FAO is saying that the situation is getting even worse, if that is even possible. 3.1 million people are acutely malnourished, or 25% of Somalia's population. Rains not expected until mid October- early November. I think that the majority of the country may be in phase 4 by then.
http://www.fsnau.org/in-focus/fsnau-fews-net-2017-post-gu-technical-release-final-31-aug-2017
http://www.fsnau.org/in-focus/fsnau-fews-net-2017-post-gu-technical-release-final-31-aug-2017