The reader is left to define this term. The particular virus was considered to be an unidentified viral fever initially since its outbreak and was later described to be a pneumonia. The southwest monsoon typically peaks during late May to the beginning of June in Sri Lanka, with prevailing winds from the south and southwest, streaming toward the Bay of Bengal.The areas that usually receive the heaviest rain are the south and west of the country, including Kalutara, Ratnapura, and Colombo. Annu Rev Environ Resour 41:117141. The southwest monsoon goes from May to September in these areas. Rains or thundershowers will occur at times in Western, Sabaragamuwa, Central and North-Western provinces and in Galle and Matara districts. https://doi.org/10.1002/(SICI)1097-0088(199612)16:12%3c1391::AID-JOC94%3e3.0.CO;2-X, Swapna P, Krishnan R, Wallace JM (2014) Indian Ocean and monsoon coupled interactions in a warming environment. Monsoon Rains is active over Sri Lanka Expect Heavy Rains and Strong Winds. May is generally considered as the wettest month of the year. Abstract The Sri Lanka Dome is a cyclonic recirculation feature in the Southwest Monsoon Current system in the southern Bay of Bengal. Atmosphere 8:52, Sen PK (1968) Estimates of the regression coefficient based on Kendalls Tau. [44], The Sri Lanka Navy deployed 38 officials to help the affected people due to flash floods. 2022 Springer Nature Switzerland AG. Model Earth Syst Environ 5:13771394. The best time to visit the west coast of Sri Lanka is between late November and April. https://doi.org/10.1029/2020GL091497, Ratnayake U, Herath S (2005) Changing rainfall and its impact on landslides in Sri Lanka. All authors equally collaborated in the research presented in this publication by making the following contributions.SS research conceptualization, SS methodology, SS and BP formal analysis, data curation, SS and BP writing original draft preparation, SS and BP writingreview, and editing. Model. The annual southwest monsoon rains started from May 19 and caused severe damages throughout the nation with heavy rainfall causing flash floods. The northeast monsoon affects the climate and rainfall patterns of the northern and eastern coasts of Sri Lanka. Environ Earth Sci 74:30673076. You have entered an incorrect email address! Adv Meteorol 2018:4217917. https://doi.org/10.1155/2018/4217917, Oueslati B, Yiou P, Jzquel A (2019) Revisiting the dynamic and thermodynamic processes driving the record-breaking January 2014 precipitation in the southern UK. https://doi.org/10.1002/met.1816, Schneider U, Finger P, Meyer-Christoffer A, Rustemeier E, Ziese M, Becker A (2017) Evaluating the hydrological cycle over land using the newly-corrected precipitation climatology from the global precipitation climatology centre (GPCC). Heavy showers of about 100 mm can occur at some places in Western and Sabaragamuwa provinces and Kandy, Nuwara-Eliya, Galle, and Matara districts. [1][2][3][4][5] The death casualties were reported from 22 May onwards in the provinces including South, Northwest, North and East. Northeast Monsoon (Dec to Feb) The northeast monsoon is also known as the Maha Monsoon and affects the north and east of the island. https://doi.org/10.1016/S0022-1694(01)00594-7, Zubair L, Ropelewski CF (2006) The strengthening relationship between ENSO and northeast monsoon rainfall over Sri Lanka and southern India. The observations reveal that there is a narrow (~ 50 km wide) westward coastal current against the summer monsoon, separated the eastward southwest monsoon current (SMC) from the island of Sri Lanka. J Agric Meteorol 71:9097. General public is kindly requested to take adequate precautions to minimize damages caused by temporary localized strong winds and lightning during thundershowers. Sherly Shelton. https://doi.org/10.1002/qj.493, Dee DP et al (2011) The ERA-Interim reanalysis: configuration and performance of the data assimilation system. Palaeogeogr Palaeocl 197:114. Q J R Meteorol Soc 135:18301841. Atmos Res 122:136149. https://doi.org/10.1007/s40808-021-01346-7, DOI: https://doi.org/10.1007/s40808-021-01346-7. The onset of southwest monsoon over Kerala has been delayed from the date forecast by the Met department due to its "sluggish" pace. The Sri Lankan Meteorological Department on Tuesday declared the onset over the island nation, the penultimate pit-stop before the monsoon caravan reaches Kerala coast. Clim Dyn 46:949965. Read about weather and climate in Sri Lanka and discover the best time of year to visit. Environ. https://doi.org/10.1029/2002JD002670, Rose BEJ, Lin CA (2003) Precipitation from vertical motion: a statistical diagnostic scheme. Sri Lanka has two monsoons and two different climates in a space less than 300 kilometers across. Even as India is awaiting the onset of this years South-West monsoon along the Kerala coast around May 31 as projected by the India Meteorological Department (IMD,) it would be instructive to look at select geographies in the neighbourhood where the season should have kept its date by now. The normal date of onset over Sri Lanka is May 22, and it would be interesting to see whether the slight lag gets transmitted to the crucial leg next. It is further evidenced by the decreasing trend of precipitable water content, especially over the southwest, south, and eastern parts of Sri Lanka. Observed southwest monsoon rainfall changes in Sri Lanka and possible mechanisms. https://doi.org/10.1029/97JC02719, Wickramagamage P (1998) Large-scale deforestation for plantation agriculture in the hill country of Sri Lanka and its impacts. https://doi.org/10.1146/annurev-environ-110615-085558, Hari V, Villarini G, Karmakar S, Wilcox LJ, Collins M (2020) Northward propagation of the intertropical convergence zone and strengthening of Indian summer monsoon rainfall. According to the National Department of Meteorology, an estimated 35,000 to 50,000 families may be displaced, based on analysis of . Colombo, Kalutara, Gampaha, Galle, Matara, Ratnapura and Kegalle districts are at very high risk of monsoon impact. J Clim 19:15671575. Best Time to Visit the West Coast of Sri Lanka - Colombo, Bentota and Negombo. After a six-day pause, the southwest monsoon has started lingering towards Kerala, having covered southern Sri Lanka on Thursday, the weather office said. J Geophys Res 1031:1445114510. https://doi.org/10.1016/j.gloplacha.2019.05.001, Yue S, Pilon P, Cavadias G (2002) Power of the Mann-Kendall and Spearmans rho tests for detecting monotonic trends in hydrological series. J. Mar. https://doi.org/10.1016/j.atmosres.2012.10.010, Fasullo J, Webster PJ (2003) a hydrological definition of indian monsoon onset and withdrawal. Temple in Dambulla, Sri Lanka. Therefore, this study investigates the SWM rainfall trend for 1980-2013 using monthly rainfall data from 19 meteorological stations and an associated mechanism by analyzing moisture transport and related atmospheric variables. Conditions are favourable for further advance of Southwest Monsoon over some more parts of South Arabian Sea . Shelton, S., Pushpawela, B. Travel is currently allowed to Sri Lanka, with restrictions. Climate 2:242. https://doi.org/10.3390/cli2040242, Chung CE, Ramanathan V (2006) Weakening of north Indian SST gradients and the monsoon rainfall in India and the Sahel. Curr Sci 89:687694, Kendall MG (1975) Rank correlation methods, 4th edn. Part of Springer Nature. https://doi.org/10.1175/JCLI3820.1, Das PK, Chakraborty A, Seshasai MVR (2014) Spatial analysis of temporal trend of rainfall and rainy days during the Indian Summer Monsoon season using daily gridded (0.5 0.5) rainfall data for the period of 19712005. Int J Climatol 27:179187. "Conditions are favorable for further advance of Southwest Monsoon over some more parts of South Arabian Sea, the entire Maldives and adjoining areas of Lakshadweep and some more parts of Comorin area during next 48 hours," the India . Cooler sea surface temperature (SST) in the vicinity of this system is often denoted as the Bay of Bengal "Cold Pool." Although the wind shadow of Sri Lanka creates a region of strong positive wind stress curl, both sea level height dynamics and the . The Climate of Sri Lanka is dominated by the above mentioned topographical features of the country and the Southwest and Northeast monsoons regional scale wind regimes. Monsoon advances to Sri Lanka, onward to Kerala. 44. Many Colombo residents head to Nuwaraeliya over the New Year period to . Sci Rep 9:2859. https://doi.org/10.1038/s41598-019-39306-y, Partal T, Kahya E (2006) Trend analysis in Turkish precipitation data. The average temperature, as with the rest of the coastline, is about 30 degrees Celsius. monsoon sri lanka Latest Breaking News, Pictures, Videos, and Special Reports from The Economic Times. Sci. Sri Lanka's climate includes tropical monsoons: the northeast monsoon (December to March), and the southwest monsoon (June to October). https://doi.org/10.1016/S0031-0182(03)00383-3, Ratna SB, Sikka DR, Dalvi M, Venkata Ratnam J (2011) Dynamical simulation of Indian summer monsoon circulation, rainfall and its interannual variability using a high resolution atmospheric general circulation model. [19], Gampaha was one of the worst affected areas with having about 42, 973 people affected and 33, 832 had been sheltered in the area. https://doi.org/10.1029/2019GL082475, Hinge G, Mazumdar M, Deb S, Kalita MK (2021) District-level assessment of changes in extreme rainfall indices in barak and other basins in Indian Himalayan states: risks and opportunities. This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors. Strong winds about (40-50) kmphcan be expected at times over the western slope of the central hills, Northern, North-Central and North-Western provinces and in Hambantota district. Observations of 37 individual blue whales were recorded off the southern coast of Sri Lanka during the southwest monsoon season. Sri Lanka, formerly Ceylon, is a island country located south-east of India, just north of the Equator, and has a tropical climate, with hot, humid weather all year round. Earth Syst. Therefore, this research aimed to study the spatial-temporal variation and distribution of the Southwest monsoon rainfall during the period of 1981-2010. And thanks to monsoon Yala, expect the heaviest of rainfall between June and September. 43 Monsoon winds direction around Sri Lanka . [47], Australia, UN - Australian government jointly with the UNICEF promised to raise funds as compensation during the monsoon period in Sri Lanka by signing a 3-year deal between 2018 and 2020 with the Sri Lankan government for AUD 750, 000. The prevailing winds from the South West can be recognized by observers in Sri Lanka, from the fact that aircraft take-off and land into the wind, towards the sea. Known as the inter-monsoon period, November sees plenty of rain, but not as much as during the peak monsoon season. In December, the Northeastern monsoon brings wet and stormy weather to the island's northeastern half.In December, Colombo experiences highs of around 88F and lows of 75F, with a few days of rain during the month.Temperatures in Kandy are slightly cooler, with highs around 82F. https://doi.org/10.1029/2008GL035143, Ranatunge E, Malmgren BA, Hayashi Y, Mikami T, Morishima W, Yokozawa M, Nishimori M (2003) Changes in the southwest monsoon mean daily rainfall intensity in Sri Lanka: relationship to the El Nino-southern oscillation. Heavy falls above 10 cm were forecast in Sabaragamuwa province, Kandy and Nuwara-Eliya and fairly heavy falls above 7.5 cm over the Western and North-Western provinces and in Galle and Matara. Charles Griffin, London, Latif M, Syed FS, Hannachi A (2015) Rainfall trends in the south Asian summer monsoon and its related large-scale dynamics with focus over Pakistan. [41][42] However, later the health authorities stated that the viral fever which prevailed in down south region was under controlled. As winter ends, warm, moist air from the southwest Indian Ocean blows toward countries like India, Sri Lanka, Bangladesh, and Myanmar. Planning a Honeymoon During Southwest Monsoon Season. Arabian Sea . As the southwest monsoon retreats, the coastal region of India receives rain due to the northeast monsoon between October and November. The Lankan Met forecast showers or thundershowers across the Western, Sabaragamuwa, Central, and North-Western provinces and in Galle and Matara in the island nation on Tuesday. Anyone you share the following link with will be able to read this content: Sorry, a shareable link is not currently available for this article. Clim Dyn 48:35653581. As the southwest monsoon blows out and the northeast monsoon continues, rain is spread evenly across the country during November. [14] Residents who were living surrounding the red alerted areas were forced to be evacuated by security personnel. Where is the southwest monsoon current? The monsoon has now reached Sri Lanka, and its next stop is Kerala. Aawar T, Khare D, Singh L (2019) Identification of the trend in precipitation and temperature over the Kabul river sub-basin: a case study of Afghanistan. Sightings were made during a scientific geophysical survey campaign conducted in July and August 2017. The results show a statistically non-significant decreasing trend of SWM rainfall in most stations, while the regional average rainfall in the wet, intermediate and dry climate zones decreased by 21.3, 19.3, and 5.3mm for the 34years, respectively. https://doi.org/10.1007/s00382-019-04612-8, Duhan D, Pandey A (2013) Statistical analysis of long term spatial and temporal trends of precipitation during 19012002 at Madhya Pradesh, India. Google Scholar, Baig MRI, Shahfahad A, Naikoo MW, Ansari AH, Ahmad S, Rahman A (2021) Spatio-temporal analysis of precipitation pattern and trend using standardized precipitation index and Mann-Kendall test in coastal Andhra Pradesh. Meanwhile, the Bay of Bengal branch of the monsoon has not shown any progress since 20 May," Akshay Deoras, a researcher at . I have heard this time of the year is monsoon season for the southwest part of the county. https://doi.org/10.1007/s40808-019-00642-7, Naidu CV, Durgalakshmi K, Muni Krishna K, Ramalingeswara Rao S, Satyanarayana GC, Lakshminarayana P, Malleswara Rao L (2009) Is summer monsoon rainfall decreasing over India in the global warming era? Correspondence to The storms brought on by the monsoon typically produce up to 70 percent of the year's rain for much of the Southwest and Texas. [24][25] People living in low-lying areas near Ja-ela were earlier asked to displace to safer places.[26]. Hydrol Process 12:20152028. 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 . Heavy showers about 100 mm can occur at some places in Western and Sabaragamuwa . During this period, a lot of rain is expected and the sea is rough. Daily rainfall data for 187 stations in Sri Lanka spanning the period 1960-1996 were analyzed to investigate the spatial and temporal characteristics of the mean rainfall intensity (MRI) through this time interval with special focus on the Southwest Monsoon (May-September). https://doi.org/10.1175/jcli3670.1, Zubair L, Siriwardhana M, Chandimala J, Yahiya Z (2008) Predictability of Sri Lankan rainfall based on ENSO. volume8,pages 41654175 (2022)Cite this article. J Geophys Res. Strong winds of about (40-50) kmph can be expected at times over the western slope of the central hills, Northern, North-Central, and North-Western provinces, and in the Hambantota district. 31 May, 2015, 05.44 AM IST. Showers or thundershowers will occur at times in Western, Sabaragamuwa, Central and North-Western provinces and in Galle and Matara districts. We are hoping to stay in the southwest part of the country near Galle and enjoy the beaches and other outdoor activities. Meanwhile, the Bay of Bengal branch of the monsoon has not shown any progress since 20 May," Akshay Deoras, a researcher at . Author(s): Sherly Shelton. Therefore, this study investigates the SWM rainfall trend for 19802013 using monthly rainfall data from 19 meteorological stations and an associated mechanism by analyzing moisture transport and related atmospheric variables. J Hydrol X 2:100021. https://doi.org/10.1016/j.hydroa.2019.100021, Suppiah R (1996) Spatial and temporal variations in the relationships between the southern oscillation phenomenon and the rainfall of Sri Lanka. Southwest monsoon (SWM) is one of the major monsoon systems that brings significant rainfall over western and southwestern parts of Sri Lanka. The season arrives first to The Maldives, farther West-South-West of Kerala, normally by mid-May. https://doi.org/10.1007/s40808-021-01152-1, Ihara C, Kushnir Y, Cane MA, De La Pea VH (2007) Indian summer monsoon rainfall and its link with ENSO and Indian Ocean climate indices. Showers or - Get the latest breaking news and top . Disclosure of potential conflicts of interest. International Center for Climate and Environment Sciences, Institute of Atmospheric Physics, Chinese Academy of Sciences, P.O. Tellus A 70:19. Model Earth Syst Environ. Annual 2540 mm to over 5080 mm in south west of the Island. Heavy showersabout 100 mmcan occur at some places in Western and Sabaragamuwa provinces and in Kandy, Nuwara-Eliya, Galle and Matara districts. J Hydrol 259:254271. Surface winds will vary between southwest/westerly at 27 km/hr and may increase to 72-89 km/hr during . The monsoon fuels the growth of summer grasses, which can make or break southwestern ranchers struggling to eke out a living in harsh desert lands. The monsoon has now reached Sri Lanka, and its next stop is Kerala. Clim Dyn 14:213231. Geophys Res Lett. The heaviest hit during this monsoon season is the southwest region including Galle. Sri Lanka was the second worst hit, and still bears scars from that fateful day. The spatial distribution of a the meteorological stations over Sri Lanka (blue triangles) and b monthly mean southwest monsoon rainfall climatology (mm/month) for the 1980-2013 periods. https://doi.org/10.3390/w11122485, Shelton S, Ogou FK, Pushpawela B (2021) Spatial-temporal variability of droughts during two cropping seasons in Sri Lanka and its possible mechanisms Asia-Pacific. As of 26 May 2018; the monsoon floods affected in about 19 districts, killed at least 21 people, about 150, 000 people were affected and further left approximately 23 people missing. Theor Appl Climatol 125:427438. Southwest monsoon (SWM) is one of the major monsoon systems that brings significant rainfall over western and southwestern parts of Sri Lanka. https://doi.org/10.1002/joc.919, Roxy MK, Ritika K, Terray P, Murtugudde R, Ashok K, Goswami BN (2015) Drying of Indian subcontinent by rapid Indian Ocean warming and a weakening land-sea thermal gradient Nature. First Inter-monsoon [March & April] 2. PubMedGoogle Scholar. https://doi.org/10.1007/s00382-014-2261-y, Satyanarayana GC, Dodla VBR, Srinivas D (2020) Decreasing southwest monsoon rainfall over Myanmar in the prevailing global warming era. Are you interested in advertising on our website or video channel Please contact us at [emailprotected]. https://doi.org/10.1002/joc.1394, Joseph P, Simon A (2005) Weakening trend of the southwest monsoon current through peninsular India from 1950 to the present. J Atmos Sci. The flooding severely affected Sri Lanka's Sabaragamuwa Province, Central Province, Northern Province, Southern Province and Western Province leaving 13 dead, 23 missing and about 125, 954 have been affected by the floods. Summer Monsoon. The water levels of both Kelani river and Kalu river were assumed to be rising due to the heavy rain and leaving the Kaduwela-Biyagama bridge to submerge. Southwest Monsoon (May to August) The southwest monsoon brings rains from the Indian Ocean. https://doi.org/10.1002/joc.5390, Yadav RK, Roxy MK (2019) On the relationship between north India summer monsoon rainfall and east equatorial Indian Ocean warming. Colombo, Kalutara, Gampaha, Galle, Matara, Ratnapura and Kegalle districts are at very high risk of floods and landslides, while Colombo and . Eng. The monsoon rainfall variation and distribution have an impact on economical, ecological and sociological aspects of Sri Lanka. [27] On 24 May 2018, the bridge which connects both Kaduwela and Biyagama which lie in the Western Province was officially announced to be closed for 7 hours from 10pm until 5am on 25 May due to soil erosion. Whilst blue whales are regularly recorded on the continental slope of southern Sri Lanka during the northeast monsoon season (NEM) (December-March) and during the .
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