German phrase
Das ist vor allem bei ~ der Fall.
Meaning
That is especially the case with ___
When to use it
It applies especially here. The tone is factual and slightly formal.
Example dialogue
Brauchen wir einen Plan B fürs Picknick?
Do we need a backup plan for the picnic?
Das ist vor allem bei starkem Regen der Fall.
That is especially the case with heavy rain.