NEW DELHI: The monsoon has continued its stunning performance, delivering this year’s heaviest single-day rainfall, which has raised the total rainfall this season to 21% above normal.The uptick in the monsoon is expected to continue at least until the end of this month, which will be a big boon for farmers during the crucial planting period.Further, an approaching system of clouds in the Arabian Sea is intensifying and will drench the coastline of Maharashtra and Gujarat with heavy rain, the weather office has predicted.The US Navy’s meteorologists said there is a “moderate” chance that the cluster of clouds over the Arabian Sea would turn into a cyclone.However, Mrutunjay Mohapatra, chief of India Meteorological Department’s cyclone warning division, said the depression will form into a deep depression and not a cyclone. “We expect the depression to bring heavy rains in the west coast of north Maharashtra, Gujarat and parts of Rajasthan,” he said. On Monday, the depression lay centered about 320 km southwest of Porbandar.As a squally wind, with a speed of 45-55 kmph gusting to 65 kmph is to expected to commence along and off the west coast, fisherman out at sea were advised to return to the coast and not venture in the sea for the next 24 hours.Mohapatra said under the influence of this system, from June 25 very heavy rainfall was expected over Saurashtra and Kutch . Further from June 27-29, rains were to continue at most places along the west coast and south Gujarat with isolated heavy rainfall.The monsoon has already delivered 21% excess rainfall since the start of the season. Twenty-six out of the 36 subdivisions in the country have received excess to normal rainfall. So far, the rainfall deficit is at 7% in the north west region. In east Uttar Pradesh, the seasonal deficit was maximum at 74%, followed by 53% in west Uttar Pradesh, 49% in Uttarkhand and 20% in Punjab.The southwest monsoon continues to progress, with conditions favourable for further advance of southwest monsoon including Jammu and Kashmir in the next three days.In the next 24 hours, the weather office has forecast very heavy rainfall to occur at Chhattisgarh , Maharashtra, Jharkhand and Uttarakhand.Also, heavy rains were to occur at Himachal Pradesh , Jammu and Kashmir, Madhya Pradesh West Bengal , Karnataka, Goa, Kerala and Andaman & Nicobar islands.