17 Jan 2022 | 07:05 AM UTC
Fiji: Adverse weather forecast nationwide through at least Jan. 25
Severe weather forecast across Fiji through at least Jan. 25. Flooding and transport, business, and utility disruptions possible.
Event
Heavy rainfall, thunderstorms, and strong winds are forecast to continue across Fiji through at least Jan. 25. Additionally, there is a risk of acid rain due to the high sulfur dioxide concentrations in the atmosphere from the eruption of Hunga Tonga-Hunga Ha'apai Volcano in Tonga.
As of Jan. 17, the Fiji Meteorological Service issued a heavy rain alert for the Northern Division and the Lau and Lomaiviti groups and the eastern interior, eastern, and northern parts of Viti Levu. Rounds of occasional heavy rainfall and a few thunderstorms are likely over alert areas, while isolated heavy rainfall and a few thunderstorms are forecast over the rest of Fiji. A flash flood alert is in place over low-lying and flood-prone areas of Nasekawa and Drekeniwai and from Navua to Korovou.
Possible impacts of the adverse weather include flash flooding of low-lying and flood-prone areas, landslides, lightning strikes during thunderstorms, poor visibility at sea and on land, and flooding of water bodies. Officials could update and possibly extend the coverage of weather alerts over the coming days.
Authorities have also warned that the high sulfur dioxide concentrations in the atmosphere from the eruption of Hunga Tonga-Hunga Ha'apai Volcano in Tonga could result in acid rain across Fiji when the sulfur mixes with rainwater. Officials have advised the public to cover all household water tanks, stay indoors if it rains, and thoroughly wash all vegetables and crops before consumption. Residents should be vigilant for possible contamination of water supplies by acid rain.
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.
