The National Center of Meteorology and Seismology (NCMS) has advised drivers to take precautionary measures while driving on roads in case of poor visibility due to the dust-in-suspension. It is also advised the people to stay away from the sea during the unstable weather.In a statement today, the NCMS said it expected weather conditions for Wednesday to be dusty and partly cloudy in general.''The amount of clouds increases over some regions, especially the northern, eastern and the islands, with probability of convective clouds accumulation over the eastern mountainous region by afternoon. The temperatures tend to increase over the western region in specific,'' it said.''Moderate southerly wind, to fresh at times, will prevail over the most areas, raising the dust and sand and decreasing the horizontal visibility over the inland regions in specific. Sea will be moderate to rough in Arabian Gulf and Sea of Oman.The country will be affected by surface trough (Red Sea Trough) on coming Thursday associated with cold air mass in the upper air leading unstable weather, with partly cloudy to cloudy at times with increasing of the clouds amount over scattered regions especially over the western, northeastern and over a few islands, embedded with rainfall throughout the evening and night.The air temperature will tend to decrease gradually over the western region in specific. The winds will be moderate to fresh and strong at times, raising the dust and sand with poor visibility. Sea will be rough in Arabian Gulf and Sea of Oman.This unstable weather conditions will continue to affect the country with fluctuation and keep the weather to be cloudy to partly cloudy from one time to another and the chance of rain will remain over the country on different time intervals. That will continue till Sunday night 16th March 2014.