Weekly Hydro-meteorological Report, 19, May 2016

Highlights:


Most of the regions received high rainfall during 11th – 17th May while up to 200mm highest rainfall was seen in Colombo, Gampaha, Kalutara northern region of Anuradhapura on 15th May. Extreme rainfall conditions were seen in the entire country during the previous week. The rainfall is expected to decrease in the next week with heavy rainfall in south western region of the country. MJO phase is in 3 and shall slightly enhance rainfall.
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Weekly Hydro-meteorological Report, 12, May 2016

Highlights:


Increased rainfall conditions were observed in the last week compared to the previous week. The entire country received rainfall during 3rd-9th May while up to 60mm high rainfall was seen in Mullaitivu, Vavuniya, northern region of Anuradhapura and south eastern sea region on 6th May. Both NCEP GFS and IRI CFS models predict heavy rainfall in the following two weeks with the entire country expected to receive more than 135 mm rainfall. MJO phase is in 3 and shall slightly enhance rainfall.
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Weekly Hydro-meteorological Report, 5, May 2016

Highlights:


Up to 40 mm high rainfall was received by Colombo, Gampaha, Kegalle, Kurunrgala and Anuradhapura districts during the previous week. Galle and Matara districts also received up to 30 mm rainfall and apart from that more than 10 mm rainfall was not seen in the country. In April 2016 the entire country received below average rainfall except for Colombo, Gampaha and Ratnapura districts. The rainfall is expected to increase in the next two weeks. The high temperature shall continue in the country as the probability of having above average temperature remains high.
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Weekly Hydro-meteorological Report, 28, April 2016

Highlights:


Rainfall was received only in south western and north central regions of the country on 20th and 21st April but there was no rainfall during 22nd -26th. Highest rainfall of 90 mm was seen near Hanwella and surrounding regions on 21st April. NOAA NCEP models predict up to 65 mm rainfall in south western region of the country during 27th– 26th April. MJO is weak so there shall be no effect on rainfall by the MJO.
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Weekly Hydro-meteorological Report, 21, April 2016

Highlights:


Rainfall received in central, southern, western and south western regions of the country during 13th-19th April. Highest rainfall of 70 mm was seen in Moratuwa and near Kurunegala town on 19th April and very less rainfall received in northern and eastern regions of the country during the previous week. NOAA NCEP models predict up to 45 mm total rainfall in south western region of the country while IRI CFS model predicts up to 50 mm total rainfall around Badulla during 20th– 26th April. MJO is weak so there shall be no effect on rainfall by the MJO.
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Weekly Hydro-meteorological Report, 14, April 2016

Highlights:


Up to 100 mm heavy rainfall was seen in most of south western, western, north western and southern regions of the country during the previous week. Very less rainfall was seen in western districts of the country and the Jaffna Peninsula. NOAA NCEP and WRF models predict a continuation in heavy rainfall in the south western region. MJO is weak so there shall be no effect on rainfall by the MJO. El Niño condition is weakening and neutral conditions are expected by June, July which shall enhance rainfall marginally.
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Weekly Hydro-meteorological Report, 07, April 2016

Highlights:


East, south, west, central and south west regions of the country received rainfall during 30th March- 5th April. Highest rainfall of 90 mm was observed around Ratnapura and Balangoda on 30th March and 3rd April while central regions of Kegalle and Kurunegala and Haputale received rainfall up to 60 mm on these days. NOAA NCEP model predicts up to 25 mm total rainfall in south western regions of the country during 6th –12th April and around central, western and south western regions during 13th- 19th April. MJO is in phase 3 and shall slightly enhance rainfall in Sri Lanka.
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