Geoscience Reference
In-Depth Information
Fig. 7:
A typical graphical presentation of cyclone wind forecast during
cyclone, Nilam.
coastal earth stations, (iv) Bulletins for Indian Navy, (v) Port warnings, (vi)
Fisheries warnings, (vii) Four-stage warnings for Central and State Govt.
officials, (viii) Bulletins for broadcast through AIRs for general public, (ix)
Warnings for registered users, (x) Bulletins for press, and (xi) Warnings for
aviation (issued by concerned aviation meteorological offices).
The most important warning for disaster management is the one issued to
government officials under a four-stage warning system. The first stage warning
known as “Pre Cyclone Watch”, issued 72 hours in advance, contains early
warning about the development of a cyclonic disturbance in the NIO, its likely
intensification into a TC and the coastal belt likely to experience adverse
weather. The second stage warning known as “Cyclone Alert” is issued at least
48 hrs in advance of the expected commencement of adverse weather over the
coastal areas. It contains information on the location and intensity of the storm,
likely direction of its movement, intensification, coastal districts likely to
experience adverse weather and advice to fishermen, general public, media
and disaster managers. The third stage warning known as “Cyclone Warning”
is issued at least 24 hours in advance of the expected commencement of adverse
weather over the coastal areas. These warnings give the latest position of cyclone
and its intensity, likely point and time of landfall, associated heavy rainfall,
strong wind and storm surge alongwith their impact and advice to general
public, media, fishermen and disaster managers. The fourth stage of warning
known as “Post Landfall Outlook” is issued at least 12 hours in advance of
expected time of landfall. It gives likely direction of movement of the cyclone
Search WWH ::
Custom Search