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). The Southwest Monsoon is expected to arrive over Sri Lanka in mid to late May 2020. Summer Monsoon. 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. I am planning my honeymoon in Sri Lanka from May 1 to May 15, 2022. 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. The Myanmar Department of Meteorology and Hydrology declared the onset on Saturday, a day after rains hit the South Bay of Bengal helped in by a low-pressure area that went on to set up cyclone Yaas.. 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. It usually happens between April and September. A weather bulletin said that a cyclonic circulation lay over northern Sri Lanka and its neighbourhood at lower levels and a "trough runs from this system to the southeast Arabian sea." . No official announcement to the effect is available, but prevailing fairly widespread rain with isolated heavy showers and thunderstorms being reported from the northern and central atolls suggest the obvious. 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. Clim Dyn 42:24392454. The codes used during the current study are not available. [48], China - China and Sri Lanka signed an agreement on constructing tunnels to prevent flooding situation in Colombo in the future following the deadly floods. J Clim 19:15671575. The summer monsoon is associated with heavy rainfall. The Southwest monsoon is expected to be established countrywide today and the wind speed can increase up to (60-70) kmph in the sea areas extending from Kankesanturai to Pottuvil via Puttalam, Galle and Hambanthota, due to a wind convergence zone around Sri Lanka, says the Department of Meteorology. Meteorol Appl 27:e1816. J Geophys Res. Many Colombo residents head to Nuwaraeliya over the New Year period to . [16] Further the Meteorological Department of Sri Lanka predicted further rainfall in the coming days especially in the south and west parts of the country before the conclusion of the monsoon season. 2022 Springer Nature Switzerland AG. The Southwest Monsoon (Niritha Diga Mosam) is expected to arrive over Sri Lanka in May 25 / 26 according to Department of Meteorology Sri Lanka. Eng. https://doi.org/10.1007/s40808-021-01262-w, Bretherton CS, Peters ME, Back LE (2004) Relationships between water vapor path and precipitation over the tropical oceans. Q J R Meteorol Soc 137:553597. Department of Meteorology Sri Lanka say that South-west monsoon condition is gradually establishing over the island. 45 Average monthly rainfall in Sri Lanka . Due to its location within the tropics, Sri Lanka usually enjoys perfect 12-hour days and 12-hour nights. Geophys Res Lett 48:e2020GL091497. By Ifham Nizam. Southwest monsoon (SWM) is one of the major monsoon systems that brings significant rainfall over western and southwestern parts of Sri Lanka. J Geophys Res 1031:1445114510. 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. https://doi.org/10.1038/nclimate1495, Webster P, Magana VO, Palmer T, Shukla J, Thomas R, Yanai M, Yasunari T (1998) Monsoons: Processes, predictability, and the prospects for prediction. Sci. In May 2021, the southwest monsoon and activation of tropical storm "Tauktae" in the southeast Arabian sea triggered heavy rainfall across western and southwestern parts of Sri Lanka. As a results, the weakening of the SST gradients between AB and BB can deteriorate the monsoon circulation untimely, which weakens SWM over Sri Lanka. [32] Unnichchei tank in Batticaloa also reached spill levels. Southwest Monsoon (May to August) The southwest monsoon brings rains from the Indian Ocean. volume8,pages 41654175 (2022)Cite this article. After a six-day pause, the south-west monsoon has started lingering towards Kerala, having covered southern Sri Lanka on Thursday, the weather office said. 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 . Colombo, Kalutara . This study found thatSST in CI, AB, and BB regions are increasing by 0.48C, 0.31C, and 0.32Cfor the study period. The heaviest hit during this monsoon season is the southwest region including Galle. During an average monsoon season, cities across the Southwest typically receive anywhere from 1 to 8 inches of rain. https://doi.org/10.3389/feart.2020.00306, Lu E, Zeng X, Jiang Z, Wang Y, Zhang Q (2009) Precipitation and precipitable water: their temporal-spatial behaviors and use in determining monsoon onset/retreat and monsoon regions. 2022, 10(11), 1626; . Rains or thundershowers will occur at times in Western, Sabaragamuwa, Central and North-Western provinces and in Galle and Matara districts. The monsoon has now reached Sri Lanka, and . 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. 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. . https://doi.org/10.1007/s00382-016-3284-3, Limin S, Oue H, Takase K (2015) Estimation of areal average rainfall in the mountainous Kamo river watershed, Japan. monsoon climate, both as a large and local scale, on the agricultural land use of Sri Lanka, mainly on crop cultiva-tion. Fairly heavy showers above 75 mm can be expected at some . Atmosphere 8:52, Sen PK (1968) Estimates of the regression coefficient based on Kendalls Tau. Modeling Earth Systems and Environment [20] 28, 328 were affected in Ratnapura, the second most affected area in the island due to the prevailing weather conditions. Heavy showersabout 100 mmcan occur at some places in Western and Sabaragamuwa provinces and in Kandy, Nuwara-Eliya, Galle and Matara districts. Heavy showers of about 100 mm can occur at some places in Western and Sabaragamuwa provinces and Kandy, Nuwara-Eliya, Galle, and Matara districts. Today once again, the southwest monsoon season is with us and believe it or not, just . 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. All rights reserved. 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. Model. The Climate experienced during 12 months period in Sri Lanka can be characterized in to 4 climate seasons as follows. [24][25] People living in low-lying areas near Ja-ela were earlier asked to displace to safer places.[26]. Meanwhile, the Bay of Bengal branch of the monsoon has not shown any progress since 20 May," Akshay Deoras, a researcher at . During this period, a lot of rain is expected and the sea is rough. 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. 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. The southwest of the island experiences high season during this time. Monsoon advances to Sri Lanka, onward to Kerala. The average temperature, as with the rest of the coastline, is about 30 degrees Celsius. [33] On 24 May, the Colombo-Hatton main road was blocked and disrupted due to landslides which caused traffic block in the main road. Sightings were made during a scientific geophysical survey campaign conducted in July and August 2017. The . 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. 16 May, 2022 | 4:45 pm. https://doi.org/10.1080/16000870.2018.1445380, Xavier A, Kottayil A, Mohanakumar K, Xavier PK (2018) The role of monsoon low-level jet in modulating heavy rainfall events. https://doi.org/10.1175/jcli3670.1, Zubair L, Siriwardhana M, Chandimala J, Yahiya Z (2008) Predictability of Sri Lankan rainfall based on ENSO. 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. Singapore rescues 300 suspected migrants from sinking boat, Inquiry on filling stations that did not sell fuel, Heavy showers over 100 mm in several areas, India wants Sri Lanka to be more humane towards its fishermen. News Archive | 10.21203/rs.3.rs-894605/v1 . https://doi.org/10.1002/met.1361, Dee DP, Uppala S (2009) Variational bias correction of satellite radiance data in the ERA-Interim reanalysis. Model Earth Syst Environ 5:14811493. which is located along the southwest coast. The government has advised people living near . Even though the country is small, there are significant differences, especially as regards to the distribution of the rainfall, whose pattern is determined by the monsoon regime, but also by the two zenith passages of the . As winter ends, warm, moist air from the southwest Indian Ocean blows toward countries like India, Sri Lanka, Bangladesh, and Myanmar. Myanmar sees the monsoon onset just ahead of Lanka, with May 18 being the date for southern parts of the country. Several spells of showers will occur in Northern Province and Anuradhapura and Hambantota districts. Communications 6:7423. https://doi.org/10.1038/ncomms8423, Rubasinghe R, Gunatilake SK, Chandrajith R (2015) Geochemical characteristics of groundwater in different climatic zones of Sri Lanka. Colombo, Kalutara, Gampaha, Galle, Matara, Ratnapura and Kegalle districts are at very high risk of floods and landslides, while Colombo and . 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. Tp tin:India southwest summer monsoon onset map en.svg Connected to: {{::readMoreArticle.title}} Tp tin; Lch s tp tin; Trang s dng tp tin; S dng tp tin ton cc; c tnh hnh; Kch thc bn xem trc PNG ny ca tp tin SVG: 530599 im nh. Int J Climatol 31:19271942. Wind speeds can pick up to a healthy 50-60 km/hr over the island and even 70 km/hr at times along the western slope of the Central hills, Northern, North-Central and North-Western provinces and in Trincomalee and Hambantota, the Lankan Met said. The southwest monsoon goes from May to September in these areas. This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors. [21][22][23] The Ministry of Disaster Management revealed that Ja-Ela was overflowing due to the rise of water levels of Attanagala Oya which is located in Attanagalla close to Ja-ela area. J Agric Meteorol 71:9097. This is a preview of subscription content, access via your institution. 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. . Southwest monsoon: 7 low pressure systems triggered rainfall in Odisha. https://doi.org/10.1007/s40808-019-00597-9, Article https://doi.org/10.1029/2002JD002670, Rose BEJ, Lin CA (2003) Precipitation from vertical motion: a statistical diagnostic scheme. A special feature is that the hot and humid lowlands and the salubrious hill country are separated by a few hours motoring. May is generally considered as the wettest month of the year. https://doi.org/10.1007/s003820050219, Trenberth KE, Fasullo JT, Mackaro J (2011) Atmospheric moisture transports from ocean to land and global energy flows in reanalyses. https://doi.org/10.1029/2020GL091497, Ratnayake U, Herath S (2005) Changing rainfall and its impact on landslides in Sri Lanka. 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. Save my name, email, and website in this browser for the next time I comment. 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). Int J Climatol 16:13911407. Photo: OTV/Representational. The monsoon has now reached Sri Lanka, and its next stop is Kerala. The areas that usually receive the heaviest rain are the south and west of the country, including Kalutara, Ratnapura, and Colombo. 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. South-west monsoon condition is establishing in Sri Lanka, Nirithadiga Mosam Wesi Southwest monsoon weather establish in Sri Lanka, 400 arrested over May 9th unrest in Sri Lanka, HRCSL appointed special Rapporteur to investigate May 9 unrest, Sydney court rejects bail for Danushka Gunathilaka, Indian High Commissions Defence Adviser Meets Jaffna Commander. Heavy rainfall and strong winds are common and it is generally worse as you travel further north. Its terrain is mostly low, flat to rolling plain, with mountains in the south-central interior. KOCHI: With the southwest monsoon further advancing into the Maldives-Comorin area and entering Sri Lanka, pre-monsoon showers are likely to pick up pace.According to India meteorological . COLOMBO (News 1st); The Department of Meteorology announced that the South-west monsoon condition is gradually establishing over the island. Hydrol Process 12:20152028. https://doi.org/10.1002/(SICI)1099-1085(19981030)12:13/14%3c2015::AID-HYP716%3e3.0.CO;2-3, Wickramagamage P (2016) Spatial and temporal variation of rainfall trends of Sri Lanka. "The southwest monsoon onset remains stalled over northern Sri Lanka, but conditions look favorable for the monsoon to reach Kerala around June 3," AccuWeather Senior Meteorologist and Lead . The south-west monsoon condition is active further over the country. 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 . "Fairly heavy to heavy falls (around 75-10 [43], The Health Ministry of Sri Lanka warned people that diseases such as dengue, cholera, leptospirosis and other skin related disorders could spread in the areas affected by floods with flood waters receding in several districts after the end of monsoon period. Showers or thundershowers will occur at times in Western, Sabaragamuwa, Central, and North-Western provinces and Galle and Matara districts. https://doi.org/10.1007/s12665-015-4339-1, Sahai AK, Grimm AM, Satyan V, Pant GB (2003) Long-lead prediction of Indian summer monsoon rainfall from global SST evolution. Disclosure of potential conflicts of interest. 46 Average monthly mean temperature in Sri Lanka . Cities like Chennai, . 2018 Sri Lanka floods and landslides caused from an annual heavy southwest monsoon beginning around 19 May. 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. 44. https://doi.org/10.1175/1520-0442(2003)016<3200a:AHDOIM>2.0.CO;2, Fukushima A, Kanamori H, Matsumoto J (2019) Regionality of long-term trends and interannual variation of seasonal precipitation over India. [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. Annual 2540 mm to over 5080 mm in south west of the Island. How is the Sangh Parivar stamping its mark on Indian philately? [41][42] However, later the health authorities stated that the viral fever which prevailed in down south region was under controlled. J Mt Sci 2:218224. Q J R Meteorol Soc 135:18301841. Int J Climatol 23:903919. Terms of Use | 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. 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 general public is kindly requested to take adequate precautions to minimize damages caused by temporary localized strong winds and lightning during thundershowers. The monsoon has now reached Sri Lanka, and its next stop is Kerala. Southwest monsoon (SWM) is one of the major monsoon systems that brings significant rainfall over western and southwestern parts of Sri Lanka. Conditions are favourable for further advance of Southwest Monsoon over some more parts of South Arabian Sea . 2. A low pressure area is likely to form over southwest Bay of Bengal off Sri Lanka coast around November 9, said India Meteorological Department (IMD) on Friday. Known as the inter-monsoon period, November sees plenty of rain, but not as much as during the peak monsoon season. 43 Monsoon winds direction around Sri Lanka . Heavy showers about 100 mm can occur at some places in Western and Sabaragamuwa . [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. https://doi.org/10.1007/s00382-013-1787-8, Trenberth KE, Guillemot CJ (1998) Evaluation of the atmospheric moisture and hydrological cycle in the NCEP/NCAR reanalyses. 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. This is consequently the most touristic season in Sri Lanka. "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 . Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations. The monsoon in Sri Lanka. The northeast monsoon affects the climate and rainfall patterns of the northern and eastern coasts of Sri Lanka. - 87.248.32.134. Less than 1250 mm in the north west and south east of the Inland.. Rainy Seasons. News 1st, 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. Progr Earth Planet Sci 6:20. https://doi.org/10.1186/s40645-019-0255-4, Gimeno L et al (2016) Major mechanisms of atmospheric moisture transport and their role in extreme precipitation events. Planning a Honeymoon During Southwest Monsoon Season. The observed decreasing rainfall is attributed to the decreasing trends of total moisture transport over the study domain (7.14kgm1s1), resulting from the weakening of low-level westerlies at 850hPa and decreasing specific humidity at 850hPa in the Arabian sea(AB), Central Indian Ocean(CI, and Bay of Bengal (BB) regions. Sri Lanka has two monsoons and two different climates in a space less than 300 kilometers across. https://doi.org/10.1007/s40808-021-01346-7, DOI: https://doi.org/10.1007/s40808-021-01346-7. What is monsoon season in Sri Lanka? August is an ideal month for those wanting to experience both the Northeast and Southwest regions of the island, typically quite unusual due to Sri Lanka's monsoon seasons. Earth Sci 8:306324. 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. https://doi.org/10.1002/hyp.5993, Pathak AA, Dodamani BM (2020) Trend analysis of rainfall, rainy days and drought: a case study of Ghataprabha River Basin, India. 2021 . The influence of the Indian Ocean sea surface temperature (SST) on SWM rainfall is also evaluated. Southwest summers can be especially harsh in years when the monsoon falters, leaving shriveled plants and baked soil in its wake. Its average annual temperature varies from 27.0 C (81 F) in the coastal lowlands to 16 C (60.8 F) in the central highlands. https://doi.org/10.1175/1520-0442(2004)017<1517:rbwvpa>2.0.co;2, Burt TP, Weerasinghe KDN (2014) Rainfall distributions in Sri Lanka in time and space: an analysis based on daily rainfall data. The army also joined hands with the Sri Lankan Navy with starting the evacuation process by sending more than 100 soldiers. 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/qj.493, Dee DP et al (2011) The ERA-Interim reanalysis: configuration and performance of the data assimilation system. 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 monsoon rainfall variation and distribution have an impact on economical, ecological and sociological aspects 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. According to the National Department of Meteorology, an estimated 35,000 to 50,000 families may be displaced, based on analysis of . https://doi.org/10.1029/2008JD011288, Naveendrakumar G, Vithanage M, Kwon H-H, Iqbal MCM, Pathmarajah S, Obeysekera J (2018) Five decadal trends in averages and extremes of rainfall and temperature in Sri Lanka. Author(s): Sherly Shelton. 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. The 2017 Sri Lanka floods affected 15 districts, killed at least 208 people and left a further 78 people missing. The onset of southwest monsoon over Kerala has been delayed from the date forecast by the Met department due to its "sluggish" pace. Int J Climatol 27:179187. South West Monsoon- May to August; North East . https://doi.org/10.1002/joc.921, Mohammad P, Goswami A (2019) Temperature and precipitation trend over 139 major Indian cities: an assessment over a century. Written by Teena Marian [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. https://doi.org/10.1002/met.1333, Sinha N et al (2019) Isotopic investigation of the moisture transport processes over the Bay of Bengal. Therefore, this research aimed to study the spatial-temporal variation and distribution of the Southwest monsoon rainfall during the period of 1981-2010. J Clim 19:20362045. https://doi.org/10.1080/01621459.1968.10480934, Shelton S, Lin Z (2019) Streamflow variability over the period of 19902014 in Mahaweli River basin, Sri Lanka and its possible mechanisms. Model Earth Syst Environ 5:13771394. Stray dog menace in Kerala comes to centre stage after rise in attacks, Bigger and Better Prizes Only on CRED: Heres What the Winners Had To Say. We are hoping to stay in the southwest part of the country near Galle and enjoy the beaches and other outdoor activities. Sri Lanka is affected by two monsoons, each hitting a side of the island at different times. 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. MBC Networks (Pvt) Ltd, I have heard this time of the year is monsoon season for the southwest part of the county. Seas are expected to be generally rough. 2(a) displays the multi-year mean power spectrum of the Sri Lanka rainfall anomaly from May to September.Based on the 99% confidence level, the significant frequency peaks mostly lie in the 10-35-day band. The highest point is Pidurutalagala at 2,524 m (8,281 ft). Clim Dyn 46:949965. Clim Dyn 20:855863. https://doi.org/10.1002/joc.1514. Historically, the monsoon begins during the first few weeks of July and runs through September. Heavy falls in Sri Lanka. 1. 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. [13], The red alert was issued to areas which are surrounded near rivers such as Kelani Ganga, Kalu Ganga, Gin Ganga and Nilwala Ganga. The observations presented are based on the author's comprehensive geographical and climatological studies in Sri Lanka since 1967 1). https://doi.org/10.1016/j.atmosres.2012.10.010, Fasullo J, Webster PJ (2003) a hydrological definition of indian monsoon onset and withdrawal. https://doi.org/10.2480/agrmet.D-14-00055, Lin Z, Shelton S (2020) Interdecadal change of drought characteristics in Mahaweli River Basin of Sri Lanka and the associated atmospheric circulation difference front. 2022/05/19. [35] Nearly, cases related to the viral fever were increased with 50 percent in Southern Province since the start of the monsoon season from May 19. As the southwest monsoon retreats, the coastal region of India receives rain due to the northeast monsoon between October and November. 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. Surface winds will vary between southwest/westerly at 27 km/hr and may increase to 72-89 km/hr during . Geophys Res Lett 47:e2020GL089823. May 24, 2016 (LBO) - The South-west monsoon condition is gradually establishing over the country, and showers or thundershowers will occur at times in the Western, North-Western, Southern, Central and Sabaragamuwa provinces, the Met Dept said on Tuesday. [6][7] About 4 people were reported dead due to lightning, 5 people were killed due to floods and lightning, 8 people died due to drowning and further left 4 people dead resulting from fallen trees. [36] 14 people including 11 children were killed due to pneumonia with about 400 patients being treated at hospitals in the South.
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