Climate Bulletin For Sri Lanka (3 September 2021)

Highlights          

                   

  • Fairly heavy rainfall is predicted for Central, Northern, Sabaragamuwa and Western provinces and Galle and Matara districts during 3rd - 7th September.

  • Fairly heavy rains were experienced in the Southern, Central, Sabaragamuwa & Western provinces with max of 86 mm in Matara district on 1st September.

  • From 24th- 30th August: up to  15 m/s from Southwesterly were experienced over the island.

  • Sea surface temperature was observed above 0.5℃ to the West of Sri Lanka and neutral to the East.

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Predictions

Rainfall

14-day prediction: 
NOAA NCEP models: 

From 1^st – 7^st September: 

Total rainfall by Provinces

• 65 mm - Sabaragamuwa, Western
• 55 mm - Central, Northern, Southern
• 45 mm - Uva
• 35 mm - Eastern
• 25 mm - North Central, North Western

From 8^th – 14^th September: 

Total rainfall by Provinces:

• 45 mm - Sabaragamuwa
• 35 mm - Central, Western, Southern
• 25 mm - Uva, Northern
• 15 mm - Eastern 

MJO based OLR predictions:

For the next 15 days: 

MJO shall be active thus, slightly enhanced rainfall during 3^rd – 15^th September. 

Ocean State (Text Courtesy IRI)

Pacific Sea Sate: August 25, 2021 

Equatorial SSTs were below average in parts of the eastern Pacific Ocean and near average across the rest of the Pacific Ocean in late-August and most key atmospheric variables were ENSO –Neutral condition. A large majority of the model forecasts predict ENSO-neutral likely to continue through the Northern Hemisphere summer.

Indian Sea Sate

Sea surface temperature was observed above 0.5℃ to the West of Sri Lanka and neutral to the East.