FIELD NOTES / SCW Scales
Shake, Boom
& Magnetic.
Our three sensors in Brevard County, FL, each rated 0 to 10 against its own normal background.
All three live, on one chart.
See the actual sensor output (raw reading): Seismic raw trace → · Infrasound raw trace → · Magnetometer raw field →
Our own relative scales, each compared with its sensor’s normal background. Not a magnitude, Mercalli intensity, Kp index or G-scale. Official earthquake magnitudes come from the USGS; official space weather comes from NOAA.
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How the three scales work
Each sensor is compared with its own normal quiet background. Each step up is about double. 0 means calmer than normal; 10 is the top of the scale.
What each scale measures
SCW Shake Scale (seismic)
Ground motion at one spot in Brevard County. The reading is the biggest swing in a 5-minute window. Open the seismic page.
SCW Boom Scale (infrasound)
Air-pressure swings too low to hear. Same method as the Shake Scale. Open the infrasound page.
SCW Magnetic Scale (magnetometer)
How much the magnetic field wandered over the last 30 minutes. Open the magnetometer page, which also shows NOAA’s official Kp index.
Why the lines can differ
The sensors measure different things. A truck can raise Shake without Boom; thunder can raise Boom first; space weather moves only Magnetic. Normal for each is the median of its last seven days of saved history.
The Space Coast Wire / Station Lab · SCW Scales
Source: our own seismic, infrasound and magnetometer sensors in Brevard County, FL. No station code, precise location, serial number or private network details are published. Times shown in Eastern Time.