ECONOMYNEXT – Sri Lanka’s Meteorology Department warned Monday (08) evening that prevailing rough weather conditions will intensify over the next 24 hours due to a low-pressure situation formed in the south-east Bay of Bengal before it subsides on November.
The Met Department has issued a code red (high risk) warning of heavy rainfall above 150mm for the North Western, Western, Sabaragamuwa and Northern provinces and the Galle, Matara, Kandy and Nuwara Eliya districts. The rest of the country can expect moderate rainfalls up to 100mm.
“The current weather in Sri Lanka is caused by a wind convergence zone formed in the western part of the country which is enhanced by a low-pressure situation in the South-East area of the Bay of Bengal,” Malik Fernando, a Met Department meteorologist told EconomyNext.
“This will gradually intensify, but our data does not indicate that it is a cyclonic storm at the moment. However, it will intensify to a low pressure and then a depression.”
Fernando said the low pressure in the Bay of Bengal enhances heavy rainfall in the Northern, Western and North-Western parts of the country, particularly in the coastal areas.
“However, after November 10 heavy-falls will subside, but rains will continue,” Fernando said.
According to the expert, this is a typical nter-tropical convergence zone (ITCZ) situation which passes the island annually.
The ITCZ occurs twice a year and is commonly known as the inter-monsoon season. The first is from April to May and the second from October to November.
“This condition lies around Sri Lanka. This is a typical condition; in a year it moves upwards and downwards.”
The department expects strong winds (60-75kmp) mainly in the southern coastal and sea areas and elsewhere in the country.
Naval and fishing communities are advised not to venture the South-East Bay of Bengal sea area and southern sea areas of the Island until further notice.
Disaster Management Centre (DMC) reports also shows minor flooding is several rivers in the island: the Kelani Ganga (Kitulgala station), Gurugoda Oya (Holombuwa station), Kuda Ganga (Kalawellawa (Millakanda)), Gin Ganga (Baddegama), Attanagalu Oya (Dunamale station).
Most rivers flowing through station are also on alert, the DMC report said.
The Sri Lanka Navy has also kept relief teams on standby to respond to disasters and has deployed three teams to flood-prone Rathnapura and Galle districts, the Navy said. (Colombo/Nov08/2021)