Mexico: High temperatures forecast to persist across much of the country through at least March 15

High temperatures are forecast to persist across much of Mexico through at least March 15. An anticyclonic circulation at medium levels of the atmosphere will generate a low probability of rain and a hot environment over central, southern, and western regions from March 11 before the heat spreads to eastern, northeastern, and southeastern regions March 12-14. Cold fronts are expected to approach northwestern Mexico March 13 and northern and northwestern regions March 14, bringing cooler temperatures to these regions. Temperatures of 40-45 C (104-113 F) are forecast in parts of Guerrero, Michoacan, and southern Morelos states March 11-14, Campeche and Yucatan March 13-14, and San Luis Potosi, Tabasco, and Tamaulipas March 14. Temperatures of 30-40 C (86 F) are expected across much of the rest of central, southern, and western Mexico March 11-14 and eastern regions March 12-14.

The extended period of oppressive heat and dry conditions may produce ideal circumstances for wildfire growth throughout the country. 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.

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.