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Torrential rain was accompanied by enhanced lightning activity as well. European Severe Weather Database (ESWD) provides some extra reports of excessive rain, large hail and even tornados/waterspouts. It's interesting to note that probability of lightning was pretty accurate while convective EFIs failed to provide a signal for the most affected areas in Greece. It gave good guidance over NW Turkey though. One of the reasons for why the EFI failed to fail provide a signal might be the fact that we use already diagnosed CAPE and CAPE-shear as a model output while lightning density is computed directly within the convection scheme. As a result, it can happen that in case of very active long-lasting convection, CAPE could be released constantly without peaking at any extreme values, especially at discrete time steps where the CAPE is provided as a model output (which is every hour), so that it could be shown on the EFI.
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