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Major algorithm update completed July 17 shows HCU recovery patterns and AI Overview impact across verticals.
Google completed its June 2025 core update on July 17, marking the end of one of the most significant algorithm adjustments in recent months. According to the Google Search Status Dashboard, the update required 16 days to fully implement after beginning on June 30. Industry experts documented extensive ranking volatility affecting websites globally throughout the rollout period.
The June update represented Google’s second major core algorithm change of 2025. Multiple tracking platforms detected substantial ranking movements beginning July 2, approximately 48 hours after the initial announcement. According to Glenn Gabe, a prominent SEO analyst who tracked the update’s progress through daily social media posts, “This was a red-hot update that rolled out on June 30 right before the July 4 holiday weekend.”
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Sites severely impacted by the September 2023 Helpful Content Update experienced their first significant ranking improvements in nearly two years. Gabe documented recovery patterns across a tracked list of 400 websites that were “obliterated” by the original HCU implementation.
“Sites that were obliterated by the September 2023 Helpful Content Update (HCUX) finally started surging back,” Gabe noted in his analysis. “And some were surging back from the dead (literally back from no visibility at all).”
Recovery patterns emerged primarily between July 8-9, several days after initial ranking movements from the June update began. This timing indicates Google updated specific systems during the core update implementation rather than at the beginning of the rollout period.
The recovered sites showed varying degrees of improvement. “Many aren’t back to where they were before September 2023, but there are some full (or near-full) recoveries in the mix,” according to Gabe’s tracking data. However, not all previously impacted sites benefited from the June adjustments, with some experiencing additional ranking declines.
Websites experiencing negative core update effects simultaneously saw reduced visibility in AI Overviews. According to Gabe’s analysis, “sites negatively impacted by the June core update saw visibility in AI Overviews drop as well.” This correlation demonstrates how Google’s core ranking systems influence multiple search surfaces.
The connection extends beyond traditional web search results. “Broad core updates can impact all Google surfaces, including web search, image search, video search, Google News, top stories, the News tab in Search, and Google Discover,” Gabe explained. AI Overviews and AI Mode function within Google’s “Web Search” framework and rely on the same core quality systems affected by broad updates.
Several publishers reported decreased clicks and impressions in Google Discover concurrent with core update implementation. This pattern aligns with Gabe’s warning about maintaining search quality: “DO NOT ignore Google Search and let quality drop. If you do, then you leave your site susceptible to impact from a broad core update.”
Significant ranking fluctuations occurred throughout early and mid-June before the official core update announcement. According to Gabe’s analysis, many websites previously affected by reviews updates experienced substantial movement during this period.
“Based on my analysis, I believe Google could have pushed a big reviews system update behind the scenes,” Gabe concluded after examining pre-update volatility patterns. Google has maintained since April 2023 that reviews system updates would occur “on a regular and ongoing basis” without individual announcements.
The pre-update movement contradicts assumptions that core updates begin only when announced. Google representatives have clarified that broad core updates commence when officially announced, while smaller system updates can occur independently with significant impact potential.
Your Money or Your Life content categories experienced particularly high volatility during the June update. Health, medical, finance, and legal websites demonstrated substantial ranking changes throughout the implementation period.
“Sites containing YMYL content can always see a lot of volatility during broad core updates, but I saw a ton of volatility with the June core update,” Gabe observed. These content categories face algorithmic scrutiny due to their potential impact on user welfare and financial decisions.
Google evaluates YMYL sites using enhanced quality standards that extend beyond content creation. “Remember, ‘quality’ is more than just content,” according to Gabe’s analysis. “Google has explained it’s about content, the user experience, how things are presented, and more.”
The evaluation process incorporates Navboost, Google’s system tracking 13 months of user interaction signals. This technology enables Google to distinguish between satisfied and dissatisfied users based on behavioral patterns rather than content analysis alone.
Some websites achieved recovery from March 2025 core update impacts during the June rollout. According to Gabe’s analysis, dramatic improvements occurred for sites that successfully moved beyond unclear quality signals.
“You want to get clearly out of the gray area from a quality perspective,” Gabe explained regarding long-term ranking stability. “If not, then you can see surges and drops with every core update.”
Sites remaining in algorithmic gray areas face continued volatility as Google adjusts system parameters. When search engineers modify ranking dial settings, websites with ambiguous quality signals can experience significant movement in either direction.
The recovery timeline requires patience and sustained improvement efforts. “You will typically need another broad core update to see recovery so focus on long-term improvements,” Gabe recommended for affected site owners.
The June update required longer implementation than initially projected. Google specified the rollout could take up to three weeks but completed the process in exactly 16 days and 18 hours. This timeline represents typical duration for major core updates affecting multiple ranking systems simultaneously.
Industry tracking tools including Semrush, Advanced Web Rankings, Mozcast, Sistrix, Cognitive SEO, SimilarWeb, Accuranker, Mangools, Wincher, Data For SEO, SERPstat, and Algoroo documented volatility patterns throughout the implementation period.
Not all websites experienced traffic decoupling between clicks and impressions. Some sites in specific niches maintained traditional correlation patterns where AI Overviews trigger infrequently, preserving normal click-through relationships.
The June 2025 core update reinforces Google’s emphasis on comprehensive quality evaluation rather than isolated ranking factors. According to previous PPC Land analysis, brand authority signals may influence algorithmic assessment more than previously understood.
Recovery strategies must address multiple quality dimensions simultaneously. The “kitchen sink” approach involves improving content quality, user experience, advertising implementation, affiliate practices, and technical SEO problems. This comprehensive methodology aligns with Google’s stated preferences for holistic site improvements.
The update timing suggests Google will continue implementing core adjustments throughout 2025. “I do believe we’ll see another core update, or two, in the fall,” Gabe predicted based on historical patterns and current implementation frequency.
Marketing professionals should prepare for continued algorithmic refinements affecting multiple search surfaces. The integration between core ranking systems and AI Overview visibility requires optimization strategies addressing both traditional search results and emerging search formats.
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Core Update: A core update represents a significant modification to Google’s fundamental ranking algorithms that affects how websites are evaluated and positioned in search results. These updates differ from the thousands of minor adjustments Google implements daily because they modify the essential systems that determine search rankings. Core updates typically occur every few months and require public announcement due to their broad impact across multiple industries and website types. The changes affect how Google interprets content quality, relevance, and authority signals.
Helpful Content Update (HCU): The Helpful Content Update, first announced by Google in August 2022, was initially described as a sitewide signal designed to evaluate content helpfulness on a document level. The September 2023 implementation severely impacted numerous websites, with many sites experiencing dramatic traffic losses that persisted for nearly two years. The system was later integrated into Google’s core ranking infrastructure during the March 2024 core update, removing the standalone HCU classifier while maintaining its evaluation criteria within broader algorithmic assessments.
YMYL (Your Money or Your Life): YMYL content encompasses topics that could significantly impact a person’s health, financial stability, safety, or happiness. These categories include health and medical information, financial advice, legal guidance, news about important topics, and safety information. Google applies heightened quality standards to YMYL content due to its potential consequences for users’ wellbeing. Sites focusing on YMYL topics face more stringent algorithmic evaluation and require demonstrated expertise, authoritativeness, and trustworthiness to maintain strong search visibility.
AI Overviews: AI Overviews represent Google’s artificial intelligence-powered summaries that appear directly in search results, providing comprehensive answers to user queries without requiring clicks to source websites. These features operate within Google’s Web Search framework and rely on the same core quality and ranking systems affected by broad core updates. The integration means that websites experiencing core update impacts will see corresponding changes in AI Overview visibility, creating additional traffic implications beyond traditional search result positioning.
Ranking Volatility: Ranking volatility refers to significant fluctuations in website positions within search results during algorithm updates or system changes. Industry tracking tools measure these movements across millions of keywords to identify when Google implements algorithmic adjustments. High volatility periods indicate substantial ranking redistributions affecting multiple websites simultaneously, often serving as early indicators of core update implementations before official announcements from Google.
Search Visibility: Search visibility represents a website’s overall presence and prominence within search engine results pages across its target keywords and topics. This metric encompasses ranking positions, featured snippet appearances, and presence in specialized search features like image search, video results, and news sections. Changes in search visibility during core updates indicate how algorithmic adjustments affect a site’s capacity to attract organic traffic from search engines.
Recovery Patterns: Recovery patterns describe the specific ways websites regain search rankings and traffic following negative impacts from algorithm updates. These patterns vary significantly between different types of sites and update categories, with some websites achieving partial recovery while others experience complete restoration or continued decline. Understanding recovery patterns helps SEO professionals develop appropriate remediation strategies and set realistic expectations for improvement timelines.
Algorithmic Gray Areas: Algorithmic gray areas represent ambiguous quality zones where websites fail to clearly signal their value to Google’s ranking systems. Sites operating in these zones experience continued volatility with each core update as algorithmic adjustments can push them toward either positive or negative ranking changes. Escaping gray areas requires comprehensive quality improvements that clearly demonstrate content value, user satisfaction, and topical expertise to achieve stable long-term rankings.
Quality Signals: Quality signals encompass the various indicators Google’s algorithms use to assess website and content value, including user experience metrics, content depth and accuracy, author expertise, site authority, and behavioral data. These signals extend beyond traditional SEO factors to include user interaction patterns tracked through systems like Navboost, which monitors 13 months of user behavior data. The complexity and interconnection of quality signals require holistic optimization approaches rather than isolated tactical improvements.
System Updates: System updates refer to modifications Google makes to specific components within its broader ranking infrastructure, often occurring independently of announced core updates. These adjustments can significantly impact certain website categories or content types while remaining largely invisible to the broader SEO community. The reviews system update suspected during early June 2025 exemplifies how Google continuously refines individual algorithmic components without public announcement, creating ranking changes that may be attributed to other factors.
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Who: Google implemented the June 2025 core update affecting website owners, SEO professionals, and digital marketers globally, with analysis provided by industry experts including Glenn Gabe, Barry Schwartz, and Marie Haynes.
What: The June 2025 core update represents Google’s second major algorithm adjustment of 2025, causing significant ranking volatility across websites and industries while enabling partial recovery for sites previously impacted by the September 2023 Helpful Content Update.
When: The update began rolling out on June 30, 2025, at 07:30 US Pacific time, with completion occurring on July 17, 2025, at 01:00 Pacific time after exactly 16 days and 18 hours of implementation.
Where: The algorithmic changes affected search results globally, with tracking tools detecting impacts across multiple languages, geographic regions, and Google surfaces including web search, image search, video search, Google News, and AI Overviews.
Why: According to Google’s standard position, core updates aim to improve search result quality and better surface relevant content, though the June update specifically demonstrated adjustments to systems evaluating content helpfulness and enabled recovery for sites previously caught in algorithmic gray areas.