|Time Entered:||2019-02-25 19:30:19|
|Time Updated:||2019-03-03 09:18:03|
|Time Uploaded:||2019-03-03 09:18:03|
|Comments:||Reported by Miyeko Inafuku that "Xanterra snowcoach driver Laura L reports seeing Steamboat start at 1133." YNM Seismograph signal shows up at 1142. Note that the May 27 2018 eruption also had an earlier observed start than was initially reported on the seismo. While the start can be seen on the May eruption it was weaker and given the general reduction in the thickness of the traces recently, the guide observed start time might have been earlier than the big seismo signature. The 9/17/2019 eruption was observed before the seismo trace reacted, but only 2-3 minutes earlier in that case.|
|https://imgur.com/a/ILnRFeV||Here is the trace for this eruption on 02/25. Only processing was a bandpass filter (1 to 20 Hz); time is UTC. Unambiguous start time, as opposed to 05/27/2018, which had a weak start that is hidden in the noise on the seismogram posted to Utah's website (hence the late E time reported in GT).|
Time Entered:2019-02-27 13:18:38
Time Updated:2019-02-27 13:21:06
Time Uploaded:2019-02-27 13:20:57
|https://quake.utah.edu/station/heli2/20190225/YNM_SHZ_WY_01-20190225.png||YNM Seismograph 2019-02-25|
Time Entered:2019-03-01 09:03:50
Time Uploaded:2019-03-01 09:03:50
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