A single number from 0 to 100 representing the current geometric configuration of the heliospheric field system. It is not a storm intensity measurement. It is a geometric configuration measurement.

The qualitative classification of the current RFS scalar: Green, Yellow, Red. Phase bands use hysteresis, which means the system must sustain a level before reclassifying.

The overall condition of the field system in plain language: Coherent, Elevated, Disturbed, or Tightening. Free tier sees field state without the underlying scalar.

Whether the Coherence Precursor Score three-signal pattern is currently firing. Free tier sees yes/no only. Higher tiers expose score and signal breakdown.

Measures how the upper atmosphere has been conditioned by recent solar activity. Elevated TPI means the thermosphere is already expanded, affecting drag, orbital decay rates, and the depth of magnetospheric responses.

Relevant to satellite operators and aviation users.

A composite metric assessing field state from a launch-operations perspective. Low LWQ indicates elevated environmental stress on launch vehicle avionics and upper-stage orbital insertion accuracy.

Relevant to launch operations and aerospace teams.

Measures stability of the orbital environment for satellites in low and medium Earth orbit. Elevated solar activity increases atmospheric drag and can shift orbital parameters affecting conjunction analysis and station-keeping fuel.

Relevant to satellite operators and smallsat owners.

An internal estimate of the probability that a coronal mass ejection is in transit toward Earth's field system. It is a geometric probability assessment, not a physics propagation model.

Measures how coherently Earth's geosynchronous orbital field and ground-level field are responding together. High MCI indicates a coupled magnetosphere-to-ground response.

Measures how favorable the current Sun-Earth magnetic geometry is for efficient energy transfer into the magnetosphere. High FGS does not mean a storm is occurring. It means the field is geometrically configured to respond more efficiently if forcing arrives.

A 24h, 48h, and 72h probability window derived from CMEPS, FGS, SEP status, and current field state. It is a geometry-constrained probability envelope, not a deterministic forecast.

A research metric monitoring three simultaneous pre-event signals: field geometry elevation, orbital magnetometer deviation, and ground network dip/rebound. When all three activate together, historical analysis shows this configuration has preceded confirmed geomagnetic activity in the majority of examined cases.

A sustained period of elevated coherence activity. Episodes can last days to months during solar maximum periods. They are the sustained context within which discrete events occur.

A discrete spike of elevated activity within a sustained episode. Each note has a shape, amplitude, and position within the episode, which carries structural information about where the episode is in its lifecycle.

The geometric profile of how a CPS event develops: how steeply it rises, what trajectory the rise takes, and how it recovers relative to how it approached. Different event types have characteristic shapes that enable pattern recognition.

An event shape characterized by rapid rise, typically eight hours or less, and fast departure. Historically associated with fast impulsive CME impacts and sudden storm commencements.

The ratio of an event's recovery time to its rise time. Values above 1.0 indicate slower recovery than approach. Values near 1.0 indicate symmetric events. Values below 1.0 indicate faster recovery than approach.

The planetary K-index, a global measure of geomagnetic disturbance on a scale of 0 to 9. It remains one of the most widely used space-weather indices.

Disturbance Storm Time index. It measures ring current strength. More negative Dst corresponds to stronger geomagnetic storms.

A short-term reduction in galactic cosmic ray flux caused by the magnetic structure of an arriving CME. It is detectable in neutron monitor data within hours of storm onset and typically recovers over several days.

Magnetometers aboard NOAA's geostationary satellites at 6.6 Earth radii. The Hp component is one of the three CPS signals.

Five USGS magnetic observatories whose composite horizontal field response forms the ground-level CPS signal.