Highlights

Rainfall Prediction: From 21st-27th Oct, rainfall shall increase: high rainfall is predicted for the Western plains and hills (105–145 mm), Southern plains, Eastern plains and hills are predicted to receive 75-105 mm while the Northern plains are predicted to receive 65-75 mm. From 28th Oct -03rd Nov, the rainfall shall intensify further with a similar spatial pattern.

Monitored Rainfall: During 14th-20th October, the average rainfall across Sri Lanka totalled 138 mm which was above–normal. There was much higher rainfall across the Western slopes especially in Galle with a maximum of 136 mm on 20th October.

Monitored and Predicted Wind: From 13th -19th October, winds at 1.5 km height were mostly from the East and South East at speeds ranging 2-4 m/s . From 22th-28th October, wind speeds are predicted to be high, in the range of 6-20 m/s still coming from the West and South West.

Monitored Sea and Land Temperature: Sri Lanka recorded seasonable temperatures across its regions. The Eastern plains were the warmest, with maximum temperature of 32°C , compared to 30.2 °C in the Western plains. The sea surface temperature (SST) was warmer than average around Northern, North Western and Eastern coasts by 1 – 1.5 °C.