What a live map can and cannot tell you

A marker represents an observation

A point on a live map can be a sensor detection, an agency report or a processed record. Those are not interchangeable. An earthquake record describes a seismic event reported by a network; a satellite active-fire detection is an observation from an instrument, not a confirmed assessment of damage or a measured burned area.

The source, collection method and status matter more than the visual urgency of a marker. USGS brings together earthquake parameters and related products from seismic networks. NASA FIRMS publishes near-real-time active-fire detections and later replaces some archive data with standard science-quality products. A map that refreshes quickly can still contain provisional or revisable observations.

Publisher documentation: USGS — ANSS Comprehensive Earthquake Catalog · NASA FIRMS — Active Fire Data

Read three clocks and one place

Separate when an event happened, when the source published or updated it, and when your map retrieved it. A newly loaded marker may describe an older observation. Also inspect what the coordinates mean: they may be an estimated epicentre, the centre of a satellite pixel or a reported location, each with different spatial precision.

• Open the original source record and check its latest status before sharing a marker.
• Look for revisions to magnitude, location, confidence or event classification.
• Treat gaps in the feed as unknown coverage, not proof that nothing happened.
• Keep observations separate from impact claims such as casualties, damage or causes.

Use the map as a route to evidence

A useful live map lets you narrow a place and time, see the publisher and open the underlying record. Humaps attaches source and verification context to live signals where the feed provides it. The safest conclusion is often a short one: what was detected, by whom, at what time, and what remains unconfirmed.