Individual analysis by river basin

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

Updated on March 12, 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 216 and 251 mm being considered normal (reference quantiles 42.5% and 57.5%). On March 12, 2025, 324 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 1.4, classifies the basin as rainy. In the coming weeks, climate behavior indicates a increase in rainfall volumes, the sub-seasonal forecast model suggests very rainy behavior or a tending to be very rainy.

Climatology

216 mm - 251 mm

Observed 30 days

324 mm

Anomaly index

1.4

Basin classification

rainy

Forecast

very rainy behavior or a tending to be very rainy