Heavy rain is expected across parts of western and southern Brazil until at least September 23. As of early September 20, the Brazilian National Institute of Meteorology (Inmet) issued the following weather warnings across the affected area:
Orange warning (medium level on a three-level scale) for heavy rain: Mato Grosso do Sul, most of the states of Rio Grande do Sul, Santa Catarina, and western São Paulo. Between 3-6 cm (1-2 inches) of rain per hour or 5-10 cm (2-4 inches) of rain per day and winds of 60-100 km/h (37-62 mph) in orange warning areas this is .
Yellow warning for heavy rain: across the rest of the affected area.
Officials can update and possibly extend coverage of relevant weather alerts over the coming days.
Continued heavy rainfall may cause more flooding in low-lying communities near rivers, streams and streams. In developed areas with easily flooded rainwater drainage systems, additional urban flooding is also possible. Sites downstream from reservoirs or large rivers may experience flash flooding after relatively short periods of heavy rain. Landslides are still possible in hilly or hilly areas, especially where heavy rainfall has saturated the soil. Power outages and disruption of telecommunications services are likely to occur when floods, landslides or strong winds affect utility networks.
Flood waters and debris flows can render some bridges, railways or roads impassable, affecting road travel in affected areas. Slanting on road surfaces may cause dangerous driving conditions on regional highways. Authorities can temporarily close some of the lower flooded roads.
Severe weather can also cause intermittent flight delays and cancellations at airports in the area, although they are not likely to be severe or long. Floods can disrupt regional railways; Freight and passenger train delays and cancellations are likely in areas with heavy rain and inundation tracking. Local business disturbances may occur in low-lying areas.
Monitor local media for weather updates and related warnings. Confirm all transfers and opening times reservations before you travel. Make provisions for domestic travel delays and potential disruptions to the supply chain where flooding has been forecast. Do not drive on flooded roads. Charge battery-powered devices in the event of prolonged power outages.
National Institute of Meteorology (Inmet)