| Note ID | Start Time (US/Mountain) | End Time (US/Mountain) | Entrant | Note |
| 7642 |
26 Jun 1986 @ 1800 |
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research-mab |
6-26-1986 Fan Geyser – Dormant, full & overflowing slightly opalescent water. Stromatolite growth forms around vent are all dead & silicified. T=193º |
| 7605 |
11 Feb 1984 @ 1800 |
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research-mab |
02/11/1984 Fan Geyser – 29ºC Water flowing in from east, Yellow l. brown algae in vent. |
| 7666 |
31 Aug 1983 @ 1800 |
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research-mab |
8-31-83 Fan G Quiet, water flowing in. 36ºC |
| 5086 |
24 Jun 1980 @ 1800 |
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research-mab |
06/24/1980 Fan Geyser was seen in eruption today. |
| 5144 |
27 Sep 1979 @ 1800 |
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research-mab |
09/27/1979 Fan – 201ºF clear water, but lower level |
| 5004 |
20 Sep 1979 @ 1800 |
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research-mab |
09/20/1979 Disturbance Fan Geyser – erupting to 1 foot with a noisy boil. No overflow 200ºF |
| 5939 |
25 Mar 1973 @ 1800 |
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research-mab |
03/25/1973 Fan {no time} The periods of minor play this evening was generally 10-15 seconds in duration and seemed to indicate that an eruption of Fan was imminent. During a half hour of close observation (until it got dark) the intervals between periods of minor play with heavy runoff were as follows:
2m30s, 1m45s, 1m50s, 2m35s, 1m15s, 0m35s, 3m10s, (Africa and Fireball start up), 4m35s, 0m40s, 1m20s, 3m20s, 2m55s, 0m30s (Africa&Fireball active)
It is quite probable that Fan may have played within the last half hour. (Ave of 13 intervals: 125 sec, range 30-275 sec) |
| 6505 |
15 May 1972 @ 1800 |
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research-mab |
05/15/1972 Fan – plays 1’-3’ frequently 199º |
| 6307 |
14 May 1972 @ 1800 |
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research-mab |
05/14/1972
The following geysers have been seen erupting since I arrived last night:
Ledge 6-10’, Iris 2-3’, Little Whirligig 15’, Basin 1’-2’, Fan 4’-5’, Bear Den, Feisty, Fireball 2-3’, Minute 1’-2’, Blue 7-15’, Africa 25-35’, Vixen 7’-15’, Dr Morey’s Porkchop 3’-5’, Echinus 10’-40’, Steamboat 5-20’ |
| 7672 |
12 Aug 1970 @ 1800 |
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research-mab |
08/12/1970
Much activity in Porcelain in late pm (6-7)
Arsenic, Fireball, and Fan went off in succession.
8/12/1970 Dark Cavern had extended eruption also. |
| 7497 |
09 Jul 1969 @ 1200 |
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research-mab |
07/09/1969 Fan putting out small amounts of H2O all morning. |
| 20562 |
21 Aug 1967 @ 1800 |
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research-mab |
08/21/1967
The new geyser in Porcelain Basin has cleared up, but is more back to its normal 1 ft boiling. |