The National Meteorological Service (SMN) of the National Water Commission (Conagua) reported that this Sunday, cold front number 17 will advance over the north and northeast of the country, where it will interact with a low-pressure channel located in the west of the Gulf of Mexico and with the subtropical jet stream. This combination will cause unstable conditions with very heavy local rains in the coastal area of Tamaulipas and heavy rains in the Huasteca Alta region of Veracruz. Additionally, showers are expected in Coahuila, Nuevo León, the Media and Huasteca regions of San Luis Potosí, the Sierra Gorda of Querétaro, as well as in various areas of Hidalgo—Sierra Alta, Huasteca, Sierra Gorda, Sierra Baja, and Sierra de Tenango—and in the Sierra Norte and Sierra Nororiental regions of Puebla. In Veracruz, showers will also occur in the Huasteca Baja, Totonaca, Los Tuxtlas, and Olmeca regions, along with isolated rains in Chihuahua, Durango, and in the Capital, Las Montañas, and Papaloapan regions of Veracruz itself. The mass of polar air associated with the front will drive a temperature drop in the Mesa del Norte and generate north winds of between 20 and 30 km/h, with gusts reaching 40 to 60 km/h on the coast of Tamaulipas. For Monday, December 1st, cold front number 17 will extend over the northeast and east of the country, reinforcing its interaction with the polar and subtropical jet streams. Under these conditions, showers are expected in Tamaulipas, in the Huasteca region of San Luis Potosí, in the Sierra Alta and Huasteca regions of Hidalgo, and in the Huasteca Alta and Huasteca Baja regions of Veracruz. Isolated rains are also expected in Chihuahua, Nuevo León, and in various areas of Veracruz—Totonaca, Nautla, Los Tuxtlas, and Olmeca—as well as in the Sierra Norte and Sierra Nororiental regions of Puebla and in the Sierra de Tenango region of Hidalgo. The polar air mass will maintain a cold to freezing environment during the morning and night in mountainous areas of the Mesa del Norte and the Mesa Central, in addition to north winds of between 20 and 30 km/h with gusts of up to 40 to 60 km/h in Tamaulipas. On Tuesday, December 2nd, cold front number 17 will persist over the northeast and east of the national territory and will continue to interact with the polar and subtropical jet streams. These conditions will favor heavy local rains in the Sierra Norte and Sierra Nororiental regions of Puebla, as well as in the Huasteca Alta, Huasteca Baja, and Totonaca regions of Veracruz. Showers are also expected in Tamaulipas, in the Huasteca region of San Luis Potosí, in the Sierra Alta, Huasteca, and Sierra de Tenango regions of Hidalgo, and in various areas of Veracruz such as Nautla, Capital, Sotavento, Las Montañas, Papaloapan, Los Tuxtlas, and Olmeca, in addition to isolated rains in Nuevo León. The polar air mass will continue to generate a cold to freezing environment in the morning and night in mountainous areas of the Mesa del Norte and the Mesa Central, with north winds of 30 to 40 km/h and gusts of 50 to 70 km/h in Tamaulipas and northern Veracruz. Regarding the winter conditions forecast for the next 72 hours, there is no potential for snow or sleet. However, temperatures below -5 °C are anticipated in mountainous areas of Chihuahua and Durango, with the presence of frost. In mountainous regions of Baja California, Zacatecas, Hidalgo, State of Mexico, Tlaxcala, Puebla, and Veracruz, values between -5 and 0 °C are estimated accompanied by frost, while in high areas of Baja California Sur, Sonora, Nuevo León, San Luis Potosí, Aguascalientes, Jalisco, Michoacán, Guanajuato, Querétaro, and Oaxaca, temperatures of 0 to 5 °C with the possibility of frost are expected.
