Contributors

Tuesday, September 28, 2021

BB-13..

24-hour accumulated rainfall (7 cm or more) realised over the country (from 0830 hrs IST of 27 th to 0830 hrs IST of 28 th September, 2021) 

 Telangana: Jakranpalle 23, Navipet 21, Dhar Palle (dist Nizamabad) 21, Ranjal (dist Nizamabad) 18, Dich Palle (dist Nizamabad) 18, Armur (dist Nizamabad) 18, Nandipet (dist Nizamabad) 17, Chandurthi (dist Rajanna Sircilla) 17, Sirsilla (dist Rajanna Sircilla) 17, Jammikunta (dist Karimnagar) 16, Bheemgal (dist Nizamabad) 16, Yeda Palle (dist Nizamabad) 15, Makloor (dist Nizamabad) 15, Ellanthukunta (dist Rajanna Sircilla) 15, Jukkal (dist Kamareddy) 15, Sarangapurnrl (dist Nirmal) 15, Velpur (dist Nizamabad) 15, Kothagudem, Khammam-11 each, Mahabubabad, Adilabad-9 each, Ramgundam, Medak, Kamareddy and -7 each  

Odisha: Cuttack-13, Gajapati-8, Jajpur-7

Madhya Maharashtra: Jalgaon-11, Kolhapur-7

Marathwada: Nanded-15, Aurangabad-13, Beed-11; Osmanabad and Latur-10 each; Jalna and Bir-8 each, Hingoli and Parbhani-7 each;

Vidarbha: Chandrapur-10; Buldana-9

Gujarat Region: Mehsana-9  

Saurashtra & Kutch: Amreli-12, Gir Somnath-8. Jamnagar, Junagarh, Morbi and Porbandar-7 each 

IMD Press realease

3 comments:

NilaY Wankawala said...

Credit Australian Government Bureau of metereology latest 28 09 2021

Issued 28 September 2021

The latest Climate Driver Update and Climate Model Summary are now available on the Bureau's website.

La Niña WATCH; negative Indian Ocean Dipole near its end

ENSO Outlook
Our ENSO Outlook provides
up-to-date information on the likelihood of an El Niño or La Niña developing.

ENSO Outlook dial showing La Niña WATCH status

Current status: La Niña WATCH
The El Niño–Southern Oscillation (ENSO) is currently neutral. However, recent model outlooks and cooling in the tropical Pacific Ocean mean the Bureau's ENSO Outlook status is at La Niña WATCH. In the past when La Niña WATCH has been reached, a La Niña event has subsequently developed around 50% of the time; this is approximately double the normal likelihood. La Niña events increase the chances of above-average rainfall for northern and eastern Australia during spring and summer.

Most oceanic and atmospheric indicators of ENSO remain within the ENSO-neutral range. However, sea surface temperatures in the central tropical Pacific Ocean have cooled over the past two to three months, supported by cooler than average waters beneath the surface. Climate models continue this cooling trend over the coming months, with three of the seven models surveyed by the Bureau meeting La Niña criteria, while two additional models briefly touch La Niña thresholds.

The negative Indian Ocean Dipole (IOD) event has weakened, with latest IOD values falling shy of negative thresholds. Should these values persist, it is likely that the negative IOD is near its end. However, the pattern of sea surface temperatures in the Indian Ocean remains likely to influence Australian rainfall over the coming months. A negative IOD increases the chances of above-average spring rainfall for much of southern and eastern Australia.

The Madden–Julian Oscillation (MJO) is currently weak, located over the western Maritime Continent, north of Australia. Most models forecast movement of the MJO towards the eastern Maritime Continent in the coming fortnight, but there is some disagreement between models as to the strength of the MJO during that period. Some models suggest a moderate strengthening while others maintain a weak MJO. If the MJO strengthens over the Maritime Continent region, it would encourage enhanced rainfall over the tropics to the north of Australia.

The Southern Annular Mode (SAM) index has mostly been positive for the past five weeks. It is forecast to remain positive for October to December. This forecast is supported by a combination of a strengthened polar vortex over Antarctica, as well as the likelihood of La Niña development. A positive SAM during spring typically brings wetter weather to eastern parts of Australia, but may be drier for western Tasmania.

Climate change continues to influence Australian and global climate. Australia's climate has warmed by 1.44 ± 0.24 °C over 1910–2019, while southern Australia has seen a reduction of 10–20% in cool season (April–October) rainfall in recent decades. Rainfall across northern Australia during its wet season (October–April) has increased since the late 1990s with a greater proportion of high intensity short duration rainfall events.

More information

Media enquiries: (03) 9669 4057 media@bom.gov.au

Next update expected on 12 October 2021

sset said...


https://bangaloremirror.indiatimes.com/bangalore/others/experts-say-bengaluru-is-warming-up/articleshow/86355910.cms#:~:text=According%20to%20weather%20experts%2C%20the,risen%20beyond%2031%20degree%20Celsius.

Entire Cauvery is dry with no rains since June ! Drought for Karnataka, Kerala

North Bay Systems are no good for southern India, we need systems in lower bay latitude to cross south east india, westerlies to augment sw india. Entire swm was dominated by MAHA, central india, guj - major gainer for september rains.
North bay system during tail end of SWM is a disaster for NEM onsert which is lifeline for SE India.

sset said...

IMD red alerts for Gujarat.
Looks like torrential dump of 300-400mm. Will this be repeat of 2013 september ?

25th October... SWM Withdraws.. & NEM sets in. (Estimated earlier  in Vagaries on 14th)  See (below) complete withdrawal dates from coun...