The focus here is particularly on rainfall in March and April, given the sensitivity of agricultural decisions to early southwest monsoon rainfall at the beginning of the, As is the case for most countries in South and Southeast Asia, rice cultivation plays a vital role in Sri Lanka [, The island of Sri Lanka is located at the southern tip of the Indian sub-continent, extending from 5°55′ to 9°51′N and from 79°42′ to 81°53′E. The emphasis is on daily rainfall rather than on longer-period totals, in particular the number of daily falls exceeding given threshold totals. Warm, sunny months for a trip to Sri Lanka. Interested in the detailed Weather and Climate of Matara District, Sri Lanka? Interna-tional literature is rich of works defining rainfall intensity-duration models to Standardized SOI data used here were calculated using the method of [, Intensity of the IOD is represented by the SST gradient between the western equatorial Indian Ocean (50°E–70°E and 10°S–10°N) and the southeastern equatorial Indian Ocean (90°E–110°E and 10°S–0°S). This is true even for the driest month. Global Economic Prospects - Forecasts. CCPI for the month of November 2020 is 137.1. Monsoonal, Convectional and depressional rain accounts for a major share of the annual rainfall. The results show that there are no significant negative rainfall trends in the catchment over the last 26 years. The mean annual rainfall is less than 900mm in the South-eastern and north-western (driest) parts of the island to over 5000mm in the western slopes and the central highlands. Daily rainfall totals are analyzed for the main agro-climatic zones of Sri Lanka for the period 1976–2006. January, the same as December, in Colombo, Sri Lanka, is another hot winter month, with average temperature fluctuating between 22.3°C (72.1°F) and 30.9°C (87.6°F).The ideal sea water temperature of 27.7°C (81.9°F) and only 5 rainfall days, with 58.2mm (2.3") of accumulated rainfall, make January the best time for swimming and other water activities. The analysis emphasises the importance of the selected catchment due to the ongoing Uma Oya development program. 1). Kumar, K.K. Showers or thundershowers will occur at several places in Sabaragamuwa, Central and Western provinces and in Galle and Matara districts in the evening or night. Authors in [, Most studies of long-term variations of rainfall in Sri Lanka have used monthly totals (e.g., [, analyze daily rainfall data over three decades (1976–2006 ) for locations (. Gaps (48 months) were infilled using data from the nearby stations: Thihagoda (1979–1981; 11/1973, 1–2/1988, 10–12/1988, 1–3/1989. The month with the least rainfall in Colombo, Sri Lanka, is January when the rain falls for 5 days and typically collects 58.2mm (2.3") of precipitation. The observed climate of the 20th century. Rainfall Distributions in Sri Lanka in Time and Space: An Analysis Based on Daily Rainfall Data @article{Burt2014RainfallDI, title={Rainfall Distributions in Sri Lanka in Time and Space: An Analysis Based on Daily Rainfall Data}, author={T. Burt and K. Weerasinghe}, journal={Climate}, year={2014}, volume={2}, pages={242-263} } For one station (Mapalana), where a complete daily series is available from 1950, a longer-term perspective on changes over half a century is provided. The results show that there are no significant negative rainfall trends in the catchment over the last 26 years. In this study, we used a comprehensive set of statistical metrics to investigate the historical trends in averages and extremes of rainfall and temperature in Sri Lanka. Travel Health Journal ALL BLOG POSTS. Geethalakshmi, V.; Yatagai, A.; Palanisamy, K.; Umetsu, C. Impact of ENSO and the Indian Ocean Dipole on the north-east monsoon rainfall of Tamil Nadu State in India. Please note that many of the page functionalities won't work as expected without javascript enabled. The emphasis is on daily rainfall rather than on longer-period totals, in particular the number of daily falls exceeding given threshold totals. Colombo Temperature Yesterday. Suppiah, R. Extremes of the Southern Oscillation phenomenon and Sri Lankan rainfall. rainfall data were obtained from the Meteorological Department of Sri Lanka itself. Coupled ocean-atmosphere-land processes and South Asian monsoon variability. ; Sabatier, J.L. Rainfall is the liquid form of precipitation. The main southwest (“Yala”) monsoon brings rain to the west and southwest coasts and the hill country from April or May to September and is wettest from April to June. Precipitation in Sri Lanka averaged 142.05 mm from 1901 until 2015, reaching an all time high of 687.50 mm in December of 1957 and a record low of 1.20 mm in February of 1980. Four seasons were identified in past studies [1]. Zubair, L.; Columbia University, New York, NY, USA. Land and climate in relation to cropping patterns: rain-fed lowland rice. 13.22 Information of Libraries in Sri Lanka 158 13.23 Libraries in Sri Lanka by Provice 158 13.24 National Library Data of Sri Lanka 158 13.25 Health Services 159 13.26 Selected Public Health Personnel 160 13.27 Public Health Personnel by District – 2017 161 13.28 Activities of Health Campaigns 162 13.29 Postal Services 163 you will at last be able to give in such a way that the other is able to receive It remains important to assess the risk of drought for both cultivation seasons and to understand how risk varies spatially in relation to the different ENSO phases. Nuwara Eliya, Sri Lanka. ; Luc, G. Kaplan, A.; Cane, M.A. Correlations were deemed significant when the 95% confidence limit was exceeded. For a sample size of 31 pairs of observations (study period: 1976–2006 inclusive), Since 1950, there has been a tendency for annual rainfall totals to decrease at Mapalana (. K. D. N. Weerasinghe obtained the data and suggested the research topic; both authors contributed to the data analysis; T. P. Burt produced the first draft of the paper which was then edited by K. D. N. Weerasinghe; both authors have responded to referees’ comments. Daily rainfall totals are analyzed for the main agro-climatic zones of Sri Lanka for the period 1976–2006. Kumar, P.P. If you continue browsing, you accept our use of cookies. Colombo, Sri Lanka. Maximum temperature yesterday: 88 °F (at 2:30 pm) Minimum temperature yesterday: 77 °F (at 5:30 am) Average temperature yesterday: 83 °F. The emphasis is on daily rainfall rather than on longer-period totals, in particular the number of daily falls exceeding given threshold totals. Much of Sri Lanka receives 50% of its annual rainfall in the three months beginning October. Author to whom correspondence should be addressed. Missing data means that the number of pairwise correlations may differ slightly between seasons and stations; in most cases, Daily rainfall data have also been used to provide measures of direct value to the farming community. Utilizing over 100 years of rainfall records in 15 meteorology stations, an analysis was carried out to extract the trends of annual rainfall depth in Sri Lanka over the last century. Zubair, L.; Suryachandra, A.R. Nuwara Eliya, Sri Lanka. April to June: El Niño tends to be wet whilst La Niña tends to be dry; July to August: El Niño tends to be wet whilst La Niña tends to be dry; October to December: El Niño tends to be wet whilst La Niña tends to be dry; The caption to table VI(c) in [. Each selected city will show you the following graphs: 1. Why you should get vaccinated. May 2005: Manjula Siriwardhana, Kusalika Ariyarathne, Irugal Bandara, Heli Bulathsinhala, Janaki Chandimala, Siraj Razick, Upamala Tennakoon and Lareef Zubair, FECT Technical Report-2, Quality evaluation of historical maximum and minimum temperature data in Sri Lanka. Top luxury hotels in Sri Lanka . (Weather station: Colombo, Sri Lanka). ; Yamagata, T. Modulation of Sri Lankan. Climate and Average Weather in Matara District, Sri Lanka. Travel Health Journal ALL BLOG POSTS. Trincomalee, Sri Lanka. The monsoonal rainfall is categorized into 4 main types according to the direction of wind flow. ; Palmer, T.N. Precipitation in Sri Lanka is directly influenced by SSTs in the IO, as well as by conditions in the Pacific Ocean. Finances. data. The rainfall pattern is determined by the monsoon regime, but also by the two zenith passages of the sun (that is, when it shines directly overhead in the sky at mid-day), which occur in April and October. The northwest and the southeast are the driest, while the southwestern region is the wettest. Morris, R.A.; Zandrasta, H.G. ; Magana, V.O. Sri Lanka will delay the reopening of airports that have remained shut since March 18, amidst a surge in coronavirus cases, officials said.Coronavirus cases soared to 2612 on Sunday following the detection of a cluster in Kandakadu, with experts warning that the situation could lead to a second wave. Rainfall measurements at Mapalana have been conducted accordingly to the protocols established by the Meteorological Department of Sri Lanka and data are subject to the same levels of quality assurance. The Sri Lanka lowland rain forests represents Sri Lanka's Tropical rainforests below 1,000 m (3,281 ft) in elevation in the southwestern part of the island. Modulation of Sri Lanka’s climate during El Niño events is related to changes in the Walker circulation, resulting in heightened convection over Sri Lanka in OND and enhanced subsidence during the rest of the year [, We have not investigated links with SSTs in the Bay of Bengal but judging by results in [, Other than OND, significant correlations are almost all negative (JAS, JFM, M+A) or not found at all (AMJ). A statistically significant increasing trend of rate 3.15 mm/year Average monthly precipitation over the year (rainfall, … The rainfall pattern is determined by the monsoon regime, but also by the two zenith passages of the sun (that is, when it shines directly overhead in the sky at mid-day), which occur in April and October. The global temperature and rainfall data by station is available as NOAA MONTHLY STATION data. Quantitative precipitation forecasts are very important for planning day to day human . Climate Information for Trincomalee, Sri Lanka. The emphasis is on daily rainfall rather than on longer-period totals, in particular the number of daily falls exceeding given threshold totals. Why you should get vaccinated. Web Release on CCPI – November 2020. The National Statistical System that prevails in Sri Lanka is mostly centralised and it needs to be upgraded to keep abreast with the current data revolution. 7-hour rain and snow forecast for , LK with 24-hour rain accumulation, radar and satellite maps of precipitation by Weather Underground. The best time to visit the southwest region of Sri Lanka During this time, the weather is warm; the city of Galle on the southwestern tip enjoys an average high of 29°C (84°F) for example. Forward rainfall accumulation from 1 March and 1 September was also calculated. The southwest monsoon runs from the last week of May to October. The northwest and the southeast are the driest, while the southwestern region is the wettest. Available online: Singh, O.P. Read more here. Kandy, Sri Lanka. The mean precipitation of the year would be 6 mm (the rainfall of the whole area decreased in 2012) but the rainfall in certain cells (certain areas) actually increased (1 mm versus 20 mm). The authors declare no conflict of interest. Furthermore, the northward and southward migrations of the Inter Tropical Convergence Zone (ITCZ) during the year also govern the climate. Changing patterns of heavy rainfall in upland areas: a case study from northern England. Regionalization of daily rainfall in Sri Lanka was examined using orthogonal factor analysis (OFA) based on daily rainfall data of 42 stations for a 15-year period (1971–1985). The southwest monsoon runs from the last week of May to October. Sri Lanka’s Disaster Management Center reported more than half a million people have been affected by the flooding. 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