The strengthening El Niño over the Pacific Ocean is currently generating many headlines as the current forecasts have the strength reaching levels not seen before since records began in 1950. In fact, one forecaster referred to this situation as a "Godzilla El Niño." The featured chart looks at the combination of August Southern Oscillation Index (SOI) and September plus October average temperature and total precipitation for Iowa. The color of the dots represent the SOI index. The relationship shown is not clear cut. You can generate this chart online and compare the SOI value from some number of trailing months to a summary number of months of your choice.

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Tags:   elnino