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Time series plot of western equatorial Indian Ocean (WIO) (10°N–10°S, 40°–64°E) and equatorial eastern-central Pacific Ocean SST (NINO, 3.4: 5°N–5°S, 170°W–120°W) anomalies. Anomalies are depicted as degree Celsius departures from their respective climatological baseline periods. Convergence of anomalous positive SSTs between the 2 regions is associated with above-normal rainfall over the RVF endemic region of the Horn of Africa.
