Biggest, last 24 hours
FIELD NOTES / Infrasound Station
Sound too low
to hear.
Live low-frequency air-pressure readings from our own sensor in Brevard County.
Rated on our own SCW Boom Scale.
Checking the live feed…
SCW BOOM SCALE · RIGHT NOW
–
Checking…
Biggest, last 7 days
Our own relative scale, compared to this sensor’s normal background. Not a magnitude or Mercalli intensity. How it works
Score: compared with this sensor’s normal background, 0 (calm) to 10.
Live infrasound
Wind makes constant chatter. A launch or sonic boom shows up as a sharp burst that stands out from it.
Waiting for dataThe chart appears once the first readings arrive.
Time, Eastern
Gaps stay blank.
- Trace (range band) lowest to highest reading in each time slice
- RMS band typical activity level in each slice (1 h to 7 days)
- Dashed lines ±1-minute RMS (10-min view)
- Peak biggest swing in view
- Off-chart spike taller than the scale
- Blank no data received (gap)
- Gray before our records start
The chart shows raw sensor readings. The headline number above is the SCW Boom Scale, which compares them with this sensor’s normal background.
PRESSURE ACTIVITY, LAST MINUTE
—
Typical activity (RMS) in raw sensor units. Higher means more activity.
BIGGEST SWING, LAST 10 MIN
—
Coverage: not available
Peak distance from the sensor’s resting level, in sensor units.
DEVICE TEMPERATURE
—
Inside the sensor’s electronics, in °F. Not outdoor air temperature.
24-hour record
One row per hour, oldest at the top, newest at the bottom. Each bar is one minute’s range. Like a classic drum recorder, a big event stands out as a tall smear across a row.
Building the recordRows fill in as the station collects data.
THE KEY
Reading the SCW Boom Scale
The scale, 0 to 10
Each step is about double the last. Examples are possibilities, not causes.
Event examples typical
Where real events have landed on our sensor. A score appears only after we record the event and match it to an independent source, such as the launch schedule or our lightning data.
| Event | Typical score | Recorded |
|---|---|---|
| Loading… | ||
Distance matters: the same kind of event scores higher close to the sensor and lower far away. Scores fill in as real events are recorded.
LEARN MORE
How our scale works
We measure tiny air-pressure swings at one spot in Brevard County, FL and compare them with this sensor’s normal quiet background. Each step up is about double the pressure swing.
Learn more about the scale
Like Richter: each number is a jump
On the Richter scale, each whole number is about 10× bigger waves. Ours steps up about 2× at a time, because the local events this sensor hears are much smaller than earthquakes.
Like Mercalli: it’s about here
Our number describes what this sensor measured here in Brevard County, not how big something was at its source. A far-off launch and a nearby truck can score the same.
What “normal” means
Normal is the middle (median) reading over the last seven days of saved history: the peak swing in each 5-minute window. Above normal starts at 1; each doubling adds one step, up to 10. Quieter than normal shows Calm (0). Until we have 24 hours of history, the baseline is still learning and levels are provisional.
Honest limits
This is not an official magnitude or intensity. Official earthquake magnitudes come from the USGS. There’s no number-for-number conversion between our scale and Richter or Mercalli.
Learn the readings: questions and answers
START HERE
How to read infrasound.
What is infrasound?
Sound below about 20 hertz, too low for people to hear. It travels a long way through the air. Rocket launches, sonic booms from returning boosters, thunder, surf and strong wind all make it.
Can it hear launches?
It can pick up launches and sonic booms. A launch or landing shows up as a burst that stands out from the background. Wind can look similar, and we don’t label any single burst as a launch automatically. Compare the time with the launch schedule.
Why sensor units and not decibels?
The charts show the sensor’s own raw readings, not pascals or decibels. For a quick read, use the SCW Boom Scale at the top.
What do “Live,” “Not updating” and “Offline” mean?
Live means the newest sample is under 60 seconds old. Not updating means the newest sample is older than that. Offline means the station itself reports no connection. None of these alone proves the hardware is broken.
The Space Coast Wire / Station Lab · Infrasound Station
Source: our own seismic and infrasound sensor in Brevard County, FL. Raw sensor readings rated on our own SCW scales. No station code, precise location, serial number or private network details are published. Times shown in Eastern Time.