Bulletin and Products

BULLETINS & PRODUCTS GENERATED BY CYCLONE WARNING DIVISION NEW DELHI & AREA CYCLONE WARNING CENTRES (ACWCs) & CYCLONE WARNING CENTRES (CWCs)

1.) Bulletins Issued by Cyclone Warning Division

Cyclone Warning Division, New Delhi prepares the following bulletin and disseminates to Govt. and Non Govt. agencies.

1.1 Bulletin for Indian coast

Bulletin for India coast is issued in four stages as mentioned below.

  • Pre-cyclone watch,
  • Cyclone alert,
  • Cyclone warning,
  • CPost landfall outlook
  • De-warning

These bulletins are issued from the stage of depression onwards. During the stage of depression/deep depression; it is issued based on 00, 03, 06, 12, and 18 UTC observations. When the system intensifies into a cyclonic storm over north Indian Ocean, these bulletins are issued at 00, 03, 06, 09, 12, 15, 18 and 21 UTC (every three hourly interval) based on previous observations. This bulletin contains present status of the system i.e. location, intensity; past movement and forecast essay online intensity & movement for next 120 hours or till the system weaken into a low pressure area, likely landfall point & time and likely adverse weather including heavy rain, gale wind & storm surge. Expected damage and action suggested are also included in the bulletins. This bulletin is completely meant for national users.

At national level, cyclone warning is furnished on a real time basis to the Control Room in the Ministry of Home Affairs, Government of India, besides other Ministries & Departments of the Central Government. This Division provides cyclone warning bulletins to Doordarshan and All India Radio (AIR) at New Delhi for inclusion in the National broadcast/telecast. Bulletins are also provided to other electronic and print media and concerned state Governments.

Different colour codes are being used since post monsoon season of 2006 at different stages of the cyclone warning bulletins (cyclone alert-yellow, cyclone warning-orange and post landfall outlook-red), as desired by the National Disaster Management.

Description of this bulletin contains the following:

  • Date and time of issue
  • Current Location and Intensity
  • Past movement
  • Maximum sustained surface wind (MSW)
  • 120 hrs.(00, 06, 12, 18, 24, 36, 48, 60, 72, 84, 96, 108 and 120 hrs.) forecast track and intensity (Text and graph) from deep depression stage onwards till the weakening of the system.
  • Forecast track and intensity as mentioned above.
  • Adverse weather (Text and graph)
  • Advisory and action suggested
  • Time of issue of next bulletin

In case of depression, only plain language forecast will be given without the quantitative 120 hrs. forecast of track and intensity as mentioned above.

CWD