It was foggy overnight, but that had burned off by the time to head out in the morning. Turns out I got out to Grand earlier than necessary, so went over to Geyser Hill just to take a look. Returned to Grand about an hour later.<\/p>\n\n\n\n
Returned in time to see West Triplet start to erupt. May have also returned to a Turban Delay eruption, but not sure. In any case, it took nearly three hours for Grand to finally show signs of an imminent eruption. Once again, the waves on Grand took their time getting stronger, and Grand had several seconds of booping before the One Burst Eruption started. West Triplet finally started to erupt during Grand's eruption.<\/p>\n\n\n\n
2026-May-27 : 11:16:36 T1Q\n\n 11:15:34\tTurban\t-1m02s\n 11:15:48\tVent Ovfl\t-0m48s\n 11:16:30\tBoop\t-0m06s\n 11:16:36\tB1\t--- d=11m19s\n 11:18:35\tVent\t1m59s\n 11:27:55\tP1\t11m19s\n 11:29:08\tV&T Quit\t12m32s\n\n\t\t\t\t \t\u03a3D=11m19s\n\t* * * * *\n 08:25:10\t\t\td=03m55s \t\n 08:30:37\tWest Triplet d=02h52m \n 08:42:01\tInt: 16m51s\td=03m57s \t\n 08:59:51\tInt: 17m50s\td=03m46s \t\n 09:19:11\tInt: 19m20s\td=04m09s \t\n 09:37:58\tInt: 18m47s\td=03m27s \t\n 09:56:45\tInt: 18m47s\td=03m53s \t\n 10:16:53\tInt: 20m08s\td=03m36s \t\n 10:34:52\tInt: 17m59s\td=03m42s \t\n 10:53:33\tInt: 18m41s\td=03m28s \t\n\t\t Turban: 22m01s<\/pre>\n\n\n\nAnd as seems to happen too often, Castle began to erupt right after Grand's eruption ended. This time it was a major. The sky was still mostly clear, making this the first really nice day of the trip, one that felt like summer was here.<\/p>\n\n\n\n
In the afternoon, went out prepared for a long wait. It was a bit breezy and there were thunderstorms off in the distance. Wait through a couple of Turban intervals, and then the weather deteriorated. Wasn't much rain, but the wind suddenly got quite strong, so much so that I took down the camera tripod. That was also when we had the first Turban Delay interval.<\/p>\n\n\n\n
Once the weather passed, it was nice again, with no wind and the sun out making it warm. It was also the first time I encountered mosquitoes this trip, and I had to deploy our special New Zealand sandfly repellant. (It's from Australia, and I don't think it's legal here, but it works well.)<\/p>\n\n\n\n
We got our second Turban Delay on the second interval, and this time it was a minute longer than previous, and featured a small boop by Grand. Grand didn't even really start to fill until around the 22 minute mark.<\/p>\n\n\n\n
So now it took another three Turban intervals before our third Turban Delay. Once again, Grand was low until around the 24 minute mark. This time Grand's pool didn't drop just before the start of Turban's eruption. After about twenty seconds, Vent began to overflow, but even then Grand took its time getting started, with a series of boops.<\/p>\n\n\n\n
The One Burst Eruption abruptly stopped at the 8-1\/2 minute mark. This should have resulted in at least another burst, but while water appeared in Grand's vent, it never started the heavy sloshing and rising that characterizes a refill. We did stick around for a bit to see if there would be any afterplay, but there wasn't any. West Triplet also started just before the end of Grand's eruption.<\/p>\n\n\n\n
2026-May-27 : 19:59:40 D2\/D3\/D0\/T1C\n\n 19:58:59\tTurban\t-0m41s\n 19:59:17\tVent Ovfl\t-0m23s\n 19:59:35\tBoop\t-0m05s\n 19:59:40\tB1\t--- d=08m30s\n 20:02:07\tVent\t2m27s\n 20:08:10\tP1\t8m30s\nVent & Turban continue\n\n\t\t\t\t \t\u03a3D=08m30s\n\t* * * * *\n 17:03:16\t\t\td=04m39s \t\n 17:23:04\tInt: 19m48s\td=04m06s \t\n 17:57:42\tInt: 34m38s\td=04m31s D0\t\n 18:15:42\tInt: 18m00s\td=04m00s D1\t\n 18:51:18\tInt: 35m36s\td=05m31s D2\/D0 Boop: 18:48:16\t\n 19:08:52\tInt: 17m34s\td=04m17s D2\/D1\t\n 19:27:02\tInt: 18m10s\td=03m52s D2\/D2\t\n 20:07:13\tWest Triplet\n\t\t Turban: 31m57s<\/pre>\n","protected":false},"excerpt":{"rendered":"It was foggy overnight, but that had burned off by the time to head out in the morning. Turns out I got out to Grand earlier than necessary, so went over to Geyser Hill just to take a look. Returned to Grand about an hour later. Returned in time to see West Triplet start to … Continue reading \"Observations for 2025 May 27\"<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[133,4],"tags":[],"_links":{"self":[{"href":"http:\/\/geysers.org\/wordpress\/wp-json\/wp\/v2\/posts\/3928"}],"collection":[{"href":"http:\/\/geysers.org\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/geysers.org\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/geysers.org\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/geysers.org\/wordpress\/wp-json\/wp\/v2\/comments?post=3928"}],"version-history":[{"count":1,"href":"http:\/\/geysers.org\/wordpress\/wp-json\/wp\/v2\/posts\/3928\/revisions"}],"predecessor-version":[{"id":3929,"href":"http:\/\/geysers.org\/wordpress\/wp-json\/wp\/v2\/posts\/3928\/revisions\/3929"}],"wp:attachment":[{"href":"http:\/\/geysers.org\/wordpress\/wp-json\/wp\/v2\/media?parent=3928"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/geysers.org\/wordpress\/wp-json\/wp\/v2\/categories?post=3928"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/geysers.org\/wordpress\/wp-json\/wp\/v2\/tags?post=3928"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}