Light Showers For Delhi Till the Weekend: Rain Activity to Pick Up Next Week
Key Takeaways:
- Delhi has received only about 25 mm of rainfall over the past ten days, keeping the monthly total below normal.
- Light, short-duration showers are expected to continue across the city through the weekend.
- The current position of the monsoon trough is not favourable for widespread or intense rainfall over Delhi.
- Rainfall activity is likely to increase between July 26 and 28 as the monsoon trough shifts northward.
- Forecast Validity: Next 3 to 5 days.
Monsoon activity has remained on the milder side over Delhi during the last ten days. The capital city has received about 25 mm of rainfall between July 11 and July 24. The base station, Safdarjung, recorded only 0.5 mm of rainfall during the past 24 hours. The total rainfall for this month now stands at 156.3 mm, well below its monthly normal of 195.8 mm. Light and patchy showers are expected today, and this weather pattern is likely to continue through the weekend.
A western disturbance is persisting over the mountains as an upper-air system. Also, under the influence of an east-west shear zone, a low-pressure area has formed over Southeast Rajasthan and adjoining Madhya Pradesh. This feature has dragged the seasonal monsoon trough southward. At present, the trough passes through Deesa, the centre of the low-pressure area, Satna, and extends further eastward. This trough is the primary trigger for monsoon showers over Delhi, but it is currently not favourably positioned to produce intense and sustained rainfall activity.
Under the combined influence of the western disturbance and the monsoon trough, medium-level sheet clouds and scattered low-level cloud patches are likely to persist over Delhi and its neighbourhood. Fleeting showers and patchy rainfall of short duration may occur at any time of the day. These rain-bearing cloud patches are expected to drift from east to west. Highly humid easterly winds will prevent any sharp rise in temperatures. The maximum temperature today is likely to remain around 34°C (±1°C), with only a marginal increase expected over the weekend.
The monsoon trough is likely to shift northward gradually. It is expected to cross the latitude of Delhi on Sunday and remain north of the city for the subsequent four to five days. During this northward shift, Delhi may receive a few sharp spells of rain between July 26 and July 28, when the trough moves closer to the foothills of West Uttar Pradesh and Uttarakhand.
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