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IMD Forecasts Short Thunderstorms for Delhi as Monsoon Remains Delayed

Western disturbances are expected to bring brief cooling through isolated storms without signalling the southwest monsoon’s arrival, leaving the city with a rainfall shortfall and poor air quality.

Overview

  • The India Meteorological Department has warned of isolated thunderstorms, lightning and gusty winds over Delhi-NCR for the next few days, with sustained surface winds of 20–30 km/h and gusts up to about 40 km/h.
  • Forecasters say the showers are driven by western disturbances and extra moisture, not by the southwest monsoon, so the episodes will give only short-term relief from heat.
  • The IMD now expects the monsoon’s arrival in Delhi to be later than the normal June 27 date and possibly slip into late June or early July.
  • India’s rainfall this month shows a large deficit and Delhi’s local totals are far below normal, with national data indicating roughly a 41% shortfall for early June and the city recording much lower-than-average June rain.
  • Air quality in Delhi has worsened into the ‘poor’ range, with 24-hour AQI readings in the 200s after a recent dust storm, and elevated particulates are likely to persist until sustained rains arrive.