It has been almost a month since we reported Google ranking changes, which is rare and it looks like many folks are seeing changes in the core web search results as of early this morning. This is unrelated to the major local ranking changes I reported this morning, which kicked off yesterday. The core web search changes seem to be just happening as of this morning.

There is definitely some early chatter from the SEO community around a possible update. We have threads at WebmasterWorld, Google Webmaster Help forums and complaints on Twitter. Let me quote some of these statements:

But not all are seeing the changes, I asked Glenn Gabe and he said nope:

Most of the tracking tools have not updated for September 2nd data yet but some have and here SERP Metrics, Alogoroo, and Accuranker show fluctuations:

Update: Mozcast updated at 10am ET and it is showing significant weather also:

I have no confirmation from Google on there being an update or not. I am just seeing some early signs of a potential update based on some of the tools lighting up and based on the community chattering about it this morning. Again, this is unrelated to the local pack algorithm update we reported this morning as well.

Forum discussion at WebmasterWorld, Google Webmaster Help forums and Twitter.

Update: Google told us this was not Penguin related.