Thursday, June 1, 2023

Unseasonal rains and strong winds damage wheat crops in northern India.


Unseasonal rains: India’s Meteorological Department has asked farmers to postpone harvests in Punjab, Haryana, Rajasthan, and Arunachal Pradesh.

Further thunderstorms and hail are expected in northwest and central India throughout the weekend as India’s meteorological department may affect the harvest of wheat and other crops. (IMD) Warning.

The wheat harvest was affected by rain and strong winds near Amritsar. (PTI)
Wheat crops were affected by heavy rains and winds near Amritsar. (PTI)
A western disturbance that is about to hit the Himalayan region is currently over Iran. It is expected to move east to northern India.
A cyclonic circulation is also over Rajasthan. A low-pressure trough extends from Rayalaseema to Jharkhand.

Under the influence of these features, cool rain, and thunderstorms are possible in northwest India throughout the weekend. Hailstorms are expected to occur in Jammu, Himachal Pradesh, Uttarakhand, Punjab, Haryana, northwest Pradesh, Rajasthan, and Uttarakhand on Saturday, IMD said. Hailstorms are also possible in central India over the weekend, especially in Chhattisgarh, Madhya Pradesh, and Vidarbha.
Jammu, Himachal Pradesh, Uttarakhand, Punjab, Haryana, Western Uttar Pradesh, Northern Rajasthan and Uttarakhand, Madhya Pradesh, Vidarbha, IMD said on Friday. gusts and hail.

Strong winds/hail damage plantations, horticulture and unharvested crops.

IMD has asked farmers to postpone crop harvesting in Punjab, Haryana, Rajasthan and Arunachal Pradesh. “..
.. put already harvested produce in a safe place or cover heaps of already harvested produce in the fields with tarpaulins…”

IMD recommends postponement of jute planting in West Bengal, Sikkim and Arunachal Pradesh Delay corn planting.
“…drain excess water from fields; provide mechanical support to horticultural crops and protect orchards with hail nets.”

Mahesh Palawat, Vice President (Climate Change and Meteorology), Skymet Weather, Central Pakistan and Rajasthan An induced cyclonic circulation has occurred in the western part of the state.
“Wind discontinuity in the peninsular region will bring hail and thunderstorms to eastern Madhya Pradesh, Chhattisgarh, coastal areas of Andhra Pradesh and Telangana. On Friday and Saturday, we expect thunderstorms and hail in the north, especially in western and northern Rajasthan.” The first period of thunderstorms and hail began on March 16. Meteorologists say high temperatures in February and March, which warm the surface, are linked to the onset of pre-monsoon activity. This is not very unusual, although pre-monsoon activity started relatively early.
IMD Director General M Mohapatra said convective clouds form when they heat up. “The temperatures in February were 5-6 degrees above normal. The ground was very dry and hot, and that created a trigger,” he said. He said two highs formed in the Bay of Bengal and the Arabian Sea brought lots of moisture. “.
..other low-level cyclonic circulations and western disturbances affected the western Himalayas. Northwest winds blowing towards the Indian peninsula at 120 kilometers per hour were a major factor responsible for the widespread hailstorm, Mohapatra said.

Bad weather and rains damaged wheat in nearly every major producing state this month. But the extent of the damage could be known in the coming weeks, based on preliminary assessments by a panel of experts set up in anticipation of the early summer heat wave.

On Monday, the IMD said a cyclonic circulation had established over northeast Rajasthan, from which an east-west trough was moving towards Nagaland in the lower troposphere. Another cyclonic circulation is located in the lower troposphere southwest of Rajasthan. The trough/wind discontinuity extends from interior Tamil Nadu to central Chhattisgarh in the lower troposphere.
M Rajeevan, formerly of the Department of Geosciences, described them as very typical pre-monsoon events. “…it started a little early this year, but it’s not unusual.
There have also been many years in the past where hail destroyed crops in many states. For such activities, thick clouds must form… and for this, the humidity of the Bay of Bengal and the Arabian Sea is needed.
Interactions with low latitude tropical gyres can also be observed. These activities can be caused by a hotter surface. “

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