Weekly Hydro-meteorological Report, 07 July 2012

Summary

Monitoring

Weekly Monitoring: During last week (27th June- 2nd July) rainfall ranged between 5 mm - 30 mm. The North- eastern regions of the island received rainfall on the 27th June and 1st of July. Heavy rainfall was observed in the Southern half of the island during 30th June - 2nd July.

Monthly Monitoring: During the month of June some parts of Puttalam, Mannar, Kilinochchi, Jaffna, Anuradhapura and Trincomalee districts experienced above average rainfall, but the surplus is below 20 mm. The rest of the country experienced below average rainfall.

Predictions

7 Day Prediction: For the coming week an accumulated rainfall of 5 mm - 55 mm is predicted for the southern half of the island.

IMD WRF Model Forecast & IRI forecast: WRF Model Predicts 1 mm - 65 mm rainfall particularly for Gampaha, Colombo, Kalutara, parts of Puttalam and Galle districts on the 06th of July, and rainfall shall drop while spreading towards eastward. For the 07th of July, the Model Predicts 1 mm - 125 mm rainfall for Colombo, Kalutara and Gampaha districts, and rainfall shall decrease towards North, South and eastward directions, and no rainfall is predicted for the eastern side of the island. IRI models forecast up to 20 mm of rainfall for the entire island.


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Weekly Hydro-meteorological Report, 28 June 2012

Summary

Monitoring

Weekly Monitoring: During last week (19th - 26th June) rainfall ranged between 5 mm - 20 mm. On the 21st the entire country received rainfall. Maximum 20 mm of daily rainfall was recorded at Matara, Kalutara, Galle on 23rd, 24thand Batticaloa on 25th-26th respectively. On the remaining days less than 20 mm of rainfall was scattered in different places of Sri Lanka.

Monthly Monitoring: During the month of May some parts of Galle, Matara, Ratnapura and Hambantota districts experienced above average rainfall, but the surplus is below 30 mm. Below average rainfall was experienced in rest of the country.

Predictions

7 Day Prediction: For the coming week, accumulated rainfall of 5 mm - 75 mm is predicted for the Southwestern regions of the island. An accumulated rainfall 5 mm – 55 mm of rainfall is predicted for the entire island.

Critique of Water Management in Sri Lanka

Current Problems in Water Management as Seen by a Parliamentarian

From the Daily Mirror with Video in Sinhala  - Anura Kumara Dissanayake claims that the ongoing drought is not driven meteorologically. 

Weekly Hydro-meteorological Report, 21 June 2012

Summary

Monitoring

Weekly Monitoring: During last week (13th - 18th June) rainfall ranged between 5 mm - 50 mm. On the 13th & 14th rainfall observed for the Southwestern and Western regions of Sri Lanka. On 17th & 18th entire country received rainfall. However compared to 13th, 14th, 17th & 18th there was no considerable rainfall on 15th & 16th.

Monthly Monitoring: During the month of May some part of Galle, Matara, Ratnapura and Hambantota districts experienced above average rainfall but the surplus is below 30 mm. Below average rainfall was experienced in the rest of the country.

Predictions

7 Day Prediction: For the coming week, an accumulated rainfall of 5 mm - 55 mm is predicted for the Southwestern regions of the island.

Weekly Hydro-meteorological Report, 14 June 2012

Summary

Monitoring

Weekly Monitoring: During last week (05th - 12th June) rainfall ranged between 5 mm - 40 mm. On the 06th and from 09th-12th June, rainfall was observed for the entire country. However on the remaining days scattered rainfall was observed in a few places around the country especially for the Southwestern regions of Sri Lanka.

Monthly Monitoring: During the month of May some part of Galle, Matara, Ratnapura and Hambantota districts experienced above average rainfall but the surplus is below 30 mm. Below average rainfall was experienced in the rest of the country.

Predictions

7 Day Prediction: For the coming week, an accumulated rainfall of 5 mm - 55 mm is predicted for the entire island.

IMD WRF Model Forecast & IRI forecast: WRF Model Predicts 1 mm-65 mm rainfall particularly for the coastal belt between Gampaha to Galle districts for the 15th of June. For the same day inner coastal parts of Jaffna to Hambantota including Kurunegala and Ratnapura; and parts of Ampara shall receive rainfall less than 35 mm, 1 mm-8 mm and 1 mm-2.5 mm respectively. WRF Model Predicts, for the Coastal belt between halves of Puttalam to Kalutara districts 1 mm-125 mm of rainfall on the 16th and it shall spread towards the eastern parts in a diminishing pattern, but the eastern half of Sri Lanka shall not experience rainfall. IRI models forecast predicts up to 50 mm of rainfall for the entire island.

Weekly Hydro-meteorological Report, 7 June 2012

 Summary

Monitoring 

Weekly Monitoring: During last week (30th May- 04th June) rainfall ranged between 5mm-20mm. A scattered rainfall was observed in the most parts of the island particularly in the southern half except northern region on the 30th of May. Some parts of the Southwestern region received up to a 15mm of rainfall on the 1st June. There was no significant rainfall during rest of the week. 

Monthly Monitoring: During the month of May some part of the Galle, Matara, Ratnapura and Hambantota districts experienced above average rainfall but the surplus is below 30mm. A below average rainfall was for the rest. 

Predictions 

7 Day Prediction: For the coming week, an accumulated rainfall of 5mm- 55mm is predicted for the Southwestern and Western regions of the island. 

IMD WRF Model Forecast & IRI forecast: WRF Model Predicts 1mm-65mm rainfall particularly for the Southwestern, Western and Northwestern regions on the 9th of June. The same conditions are predicted on the 10th but high rainfall of about 65mm shall be expected particularly for the Colombo, Gampaha and Kalutara districts. IRI models forecast predicts up to 20mm of rainfall for the entire island. 

Weekly Hydro-meteorological Report, 31 May 2012

Summary

Monitoring 

Weekly Monitoring: From 22nd May -29th May rainfall ranged between 5-145 mm. During the week heavy rainfall was observed for the South-western regions of the island. On 22nd & 29th May, no rainfall was recorded compared to the rest of the days in the week. 

Monthly Monitoring: During the month of April, the entire island has shown an above average rainfall. 

Predictions 

7 Day Prediction: For the coming week, an accumulated rainfall of 5 - 55 mm is predicted for the South-western regions of the island, and 5 – 35 mm is predicted for the entire island. 

IMD WRF Model Forecast & IRI forecast: For the 1st of June 2012, WRF Model Predicts less than 65 mm rainfall for Kalutara district. The rainfall shall spreads towards Colombo, Gampaha, Kegalle, Ratnapura, Galle and Matara districts with a decreasing pattern. The WRF Model Predicts the same pattern of rainfall to continue on 2nd June 2012 for the above mentioned regions. IRI models forecast 5 - 25 mm of rainfall for the entire country.