23 May 2023 | 02:42 AM UTC
Solomon Islands: Adverse weather forecast across western parts of the country through at least May 24
Heavy rainfall, strong winds, and thunderstorms forecast across western Solomon Islands through May 24. Flooding and disruptions possible.
Event
Heavy rainfall, strong winds, and thunderstorms are forecast across the western parts of the Solomon Islands through at least May 24. As of May 23, the Solomon Islands Meteorological Service has issued a heavy rain warning for Choiseul, Rennell and Bellona, and Western provinces. The service warns that thunderstorms would accompany heavy rainfall and 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 the waters of Rennell and Bellona Province. Southeasterly winds of 37-46 kph (23-29 mph), moderate to rough seas, and moderate southerly swells are forecast. Vessels are advised that strong winds can produce dangerous wave conditions that are hazardous to small boats, and heavy rainfall can reduce visibility. Officials could update and possibly 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 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.
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. 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.
