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 5 Highest Daily Events
Custom Regional Climatology Leaderboard
Only stations with data starting from 2005 or earlier, and containing at least 15 years of recorded data, are included for accuracy.
Top 20 Leaderboard
District-Wise Top 5 Stations Breakdown
Top 5 performing stations for each selected district.
ENSO and IOD Phase Analysis
⚠️ 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.
Year-by-Year Record
Spatial Distribution Map
IDW Map Studio
Processing IDW Interpolation...