Bhārata Strata · Maharashtra · Thane · rainfall trajectory
Rainfall & monsoon trend — cell 4970002132
How rainfall has changed over 125 years at this Thane locality cell — witnessed by IMD, every trend a Theil–Sen slope with its GUM standard error and a Mann–Kendall significance test. Missing is never zero.
Annual rainfall trend
-57 ± 16 mm/decade
highly significant · p = 0.001
Mann–Kendall τ
-0.21
monotonic trend strength · 125-year record
Annual mean
2,853 mm
interannual CV 24%
Recent 30y − first 30y
-322 mm
long-run shift in annual total
witness: tier_q_v1 — IMD gridded rainfall dynamics · 125 years · grid-assign 13.5 km · as of 2025-12-31 00:00 UTC
Seasonal decomposition
Monsoon (JJAS) trend
-54 ± 16 mm/dec
mean 2,716 mm · 95% of annual
Pre-monsoon trend
-0.2 mm/dec
mean 22 mm
Post-monsoon trend
-0.5 ± 1.8 mm/dec
mean 113 mm
Winter trend
0 mm/dec
mean 2.4 mm