Seems like since Friday and throughout the weekend there may have been some update pushed out by Google to its search ranking algorithm. There is chatter and there are third-party tracking tools that seem to suggest there was some sort of update. Google has not confirmed any Google algorithm update from this weekend, so this would be Google updating as normal to them.

Again, I first started seeing chatter on July 31st, Friday, late morning, New York time. Here is some of the chatter from WebmasterWorld and Black Hat World followed by some social media chatter:

Here are screen shots from some of the tools, notice the spikes over the weekend.

SEMRush – notice July 31st and now back up this morning:

Cognitive SEO – July 31st and August 1st:

RankRanger – same with July 31st and August 1st:

Advanced Web Rankings shows it on August 1st:

Algoroo shows it on July 31st:

SERPMetrics on July 31st:

Mozcast shows it on the 30th, which is normal based on how they report things based on their time zone:

Did you notice ranking changes since Friday and through the weekend?

Forum discussion at WebmasterWorld and Black Hat World.