Individual analysis by river basin

Basins on the left bank of the Amazon River (Amazonas State)

Updated on June 25, 2025

Accumulated precipitation vs climatology

30 days
chart

Comparison between climatological quantiles and observed accumulation.

Anomaly and trend

14 to 28 days
chart

Anomaly, forecast and observed indicators.

Basin highlights

The climatology of the period under analysis indicates rainfall with records varying between 137 and 158 mm being considered normal (reference quantiles 42.5% and 57.5%). On June 25, 2025, 120 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 -0.6, 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 behavior close to normality or a tending to be rainy.

Climatology

137 mm - 158 mm

Observed 30 days

120 mm

Anomaly index

-0.6

Basin classification

tendency to very dry contition

Forecast

behavior close to normality or a tending to be rainy