Weather Report: North to foresee temperature drop, poor air quality; South expects a wet week

Twin cyclonic storms in the Indian Ocean remained away from the coast of India; the one in the Arabian Sea made a landfall over Oman, while Cyclone Hamoon in the Bay of Bengal re-curved due to an approaching westerly trough and made a landfall in Bangladesh. Earlier in the week, cyclone Hamoon intensified into a very severe cyclone (gusty winds going up to 65 knots). As per the Indian Meteorological Department, in the month of October, it was the first time since 2018 that a very severe cyclone formed in the Bay of Bengal. [caption id=“attachment_13317112” align=“alignnone” width=“730”] Official observed track of twin cyclones in India ocean during October, 2023[/caption] Icy cold nights have started over western Himalayas after the passage of the western disturbance. On October 26, Nyoma IMD AWS in Ladakh recorded a minimum temperature of -9.3°C, and Hanle IAO reported a minimum temperature of -8.7°C. Minimum temperatures from various stations of Ladakh, Kashmir and Jammu; Padum: -4.0°C Leh: -3.6°C Pahalgam: -0.5°C Shopian: -0.4°C Kargil: 0.2°C Gulmarg: 0.5°C Sonamarg: 0.5°C Kupwara: 2.0°C Srinagar: 3.2°C Qazi Gund: 3.4°C Bhaderwah: 5.8°C Banihal: 6.8°C Batote: 9.6°C Jammu: 14.5°C Nights are now turning cooler in the plains of north and central India. New Delhi Safdarjung reported a minimum temperature of 14.3 °C on October 28, the lowest so far in this season. Pune Shivajinagar weather observatory saw a minimum temperature of 14°C (2°C below normal), and both cities experienced the first sub-15°C temperature of the season on the weekend. [caption id=“attachment_13317132” align=“alignnone” width=“671”] Temperature anomaly during October 2023 so far, mean temperature pan India has been slightly above normal[/caption] The north-east monsoon onset was declared in most parts of Tamil Nadu and Kerala in the last week; however, it has been a very weak show so far. The easterlies remained unstructured for most days and started to gain some strength only on the weekend. After a record south-west monsoon season, Chennai Airport is on the verge of recording one of the driest Octobers, with just 39 mm of rainfall against the average of 375 mm. [caption id=“attachment_13317152” align=“alignnone” width=“630”] Rainfall manhattan has been low rise since the withdrawal of south west monsoon in mid October[/caption] The actual rainfall in Pan India so far in the period from October 1st to October 29th stands at 49.6 mm against the normal of 72.7 mm; the departure from normal currently stands at -32%. Subdivision wise seasonal rains till 29th October • Southern peninsula: Actual 55.4mm against the average of 143.6mm, -61% departure from normal. • East and north-east India: Actual 134.4mm against the average of 120.8mm, +11% departure from normal. • North-west India: Actual 31.1mm against the average of 21.3mm, +46% departure from normal. • Central India: Actual 22.8mm against the average of 55.6mm, -59% departure from normal. [caption id=“attachment_13317162” align=“alignnone” width=“557”] Nationwide subdivision rainfall in the month of October so far[/caption] Current synoptic weather features influencing weather in India as on 29th October 2023 • The western disturbance as a trough with its axis at 5.8 km above mean sea level roughly along Long. 74°E to the north of 25°N persists. • The cyclonic circulation over Haryana and neighbourhood extending up to 1.5 km above mean sea level persists. • The cyclonic circulation over Bangladesh at 3.1 km above mean sea level persists. • The feeble western disturbance is likely to affect western Himalayan region from the night of 1st November 2023. • Prevailing strong northeasterly/easterly winds from Bay of Bengal to over South Peninsular India. All India weather forecast till 5th November 2023 Northeast monsoon to activate and drench southern states Southern states of Tamil Nadu and Kerala are all set to experience first spell of active north east monsoon conditions in the upcoming week starting from 30th October, Under the influence of strong easterly winds from Bay of Bengal conditions are becoming favourable for a wet week with moderate to heavy rains in some of the key cities; Chennai, Coimbatore, Trivandrum, Kochi. Bangalore to experience overcast conditions with light rains, some more parts of south Karnataka and south Andhra Pradesh to witness monsoon showers till 5th November. Normal to above normal rains in the week will try to cover up some deficiency number from the existing -61% rainfall anomaly. North, central and east India to foresee further temperature drop and poor air quality It is the time of year when temperature drops are not very steep but are noticeable as minimum temperatures start to dip below 15°C in nearly 60% of the geographical area of the nation. Nights and mornings have a fair nip in the air. Along with cool weather comes the season of air pollution, which has become prevalent in the last few days. Reduced wind speed due to weak western disturbances over the Himalayas favours particulate matter to persist in the air rather than dispersing; the temperature inversion further accelerates it in the nights; hence, along with cool weather, poor air quality is in store for many cities in Punjab, Haryana, Delhi NCR, Uttar Pradesh, Bihar, Jharkhand, and West Bengal in the upcoming week, mainly Indo-Gangetic plains, to experience an air quality index in the category of poor to very poor across days with less chances of improvement. Weather conditions across Gujarat, Maharashtra, Madhya Pradesh, Telangana, Chhattisgarh, Odisha, Jharkhand, Bihar, Sikkim, Arunachal Pradesh, Assam, Meghalaya, Mizoram, Manipur, Nagaland, and Tripura will stay completely dry across the week, with cool nights along with pleasant days. Warm days will not start subsiding as we head into November. The writer, better known as the Rohtak Weatherman, interprets and explains complex weather patterns. His impact-based forecasts @navdeepdahiya55 are very popular in north India. Views expressed in the above piece are personal and solely that of the author. They do not necessarily reflect Firstpost_’s views._   Read all the  Latest News ,  Trending News ,  Cricket News ,  Bollywood News , India News  and  Entertainment News  here. Follow us on  Facebook ,  Twitter  and  Instagram .