GNSS Risk Assessment

Real-time impact assessment for GNSS/surveying operations

Current Risk

Calculating risk…

How This Works

The GNSS risk score combines four space weather factors that affect satellite navigation accuracy:

Kp Index (35%)

The planetary K-index measures geomagnetic disturbance. Higher Kp values correlate with ionospheric irregularities that degrade GNSS signals.

Bz Component (25%)

The north-south component of the interplanetary magnetic field. When Bz turns strongly southward (negative), it drives geomagnetic activity and ionospheric storms.

Solar Wind Speed (20%)

Fast solar wind streams compress the magnetosphere and can trigger geomagnetic activity. Speeds above 600 km/s are concerning for GNSS operations.

R-Scale / Radio Blackout (20%)

NOAA's Radio Blackout scale (R1–R5) indicates X-ray flare activity that directly affects radio propagation and can cause loss of GNSS lock on the sunlit hemisphere.

Operator Guidance

Low (0–19)

Normal operations. Standard monitoring procedures apply.

Moderate (20–39)

Minor degradation possible. Allow extra convergence time for PPP.

High (40–59)

Noticeable degradation. Monitor solution quality. RTK fix rates may decrease.

Severe (60–79)

Significant degradation. Consider postponing precision work. Avoid RTK.

Extreme (80–100)

Operations strongly discouraged. Expect loss of lock and major errors.