Ranking volatility hits September 23-24, spam update confirmed

Search Engine Roundtable reported significant Google ranking volatility starting around 23 September 2026, possibly 22 September, and continuing through 24 September. An update note on the report says Google confirmed the September 2026 spam update started to roll out that day.

What the tracking tools showed#

The report lists volatility spikes across AccuRanker, Algoroo, AWR, CognitiveSEO, DataForSEO, Mangools, Mozcast, Semrush, Serpstat, SimilarWeb, Sistrix, Wincher, Wireboard and Zutrix. Many independent tools moving together is a stronger signal than one tool alone, but it measures SERP movement, not the cause. The report adds that chatter was generally slowing as Google had been sending less and less traffic to sites.

This was not the first spike of the month. The same outlet had reported volatility from 4 to 13 September and again on 15 September, which we covered in September 15’s ranking volatility spike, when no update was confirmed.

What Google confirmed#

Google’s Search Status Dashboard lists the September 2026 spam update with a start date of 24 September 2026 and no end date yet. It is the third spam update on the dashboard since June: the June 2026 spam update started on 24 June and ran for 2 days and 1 hour, and the August 2026 spam update started on 18 August and ran for 2 days and 16 hours, as covered in our August report. Those durations do not predict this one; they only show recent spam updates have been short.

Note the dates. The dashboard start is 24 September, while the tool spikes began a day or two earlier. Movement on 22 or 23 September is not attributed to the spam update by any source here.

What site owners reported#

WebmasterWorld posts quoted in the report described “Discover down 70%”, traffic down 80% after 11 hours, and losing about 20% of top ranking terms. These are individual accounts. The report does not verify them, and they say nothing about which sites or what content was affected.

What to do if you lost traffic#

Google’s spam updates documentation says sites that see a change after a spam update should review its spam policies to make sure they comply. It sets expectations on recovery: making changes may help a site improve if Google’s automated systems learn over a period of months that the site complies. And where the systems remove the effect of spammy links, any ranking benefit those links generated is lost, not restored later.

Why we care#

The order of events matters. The volatility was visible in tools first, and the confirmation came as an update note on the report. Sites that lost traffic on 23 or 24 September should compare their own data against those dates before attributing the drop to the spam update. We have no scope, duration or affected-content detail from the sources, so we are not offering any.