Individual analysis by river basin
Updated on March 11, 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 257 and 280 mm being considered normal (reference quantiles 42.5% and 57.5%). On March 11, 2026, 173 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 -2.2, classifies the basin as very dry condition. In the coming weeks, climate behavior indicates a increase in rainfall volumes, the sub-seasonal forecast model suggests very dry behavior or a tending to be very dry.
Climatology
257 mm - 280 mm
Observed 30 days
173 mm
Anomaly index
-2.2
Basin classification
very dry condition
Forecast
very dry behavior or a tending to be very dry