The YGH Monitor can be accessed from the Apps page or directly at YGH Monitor.

The YGH Monitor has four main panels:

The header includes my business logo, the app title, and then the version of the app you're currently seeing. The most current version is V 2026.11.11b

The Feratured Stats panel pulls in data from GeyserTimes to show when the last reported eruptions were for each of the geysers shown on the monitor. You can condense these panels using the CONDENSE button and sort their display order using the dropdown.

The buttons here allow you to export the current view as an image to save or copy and set the color theme.

The bottom panel is whichever application is currently open to be used; either the Live Monitor, Archive Viewer, or Grand Checker. Each is noted below.

The Live Monitor allows viewing of the YGH data as it is available. The Infrasound Viewer and Seismic Viewer here are identical to the ones in the Archive and are described below. Only the Status and Timing Panels are unique to the Live Monitor as the former tells you when the most recent data was pulled and the latter controls how often and how much data is shown.

This panel shows the time of the last attempted data update, a countdown to the next update, and the time of the most recent data and it’s age in seconds.

This lets you set the time span of the windows and the refresh rate for the data.

Go to the Archive Tab to open the archive explorer.

This panel lets you get data for an eruption of a known feature and known time. Click "Find" after you have specified a feature and a date/time. The data fetched will automatically be from 30 minutes before the eruption time to 2 times the usual duration of that feature. The data gets autopopulated into the Get Data From panel which is desacribed below.

This panel lets you choose the time span to grab data from. A maximum of 6 hours is allowed due to file sizes. Click “Load” to pull in the data from EarthScope.

This panel displays the infrasound data. The x-axis is time in HH:MM, and y-axis is relative level of noise. A color key is on the right side for each feature. Each feature has it's real time data plotted (that's the bouncing line) and a smoothed average (the bolder line). Below the plot above the time is a color strip indicating ambient noise hitting the sensor array. Green means the ambient conditions are quiet, yellow means they are loud and may distort signals, and red means the sensors are being saturated with ambient noise.

These are the currently available directions to ‘aim’ the sensor at. By checking the features you will see their data traces come up on the Infrasound Viewer. When turned on you’ll also see a “now” value which is the relative loudness of that bearing, and an option to select the data to highlight it. Selecting the 'hl' button will make that data trace get brighter in the Infrasound Viewer.

This panel shows the seismic data arriving at the YGH Seismometer. The viewer can show multiple waveforms stacked on top of each other or overlaid. The exaggeration slider changes the amplification of the signal.

These are the currently available traces from the YGH seismometer. They each have their own frequency bands and orientations:

1. Oblong: Filtered for horizontal waves which move roughly north-south at frequencies of 3-5Hz
2. Doublet: Filtered for the slightly higher frequency and mostly vertical waves coming from Doublet Pool
3. Vertical: All vertical waves in the 0.5-10Hz range.
4. North-south: All horizontal waves moving north to south in the 0.5-10Hz range.
5. East-west: All horizontal waves moving east to west in the 0.5-10Hz range.
6. Horizontal, bearing: All horizontal waves moving along a user specified bearing.
7. 3-axis combined: All seismic waves in the 0.5-10Hz range in all three axis of motion combined.

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The overview window shows a summary of the data returned for the specified time range. The highlighted rectangualr box on the data shows the window of time currently shown in the Infrasound Viewer. The window can be clicked and dragged to move through data, clicking anywhere will move the window to that point. The size of the window can be changed using the window dropdown selector.

The Archive Viewer has the capability to create timestamps to read the data at that specific time.

You can get data at any point by right-clicking on the plot. This is only a temporary time stamp. Clicking anywhere else will erase this time stamp.

You can set permanent time stamps by left clicking on the plot. You can set as many of these as you'd like.

The Grand Checker is a tool for analyzing the infrasound data coming from Grand Geyser to help determine if one or more bursts occurred. It is currently in a beta phase and is explained in the Use Cases Blog post.