26 Sep 2023 | 09:07 AM UTC
Solomon Islands: Adverse weather forecast nationwide through at least Sept. 28
Heavy rainfall, strong winds, and thunderstorms forecast across the Solomon Islands through Sept. 28. Flooding and disruptions possible.
Event
Heavy rainfall, strong winds, and thunderstorms are forecast across much of the Solomon Islands through at least Sept. 28. As of Sept. 26, the Solomon Islands Meteorological Service has issued a heavy rain alert for Choiseul, Isabel, Malaita, and Western provinces. The service warns that heavy rainfall will be accompanied by thunderstorms over the next 24-48 hours, which could trigger landslides and flooding near hill slopes, large rivers and streams, and low-lying areas. A strong wind warning is also in effect for most waters of the Solomon Islands; winds of 37-46 kph (23-29 mph) will generate rough seas. Officials could update and possibly extend the coverage of weather alerts over the coming days.
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 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.
Authorities could issue mandatory evacuation orders for flood-prone communities over the coming days. Disruptions to electricity and telecommunications services are possible where significant flooding or landslides impact utility networks.
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. If strong winds trigger hazardous sea conditions, authorities may temporarily suspend port operations or close beach fronts.
Localized business disruptions may occur in low-lying areas; some businesses might not operate at full capacity because of flood damage to facilities, possible evacuations, 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.
