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Yet another multi day severe weather threat, I’d be more concerned about these. Parameters such as lapse rates and deep layer moisture are naturally much more significant in late April into May.
The subtropical jet becomes weaker and move’s more poleward during the late spring and onwards and won’t be restricting upper level moisture returns, and instead will aid in those.
And of course the tropopause rises as well during this time period, which allows for deeper convection and colder cloud tops. Rising air parcels have a lot more breathing room with a naturally higher Equilibrium layer.