Current Affairs
Daily Bits

Low pressure area over Arabian Sea into cyclonic storm

  • Posted By
    10Pointer
  • Categories
    Geography
  • Published
    12th May, 2021

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.

Verifying, please be patient.

X