Campinas region has a warning for storms with risk of hail and winds of up to 100 km/h; This week should be heavy rain
Quick Look
Campinas and the region are expected to face storms with a risk of intense rain, hail, lightning and strong winds until the end of the week, according to Cepagri and Inmet, which issued yellow and orange alerts for Tuesday and Wednesday.
AI-generated summary
Why It Matters
A stationary cold front between the coast of São Paulo and Rio de Janeiro, associated with high humidity and atmospheric circulation at altitude, is favoring the formation of thunderstorms in the Campinas region.
Cloudy weather in Campinas (SP) — Photo: Carlos Bassan/Prefeitura de Campinas
Cities in the Campinas region are expected to face a week marked by storms, with the risk of intense rain, hail, lightning and strong gusts of wind. According to Unicamp's Center for Meteorological and Climate Research Applied to Agriculture (Cepagri), episodes of torrential rain are expected to last until the end of the week.
The instability is expected to worsen on Tuesday (13). Cepagri reported that storms could reach greater severity, with increased chances of torrential rain, lightning, intense gusts of wind and hail. Temperatures can vary between 18°C and 30°C.
On Wednesday (14), the tendency is for cloudy skies and the possibility of rain. According to the center, the biggest accumulations of the week could occur between Wednesday and Friday, a period in which precipitation is expected to become more frequent and voluminous.
Inmet issues alerts for Campinas
The National Institute of Meteorology (Inmet) issued two alerts that include Campinas:
Yellow alert: valid for Tuesday (13), indicates potential danger for storms.
The warning predicts rain of between 20 and 30 millimeters per hour or up to 50 millimeters per day, winds between 40 km/h and 60 km/h and the possibility of hail.
Orange alert: classified as dangerous, comes into force on Wednesday (14).
The forecast is for rain between 30 and 60 millimeters per hour or up to 100 millimeters per day, in addition to winds between 60 km/h and 100 km/h and hail. Inmet warns of the risk of cuts in electricity supply, falling trees, flooding and damage in rural areas.
What explains the change in time?
Satellite image for the early morning of this Monday (12), in the Campinas region. — Photo: Reproduction/Cepagri
According to Cepagri, the action of a stationary cold front between the coast of São Paulo and Rio de Janeiro, associated with the high availability of humidity and the pattern of atmospheric circulation at altitude, favors the formation of storm clouds in several regions of São Paulo.
The combination of heat and humidity also maintains the feeling of stuffiness and creates favorable conditions for the rapid development of thunderstorms, which can occur in a localized manner, but with a high potential for impact.
Recommendations
Cepagri advises the population to seek shelter when they hear thunderstorms, avoid staying under trees during storms and not face flash floods or flooded areas.
Inmet also recommends unplugging electrical appliances during more intense episodes and seeking information from Civil Defense and the Fire Department in case of emergency.
Forecast for Campinas
Tuesday (13) ⛈
Minimum: 18°C | Maximum: 30°C
Risk of stronger storms, with hail and wind
Wednesday (14) ☔
Minimum: 19°C | Maximum: 27°C
Rain can occur at any time of the day, with the highest rainfall expected for the week.
VIDEOS: Everything about Campinas and the region
What to Watch
AI outlook — possibilities, not facts
The biggest rainfall of the week is expected to occur between Wednesday and Friday.
Likely · Within days
Open Questions
- What will be the exact impact of the storms on local infrastructure?
- Is there a risk of significant damage in rural or urban areas?
- Will the alerts be updated in the next few days?







