Individual analysis by river basin
Updated on April 15, 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 195 and 221 mm being considered normal (reference quantiles 42.5% and 57.5%). On April 15, 2026, 147 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 -1.7, classifies the basin as tendency to very dry contition. In the coming weeks, climate behavior indicates a decrease in rainfall volumes, the sub-seasonal forecast model suggests dry behavior or a tending to be dry.
Climatology
195 mm - 221 mm
Observed 30 days
147 mm
Anomaly index
-1.7
Basin classification
tendency to very dry contition
Forecast
dry behavior or a tending to be dry