2026 El Nino Southern Oscillation Weekly Tracking
Additional Information
July 27, 2026
2026 is starting at -0.6 degree C similar to 1872, 1899. 1939, 1955. 1986 and 2018. These were years following La Nina years. Some years ended in weak El Nino and some in strong La Nina. Current trend is the 1965 strong El Nino year. The direction of the tracking line has turned sharp and crossed towards the positive cumulative temperature quadrant. Warming is cotinuing and strong El Nino developing with likely of very strong El Nino. During El Nino, South Florida dry season is likely wet. Ethiopia's droughts are associated with strong El Nino. The Blue Nile Basin rainfall could be drier than normal.
Annual Summary - 2026
Abtew, W. and P. Trimble. 2010. El Niño Southern Oscillation Link to South Florida Hydrology and Water Management Applications. Water Resources Management, 24(5):4255-4271,
Abtew, W., A. Melesse and T. Dessalegne. 2009. El Niño Southern Oscillation link to the Blue Nile River Basin Hydrology. Hydrological Processes. Vol. 23:3653-3660; DOI:10.1002/hyp.7367
