Individual analysis by river basin
Updated on April 29, 2026
Accumulated precipitation vs climatology
30 days
Comparison between climatological quantiles and observed accumulation.
Anomaly and trend
14 to 28 days
Anomaly, forecast and observed indicators.
Basin highlights
The climatology of the period under analysis indicates rainfall with records varying between 106 and 123 mm being considered normal (reference quantiles 42.5% and 57.5%). On April 29, 2026, 99 mm of average accumulated precipitation was observed over the basin in 30 days, the calculation of the average of the categorized anomaly index in the basin area the value of -0.5, classifies the basin as tendency to dry contition. In the coming weeks, climate behavior indicates a decrease in rainfall volumes, the sub-seasonal forecast model suggests behavior close to normality or a tending to be rainy.
Climatology
106 mm - 123 mm
Observed 30 days
99 mm
Anomaly index
-0.5
Basin classification
tendency to dry contition
Forecast
behavior close to normality or a tending to be rainy