TL;DR Summary:
Volatility Spike: Google has not confirmed an update, but ranking data shows a two-wave pattern with a shift around September 4, a reversal on September 13, and another spike on September 15.AI Pressure Rising: Google is testing a new AI Mode button inside search results, and publishers like USA TODAY are already feeling search traffic pressure as platforms keep more users on-site.Check Your Data: Review Search Console from September 4 to 15, compare rank-tracking tools for gaps or reversals, and watch EEA product listings if you sell online there.Google Algorithm Update September 2026: Volatility Signal With No Confirmation | Week of September 20 2026
Google has not confirmed an algorithm update this week, but ranking volatility data points to something real happening beneath the surface. The most significant development is a two-phase volatility pattern first flagged around September 4th, reversed on September 13th, then followed by a fresh spike on September 15th. Anyone tracking a Google algorithm update September 2026 story should treat this as unconfirmed but well-documented by independent trackers.
The September 4th Ranking Shift and Its September 13th Reversal
Search Engine Roundtable’s Barry Schwartz reported a ranking blip around September 4th that, in some cases, reverted by September 13th. Glenn Gabe and Marie Haynes independently flagged the same early-September shift, agreeing that an unannounced change likely rolled out. Google has not confirmed any update tied to these dates. If your traffic dropped in early September and recovered by mid-month, this pattern explains it. If it dropped and stayed down, your case did not follow the reversal pattern others reported.
A Second Volatility Spike on September 15th
Volatility tools picked up a separate, unusual spike in chatter and ranking movement on the morning of September 15th. Schwartz’s recap video described this as a second wave following the first week of unusual activity. No official Google statement addressed either spike. Two unconfirmed volatility events inside two weeks means single-day ranking checks are unreliable right now. Pull data across the full September 4–15 window before drawing conclusions about your site’s performance.
Possible Scraper Blocking Coinciding With the Reversal
There is speculation, not confirmation, that Google has tightened blocking of AI scrapers, search scrapers, and third-party tracking tools since around September 13th. This timing lines up with the reversal some sites saw on the same date. If accurate, this would explain why some rank-tracking tools showed inconsistent or reverted data rather than reflecting an actual algorithm rollback. Treat any tool-reported “recovery” from this period with caution until the tools themselves confirm normal data collection resumed.
Google Tests an AI Mode Button Inside Search Results
Per a September 17 report from Search Engine Roundtable, Google is testing an AI Mode button placed directly in the search bar while users are already viewing search results. This extends AI Mode’s presence beyond the homepage and results-page entry points it already occupies. In practice, this gives users another one-click path into AI-generated answers without leaving the results page, which likely reduces clicks to organic listings even further for informational queries.
USA TODAY Restructures Its Audience Team Over Search Traffic Pressure
Internal memos reported by Search Engine Land show USA TODAY reorganizing its audience team, with staff told that search traffic is under pressure and platforms increasingly keep users rather than sending them to publishers. One staffer wrote that “growing audience by producing more content isn’t working the way it used to,” and that “search traffic is under pressure, and platforms are increasingly keeping the user experience rather than sending it back to us.” This is a named, large-newsroom example of AI Overviews and AI Mode changing publisher strategy, not a theoretical concern.
Smaller Google Product Changes From the September 18 Recap
Google made several unrelated product updates this week: free product listings were dropped from EEA regions of Google Search, the Merchant Center API now supports product reviews, adult products require labeling in feeds, Google Ads commerce audience sharing became available, and local businesses were added to supplier and aggregator search units. None of these are tied to the ranking volatility above, but ecommerce sites in the EEA should check whether free listing removal affects visibility this week.
What to do this week
Pull your Google Search Console performance report filtered by date from September 4 through September 15 and compare clicks and impressions day by day, not as a single averaged number, to see if you match the reversal pattern Schwartz described. A tool like Screpy can help here, since it connects directly to Google Search Console and surfaces clicks, impressions, and ranking trends day by day rather than as a single averaged figure.
Check whether any rank-tracking tool you use reported unusual gaps or reverted rankings specifically around September 13th, and cross-reference against a second tool before trusting either one, given the scraper-blocking speculation.
If you run an EEA-based ecommerce store, log into Merchant Center and confirm whether your free product listings are still appearing in Google Search results, since these were reportedly dropped this week.
Review your top 10 organic landing pages for informational queries and note which ones already show reduced click-through in Search Console, since the new AI Mode button test in search results makes further click loss likely for those specific pages.
