Over 1-month long fog from Lahore to Dhaka is now longest spell in records. IMD reveals reasons and forecast
Satellite monitoring of fog revealed that the previous longest period occurred during the winter of 2019-20, lasting for approximately three weeks from December 14 to January 2, according to meteorological officials. The current spell has already lasted for around 32 days and is expected to persist for another three to four days, as forecasted.
R K Jenamani, a senior scientist at the IMD specializing in fog, todl TOI that this winter, fog and low cloud cover started on December 24 in the western regions, including Punjab and Haryana.
It then spread to Delhi, northern Rajasthan, and western Uttar Pradesh on December 25, gradually moving to eastern Uttar Pradesh by December 31, and eventually reaching Bihar. Subsequently, it extended further to parts of Bengal, Bangladesh, and the northeast.
Jenamani emphasized that this fog event has been continuous since December 24, covering a significant portion of northern India every day.
Throughout this period, the fog layer has varied in terms of its coverage area.
The fog has exhibited vertical movements, alternately rising and falling, transforming into 'uplifted fog' or low-cloud cover during the day and descending to ground level during the night or early morning hours.
R K Jenamani mentioned, «Amritsar and locations in south Punjab faced significant impact, enduring persistent dense fog at ground level for up to three consecutive days on three separate occasions. Cities like Delhi, Lucknow, and Varanasi also experienced fog on nearly every day throughout this period.
