 In that April, May, June timeframe, we are seeing the ingredients come together more often to support severe weather, at least in the spring, kind of ebbing off in summertime. GLSEN, though, points to long-term forecasts that indicate Iowa is likely to see warm and wet conditions, so more thunderstorms this week. While there have been 116 tornadoes so far this year, only seven of them happened in June, which is typically the month when the most tornadoes strike in Iowa.