14 Sep 2023 | 10:08 AM UTC
Vanuatu: Adverse weather forecast across the Shefa and Tafea provinces through at least Sept. 15
Severe weather forecast in central and southern Vanuatu through Sept. 15. Flooding, transport, business, and utility disruptions possible.
Event
Heavy rainfall, strong winds, and possible flash flooding and landslides are forecast across parts of central and southern Vanuatu through at least Sept. 15. As of Sept. 14, the Vanuatu Meteorology and Geo-Hazards Department has issued severe weather warnings for heavy rainfall across Shefa and Tafea provinces and for inland winds in Tafea Province Sept. 14-15. Authorities advise residents to take precautions due to potential flash flooding and flying debris. Marine strong wind warnings are in place for central, channel, and southern coastal waters Sept. 14-15; very rough seas are expected with waves of up to 3 meters (10 feet). Officials could update and extend the coverage of weather alerts over the coming days.
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 lack of stormwater drainage systems. Sites 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 may occur 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 airports across Vanuatu. 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.
