As intense storms are set to hit major Northeast cities, over 125 million Americans remain under a severe weather threat. Wildfire smoke is expected to return briefly, with air quality alerts issued across several regions. Despite improvements earlier in the day, conditions are likely to worsen with the threat of scattered severe thunderstorms later on Saturday. The forecast indicates a shift from smoky skies to potential severe storms, raising concerns for residents as humidity increases and storm chances rise. Meteorologists emphasize the urgency of the situation, urging caution for those affected by the hazardous air quality.