Carrot of Truth
War is Peace
The Glowing sea happened because of the sheer quantity of nukes, East Coast canonically got hit harder and the idiots of Vault 76 didn't help by continuing the nukings to kill the Scorch Beasts
So 76 having rad storms is not unusual, they're more nuke happy.
They actually don't survive them without rad away
The glowing sea was only hit by a single bomb, My head cannon is that said bomb hit a nuclear power plant and that is why there is still so much lingering radiation.