Individual analysis by river basin

Tapajós River Basin

Updated on May 14, 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 165 and 186 mm being considered normal (reference quantiles 42.5% and 57.5%). On May 14, 2025, 130 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 -1.3, classifies the basin as dry condition. 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 dry.

Climatology

165 mm - 186 mm

Observed 30 days

130 mm

Anomaly index

-1.3

Basin classification

dry condition

Forecast

behavior close to normality or a tending to be dry