Overview
- A high-pressure system over Sonora is sustaining daytime highs above 45 °C and suppressing monsoon rains across northwest Mexico
- The Servicio Meteorológico Nacional has issued yellow flood alerts in nearly 20 Mexican states for July 23, with chubascos expected to bring thunderstorms, hail and gusty winds
- Intense rainfall of 75 to 150 mm is forecast for July 24–25 in regions such as Michoacán, Guerrero and Oaxaca, raising risks of landslides, urban flooding and road closures
- Forecasters predict Pacific hurricane formation will resume in the last week of July, ending a three-week lull in cyclone activity
- In Argentina, seven provinces are under yellow alerts for heavy rain and extreme cold and the AMBA region will see showers return on July 23 under SMN warnings