The first day of spring differs for astronomers and meteorologists - March 20 for astronomers and March 1 for meteorologists.Astronomical spring is tied to Earth's tilt and the equinox, causing the start date to vary yearly.Meteorological spring consistently runs from March 1 to May 31 for data analysis purposes.Spring weather is a transition period, leading into warmer months and can bring severe weather outbreaks.Severe storms, including tornadoes, are more common in spring and summer.Safety measures for thunderstorms and tornadoes include seeking shelter and avoiding mobile homes during tornado warnings.The spring outlook for 2025 forecasts above-normal temperatures for most of the country and increased precipitation in certain regions.While astronomical spring starts on March 20, meteorologists opt for March 1 for consistent records and analysis.