Based on humidity - above maps shows your bad hair day....where orange is the worst.....green not bad. Below - satellite and radar ....showing showers and storms in Great Lakes working slowly east.
Maps below show severe thunderstorm threat today...dark green to brown and even red.....followed by animated maps for next 2 days.
Below - current upper air jet stream. Digging in the west ...where snow fell in higher elevations of Arizona yesterday. Heatwave for East. Be safe.