Argentina: Adverse weather forecast across northern regions through at least Jan. 24

Event

Severe weather, including thunderstorms and extreme high temperatures, are forecast across parts of northern Argentina through at least Jan. 24. In the northwest, intense storms have caused flooding, leading to ongoing transport disruptions in Jujuy province. As of Jan. 20, Argentina's National Meteorological Service (SMN) has issued yellow thunderstorm warnings (the third-highest level on a four-tier scale) for western Jujuy and Salta provinces. Further showers and thunderstorms are forecast across the region in the coming days. In the northeast, SMN has issued red extreme temperature warnings (the highest level on a four-tier scale) for parts of eastern Salta, eastern and central Formosa, northwestern and southeastern Chaco, northern Corrientes, and Misiones provinces. Orange extreme temperature warnings have been issued for much of the rest of the northeast, with high temperatures forecast to persist over the near term. Officials could update and possibly extend the coverage of weather alerts over the coming days.

Storms brought heavy rainfall to Jujuy province Jan. 19, causing significant flooding which made several roads in the province impassable. National Route 34 at the intersection with National Route 66 in the El Carmen area was blocked in both directions by floodwater and debris. A section of Provincial Route 61 was also closed after the Los Manantiales Bridge was inundated by the Perico River. Flooding has also affected Caimancito, Cusi Cusi, La Esperanza, and San Pedro, as well as several neighborhoods of the provincial capital San Salvador de Jujuy. Further rainfall in the coming days will likely exacerbate the situation in these areas.

Hazardous Conditions
The storms could produce rounds of heavy precipitation, strong winds, and isolated thunderstorm activity in the northwest. Sustained heavy rainfall could trigger flash and areal flooding. Such flooding is possible in low-lying communities near watercourses and other large bodies of water, as well as in urban areas with easily overwhelmed stormwater drainage systems. Sites located downstream of large reservoirs may be subject to flash flooding after relatively short periods of intense rainfall.

In the northeast, the extended period of oppressive heat and dry conditions may produce ideal circumstances for wildfire growth throughout the region. Heatwaves also pose a threat to vulnerable groups - such as the elderly, children, pregnant women, and those with respiratory illnesses - due to the increased possibility of heat stroke or heat exhaustion during prolonged exposure to high temperatures. These health risks could also extend to relatively healthy individuals during significant heatwave events. In addition to significantly impacting athletes and those who work outdoors, high temperatures can cause problems for people using mass transit. The lack of air conditioning and cramped vehicles during rush hour may lead to some passengers' hospitalization.

Transport

The severe weather will likely contribute to transport disruptions across parts of the northwest. Traffic and commercial trucking delays might occur along regional highways. Flooding downpours could inundate some low-lying roads in areas with poor drainage. Strong winds might also pose a hazard to high-profile vehicles. Hazardous weather conditions might cause flight delays and cancellations at regional airports.

In the northeast, very high temperatures may warp rail tracks and force passenger and freight trains to operate at reduced speeds. Damage to road surfaces is also possible, and overheated vehicles may worsen traffic problems in urban areas where congestion is already a problem. Commercial trucking disruptions might occur, as very high temperatures put more stress on engines, making tire blowouts more common. Major flight disruptions are unlikely at regional airports, but general aviation disruptions are possible, and some airfreight carriers could reduce cargo loads. High temperatures could lead to an increased demand for electricity, which might trigger localized brownouts or blackouts, exacerbating hazardous conditions when air conditioning is no longer possible.

Advice

Monitor local media for weather updates and related advisories. Seek updated information on weather and road conditions before driving or routing shipments through areas where severe weather is forecast. Plan accordingly for potential delivery delays if routing shipments by truck through the affected area. Do not attempt to drive through flooded areas.

During heatwaves, remain indoors in air conditioning when possible. If outdoor activities are necessary, frequently rest in shaded areas; avoid activity during the hottest times of the day. Stay well-hydrated by drinking plenty of fluids. Avoid alcoholic beverages, which are dehydrating; drink bottled or boiled water. Wear loose-fitting, light-colored clothing. Cotton fabrics are more cooling than synthetics. Promptly seek medical attention if signs of heat exhaustion or heat stroke develop. Charge battery-powered devices in the case of prolonged electricity outages.

Resources

Argentina National Meteorological Service (SMN) (Spanish)