The threat of damaging winds and tornadoes will decrease overnight, but repeated rounds of heavy rain will still cause flood concerns, according to wpxi.com. Rain will taper to scattered showers throughout the day as colder air rushes in, with highs nearly 30 degrees colder than Thursday, struggling to get out of the 40s, wpxi.com reported. Friday will bring scattered rain showers and a few thunderstorms into western Pennsylvania, according to wtae, with the highest risk for strong storms east of Pittsburgh. Spring is one of the most volatile seasons across the United States because it is a true transitional period, during which lingering cold air from winter frequently clashes with strengthening warmth and moisture surging northward from the Gulf, according to usatoday.com. The jet stream often contributes to spring weather volatility, and springtime weather dangers include tornadoes, thunderstorms, floods, wind, hail, wildfires, and crazy temperature changes, usatoday.com reported. Hurricanes bring a combination of destructive forces that can devastate homes, communities, and infrastructure, according to guidewire.com. The primary hazards of hurricanes are extreme winds, inland flooding, and coastal storm surge, guidewire.com reported. High winds from hurricanes can reach speeds exceeding 150 mph, guidewire.com reported. High winds from hurricanes can tear roofs from homes, uproot trees, and turn unsecured objects into dangerous projectiles, guidewire.com reported. Wind damage often creates openings that allow rainwater to enter, compounding the damage and losses, guidewire.com reported.