Plain-language answer: The NOAA Space Weather Scales summarize radio blackouts (R), solar-radiation storms (S), and geomagnetic storms (G) from level 1 to 5.
Why operators care
The three scales describe different physical events and operational effects. An R3 radio blackout is not the same event as a G3 geomagnetic storm, and their timing and affected paths differ.
How to use it well
Read the scale letter, level, event time, and affected geography before changing bands or routes.
The common mistake
Quoting only the number and ignoring whether it is an R, S, or G event.
Operating boundary
Predictions, reports, schedules, and mode descriptions guide a decision; they do not override current regulations, equipment limits, exact station conditions, or what the operator verifies on air.
