Space-weather data
Solar Wind Monitor Methodology
Solar-wind speed and Bz provide near-Earth context, but no isolated threshold guarantees geomagnetic activity or visible aurora.
Source version: GreenHalos Master Specification 1.0 ·
Verified first-party monitor
Current solar wind
- Speed
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- IMF Bz (GSM)
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- Total field
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- Observation time
- Verifying
- Source quality
- Verifying
Loading a hash-verified GreenHalos data object. No NOAA upstream is called by this browser.
Source: NOAA Space Weather Prediction Center (SWPC). Processing and visualisation: GreenHalos. Open official NOAA SWPC products.
Measurements and quality
NOAA SWPC real-time solar-wind products identify the active upstream spacecraft and data quality. GreenHalos preserves the source observation time and labels missing, partial or stale values rather than smoothing gaps into a continuous claim.
How to interpret Bz
A sustained southward Bz can favour coupling between the solar wind and Earth's magnetosphere, but magnitude, duration, speed, field strength and prior conditions all matter. GreenHalos does not publish a rule that one Bz reading predicts aurora.
Static-first delivery
Scheduled backend ingestion retrieves allowlisted NOAA products, validates and publishes compact first-party bundles. An ordinary visitor never creates a new NOAA request, database query or dynamic image transformation.