Possible Clues:

• Large snow or rock fall
• Snow in turmoil, representing canal in A Coat of Varnish with energy
• Snowdrop offered by Boyle
• Landslide engendered by hail, trapping man by church
• Flood or upsurge of volcanic material before long, around noon
• Alternative vote leading to male revolutionary's downfall
• Relative of a mudslide
• Molten lava he can make slide down the mountain
• Sudden fall of snow disturbing a mostly calm haven
• Potentially disastrous slip from a Blue Peter presenter he can put right