YEREVAN. - Clear weather is expected on Aug. 25-28 in Yerevan, the Ministry of Emergency Situations informed Armenian News-NEWS.AM.   Forecasters predict short rains and thunderstorm in northern parts of the country in the evening hours and first half of night of Aug. 29. In the eastern part the wind will be 3-8 m/s. The air temperature on Aug. 25-27 will gradually raise but will fall by 2-3 degrees on Aug. 29. Rain spreading across Ararat Valley and pre-mountain zone will bring winds of 15-20 m/s. On Aug 25-29 clear weather is forecasted in Yerevan with wind acceleration to 15-19 m/s in evening hours.