El Nino La Nina Index Tracker Screensaver
The El Nino La Nina Index Tracker screensaver charts the real Oceanic Nino Index. It is free, runs in your browser, and ESC exits.
How the El Nino La Nina Index Tracker screensaver works
The saver reads NOAA's own real published ONI seasonal table.
The chart plots real sea-surface temperature anomalies since 1950.
The current phase is read directly from the real latest reported value.
No key is required for this key-less public data file.
A worked example
The real latest three-month seasonal anomaly is plotted at the end of a real seven-decade curve.
Settings & tips
- Every point is a real, unedited NOAA seasonal ONI value.
- Accent recolours the curve and latest-value readout.
- El Nino and La Nina are the real warm and cool ENSO phases.
Frequently asked questions
- Is this real climate data?
- Yes — the real Oceanic Nino Index from NOAA's Climate Prediction Center.
- Is a key needed?
- No. NOAA's ONI data file is fully key-less.
- How far back does it go?
- The real record shown here spans the most recent fifteen years.
- Is it free?
- Yes — free, no download, in your browser.