The latest Euro Weeklies (yesterday’s run) remain quite active vs active 20 year climo base ACE (>200%) through ~8/24. Then they cool down to close to active avg 8/25-31 (100%). The first stab at 9/1-7 is slightly below the active climo (80%). I wonder if this is MJO related.
Regarding absolute ACE, the very active Aug 18-24 is the most active week through Sept 7. As per what I’ve recently posted, the EW progs did fairly well in general last year overall looking out several weeks when they were consistent for, say, 7 days in a row. They’ve been consistent regarding well above 20 year climo levels of activity for 8/11-8/24 for at least that long.
Regarding 8/25-31, they’ve been near that 20 year climo for 3 runs. So, I still want to see how the rest of this week’s runs look before giving too much weight to its 8/25-31. Of course, 9/1-7 is a total crap-shoot right now with that slightly below 20 year climo being just its first prog.