Description of weather change Chicago Lansing, MI At what time did a dramatic change in weather start to take place? (Give am/pm times.) Before this time, was the pressure remaining steady, increasing, or decreasing? After this time, was the pressure remaining steady, increasing, or decreasing? Before this time, what was the wind direction? After this time, what was the wind direction? After this time, did the temperature rise or fall? After this time, did the dew point rise or fall? How much did the temperature change one hour later? What were the precipitation conditions reported at this time