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22 Dec 2021 | 04:54 AM UTC

Malaysia: Flooding ongoing across central regions as of Dec. 22 /update 2

Flooding ongoing across central regions of Malaysia as of Dec. 22. Transport disruptions, evacuations ongoing.

Warning

Event

Flooding is ongoing across parts of central and northern West Malaysia as of Dec. 22. At least 63,000 people remain evacuated in Kelantan, Pahang, Melaka, Negeri Sembilan, Perak, Selangor, and Terengganu states and the Federal Territory of Kuala Lumpur, including at least 32,000 and 27,000 people from Pahang and Selangor states, respectively. The Tenaga Nasional Berhad shut down power to 333 substations across Kelantan, Pahang, Melaka, Negeri Sembilan, and Selangor states and the Federal Territory of Kuala Lumpur, affecting at least 17,000 people. Flooding has killed at least 20 people in Selangor State and seven others in Pahang State.

Authorities have lifted all rain warnings as of Dec. 22 and floodwaters in parts of Selangor State and Klang Valley, Kuala Lumpur, have begun to recede.

Hazardous Conditions
Further rainfall could trigger flooding in low-lying communities near rivers, streams, and creeks. Urban flooding is also possible in developed areas with easily overwhelmed or a lack of stormwater drainage systems. Sites located downstream from large reservoirs or rivers may be subject to flash flooding after relatively short periods of intense rainfall. Landslides are possible in hilly or mountainous areas, especially where heavy rainfall has saturated the soil. Disruptions to electricity and telecommunications services are possible where significant flooding, landslides, or strong winds impact utility networks.

Transport
Multiple federal and state roads are closed across the affected area due to flooding. Traffic disruptions are ongoing along the road toward the New Klang Valley Expressway (NKVE) turnoff near the Bukit Jelutong toll plaza in Shah Alam, Selangor State. Floodwaters and debris flows could render some bridges, rail networks, or roadways impassable, impacting overland travel around affected areas. Ponding on road surfaces could cause hazardous driving conditions on regional highways. Authorities could temporarily close some low-lying routes that become inundated by floodwaters. Flooding could block regional rail lines; freight and passenger train delays and cancellations are possible in areas that see heavy rainfall and potential track inundation. Localized business disruptions may occur in low-lying areas.

Health
Flooding could heighten the threat of disease outbreaks. Backflow from drains mixed with floodwaters can become trapped in open areas when inundations recede. These stagnant pools often become a breeding ground for mosquitoes and bacteria, increasing the incidence of insect- and water-borne diseases. Exposure to contaminated water from inundated industrial sites, sewer systems, and septic tanks also poses a significant health threat.

Advice

Seek updated information on weather and related disruptions, including road conditions before driving or routing shipments through areas where severe weather is forecast. Plan accordingly for potential freight delivery delays if routing shipments by truck through the affected area. Do not attempt to drive through flooded areas. Charge battery-powered devices if prolonged electricity outages occur.

Resources

Malaysian Meteorological Department (Malay)