeast Arabian Sea and adjoining Lakshadweep area and intensify gradually.
- The regions have put on yellow and Orange alerts.
- The low Pressure areas provide and ideal ground for the development of cyclones.
How the cyclones are formed?
- A cyclone is a large scale air mass that rotates around a strong center of low atmospheric pressure.
- It rotates counterclockwise in the Northern Hemisphere and clockwise in the Southern Hemisphere.
- Cyclones are characterized by inward-spiraling winds that rotate about a zone of low pressure.
- The cyclone's center is the area of lowest atmospheric pressure in the region.
- Cyclogenesis is the process of cyclone formation and intensification.
- There are three main types of surface-based cyclones:
- Extratropical cyclones
- Subtropical cyclones
- Tropical cyclones
Colour-coded alerts
IMD alerts are colour-coded from Green to Red.
- Green for No warning: no action needs to be taken by the authorities, and the forecast is of light to moderate rain.
- Yellow for Watch: authorities are advised to “Be updated” on the situation.
- Orange for Alert: authorities are expected to “Be prepared”. It forecast the heavy to very heavy rainfall.
- Red for Warning: It asks authorities to “Take action”. It forecast for extremely heavy rainfall.
|
