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H1 SEI (SEI)

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corey.gray@LIGO.ORG - posted 19:59, Wednesday 11 January 2017 - last comment - 21:47, Wednesday 11 January 2017(33170)

Earthquake Report: 5.3 in Guatamala, Lockloss on L1 & Then H1

EQ seen on USGS & Terramon after lockloss at 3:38utc (L1 also dropped a few minutes earlier), but NOTHING showed up on BLRMS until 3:48utc (very odd!) & didn't see huge signal on tidal striptool...so was hesitant to mark this as an EQ, but it finally showed up on BLRMS.
Magnitude: 5.3
Location: Guatamala
Starting time of event: Pretty much the H1 lockloss was when I noticed it and saw that it was already on USGS/Terramon
Lock status? L1 dropped out of lock followed by H1 a few minutes later.

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krishna.venkateswara@LIGO.ORG - 21:47, Wednesday 11 January 2017 (33171)

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This was a low magnitude but relatively close event which implies higher frequency ground motion. You can see a spike in the 0.3-1 Hz blrms at the lockloss time. I suspect that is what caused the lockloss.