If stormy weather is approaching the pressure tendency probably be?

Answer 1

Barometric pressure decrease indicates coming stormy weather, rain, wind, , heat. Barometric pressure rise indicates fair, dry, colder weather. Slow, regular and moderate fall in pressure indicates low pressure area is passing at a distance. Any marked change in weather unlikely. Sudden decrease, even if small, indicates a nearby disturbance; normally bringing wind, and short showers. Large pressure drop signals a coming storm in 5 to 6 hours. Large, slow and sustained decrease indicates a long period of poor weather. Coming weather will be more pronounced if pressure started rising before dropping. Sudden rise of pressure,when the pressure is about average or above average and the weather is fair, indicates approach of a low pressure cell, and the barometer will soon start to come down. Rapid rise when the pressure is low, announces a short period of fair weather. If pressure rise is large and prolonged, count on a many days of good weather ahead.