South America: High temperatures forecast over parts of central and northern Argentina, southern Brazil, and northern and western Uruguay through Feb. 16

Event

High temperatures are likely to persist across parts of central and northern Argentina and neighboring parts of far southern Brazil, and northern and western Uruguay through at least Feb. 16. Monthly temperature records have been broken in parts of central and northern Argentina in recent days, with temperatures of around 40 C (104 F) recorded in parts of the affected area. Isolated storms may moderate temperatures in parts of the region Feb. 13; however, temperatures are generally not expected to decline until Feb. 16-17.

As of early Feb. 13, Argentina's National Meteorological Service has issued the following high-temperature warnings across the country;

• Red high-temperature warnings (the highest level on a three-tier scale): Parts of central, eastern, and southern Corrientes and northeastern Mendoza provinces.

• Orange high-temperature warnings: Parts of central and eastern Buenos Aires, northwestern and southeastern Corrientes, northeastern Entre Rios, and northern Salta provinces.

• Yellow high-temperature warnings: Parts of central and southwestern Buenos Aires, Catacama, northern Cordoba, western Corrientes, northwestern and western Entre Rios, northwestern Mendoza, northern La Pampa, southern La Rioja, northern and southern San Luis, central and northern Santa Fe, southeastern Santiago del Estero, southern Salta, and Tucuman provinces.

Orange warnings have also been issued across much of Rio Grande do Sul and far southern Santa Catarina states in Brazil and a heatwave warning has been issued across much of northern and western Uruguay. Officials could upgrade or expand the alerts over the coming days as conditions change.

Hazardous Conditions
The extended period of oppressive heat and dry conditions may produce ideal circumstances for wildfire growth throughout the region. Heatwaves also threaten 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 and Utilities
Very high temperatures may damage road surfaces, 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 vehicles, 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. 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)
Brazil National Institute of Meteorology (INMET)
Uruguayan Institute of Meterology (INUMET)