With Spring come increased chances for moderate to severe thunderstorms, with their wonderful light show that can blast the innards out of your lifeline, a.k.a. your transmitter.
This would be a good time to have a qualified engineer check your ground system to see if ice storms or age have degraded its performance. This should be part of an overall annual visual tower inspection.
Depending on your underwriter, the better the ground system, the better your insurance rate. Do your best, and your equipment will live long so that you can prosper.