Last Known Eruption
14y 292d 9h 44m ago

Latest Eruptions

Eruption DurationInterval
03 Oct 2004 @ 131017d 20h 55m
15 Sep 2004 @ 1615 A2y 19d 4h 14m
28 Aug 2002 @ 120120m 48d 22h 23m
10 Jul 2002 @ 13389m 5d 12m
05 Jul 2002 @ 13261y 78d 20h 32m
17 Apr 2001 @ 165410m 37s 255d 22h 11m
04 Aug 2000 @ 184337d 6h 41m
28 Jun 2000 @ 1202276d 19h 32m
25 Sep 1999 @ 163015m 64d 51m
23 Jul 1999 @ 15394d 54m
19 Jul 1999 @ 144512d 4h 48m
07 Jul 1999 @ 09574m 1y 358d 1h 33m
14 Jul 1997 @ 08242y 79d 22h 29m
26 Apr 1995 @ 09553y 270d 18h 29m
30 Jul 1991 @ 15266m 1y 42d 3h 33m
18 Jun 1990 @ 11537m 1d 19h 29m
16 Jun 1990 @ 1624332d 23h 9m
18 Jul 1989 @ 1715>10m 4y 317d 2h 35m
05 Sep 1984 @ 144012d 23h 45m
23 Aug 1984 @ 14552y 97d 18h 45m
18 May 1982 @ 20102m 8m
18 May 1982 @ 2002277d 10h 39m
14 Aug 1981 @ 092312d 20h 59m
01 Aug 1981 @ 12246m 5d 1h 34m
27 Jul 1981 @ 10502d 22h 47m
24 Jul 1981 @ 12035d 21h 43m
18 Jul 1981 @ 14204d 22h 46m
13 Jul 1981 @ 15349m 1d 0m
12 Jul 1981 @ 15349m 313d 56m
02 Sep 1980 @ 14386d 22h 30m
26 Aug 1980 @ 1608 ie4d 19m
22 Aug 1980 @ 154911d 27m
11 Aug 1980 @ 1522 ie3d 1h 45m
08 Aug 1980 @ 133712d 22h 11m
26 Jul 1980 @ 152636d 3h 34m
20 Jun 1980 @ 11521y 285d 9m
09 Sep 1978 @ 11434d 20h 53m
04 Sep 1978 @ 145027d 23h 5m
07 Aug 1978 @ 15451d 4h 42m
06 Aug 1978 @ 11034d 18h 40m
01 Aug 1978 @ 16232m 1h 28m
01 Aug 1978 @ 14553m 8d 40m
24 Jul 1978 @ 14152d 45m
22 Jul 1978 @ 1330 ie9d 3h 43m
13 Jul 1978 @ 09472d 1h 2m
11 Jul 1978 @ 084513d 22h 16m
27 Jun 1978 @ 10292m 11s 4d 20h 54m
22 Jun 1978 @ 1335 ie3d 22h 20m
18 Jun 1978 @ 151545m
18 Jun 1978 @ 143030m
18 Jun 1978 @ 14004d 21h 35m
13 Jun 1978 @ 16251m 3s 12d 2h 9m
01 Jun 1978 @ 1416324d 20h 43m
11 Jul 1977 @ 1733315d 56m
30 Aug 1976 @ 16372m
30 Aug 1976 @ 16354d 3h 48m
26 Aug 1976 @ 1247 A20h 42m
25 Aug 1976 @ 1605 A2y 70d 16h 5m
17 Jun 1974 @ 0000 A1y 96d 4h 51m
12 Mar 1973 @ 18091d 2h 29m
11 Mar 1973 @ 1540 A160d 25m
02 Oct 1972 @ 1615 A58d 6h 1m
05 Aug 1972 @ 10142m 7m
05 Aug 1972 @ 10072m 27m
05 Aug 1972 @ 09402m 4d 22h 32m
31 Jul 1972 @ 11084m
31 Jul 1972 @ 110418d 7h 34m
13 Jul 1972 @ 0330 A6d 2h 21m
07 Jul 1972 @ 01092m 34m
07 Jul 1972 @ 0035 A2d 53m
04 Jul 1972 @ 23422m 32m
04 Jul 1972 @ 23102m 40s 2d 1h 54m
02 Jul 1972 @ 21161m 50s 21m
02 Jul 1972 @ 2055 A6d 5h 10m
26 Jun 1972 @ 15454d 6h 25m
22 Jun 1972 @ 09207m
22 Jun 1972 @ 09132d 19m
20 Jun 1972 @ 085439m
20 Jun 1972 @ 08151d 21h 40m
18 Jun 1972 @ 10352m 15s 5m
18 Jun 1972 @ 10302m 1d 17h 52m
16 Jun 1972 @ 16382m 5m
16 Jun 1972 @ 16332m 2d 5h 12m
14 Jun 1972 @ 11211m 30s 6m
14 Jun 1972 @ 11151m 50s 10m
14 Jun 1972 @ 1105 A2d 9h 5m
12 Jun 1972 @ 0200 A2d 10h 18m
09 Jun 1972 @ 15422m 5s 8m
09 Jun 1972 @ 15342m 17m
09 Jun 1972 @ 15172d 16h 22m
06 Jun 1972 @ 22558m
06 Jun 1972 @ 22475m
06 Jun 1972 @ 22422d 1h 30m
04 Jun 1972 @ 21126m
04 Jun 1972 @ 2106276d 23h 6m
01 Sep 1971 @ 2200 A3h 5m
01 Sep 1971 @ 18556d 9h 55m
26 Aug 1971 @ 0900 A7y 12d 40m
15 Aug 1964 @ 072014d 0m
01 Aug 1964 @ 07207d 19h 26m

Interval Statistics

Interval Count100
Min2m
Max7y 12d 40m
Mean146d 19h 26m
Median4d 21h 14m

Latest Notes

Note IDStart Time (US/Mountain)End Time (US/Mountain)EntrantNote
8760 18 Jun 2018 @ 1007 --- JSJ Moderately forceful steaming.
10890 28 Sep 1993 @ 0800 --- research-mab 9/28/1993 {generic time} More on Guardian Geyser. It used to have a beehive shaped cone. Since it flipped its lid there is a visible vent and a dark red cap, which is the peeled back top of the cone
10889 27 Sep 1993 @ 0800 --- research-mab 9/27/1993 {generic time} Guardian Geyser has blown off the north half of its cone
10888 23 Sep 1993 @ 1611 --- research-mab 9/23/1993 Guardian steam phase 1611
5370 24 Jun 1989 @ 1800 --- research-mab 6/24/1989 Roved past Guardian Valentine. Guardian was having 1-2’ bursts Valentin had a wet outflow. Scott & Carolyn set up sticks to check for future eruptions.
7633 25 May 1984 @ 1800 --- research-mab 5-25-84 Cistern Guardian Geyser is a continuous spouter, has been for at least a year. What is noteworthy is its bronz[e] colored metallic sulfide deposit lining which extends out to the vents upper rim & is estimated to be at least a centimeter thick.
7613 11 Feb 1984 @ 1800 --- research-mab 02/11/1984 Guardian Geyser Continuous strong fumarole.
4598 21 Aug 1980 @ 0000 --- research-mab Aug 21 1980 It looks like Guardian geyser is acting up. Our VIP saw 6’ bursts of water coming out of the crack. I saw water 10” above the crack.
6008 06 Jun 1973 @ 0810 --- research-mab 06/06/1973 Valentine in strong steam phase, but water cold in runoff channel. Guardian steaming profusely 0810
6009 06 Jun 1973 @ 0800 --- research-mab 06/08/1973 {no time- probably morning} Guardian marker replace (2 ½ month interval?)
6043 25 May 1973 @ 1800 --- research-mab 05/25/1973 Guardian seemed to be steaming more than I recalled .{no time}
6003 17 May 1973 @ 1800 --- research-mab 05/17/1973 Guardian {marker} in place.
5996 04 May 1973 @ 2000 --- research-mab 05/04/1973 Ledge Valentine Ebony markers all replaced 8pm Guardian still has not budged.
5980 30 Apr 1973 @ 1800 --- research-mab 04/30/1973 Guardian Geyser -= Normally associated with Valentine, there has been no eruption at all this month or since at least March 28th.
5993 27 Apr 1973 @ 0800 --- research-mab 04/27/1973 (markers) only Guardian which has been inactive since March 28 was still in place.
5944 31 Mar 1973 @ 1800 --- research-mab 03/31/1973 from Valentine Summary ~ Guardian Geyser, which only plays immediately before or after an eruption of Valentine, was irregular, playing 11 out of the 20 possible times.
5951 29 Mar 1973 @ 0945 --- research-mab 03/29/1973 with Valentine Guardian did not play
5950 22 Mar 1973 @ 1545 --- research-mab 03/22/1973 with Valentine Guardian did not play
5948 21 Mar 1973 @ 2030 --- research-mab 03/21/1973 with Valentine Guardian did not play
5949 21 Mar 1973 @ 1545 --- research-mab 03/21/1973 with Valentine Guardian did not play
5947 16 Mar 1973 @ 0800 --- research-mab 03/10/1973 with Valentine Guardian did not play {Valentine stated as "night" in summary}
5946 10 Mar 1973 @ 1204 --- research-mab 03/10/1973 with Valentine Guardian did not play
6423 19 Aug 1972 @ 1800 --- research-mab 08/19/1972 Guardian Geyser – marker still in place – it has missed playing for the last 6 eruptions of Valentine Geyser.
6391 13 Aug 1972 @ 1800 --- research-mab 08/13/1972 Guardian G did not erupted in conjunction with Valentine its markers are still in place. Pinwheel down again very little water draining in, no runoff. {no time noted}
6377 31 Jul 1972 @ 1108 --- research-mab 07/31/1972 Guardian each time for 2 min- there was at least one eruption before these two
6352 11 Jul 1972 @ 2337 --- research-mab 07/11/1972 Guardian recycled at 1137 pm
6342 18 Jun 1972 @ 1015 18 Jun 1972 @ 1035 research-mab 06/18/1972 Guardian Geyser played 3 times; the first one was not seen but it washed away the marker & was apparently very near the time of the beginning of the eruption of Valentine. The second was at 10:30 for 2 minutes, the third at 1035 for 2m15s, the earlier one was again approximately twice as powerful as the last.
6539 02 Sep 1971 @ 1800 --- research-mab 09/02/1971 Guardian Geyser below Valentine appear to have a lot more vigor and activity: the opening to the “main vent” is larger and there is a considerable washing and erosion of the altered rhyolite ridge to the south of it.
6557 15 Jul 1971 @ 0800 --- research-mab 07/15/1971 Valentine Geyser & Guardian Geyser played sometime during the night. There is an increase in steam activity all around the Valentine, especially at Black Growler.
No attachments for this geyser.
Baseline does not exist.


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