Teleconnections - Interactive ENSO Rainfall Map
Gridded phase-composite rainfall indicators on an interactive globe. Drag to rotate · Scroll to zoom · Click a country to drill down.
What am I looking at?
A teleconnection is the tendency for El Niño or La Niña in the Pacific to shift weather far away. Each map shows, for the chosen ENSO phase and season, how a rainfall, drought or heat indicator typically departs from normal - built by compositing every past event of that phase. Set the source, season, phase and hazard above: blue/green areas are wetter or cooler than usual, brown/red drier or hotter.
That chain is a teleconnection - how a shift in the Pacific reaches regions far away. The maps below show step 3 for the phase and season you choose.
Data sources. CHIRPS - satellite-plus-gauge rainfall observations. ERA5 - reanalysis used for the heat indices. CESM2 - a 50-member climate-model ensemble, useful where the observed record is short.
Hazards and indices. Wet: RX10day (heaviest 10-day rainfall) and totals. Drought: CDD (longest run of consecutive dry days). Heat stress: WBGT - wet-bulb globe temperature, a combined heat-and-humidity index for human heat danger - and UTCI, a similar "feels-like" comfort index.
Anomaly vs absolute. "Anomaly" is the difference from ENSO-neutral years, so it isolates the El Niño / La Niña effect. "Absolute" is the raw value during that phase.
Reading dry regions. Over hyper-arid areas such as the Sahara or Arabian Peninsula, rainfall is near zero, so a rainfall anomaly there is statistically noisy and not physically meaningful - treat colour over deserts with caution. Where shown, robustness dots mark pixels at which fewer than 60% of events agree on the sign of the change.
Forecast × Impact Signal
Current SEAS5 forecast probabilities weighted by historical ENSO impact direction for the selected region and season.
| Lead | Valid month | Most likely phase | Phase prob. | Historical impact signal | Action signal |
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