Sonic Booms?

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By an edhat reader

I’m hearing some low level sonic booms on the Mesa.  Intermittent all morning.  Was able to identify 2 aircraft flying tracks offshore near Vandenberg.  Perhaps one of these aircraft is refueling other aircraft responsible for the sonic anomalies?

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szq Mar 19, 2021 12:37 PM
Sonic Booms?

Was pretty intense up here by Refugio. I figured Vandenberg was up to something.

Davidb Mar 18, 2021 05:24 PM
Sonic Booms?

I have often heard low level distant explosions in Montecito. I was in the North County today, so not around to hear anything this time. I always assumed that I was hearing test shots from the missile range at San Nicolas Island (that was never confirmed, though).

a-1616109398 Mar 18, 2021 04:16 PM
Sonic Booms?

Yes! I heard on Westside too.

holazola Mar 18, 2021 12:13 PM
Sonic Booms?

Likely unrelated but interesting: I just looked at ADS-B exchange and I see a U2 flying laps around Edwards AFB! I have never seen a full red color track line before. Cruising at 60,000 ft.

https://globe.adsbexchange.com/?icao=ae094b

SouthCoastPhoto Mar 18, 2021 11:55 AM
Sonic Booms?

Given atmospheric conditions, these could be heard from the offshore test/evaluation ranges (far north as the central coast down to the San Diego/San Clemente) or even east out towards Edwards AFB based on altitude.

ScannerAndrew Mar 18, 2021 11:28 AM
Sonic Booms?

Defense Internet NOTAM Service states that there is an active military presence off the coast from heart castle down to point conception that started at 8:00 AM this morning and should last until 4:00 PM. There is also military presence south of the channel islands that will last until 7 PM. The two planes you showed don't fly faster than the speed of sound, so they are not causing the sonic booms. Due to the KC-135 flying there I'm assuming they're training fighter jets which is likely the cause for the sonic booms

Snorky Mar 18, 2021 11:43 AM
Sonic Booms?

I can see what do look like military-designated planes over the Channel Islands, the KC-135 seems to be returning to home base, and there is a C-12J Huron performing "racetracks" off VAFB coast. Source: the ADS-B Exchange (similar to what was originally posted).

local_lady Mar 18, 2021 11:32 AM
Sonic Booms?

Thank you, @scannerandrew, that must be it. Been hearing and feeling them all morning in Goleta, too.

Snorky Mar 18, 2021 11:16 AM
Sonic Booms?

Yes, I'm glad I am not the only one. Also...doubt a KC-135 would do it, it's subsonic

Mtn.driver Mar 18, 2021 11:06 AM
Sonic Booms?

Yes, hearing it too in Carpinteria.

a-1616090083 Mar 18, 2021 10:54 AM
Sonic Booms?

KC-135 passing gas.

SBisOk Mar 18, 2021 10:49 AM
Sonic Booms?

Ah, that's why my window keep rattling!

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