Monsoon · Rainfall

High Rainfall days in India’s districts in July 2022

For July 2022, an analysis of the daily district wise rainfall data from India Meteorological Department (IMD) shows that there were 809 (717 in July 2021) instances when district rainfall of a day was above 50 mm. [Considering that the normal monthly rainfall of India July is 285.3 mm, the average daily rainfall in this month is about 9.2 mm.] Such high rainfall instances included 663 (595 in July 2021) instances when rainfall was 50-100 mm, 107 (98 in July 2021) instances when it was 100-150 mm, 28 (17 in July 2021) times it was 150-200 mm and 16 (7 in July 2021) times above 200 mm. Interestingly, in June 2022[i] there were twenty seven instances when rainfall was above 200 mm, when the rainfall is supposed to be much below July rainfall. As noted in detailed article[ii], the July 2022 rainfall all over India was 16.8% above normal.

Out of 703 districts of India, 315 districts or about 44.8 % (51.4% in July 2021) of the districts experienced this. There were many districts that had more than one such high rainfall days in July 2021. The highest number of such instances were seen in Maharashtra, followed by Gujarat.

Among the five regions of India (North, South, East, West and North East), West India again, like in July 2021, had the highest number of such instances at 376 (156 in July 2021), followed by South India (224) and North East India (95). East India had the least such instances at 58.

North East India In June 2022, there were higher number of instances of high rainfall in NE India in terms of number of districts (67), number of district days for 50-100 mm rainfall (195), Number of district days for 100-150 mm rainfall (56), number of district days for 150-200 mm rainfall (24) and number of district days for above 200 mm rainfall (29). The overall number of such high rainfall district days in June 2022 were at 304, more than three times that in July 2022.

StateDistricts that had over 50 mm rainfall at least on one day in July 2022 (Total no of districts)No of district days when rainfall 50-100 mmNo of district days when Rainfall 100-150 mmNo of district days when Rainfall 150-200No of district days when Rainfall over 200 mmTotal no of district days when rainfall over 50 mm
Arunachal Pradesh10 (16)1831022
Assam18 (27)3600036
Meghalaya8 (11)1610017
Nagaland3 (11)40004
Manipur2 (9)20002
Mizoram6 (8)62008
Tripura4 (8)40004
Sikkim2 (4)20002
North East India53 (94)8861095

East India

StateDistricts that had over 50 mm rainfall at least on one day in July 2022 (Total no of districts)No of district days when rainfall 50-100 mmNo of district days when Rainfall 100-150 mmNo of district days when Rainfall 150-200No of district days when Rainfall over 200 mmTotal no of district days when rainfall over 50 mm
W Bengal4 (19)70007
Odisha19 (30)2810029
Jharkhand2 (24)20002
Bihar7 (38)70007
Uttar Pradesh11 (75)1210013
East India43 (186)5620058

North India

State/ Union TerritoryDistricts that had over 50 mm rainfall at least on one day in July 2022 (Total no of districts)No of district days when rainfall 50-100 mmNo of district days when Rainfall 100-150 mmNo of district days when Rainfall 150-200No of district days when Rainfall over 200 mmTotal no of district days when rainfall over 50 mm
Uttarakhand5 (13)80008
Haryana11 (22)1200012
Chandigarh1 (1)40004
Delhi9 (9)1320015
Punjab10 (22)1410015
Himachal Pradesh5 (12)60006
Jammu & Kashmir8 (20)1710018
Ladakh0 (2)00000
North India49 (101)7440078

West India

StateDistricts that had over 50 mm rainfall at least on one day in July 2022 (Total no of districts)No of district days when rainfall 50-100 mmNo of district days when Rainfall 100-150 mmNo of district days when Rainfall 150-200No of district days when Rainfall over 200 mmTotal no of district days when rainfall over 50 mm
Rajasthan13 (33)1600016
Madhya Pradesh30 (52)5661063
Diu Daman2 (2)881118
Gujarat24 (33)70192798
Dadra Nagarhaveli1 (1)820313
Goa2 (2)1033016
Maharashtra24 (36)802362111
Chhattisgarh20 (27)3731041
West India116 (186)285641413376

South India

StateDistricts that had over 50 mm rainfall at least on one day in July 2022 (Total no of districts)No of district days when rainfall 50-100 mmNo of district days when Rainfall 100-150 mmNo of district days when Rainfall 150-200No of district days when Rainfall over 200 mmTotal no of district days when rainfall over 50 mm
Andhra Pradesh2 (13)20002
Telangana24 (33)57187284
Tamil Nadu6 (38)71008
Puducherry2 (4)51006
Karnataka9 (30)59111071
Kerala9 (14)4240046
Lakshadweep0 (1)00000
Andaman & Nicobar2 (3)61007
South India54 (136)1783682224

Date wise High Rainfall Events In the table below we have given total daily high rainfall events in the same categories as above (50-100 mm, 100-150 mm, 150-200 mm, 200+ mm) in districts of India in July 2022, the second month of SW Monsoon 2022. The Highest number of such high rainfall district days events happened on 13th July (61 events, against highest one day number of 54 events in July 2021) and 14th July (59 events). The lowest number of such events happened on July 22, 25 and 29 (7 events on each of them).  

Date in July 2022No of district days when rainfall 50-100 mmNo of district days when rainfall 100-150 mmNo of district days when rainfall 150-200 mmNo of district days when rainfall over 200 mmTotal No of district days when rainfall over 50 mm
13331138
21720019
31500015
41500015
52164031
62373033
71560021
823111035
93680044
102993041
113960247
123661447
134595261
144581559
153052138
161700017
172230025
182720029
192041025
201010011
213300033
2261007
232511027
241640020
2570007
261300114
27910010
2880008
2961007
3071008
311520017
TOTAL IN JULY 2022 (July 2021 figures in bracket)663 (595)107 (98)23 (17)16 (7)809 (717)

INDIA In the table below we have tabulated the figures for July 2022 for each region and also given in brackets the figures for July 2021. We can see that while the number of high rainfall events in July 2022 are higher at all India level for each high rainfall range and also for total number of such events across all high rainfall range, they are much lower for North, East and North East, but much higher for West and South India.

RegionDistricts that had over 50 mm rainfall at least on one day in June 2022/(Total no of districtsNo of district days when rainfall 50-100 mm (July 2021)No of district days when Rainfall 100-150 mm (July 2021)No of district days when Rainfall 150-200 (July 2021)No of district days when Rainfall over 200 mm (July 2021)Total no of district days when rainfall over 50 mm (July 2021)
North East53/ 9488 (69)6 (8)1 (0)0 (0)95 (77)
East43/ 18656 (135)2 (21)0 (4)0 (1)58 (161)
North49/ 10174 (101)4 (9)0 (0)0 (1)78 (111)
West116/ 186285 (156)64 (50)14 (10)13 (5)376 (221)
South54/ 136178 (134)36 (10)8 (3)2 (0)224 (147)
INDIA (July 2021)315/ 703 (357/ 694)663 (595)107 (98)23 (17)16 (7)809 (717)

SANDRP (ht.sandrp@gmail.com)

REFERENCES:

[i] https://sandrp.in/2022/07/14/june-2022-high-rainfall-district-days-in-indias-sw-monsoon/

[ii] https://sandrp.in/2022/08/05/june-july-2022-district-wise-rainfall-in-in-indias-sw-monsoon/

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