RBoom Lightning Detection

[kpjamro]

Hi Harry

What the RBoom detects is thunder, not lightning.

I think 100 miles is certainly possible. More, if you get some sort of atmospheric ducting condition.

If you have an RShake, you can see it on there too. A really strong thunderclap will send you a seismic wave and then, some time later, the infrasound will arrive. If the seismometer is surface-mounted, then strong sounds will shake the earth surface and register on RShake as well at essentially the same moment as the infrasound. The difference between RS and RB response is that the sound easily goes down to below 1 Hz. But it gets progressively harder to shake the ground bas you go below 10 Hz.

see

Thunder Boom

We had a thunderstorm (not a big one) pass thru followed by a calm wind condition. This let RB clearly see thunder sounds as the storm receded. [thunder1] The thunder claps (at a distance) are relatively short impulses with a mostly 10-20 Hz energy content.[Thunder3-2020-06-05 23_55] One thing you can see - that is similar to distant artillery - is that the seismic surface wave arrives before the sound, followed by another seismic response that is the local surface being shaken by the sonic pu…

There are some storms that went by here a couple of hours ago, Below is what I am seeing (likely) from the storms a short while ago:

The strikes are not all that frequent (confirmed by Blitzortung - note the time scale) .

The storms are out over the ocean now so unlikely to register on RS. At the time of this trace, the storm was a bit over 100 miles away. The storms are about 160 miles away now and I don’t see them any more.

Ken