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SATURDAY, JULY 05, 2025
What are the meaning of marine signals

Environment

TBS Report
20 May, 2020, 12:10 pm
Last modified: 20 May, 2020, 12:55 pm

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What are the meaning of marine signals

TBS Report
20 May, 2020, 12:10 pm
Last modified: 20 May, 2020, 12:55 pm
Photo: The Bangladesh Meteorological Department
Photo: The Bangladesh Meteorological Department

According to The Bangladesh Meteorological Department, there are the following 11 kinds of cyclone warning signals used for sea ports:

Distant Cautionary Signal No 1
There is a region of squally weather (wind speed of 61 kms/hour) in the distant sea where a storm may form.

Distant Warning Signal No 2
A storm (wind speed of 62-88 kms/hour) has formed in the distant deep sea. Ships may fall into danger if they leave harbour,

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Local Cautionary Signal No 3
The port is threatened by squally weather (wind speed of 40-50 kms/hour).

Local Warning Signal No 4
The port is threatened by a storm (wind speed of 51-61 kms/hour) but it doesn't appear that the danger is as yet sufficiently great to justify extreme precautionary measures.

Danger Signal No 5
The port will experience severe weather from a storm of slight or moderate intensity (wind speed of 62-88 kms/hour) that is expected to cross the coast to the south of Chittagong port or Cox's Bazar port and to the east of Mongla port.

Danger Signal No 6
The port will experience severe weather from a storm of slight or moderate intensity (wind speed of 62-88 kms/hour) that is expected to cross the coast to the north of the port of Chittagong or Cox's Bazar and to the west of the port of Mongla.

Danger Signal No 7
The port will experience severe weather from a storm of light or moderate intensity (wind speed of 62-88 kms/hour) that is expected to cross over or near the port.

Great Danger Signal No 8
The port will experience severe weather from a storm of great intensity (wind speed of 89 kms/hour or more) that is expected to cross the coast to the south of the port of Chittagong or Cox's Bazar and to the east of the port of Mongal.

Great Danger Signal No 9
The port will experience severe weather from a storm of great intensity (wind speed of 89 kms/hour or more) that is expected to cross the coast to the Mongla.

Great Danger Signal No 10
The port will experience severe weather from a storm of great intensity (wind speed of 89 kms/hour or more) that is expected to cross over or near the port.

Failure of Communication No 11
Communications with the Storm Warning Centre have broken down and local officers consider that a devastating cyclone is following.

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warning / signal / marine signals

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