Civil Defense issues severe warning of rain with lightning, wind and hail in the Campinas region

Civil Defense issued a severe warning of heavy and persistent rain in the Campinas region this Friday afternoon (9). According to the statement, there is lightning, wind and hail.

The statement asks people to seek shelter. Until the last update of this report there was no information about events related to rain.

Updated report

Heat

According to the Center for Meteorological and Climate Research Applied to Agriculture (Cepagri), at the State University of Campinas (Unicamp), temperatures in Campinas are expected to remain high at least until Wednesday (14). Until Saturday (10) the heat may even intensify.

For Sunday (11), there is a forecast of instability and moisture transport mainly over the state's coast, but the increase in cloudiness in the Campinas region should contribute to milder temperatures.

After Sunday, the tendency is for temperatures to rise again. This forecast, however, is considered medium to long term — above 72 hours — and is subject to change.

On October 14, meteorological models indicate the possibility of a frontal system that could favor the occurrence of rain in the Campinas region. This is when a respite from the "heat" is expected.

But why is it hot?

According to meteorologist Diego Santos, from Cepagri, the heat can be explained by the removal of a cold front that passed through the state of São Paulo last Sunday (4).

The gradual modification of this air mass, which previously allowed the entry of cold air and now favors the availability of solar radiation, causes temperatures to increase.

"This warming is mainly associated with the greater availability of solar radiation and the conditions of atmospheric circulation, which favor the transport of warmer air. Today, for example, the reduced presence of clouds allowed a greater incidence of solar radiation, contributing to the rise in temperatures during the afternoon", explained Diego.

Although the temperature rose, this Thursday was not the hottest day of the year, which occurred on September 29th at 34.3°C.