Individual analysis by river basin
Updated on February 18, 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 273 and 300 mm being considered normal (reference quantiles 42.5% and 57.5%). On February 18, 2026, 267 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 -0.4, classifies the basin as normal contition. In the coming weeks, climate behavior indicates a increase in rainfall volumes, the sub-seasonal forecast model suggests behavior close to normality or a tending to be dry.
Climatology
273 mm - 300 mm
Observed 30 days
267 mm
Anomaly index
-0.4
Basin classification
normal contition
Forecast
behavior close to normality or a tending to be dry