Overnight we got at least an inch of wet slushly snow. By dawn, there were still light snow showers, and a strong wind from the northwest. The walkway wasn't as slippery as I expected, probably because it was slush instead of ice.<\/p>\n\n\n\n
Uncertain was gurgling with occasional splashes, so I spent about twenty minutes watching it, but nothing much changed during that time. So went over to Grand. Rift's runoff channel was snow-free, indicating it probably erupted in the last few hours. Arrived just in time to catch the start of a Turban eruption. That was followed by an almost 30 minute long Turban Delay interval.<\/p>\n\n\n\n
With the wind, most of the steam was being pushed to the south so that Grand's pool was easily visible. Three Turban eruption intervals later, Grand filled nicely. Turban started, and then it appeared Vent was overflowing. It took Grand nearly a minute to start erupting, after a series of boops. The wind was still making the One Burst Eruption visible.<\/p>\n\n\n\n
2026-May-21 : 08:02:16 D3\/T1C\n\n 08:01:23\tTurban\t-0m53s\n 08:01:39\tVent Ovfl\t-0m37s\n 08:02:10\tBoop\t-0m06s\n 08:02:16\tB1\t--- d=09m29s\n 08:04:30\tVent\t2m14s\n 08:11:45\tP1\t9m29s\nVent & Turban continue\n\n\t\t\t\t \t\u03a3D=09m29s\n\t* * * * *\n 06:41:47\t\t\td=03m06s \t\n 07:11:09\tInt: 29m22s\td=04m20s D0\t\n 07:28:27\tInt: 17m18s\td=03m46s D1\t\n 07:44:58\tInt: 16m31s\td=03m28s D2\t\n\t\t Turban: 16m25s<\/pre>\n\n\n\nFollowing the eruption, stopped in at Sawmill and Uncertain again. Sawmill's pool level was high, and Uncertain was having strong splashes. Then Sawmill started, quickly overflowing as Uncertain's activity seemed to die down. At that point I decided to head back in to warm up and dry out.<\/p>\n\n\n\n
With Grand having several short intervals since we arrived, decided I should not delay my arrival. The weather was dry, but windy. I had just passed West Triplet when Grand boiled up, starting the One Burst Eruption. As with this morning, the best view was at the north.<\/p>\n\n\n\n
2026-May-21 : 14:16:19 G1Q\n\n 14:16:19\tB1\t--- d=11m17s\n 14:16:27\tTurban\t0m08s\n 14:19:21\tVent\t3m01s\n 14:27:36\tP1\t11m17s\n 14:28:29\tV&T Quit\t12m09s\n 14:40:06\tV&T Restart\t23m47s\n\n\t\t\t\t \t\u03a3D=11m17s\n\t* * * * *\n 14:26:39\tWest Triplet\td=26m13s<\/pre>\n\n\n\nWest Triplet started near the end of the Grand eruption. I waited to see if Rift might start, but West Triplet had a duration less than necessary to trigger Rift.<\/p>\n\n\n\n
With all the recent shorter intervals for Grand, I decided it was better to be there early. It was just before sunset, with a clear sky and a cold wind coming from the north. I arrived to find Grand in a heavy overflow, most likely a Turban Delay interval. West Triplet had also just ended an eruption.<\/p>\n\n\n\n
Four Turban eruption intervals later, there was a second Delay interval. At that point, it was dark and frost was starting to form on the boardwalks. I decided it was time to head back in.<\/p>\n\n\n\n
2026-May-21 : 20:12:35\n\n 20:22:42\t\t\td=04m51s \t\n 20:40:01\tInt: 17m19s\td=03m46s \t\n 20:59:42\tInt: 19m41s\td=03m55s \t\n 21:20:06\tInt: 20m34s\td=03m33s \t\n 21:48:57\tInt: 28m51s\td=04m25s D0\t<\/pre>\n","protected":false},"excerpt":{"rendered":"Overnight we got at least an inch of wet slushly snow. By dawn, there were still light snow showers, and a strong wind from the northwest. The walkway wasn't as slippery as I expected, probably because it was slush instead of ice. Uncertain was gurgling with occasional splashes, so I spent about twenty minutes watching … Continue reading \"Observations for 2026 May 21\"<\/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\/3899"}],"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=3899"}],"version-history":[{"count":3,"href":"http:\/\/geysers.org\/wordpress\/wp-json\/wp\/v2\/posts\/3899\/revisions"}],"predecessor-version":[{"id":3904,"href":"http:\/\/geysers.org\/wordpress\/wp-json\/wp\/v2\/posts\/3899\/revisions\/3904"}],"wp:attachment":[{"href":"http:\/\/geysers.org\/wordpress\/wp-json\/wp\/v2\/media?parent=3899"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/geysers.org\/wordpress\/wp-json\/wp\/v2\/categories?post=3899"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/geysers.org\/wordpress\/wp-json\/wp\/v2\/tags?post=3899"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}