What Is PlanetSentry? A Real-Time Natural Disaster Tracker Built On Open Data
PlanetSentry monitors wildfires, earthquakes, storms, volcanoes, and floods on a live 3D globe. Learn how it works and why open data matters for public disaster awareness.
How To Track Wildfires In Real Time Using Satellite Data And Open Monitoring Tools
Active wildfires can be tracked in real time using NASA satellites and open data. Here is how wildfire monitoring works and what tools are available for free.
Understanding Earthquake Data: Magnitude, Depth, And Intensity Explained
Earthquake data includes magnitude, depth, and intensity — but what do these numbers actually mean? This guide explains the key metrics and how to interpret them.
Satellite Imagery Layers Explained: What The Colors Actually Mean
Satellite imagery is not just photographs from space. Different layers reveal different phenomena. Here is what the colors mean and how to avoid misreading them.
Why Open Data Matters For Disaster Monitoring And Public Safety
Disaster data funded by taxpayers should be freely accessible. Here is why open data transparency matters for monitoring, journalism, education, and public trust.
How The NASA EONET API Works: Architecture, Categories, And Data Flow
NASA EONET is the backbone of many disaster tracking tools. Here is how the API works, what data it provides, and how PlanetSentry uses it.
GDACS Disaster Alerts Explained: How The Global Alert System Works
GDACS provides humanitarian severity context that raw event feeds miss. Here is how the global alert system works and why it matters for disaster awareness.
Why A 3D Globe Is Better Than A Flat Map For Visualizing Natural Disasters
Flat maps distort geography and break spatial intuition. Here is why a 3D globe is a better interface for understanding global natural disaster patterns.
Free Climate And Disaster Monitoring Tools: A Practical Comparison For 2026
Multiple free platforms track natural disasters and climate data. Here is how they compare and when to use each one for different monitoring needs.
How To Build A Daily Disaster Monitoring Routine Using Free Online Tools
A structured daily monitoring routine helps you spot important events early and avoid information overload. Here is a practical workflow using free tools.
How Earthquake Early Warning Systems Work: ShakeAlert, JMA, And The Science Of Seconds
Early warning systems detect P-waves and send alerts before damaging S-waves arrive. Understand how ShakeAlert, JMA, and similar networks buy critical seconds.
Richter Scale Vs Moment Magnitude: What Most People Get Wrong About Earthquake Size
Most people still say 'Richter scale' but scientists use moment magnitude (Mw). Here's why the switch happened and what earthquake magnitude numbers really mean.
Why Earthquake Depth Matters: Shallow Vs Deep Quakes And What They Mean For Damage
Depth is the hidden variable in earthquake damage. A shallow M6 can devastate a city while a deep M6 barely rattles windows. Here's the science behind it.
How Satellite Hotspot Detection Works: MODIS, VIIRS, And The Technology Behind Fire Alerts
Satellites detect fires from 700 km up using thermal infrared sensors. Understand how MODIS and VIIRS work and how fire data reaches platforms like FIRMS and PlanetSentry.
Tracking Wildfire Smoke Across Continents: How Satellite Data Reveals Air Quality Impact
Wildfire smoke drifts across entire continents, turning skies orange thousands of kilometers from the fire. Here's how satellites track it and what it means for air quality.
How Tropical Cyclones Are Tracked From Formation To Landfall: A Complete Guide
Tropical cyclones are among the most closely watched weather events on Earth. Here's how they are detected, classified, tracked, and forecast from formation to impact.
The Saffir-Simpson Scale And Why It Does Not Tell The Whole Story About Hurricane Danger
Category 1 through 5 tells you the wind speed, but hurricanes kill more people with water than wind. Here's why the Saffir-Simpson scale alone is misleading.
Volcanic Eruption Alert Levels: What Green, Yellow, Orange, And Red Mean For Safety
From quiet green to erupting red, volcanic alert levels guide evacuation and aviation decisions worldwide. Understand what each color means and when to pay attention.
The VEI Scale: Measuring Volcanic Eruptions From Gentle Lava Flows To Supervolcano Explosions
VEI 0 is a gentle lava seep. VEI 8 is a civilization-threatening supervolcano. The Volcanic Explosivity Index explains the vast range of eruption sizes in one scale.
How Tsunami Warning Systems Work: From Seafloor Sensors To Coastal Sirens
A tsunami can cross an ocean in hours but may arrive at nearby coasts in minutes. Here's how the global warning network races to detect, confirm, and alert before waves strike.
Flash Flood Monitoring: How Radar, Satellite Estimates, And Stream Gauges Detect Rising Water
Flash floods can go from dry creek to deadly torrent in under an hour. Here's how monitoring networks detect rising water using radar, satellites, and stream gauges.
Coastal Flooding Explained: Storm Surge, King Tides, And The Long-Term Rise Of Sea Levels
Storm surge can push water 6 meters inland in hours. King tides flood streets on sunny days. Sea level rise makes both worse. Understand the science and monitoring behind coastal flood risk.
Solar Storms And Their Impact On Earth: A Beginner's Guide To Space Weather
The sun ejects billions of tons of charged particles that can reach Earth in 1–3 days. When they arrive, power grids, GPS, and communications can fail. Here's the beginner's guide to space weather.
Understanding The AQI: What Air Quality Index Numbers Actually Mean For Your Health
AQI 50 is clean. AQI 150 is unhealthy for sensitive groups. AQI 300+ is hazardous for everyone. Here's what the Air Quality Index measures and what the numbers mean for daily decisions.
How Weather Satellites See The Earth: GOES, Himawari, Meteosat, And The Global Observation Network
Weather satellites image the entire Earth every 10 minutes from 36,000 km up. Understand the global network — GOES, Himawari, Meteosat — and how these spacecraft drive modern forecasting.
Remote Sensing 101: Active Vs Passive Sensors And How They Monitor Natural Disasters
Passive sensors measure reflected sunlight and emitted heat. Active sensors send their own signal and listen for the return. Both are essential for monitoring disasters from space.
Open Data APIs For Disaster Monitoring: A Developer's Guide To Free Real-Time Feeds
Build a disaster monitoring app with free APIs: EONET for events, USGS for earthquakes, FIRMS for fires, GDACS for alerts. Here's what each API offers and how to use them.
Seismic Monitoring Networks Explained: How Thousands Of Stations Watch For Earthquakes
Over 26,000 seismic stations worldwide listen for earthquakes around the clock. Here's how the global monitoring network is structured and what it can detect.
Aftershock Sequences: How Long They Last, What Patterns They Follow, And What To Expect
After a major earthquake, hundreds to thousands of aftershocks follow predictable statistical patterns. Here's what science knows about aftershock sequences and what to expect.
The Wildland-Urban Interface: Why Some Wildfires Become Catastrophic Disasters
When homes are built among flammable vegetation, routine wildfires become catastrophic disasters. The WUI is the fastest-growing land use type in the US — and the most fire-vulnerable.