No nukes! Save the world for conventional weapons!
Why not use conventional weapons (a few 'Big Bertha' JDAMS might be the ticket) in the same fashion that several small avalanches are triggered in snow country to prevent one massive avalanche.
What I fantasize about is putting a nuclear weapon inside a hurricane. Would it disrupt it, or would the added heat/energy power the cyclone (these things are heat engines, and the rising air in the eye is what causes the low pressure.