Heavy rain and winds of 100 km/h: see which 62 cities in Paraná were left out of the storm warning for the holiday

After a weekend marked by the return of the sun, Paraná is expected to record significant rain again this Monday (2), when the All Souls' Day holiday is celebrated. So much so, that the National Institute of Meteorology (Inmet) issued two alerts for the state.

One is yellow and warns of the potential danger of intense rain in all municipalities; the other is orange and indicates the danger of storms with even heavier rain, winds of up to 100 km/h and a chance of hail in most of the state. Only 62 cities in the south, central-south and east were left out of the orange alert.

According to Inmet, in all cities in Paraná, rain can accumulate up to 30 mm per hour or up to 50 mm per day, and winds can reach up to 60 km/h. For those under orange alert, the accumulation can jump to up to 60 mm/h or 100 mm/day, and winds can reach 100 km/h.

Simepar adopts a table to interpret the strength of storms. If in a period of 6 hours it rains less than 0.2 mm, the rain is not even considered. Between 0.3 mm and 2.5 mm is considered a drizzle. It becomes light rain when the accumulation in 6 hours is between 2.5 mm and 10 mm. From there up to 25 mm, the rain is moderate. From 25 mm to 50 mm is considered heavy rain, and above 50 mm is considered extreme rain.

On Saturday (31) Inmet had issued an alert for this Sunday (1), but ended up canceling it. Now, the two issued for Monday (2) remain and also two yellow ones for Tuesday (3) and Wednesday (4).

The Environmental Technology and Monitoring System (Simepar) explains that the expectation is, throughout this Sunday (1), instability will increase throughout the day due to yet another low pressure system that intensifies in neighboring countries and favors an increase in humidity also over the south of Brazil.

"During the morning there are more clouds in the east and north of Paraná, with the possibility of very occasional rain, especially near the state of São Paulo. From the afternoon onwards, areas of instability develop in several sectors, with the risk of storms in the interior. Most events act irregularly, that is, it should not rain in all municipalities in the same region, for example. However, in some cities the rain should be heavy, accompanied by atmospheric discharges and gusts of wind"

On Monday (2), explains the agency, the weather remains quite unstable. The ingress of heat and humidity from the North of Brazil intensifies, favoring the formation of several areas and instability lines.

"In the state, the rain is heavier, with thunderstorms, between dawn and morning, however in the afternoon there is still the possibility of occasional rain. It remains muggy in several sectors."

Meteorologists conclude that on Tuesday (3) the presence of a low pressure system between neighboring countries and southern Brazil continues to favor the development of areas of instability over Paraná, and that, between Wednesday (4) and Thursday (5), the passage of a cold front over the region also contributes to increasing the risk of storms.