Mumbai has received 253.3 mm rainfall in the 24 hours ending 8 am on Friday.
The orange alert implies that authorities should be ready to handle situations arising out of severe weather.
The deep depression in the Bay of Bengal is likely to intensify further into a cyclonic storm by late Tuesday night, the IMD said.
Authorities have sounded red alert in three districts of Kerala on May 14 and five districts on May 15, indicating the possibility of extremely heavy rains under the influence of a low pressure area over the Arabian Sea.
The India Meteorological Department on Friday predicted that Delhi will likely receive light to moderate rain accompanied by thunderstorms for the next 4-5 days.
The IMD has issued an orange alert for Mumbai, warning of very heavy rains at isolated places with strong winds on Monday as the very severe cyclonic storm Tauktae is likely to pass close to the Mumbai coast towards Gujarat.
The weather department attributed the unusual heat to the lack of rainfall due to the absence of active western disturbances over north India and any major system over south India.
IMD director general Mrutunjay Mohapatra said that cyclone Asani has already achieved maximum stage of intensification and is gradually getting weakened.
Low pressure over south-central Maharashtra and south Konkan is likely to move over the Arabian Sea and intensify into a depression in the next 48 hours, the India meteorological department said on Thursday. Under the influence of this cyclonic circulation, heavy rains are expected over the ghat areas of Maharashtra, Konkan and south Gujarat during the next two days, the IMD said.
A red alert was declared in 8 districts of Kerala on Thursday by the India Meteorological Department (IMD) as rains continued to lash various parts of the state and disrupted the day-to-day lives of the people as roads got flooded or caved in and many got displaced from their homes to relief camps.
The weather system over the South Andaman Sea and the adjoining southeast Bay of Bengal is very likely to move north-westwards and strengthen into a depression by Saturday, the Met Department said.
Bharadwaj said it has not rained in Delhi in the last 3-4 days, yet still the water level in Yamuna reached 208.66 metres.
Mumbai civic body took to Twitter to inform citizens about the do's and don'ts and asked them to "stay hydrated and safe".
'It is the most prone month for the development of cyclones in the pre-monsoon period.'
Relief Commissioner Alok Pandey told reporters that the government is constantly working to ensure that there is no loss of life due to the weather phenomenon.
A record 119.3 mm rainfall pounded Delhi under the impact of cyclonic storm Tauktae and a western disturbance in 24 hours ending 8:30 am on Thursday, breaking all the previous records for May, the IMD said on Thursday.
It rained in the periphery of Delhi -- Aligarh in Uttar Pradesh and Karnal in Haryana -- but clouds hovered over the national capital, without giving any relief from the heat.
The finance ministry on Thursday raised concerns over the possible impact of El Nio conditions on India this year, saying if recent forecasts came true, the country could see lower agricultural output and higher inflation. "Some meteorological agencies predict the return of El Nio conditions in India this year. "If these predictions are accurate, then monsoon rains could be deficient, leading to lower agricultural output and higher prices," the ministry said in its monthly economic review.
Incessant showers caused landslides and floods in various parts of the country leaving at least 17 people dead on Wednesday while thousands more were forced to move to safety as rivers swelled and water reservoirs filled up fast.
In a statement, it said 198 properties in the state were partially damaged and 30 houses completely destroyed in the rains from July 31 to till date.
Incessant showers lashed Mumbai and its neighbouring areas on Wednesday morning, leading to flooding in many low-lying areas and traffic snarls on roads.
The south-west monsoon on Tuesday started withdrawing from parts of south-west Rajasthan and adjoining Kutch in Gujarat, with at least eight states, including rice bowl states of Uttar Pradesh and Bihar reporting deficient rains. It was for the first time since 2016 that the monsoon started withdrawing in the third week of September. "Southwest monsoon has withdrawn from parts of southwest Rajasthan & adjoining Kutch today, against its normal date of withdrawal from southwest Rajasthan of September 17," the India Meteorological Department (IMD) tweeted.
IMD said on Tuesday that the cyclone has a wind speed of 100-110 kmph and gusting to 120 kmph. The coastal areas of Tamil Nadu are expected to receive heavy rain between November 23-26.
The monsoon onset over Kerala marks the commencement of the four-month rainfall season in the country.
The Amarnath pilgrimage resumed on Monday after remaining suspended for three days following flash floods that claimed 15 lives, while the Jammu and Kashmir administration said it would get a clear picture by Tuesday about the damage.
As per IMD classification, "heavy to very heavy rainfall" means precipitation ranging from 64.5 mm to 204.4 mm in a period of 24 hours.
Some of the stretches and areas where waterlogging was seen included Dhaula Kuan, Mathura Road, Moti Bagh, Vikas Marg, Ring Road, Rohtak Road, Sangam Vihar, Kirari and near Pragati Maidan among others.
The powerful cyclone, strongest to hit India in 20 years, made landfall at around 8 am in India's eastern state of Odisha, killing at least 12 people.
The landfall process of the eye of the extremely severe cyclonic storm Tauktae, which hit the Gujarat coast in Saurashtra region between Diu and Una, ended around midnight, the India Meteorological Department (IMD) said.
Between 8.30 am and 11 am, the IMD's Colaba observatory (representative of south Mumbai) recorded 79.4 mm rainfall, while the Santacruz observatory (representative of suburbs) recorded 44.5 mm rain, she said.
In Uttar Pradesh, the death toll due to lightning strikes rose to 42.
Traffic snarls were reported from different parts of the national capital on Saturday as rain continued to lash New Delhi for the third consecutive day.