I am seeing signs both in terms of early chatter within the SEO community and industry and the automated tracking tools of an Google search ranking update brewing. The update may have started some time last night, but let's say this is currently an unconfirmed August 1st update.

Google has not pre-announced any core update today but who knows.

Let's not forget the last August 1st update that was on August 1, 2018, which I ended up naming the Medic update and Google later confirmed as a core update. This August 1, 2019 unconfirmed (currently) update does not currently seem as big as the one a year ago - so no need to panic.

Here is some of the chatter from the ongoing WebmasterWorld thread:

Anyone seeing anything mental this morning?

Yes. Traffic just fell for me drastically today.

Our average rank has completely dropped

It is still early but I am seeing some people asking me on Twitter:

@rustybrick Hi Barry, you noticed any signs of a G update? just seeing some earlier signs for some UK based SERPS I follow — aidan ward (@aidanward25) July 31, 2019

Here are screen shots from the automated tools:

Mozcast:

SERP Metrics:

Algoroo:

Advanced Web Rankings:

AccuRanker:

RankRanger:

Cognitive SEO:

SEM Rush:

Are you noticing traffic and ranking changes today from Google search?

Forum discussion at WebmasterWorld.

Update: Google has not confirmed this update but did say that they do not confirm smaller core updates. As I watch this update and the chatter and tracking tools, it does seem like this is indeed starting to heat up.