What does Isaiah 24:7 mean?

This passage describes some cataclysmic event which scatters humanity and leaves the earth destroyed and dying. This immeasurable event will be judgement from the Lord, in response to human sin. The Lord has said the few people who have survived to this point are scorched, implying drought and perhaps an unrelenting sun (Isaiah 24:3–6).

Now Isaiah identifies wine grapes as one example of a crop that doesn't make it through this destruction. The result is that the wine "mourns," or dries up, causing the vines to wither and languish. Those looking for some relief in their suffering from the wine those grapes would have produced are left empty-handed. There will be no alcohol to provide escape from the torment. This probably means that other plants, including food crops and feed for livestock, will be virtually extinct.