Civil Defense authority today called on citizens and expatriates in the Kingdom of Saudi Arabia to remain cautious and keep away from risky places following forecasts of continuing weather changes over different parts of the Kingdom, effective from tomorrow through Friday next. In a statement, the Meteorology and Environment Protection Authority said thunder storms are widely expected over all parts of the country together with speedy low-altitude winds stirring dust over some of those parts. In particular, the Jazan border heights are expected to witness heavy rains that could cause floods, the statement said.