Lucknow, Oct. 15 -- Another spell of rain accompanied by gusty winds is likely to begin in western Uttar Pradesh within 24 hours, the India Meteorological Department (IMD) said on Wednesday. Under the influence of a Western Disturbance over northern Pakistan, the system is expected to affect the Terai region and adjoining central districts of eastern UP by October 16, bringing scattered rainfall. The weather is likely to turn dry again after October 17, said Atul Kumar Singh, senior scientist at the Regional Meteorological Centre, Lucknow. The IMD issued a yellow warning (be watcthful) for Thursday, forecasting a high probability of hailstorms in Saharanpur, Muzaffarnagar, Baghpat, Meerut, Bijnor, Shamli and adjoining areas. Thunderstorms, lightning and gusty winds of 40-50 kmph are also likely in 15 districts, including Ghaziabad, Gautam Buddha Nagar, Bulandshahr, Aligarh, Mathura, Agra and Amroha. For Friday, a yellow alert has been issued for 21 districts, warning of thunderstorms, lightning and gusty winds of 30-40 kmph, with gusts reaching 50 kmph. The districts include Saharanpur, Meerut, Ghaziabad, Mathura, Bijnor, Moradabad, Bareilly and Badaun, among others....