LUCKNOW, Oct. 31 -- The state is expected to experience unseasonal, low intensity rainfall over the next 24 hours under the influence of a low-pressure area over northern Chhattisgarh and the adjoining eastern Madhya Pradesh. For the first half of Saturday, IMD issued a yellow alert indicating a high probability of heavy rainfall in 21 districts, including Azamgarh, Ballia, Gorakhpur, Sant Kabir Nagar, among others, and surrounding regions. There is a high probability of gusty winds in 25 districts including Lucknow, Barabanki, Rae Bareli, Sultanpur, Ambedkar Nagar, Aligarh, Mathura, among others, while thunderstorms, lightning may be expected in Lucknow, Barabanki, Rae Bareli, Amethi, Sultanpur, Gonda, Ayodhya, Bahraich, Lakhimpur Kheri, Sitapur, Ambedkar Nagar, Prayagraj, among others. Meanwhile, the remnants of Arnab had weakened into a well-marked low-pressure area by Friday morning, the weatherman said. West UP (9.9 mm) experienced more rain than East UP (5.4 mm) under its influence in the last 24 hours till 8:30 am on Friday. Overall, UP recorded 7.3 mm rain in this period, IMD data read. An observatory in Bijnor witnessed 99 mm rainfall, Khekda in Baghpat recorded 88 mm, Jansath in Muzaffarnagar recorded 72.1 mm; Meerut recorded 56.2 mm; and Deoband at Saharanpur recorded 49 mm. Lucknow experienced light rainfall throughout the day on Friday....