Catawba rhododendron bushes can reach a height of 6'-8' with a spread of 4'-6'. Displays are most effective when rhododendron bushes are massed together. These are poisonous plants -- do not allow children to ingest any of the azaleas or rhododendrons.
Best Answer: Tornadoes are caused by winds. When a tornado forms the wind pressure around the tornado drops and that's what you see on the barometer, the pressure goes down.
What is high air pressure? A: High air pressure is when the atmosphere's pressure is above average. This is due to a simple wind pattern, which is distorted to such a degree that the air is twisted to the right or left. Great wind spirals are produced, which we know as high and low pressure systems. Continue Reading.