Mumbai/Pune/Hill Station Weather forecast from 20th to 24th December:
Mumbai, Pune and all of konkan and western Maharashtra will see a gradual drop in temperature in the coming 3-4 days, and more specifically after 21st December.
Mumbai minimum may be around 18°C and possibly drop till 17°C by Thursday. Maximum temperature in Mumbai and konkan coast likely to drop from Wednesday (will be ~30°C instead of 32-33°C seen at present) as daytime easterly winds weaken and sea breeze sets in early.
Interiors in Thane district may see min dropping till 13-14°C and further drop till 12°C by Thursday.
Pune min may approach 10°C and outskirts may dip in single digits.
Nashik district may see single digit min temperature of 7-9°C.
Mahabaleshwar will see min temperature of around 8-10°C while Lonavala may be cool at around 13°C.
Credit Australian Government Bureau of Metereology-
Issued 21 December 2021
The latest Climate Driver Update and Climate Model Summary are now available on the Bureau's website.
La Niña continues as Indian Ocean Dipole returns to neutral
La Niña conditions continue in the tropical Pacific. Climate models suggest this La Niña will persist until the late southern hemisphere summer or early autumn 2022. La Niña events increase the chance of above average rainfall across much of northern and eastern Australia during summer.
Most indicators of the El Niño–Southern Oscillation (ENSO) show clear La Niña patterns. Sea surface temperatures (SSTs) in the tropical Pacific remain at, or exceed, La Niña thresholds, with cooler water beneath the surface to support further cooling. In the atmosphere, cloud, wind, and pressure patterns are typical of La Niña, indicating the atmosphere is responding to the ocean changes below. These atmospheric changes also reinforce the changes observed in the ocean. This feedback process is known as 'coupling' and allows La Niña conditions to be sustained for an extended period.
The Indian Ocean Dipole (IOD) is neutral. Cloud and wind patterns, as well as SSTs, have now eased back from a negative IOD-like state and become more clearly neutral. Climate models predict the IOD will remain neutral for the coming months, consistent with its typical seasonal cycle. A neutral IOD has little influence on Australian climate.
The Madden–Julian Oscillation (MJO) remains in the western Pacific. The MJO is forecast to progress eastwards across the western Pacific over the coming fortnight, which would typically increase cloudiness and rainfall across northern Australia and the western Pacific. It also increases the chances that the monsoon will develop in the Australian region by encouraging westerly winds over the area. However, as these westerly winds get further into the western Pacific, they could act to temporarily weaken the La Niña.
The Southern Annular Mode (SAM) continues to be positive. It is forecast to remain at positive levels until the end of the year before returning to neutral. A positive SAM during summer typically brings wetter weather to eastern parts of Australia, but drier than average conditions for western Tasmania.
Climate change continues to influence Australian and global climate. Australia's climate has warmed by around 1.44°C for the 1910–2019 period. Rainfall across northern Australia during its wet season (October–April) has increased since the late 1990s. In recent decades there has been a trend towards a greater proportion of rainfall from high-intensity short-duration rainfall events, especially across northern Australia.
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Next update expected on 5 January 2022
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