TN Rainfall Explorer
Interactive Historical Climatology & Spatial Dashboard
Station A (Primary)
Station B (Comparison)
Climatology Analytics
Mean Annual
-- / --
Med: -- / --
Wettest Year
-- / --
-- mm / --
Driest Year
-- / --
-- mm / --
Distribution
Skew: -- / --
Kurt: -- / --
Dispersion
SD: -- / --
CV: -- / --
IQR: -- / --
Winter (JF)
-- / --
--% / --% of Ann.
Pre-Monsoon (MAM)
-- / --
--% / --% of Ann.
SW Monsoon (JJAS)
-- / --
--% / --% of Ann.
NE Monsoon (OND)
-- / --
--% / --% of Ann.
| IMD Class | Sta. A | Sta. B |
|---|---|---|
| Light Rain (2.5 - 15.5 mm) | -- | -- |
| Moderate (15.6 - 64.4 mm) | -- | -- |
| Heavy Rain (64.5 - 115.5 mm) | -- | -- |
| Very Heavy (115.6 - 204.4 mm) | -- | -- |
| Extremely Heavy (204.5 - 244.4) | -- | -- |
| Exceptionally Heavy (≥ 244.5) | -- | -- |
| Total Rainy Days | -- | -- |
Extreme Rainfall Thresholds
≥ 50 mm
-- / --
≥ 100 mm
-- / --
≥ 150 mm
-- / --
≥ 200 mm
-- / --
≥ 250 mm
-- / --
Top 20 Leaderboard
District-Wise Top 5 Stations Breakdown
Top 5 performing stations for each selected district.
Processing IDW Interpolation...
IMD Gridded Maps (1901-2025)
Historical Station Maps (1901-1970)
⚠️ Development / Early-Stage Analysis
ENSO and IOD rainfall relationships presented here are currently under development. Results are intended for exploratory climatological analysis and should be interpreted with caution. Further validation, data-quality checks, phase definitions and statistical testing are planned before these results are considered operational or predictive.
IOD Phase Rainfall Analysis
Indian Ocean Dipole phase rainfall analysis using NOAA/CPC OND DMI to classify rainfall years.
IOD classification uses official NOAA/CPC OND Dipole Mode Index values (1950–2025). CPC source
Composite Mean by IOD Phase
Error bars = ±1 std dev. Dashed line denotes long-term rainfall baseline.
Standardized Anomaly & Macro Trend
Bars denote exact year z-score (coloured by IOD). Line shows 5-yr rolling average.