This looks more like the typical springtime GFS error.
Flip to a ridgy pattern for the 2nd half of April is likely IMO, however I’m skeptical this is how it will look at 500mb. Classic springtime GFS.
Re: GFS. Easy way to tell in 90% of cases is, if the solution involves a ULL trapped underneath a horseshoe of ridging, it’s probably typical GFS goofiness.
If it’s a clean ridge without a trapped ULL, it’s much more likely to be a legitimate outcome. Of course neither case is 100% certain/foolproof.
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