A cyclonic circulation lies over the southeast Bay of Bengal and the adjoining south Andaman Sea extending up to middle tropospheric levels. Under its influence, a low pressure area is very likely to form over the southeast Bay of Bengal and neighbourhood during the next 24 hours.
The India meteorological department (IMD) on Wednesday evening issued a red alert for Mumbai and its neighbouring districts, predicting "extremely heavy rainfall".
The India Meteorological Department (IMD) seems to have taken a cautious stand over the World Meteorological Organisation's (WMO) projection of a 'poor monsoon' due to a probable 'El Nino' impact. The IMD did not agree with WMO's projections, saying, "El Nino and the progress of monsoon are not mutually exclusive events", and remained non-committal over its earlier projection of a "normal monsoon" for the June-September 2009 season.
He said scientists have noticed a trend of very deep cloud systems developing over the southeast Arabian Sea, and added that sometimes, these systems intrude into the land, like in 2019.
India received 41 per cent more rainfall than normal from October 1-21 with Uttarakhand alone recording more than five times its normal precipitation, IMD data showed on Thursday.
The IMD has issued a red-colour coded warning for the southern areas of Tamil Nadu Kerala in view of the brewing storm and said that these areas are expected to receive heavy to very heavy rainfall.
Incessant rain with intermittent heavy spells led to waterlogging on some roads and railway tracks, slowing down the public transport services.
The India meteorological department predicted mainly clear skies with heatwave conditions in many parts of Delhi and severe heat wave conditions in other areas.
Heavy rain continued to lash Chennai and other parts of Tamil Nadu on Wednesday, bringing residential neighborhoods and roads under knee-deep water and leading to traffic congestion besides affecting public transport services.
The news will augur well for the country as large parts have been witnessing agriculture distress and water levels in reservoirs in west and south India have dipped to low levels.
Cold-day conditions prevailed in parts of north India on Friday though the maximum temperatures rose slightly amid clear skies and sunshine during the day.
The heavy rains led to water level in various dams in the state rising to the red alert mark, prompting the government to open one of the shutters of Cheruthoni dam of Idukki reservoir in the afternoon.
The mercury in Delhi, which recorded its hottest day of the year so far at 45.6 degrees Celsius on Sunday, came down to 42.4 degrees Celsius, according to the India meteorological department.
A sudden downpour in Delhi caught citizens off guard and caused heavy waterlogging and traffic jams on Tuesday while Mumbai breathed a sigh of relief as showers stopped a day after heavy rain brought the metropolis to its knees.
The IMD director said, the cyclonic storm Tauktae in the Arabian sea is moving away from the Kerala coast and is now approaching the Karnataka coast.
The maximum temperature on Saturday settled at 18.1 degrees Celsius, two notches below the season's average, and the minimum was recorded at 3.6 degrees Celsius, four notches below the season's average, the IMD said.
To ensure immediate cooling of the body, the hospital has set up a first-of-its-kind heatstroke unit.
Villpuram district in north Tamil Nadu continued to reel under unprecedented flooding on Monday following extremely heavy rainfall, virtually blocking access to villages and residential colonies as bridges and roads overflowed, inundating huge acreage of standing crops and leaving passengers stranded as rail and road traffic was hit.
More than 39.8 lakh people in 27 of the 33 districts in the state were affected by the deluge on Thursday.
Ten to 20 days of heatwave are expected against the normal of four to eight days in the entire April-June period.
The administration is geared up for more showers as the India meteorological department has warned of heavy to very heavy rains with isolated extremely heavy rains in several districts of the state till Thursday morning.
Satellite imagery showed a layer of dense fog extending from Punjab and north Rajasthan to the northeast. Patches of fog were also visible along the east coast.
The weather office has issued a forecast of heavy to very heavy rains at isolated places in several districts of Gujarat over the next one week.
While the IMD had forecast a 'normal' monsoon for the entire season, Skymet stated that rain this year would be 'below normal', report Sanjeeb Mukherjee and Sahil Makkar.
After making landfall near Puducherry on November 30, Cyclone Fengal weakened on Sunday, but torrential downpour under its influence paralysed the union territory, with the Army stepping in to evacuate stranded persons in inundated streets.
Amid the heavy downpour in Bengaluru, residents of many flood-affected areas have taken to social media to pour out their woes ranging from waterlogging to complaining about "crumbling" infrastructure.
Heavy falls at isolated places are very likely over Kerala on April 29 and 30. The system will not make landfall in Tamil Nadu, but may bring light rain in some northern parts, it said.
A total of 435 people died in the country due to extreme weather events during the last three months of the southwest monsoon, according to the data compiled by the India meteorological department.
The IMD issued a 'red alert' for Pune district and asked people to take precautions.
Heavy rains had battered the metropolis on Sunday and Monday as well.
As weather patterns grow more unpredictable due to climate crisis, India is taking a giant leap with "Mission Mausam" to improve weather understanding and forecasting through expanded observation networks, better modeling and advanced tools like AI and machine learning.
Meanwhile, trains ran on time on the Main and Western lines of the Central Railway (CR) and Western Railway (WR) on Saturday.
Southwest monsoon has furthered advanced into some parts of south Arabian Sea
Gross Value Added (GVA) growth in agriculture and allied activities in the first quarter of the 2024-25 financial year (Q1FY25) dipped to 2.7 per cent at constant prices from 4.2 per cent in Q1FY24 due to a drop in output of some crops following heatwave in the main growing months. Low post-monsoon rains, which dried most of the reservoirs in several states across the country, also impacted the production of many crops. At current prices, the growth was estimated at 8.5 per cent as against 4.1 per cent in Q1FY24 due to a spike in food inflation during the April to June months of FY25.
Delhi's air quality deteriorated significantly on Monday, with areas like Dwarka, Mundka and Najafgarh recording an AQI of 500, the worst this season. The city's overall AQI reached 491, triggering the implementation of the Graded Response Action Plan (GRAP) Stage-IV restrictions in Delhi-NCR. Doctors warned of health risks, urging people to wear N95 masks and avoid outdoor activities. The Supreme Court questioned the Delhi government on its anti-pollution measures and warned against scaling down preventive measures without its permission. Delhi Chief Minister Atishi accused the BJP-led central government of political maneuvering while neglecting stubble burning in states it governs. Meanwhile, the city enforced stricter pollution control measures, including a ban on truck entry and suspension of construction activities. Air purifier sales surged, reflecting the public's concern over the severe air pollution.
This should augur well for the rabi crops as delayed withdrawal will leave enough moisture in the soil for early sowing.
The Met office has issued a "red" warning for Delhi, Haryana, Punjab and west Rajasthan, stressing the need for "extreme care for vulnerable people".
Given IMD's past record on forecasts, the latest one could also go wrong.
Delayed by 10 days due to cyclone Biparjoy, southwest monsoon is likely to progress further and hit Mumbai between June 23 and 25, the India meteorological department said on Wednesday.
