A storm is predicted if atmospheric pressure?

Question

rises suddenly,rises gradually,falls suddenly or falls gradually

Answer 1

Every place experiences what is called diurnal variation of pressure in which the pressure rises twice and falls twice every day.The amplitude of this variation is greatest at the equator and diminishes towards the poles becoming insignificant beyond 60 degree latitudes.The maxima occurs at 1000 hrs and 2200m hrs and the minima occurs 0400 hrs and 1600 hrs ( local time) approximately.

So whether it is grqadual falling or sudden falling,it should continue for more than 24 hours to predict the approach of a storm.

Answer 2

Falls suddenly

Answer 3

If the pressure falls suddenly or gradually, those can both be indications for a storm.  If the sky is clear and the pressure drops, that doesn't mean there will be a storm, thats usually caused by the increased incoming solar radiation causing the surface to warm and in turn air to rise, which results in lower pressure on the surface.  But sometimes this rising warm air can be an assistant to thunderstorm development.  If there are clouds covering all or a vast majority of the sky and pressure is falling slowly that would be an indication that a storm is on its way, when pressure falls rapidly that would be more indicative of a storm being imminent.

Answer 4

Sudden fall in barometric pressure is the most likely indicator of stormy weather.  

*