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ADVISORY

2021-10-16

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Weather and Climate Data

 

 

WEATHER FORECAST FOR MULTIDAY BOATS

For the sea areas in between 20N - 10S and 60E-100E

(Issued on 16 October 2021, for next three days)

 

 

 

Sea areas around the island

Showers may occur at several places in the sea areas extending from Kankasanturai to Hambanthota via Puttalam, Colombo and Galle.

Winds will be south-westerly and the wind speed will be (30-40) kmph in the sea areas around the island. Wind speed can be increased up to (50-60) kmph in the sea areas extending from Galle to Pottuvil via Mathara and Hambanthota and the Wind speed can be increased up to (50-55) kmph in the sea areas extending from Puttalam to Kankasanturai

The sea areas extending from Galle to Pottuvil via Mathara and Hambanthota and from Puttalam to Kankasanturai can be rough at times. The other sea areas around the island can be fairly rough at times.

The sea areas extending from Puttalam to Hambanthota via Colombo and Galle may experience surges due to the effect of swell waves, having (2.5-3.0) m height.

Naval and fishing communities are advised to be vigilant in this regards.

 

Bay of Bengal

Weather:

10N-20N, 85E-100E   : Showers or thundershowers at most places.

10N-20N, 80E-85E     : Showers or thundershowers at several places.

Other sea areas            : Showers or thundershowers at a few places.

                                       

Winds:

00-15N, 80E-90E          : South-westerly / (35-45) kmph; gusting up to (55-65) kmph.

05N-15N, 90E-100E     : South-westerly to Westerly / (35-45) kmph; gusting up to (50-60) kmph.

15N-20N, 80E-100E     : South-westerly or South-easterly / (15-30) kmph; gusting up to (40-50) kmph.

Other sea areas              : Variable/ (10-20) kmph.

 

Sea State:

00-15N, 80E-90E           : Rough, very rough at times.

05N-15N, 90E-100E     : Fairly rough, rough at times.

15N-20N, 80E-100E     : Moderate to farily rough.

Other sea areas              : Slight to moderate.

 

 

 

Arabian Sea

 

Weather:

07N-15N, 60E-80E        : Showers or thundershowers at most places.

00-07N, 70E-80E         : Showers or thundershowers at several places.

Other sea areas             : Showers or thundershowers at a few places.

                                     

Winds:

00-10N, 65E-80E           : Westerly to South-westerly / (40-50) kmph; gusting up to (60-70) kmph.

00-10N, 60E-65E         : North-westerly to westerly / (30-40) kmph; gusting up to (55-60) kmph.

10N-13N, 72E-76E       : Anticlockwise / (30-40) kmph; gusting up to (50-55) kmph.

Other sea areas                : North-westerly / (30-40) kmph.

 

 

 

 

 

 

 

 

 

 

Sea State:

00-10N, 65E-80E        : Rough to very rough.

00-10N, 60E-65E         : Fairly rough to rough.

10N-13N, 72E-76E       : Moderate to fairly rough, rough at times.

Other sea areas               : Moderate.

 

 

South Indian sea area

 

 

Weather:

00-10S, 60E-80E         : Showers or thundershowers at most places.

Other sea areas           : Showers or thundershowers at a few places.

Winds:

00-04S, 60E-85E           : South-westerly to Westerly / (30-40) kmph; gusting up to (50-60) kmph.

 

04S-07S, 70E-80E         : Clockwise / (30-40) kmph; gusting up to (50-55) kmph.

 

07S-10S, 60E-80E          : South-easterly / (35-45) kmph; gusting up to (55-65) kmph.

 

05S-10S, 90E-100E       : Easterly to South-easterly / (25-35) kmph.

 

Other sea areas            : Variable/ (15-25) kmph.

Sea State:

00-10S, 60E-85E         : Fairly rough to rough.

05S-10S, 90E-100E     : Moderate.

Other sea areas              : Slight to moderate.

**Temporary strong gusty winds and rough seas can be expected during thundershowers.

Remarks: The deep and shallow sea areas off the Western, South-western and Southern parts of the island will be very rough at times during today(16) and tomorrow(17) October 2021.

 

 

 

 

 

Duty-Meteorologist

Department of Meteorology