01 Feb 2022 | 01:56 PM UTC
Vanuatu: Adverse weather forecast nationwide through at least Feb. 2 /update 1
Severe weather forecast across Vanuatu through at least Feb. 2. Flooding and transport, business, and utility disruptions possible.
Event
Heavy rainfall and thunderstorms are forecast across Vanuatu through at least Feb. 2. As of Feb. 1, the Vanuatu Meteorology and Geo-Hazards Department has issued severe weather warnings for isolated heavy rainfall and thunderstorms nationwide through Feb. 2. Residents are advised to remain indoors during thunderstorms and to take precautions for possible flash floods, landslides, and coastal flooding in low-lying areas and areas close to river banks. Officials could update and possibly extend the coverage of weather alerts over the coming days. Further adverse weather is likely across the country from Feb. 4 as Tropical Cyclone Nine is forecast to approach from the west and pass close to the southwestern islands of Vanuatu.
Hazardous Conditions
Sustained heavy 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 the soil has become saturated by heavy rainfall. Disruptions to electricity and telecommunications services are possible where significant flooding, strong winds, or landslides impact utility networks.
Transport
Floodwaters and debris flows may render some bridges or roadways impassable, impacting overland travel in and 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. Severe weather could also trigger flight delays and cancellations at regional airports. Authorities may temporarily suspend port operations or close beach fronts if strong winds trigger hazardous sea conditions.
Localized business disruptions may occur in low-lying areas; some businesses might not operate at full capacity because of flood damage to facilities and some employees' inability to reach work sites.
Advice
Monitor local media for weather updates and related advisories. Confirm all transport reservations and business appointments before travel. Make allowances for localized travel delays and potential supply chain disruptions where flooding has been forecast. Do not drive on flooded roads. Charge battery-powered devices in the case of prolonged electricity outages.
