Question: What will be the highest weekly Niño 3.4 sea-surface temperature anomaly that NOAA's Climate Prediction Center publishes for the four weeks centered on Oct 21, Oct 28, Nov 4 and Nov 11, 2026?

Resolution source: the CPC weekly index file https://www.cpc.ncep.noaa.gov/data/indices/wksst9120.for (columns: Niño1+2, Niño3, Niño3.4, Niño4; the anomaly is the number after each SST, on the 1991–2020 base). I take the largest Niño3.4 anomaly among the rows dated 21OCT2026, 28OCT2026, 04NOV2026 and 11NOV2026, as shown when I check the file on or after Nov 17, 2026. CPC prints one decimal, so the answers are one decimal each. If the file is down, I use CPC's weekly ENSO update slides (https://www.cpc.ncep.noaa.gov/products/analysis_monitoring/lanina/enso_evolution-status-fcsts-web.pdf), which carry the same weekly numbers.

Where it stands: the last five weeks read +3.0, +3.1, +3.2, +3.3, +3.3 (weeks of Sep 16 → Oct 14). That is already above the weekly peaks of the 1997 and 2015 super El Niños. Copernicus called September's Niño 3.4 value an all-time high (https://climate.copernicus.eu/global-temperatures-remain-over-15degc-above-pre-industrial-levels-during-second-warmest-september). Strong events usually peak in November–December, but the climb flattened in the last week.

Earlier weeks (before Oct 21) don't count, even if they are higher. Trading closes Nov 15, before the last week is published. I won't trade in this market.