Dahej Chemical Zone Complex
MonitoringDahej Chemical Zone Complex · 21.7124°N, 72.5831°E
NOMINAL BASELINE:No thermal runaway detected in active 24-hr satellite overpass cycle. Facility operating within baseline envelope.
Continuous Polar SurveillanceLat:—Lon:—
|NASA FIRMS•VIIRS Satellites (Suomi NPP, NOAA-20, NOAA-21)
|Window:Last 24 Hours
Facility Information
NameDahej Chemical Zone Complex
TypeChemical Processing Facility
OSM IDosm_node_849201948
OperatorYashashvi Agro Chemical Ltd.
Land UseHeavy Industrial (PCPIR Geofenced Zone)
Nearby RiskResidential Settlement (2.4 km East)
Latest Detection Status
MONITORINGPhysical Overpass Timestamp
7 Nov, 06:21 (IST)
UTC: 2026-11-07 00:51:22.956Z
Classification Confidence97%
Likely ClassificationGas Flare
Thermal output: 1.8 MW (Sensor Temp: 304.2 K, Z-Deviation: +0.1σ). Regime: STABLE_BASELINE.
Core AI & Satellite Telemetry Intelligence Dossier
Sensor Telemetry
Band I-4 (3.74 µm)Radiance (FRP):1.8 MW
Brightness Temp:304.2 K (31.1°C)
Ground Sampling:375m Nadir (Dual-Gain MWIR)
Polar Platform:Suomi-NPP / NOAA-20 / NOAA-21
Coordinates:21.7124°N, 72.5831°E
Multi-Pass Persistence:142 passes
Sentinel-2 MGRS Tile:42QWJ
Sentinel-2 SWIR NBR:-0.08 (Nominal)
Direct polar overpass observation recorded at 2026-11-07 00:51:22.956Z.
GIS & Baseline Logic
CUSUM & VNFCUSUM Regime:STABLE_BASELINE (S+ = 0.00)
Z-Score Deviation:+0.1σ
NOAA VNF Flare ID:
VNF_IND_GEN_001Industrial Flaring System
VNF Flare Proximity:50 meters
OSM Geofence:INSIDE Industrial Cadastral Boundary
ESA WorldCover 10m:Built-up (Code 50 - Built-up)
Page's high-side CUSUM decision boundary calibrated at h = 4.0σ.
SHAP TreeExplainer (φi)
E[f(x)]: 16.6%FEATUREATTRIBUTION (φ)
Baseline Deviation-0.210
Fire Radiative Power (FRP)-0.185
VNF Flare Catalog Match-0.142
CUSUM Change-Point Score-0.115
Sensor Brightness Temp-0.062
Operational Synthesis
Fire Radiative Power (1.8 MW) conforms precisely to facility background pilot envelope.
Page's CUSUM statistic (S+=0.00) confirms STABLE_BASELINE (decision threshold h=4.0 not breached).
Direct spatial coincidence with registered NOAA VIIRS Nightfire catalog ID (VNF_IND_GEN_001).
Thermal Radiance History — Last 30 Days
Satellite observed Fire Radiative Power (MW) vs facility nominal background baseline
Observed Radiance (MW)
Nominal Baseline
Current: 1.8 MW
Recent Satellite Passes & Classification Log
Audited multi-temporal overpass record and change-point flags
| Overpass Date | Classification | Confidence | Radiance (MW) | Operational Intelligence Notes |
|---|---|---|---|---|
| 2026-11-07 | Gas Flare | 97% | 1.8 MW | Nominal observation. Consistent with regional baseline (0.1σ). |