This is not "tanking". It moves from positive to neutral negative. If the negative values reflected the positive, I'd say yes...it's not.
On that note, I've seen Twitter accounts create composites based on a -EPO to push their agenda. At the same time they have a +PNA in there. Let's be realistic instead of hype.
When looking at operational tellies, remember my rule...
"Forecast high, verification low. Forecast low, verification high."
Hr 96 the euro has energy hitting northern CA. GFS does not. It is energy separate from what is hitting BC/WA.
By 120 off on different paths
Then hr 150 is way different.
I guess we'll know in a few days if that energy enters N CA