Jaipur, Nov. 15 -- A fresh western disturbance has brought a change in weather conditions across Rajasthan, with the India Meteorological Department issuing warnings for thunderstorms, lightning and gusty winds in several districts on Sunday. The weather system is expected to weaken from November 16, paving the way for a drop in temperatures and an increase in winter chill across the state. According to the Meteorological Centre, Jaipur, the western disturbance is likely to cause partly cloudy skies and isolated light rainfall in parts of the Jodhpur and Bikaner divisions. Winds reaching speeds of 30-40 kmph may accompany thunderstorms in some areas. Radheshyam Sharma, director of the Meteorological Centre, Jaipur, said the disturbance would primarily affect western and northern Rajasthan, with cloudy conditions and scattered rainfall expected during November 15. The weather department has issued a yellow alert for thunderstorms and lightning in Bikaner, Jaisalmer, Jodhpur, Nagaur and Phalodi. Sri Ganganagar, Hanumangarh and Churu are also among districts where adverse weather conditions are expected. According to the IMD's latest warning issued on November 14, thunderstorms and lightning are likely in parts of Rajasthan on Sunday as well. The disturbance may bring light rainfall or drizzle to the Shekhawati region and northern parts of the Bikaner, Ajmer and Jaipur divisions. Meanwhile, temperatures have begun declining in several parts of the state, particularly in the hill station of Mount Abu, where the minimum temperature has hovered around 10-11degC. The MeT expects predominantly dry conditions from November 16, with temperatures likely to decline by 2-4degC in some parts following the passage of the western disturbance. The fall could intensify winter conditions, particularly during the night and early morning hours....