Left Outer Join Help

I have put together what seems to be a fairly simple left outer join query but it is acting like a full query.  

I am looking for all locations from A and the count of them from B.  I never get a count of 0 however. Not all locations have the matching “watchdog” messages so I would expect to see some 0 counts in there.

Any ideas?

Thanks in advance for your time.

Bob

select a.location
      ,coalesce(count(b.message),0) as Watchdog_Count
from events_pr.thdks_app_logs a
     left outer join events_pr.thdks_app_logs b 
       on a.location = b.location 
where
    b.message like '%msg="Received alert" alert=Watchdog%'   
group by 1
order by 2,1
limit 2500

select a.location
      ,coalesce(count(b.message),0) as Watchdog_Count
from events_pr.thdks_app_logs a
     left outer join events_pr.thdks_app_logs b 
       on a.location = b.location AND b.message like '%msg="Received alert" alert=Watchdog%'