Last Known Eruption
1d 52m ago

Latest Eruptions

EruptionDurationInterval
22 Sep 2017 @ 0034 E2h 8m
21 Sep 2017 @ 2226 E2h 8m
21 Sep 2017 @ 2018 E30m
21 Sep 2017 @ 1948 E min44m
21 Sep 2017 @ 1904 E min2h 6m
21 Sep 2017 @ 1658 E3h 30m
21 Sep 2017 @ 1328 E3h 4m
21 Sep 2017 @ 1024 E2h 44m
21 Sep 2017 @ 0740 E2h 46m
21 Sep 2017 @ 0454 E2h 18m
21 Sep 2017 @ 0236 E3h 14m
20 Sep 2017 @ 2322 E54m
20 Sep 2017 @ 2228 E min3h 6m
20 Sep 2017 @ 1922 E3h 38m
20 Sep 2017 @ 1544 E3h 12m
20 Sep 2017 @ 1232 E3h 16m
20 Sep 2017 @ 0916 E1h 48m
20 Sep 2017 @ 0728 E min4h 16m
20 Sep 2017 @ 0312 E1h 12m
20 Sep 2017 @ 0200 E min3h 10m
19 Sep 2017 @ 2250 E2h 56m
19 Sep 2017 @ 1954 E38m
19 Sep 2017 @ 1916 E min2h 36m
19 Sep 2017 @ 1640 E52m
19 Sep 2017 @ 1548 E min3h 18m
19 Sep 2017 @ 1230 E52m
19 Sep 2017 @ 1138 E min2h 48m
19 Sep 2017 @ 0850 E1h 8m
19 Sep 2017 @ 0742 E min3h 6m
19 Sep 2017 @ 0436 E1h 10m
19 Sep 2017 @ 0326 E min2h 46m
19 Sep 2017 @ 0040 E58m
18 Sep 2017 @ 2342 E min2h 36m
18 Sep 2017 @ 2106 E1h 12m
18 Sep 2017 @ 1954 E min3h 4m
18 Sep 2017 @ 1650 E3h 20m
18 Sep 2017 @ 1330 E2h 44m
18 Sep 2017 @ 1046 E3h 26m
18 Sep 2017 @ 0720 E46m
18 Sep 2017 @ 0634 E min2h 52m
18 Sep 2017 @ 0342 E36m
18 Sep 2017 @ 0306 E min2h 52m
18 Sep 2017 @ 0014 E54m
17 Sep 2017 @ 2320 E min2h 38m
17 Sep 2017 @ 2042 E50m
17 Sep 2017 @ 1952 E min2h 36m
17 Sep 2017 @ 1716 E50m
17 Sep 2017 @ 1626 E min2h 42m
17 Sep 2017 @ 1344 E2h 44m
17 Sep 2017 @ 1100 E2h 26m
17 Sep 2017 @ 0834 E44m
17 Sep 2017 @ 0750 E min2h 30m
17 Sep 2017 @ 0520 E56m
17 Sep 2017 @ 0424 E min3h 6m
17 Sep 2017 @ 0118 E2h 50m
16 Sep 2017 @ 2228 E3h 6m
16 Sep 2017 @ 1922 E1h 10m
16 Sep 2017 @ 1812 E min2h 32m
16 Sep 2017 @ 1540 E3h 20m
16 Sep 2017 @ 1220 E4h 22m
16 Sep 2017 @ 0758 E3h 52m
16 Sep 2017 @ 0406 E44m
16 Sep 2017 @ 0322 E min2h 28m
16 Sep 2017 @ 0054 E3h 4m
15 Sep 2017 @ 2150 E1h 12m
15 Sep 2017 @ 2038 E min2h 54m
15 Sep 2017 @ 1744 E3h 28m
15 Sep 2017 @ 1416 E1h 0m
15 Sep 2017 @ 1316 E min3h 18m
15 Sep 2017 @ 0958 E46m
15 Sep 2017 @ 0912 E min2h 28m
15 Sep 2017 @ 0644 E4h 14m
15 Sep 2017 @ 0230 E44m
15 Sep 2017 @ 0146 E min1h 20m
15 Sep 2017 @ 0026 E min3h 46m
14 Sep 2017 @ 2040 E1h 4m
14 Sep 2017 @ 1936 E min2h 22m
14 Sep 2017 @ 1714 E56m
14 Sep 2017 @ 1618 E min3h 14m
14 Sep 2017 @ 1304 E3h 7m
14 Sep 2017 @ 09573m 13s 38m
14 Sep 2017 @ 0919 min2h 23m
14 Sep 2017 @ 0656 E2h 58m
14 Sep 2017 @ 0358 E2h 44m
14 Sep 2017 @ 0114 E3h 10m
13 Sep 2017 @ 2204 E2h 52m
13 Sep 2017 @ 1912 E3h 0m
13 Sep 2017 @ 16122m 43s2h 29m
13 Sep 2017 @ 13432m 53s 1h 8m
13 Sep 2017 @ 1235 min35m
13 Sep 2017 @ 1200 min20s 2h 12m
13 Sep 2017 @ 0948 E52m
13 Sep 2017 @ 0856 E min2h 28m
13 Sep 2017 @ 0628 E36m
13 Sep 2017 @ 0552 E min2h 28m
13 Sep 2017 @ 0324 E2h 44m
13 Sep 2017 @ 0040 E50m
12 Sep 2017 @ 2350 E min2h 36m
12 Sep 2017 @ 2114 E3h 20m
12 Sep 2017 @ 1754 E2h 56m

Interval Statistics

Interval Count100
Min30m
Max4h 22m
Mean2h 15m
Median2h 36m

Latest Notes

Note IDStart TimeEnd TimeEntrantNote
5869 04 Sep 2017 @ 2045 --- novakg No eruption as of 2045. Full pool and no eruption heard while leaving the basin.
4592 31 Jul 2017 @ 1100 --- MAB YVO reset the clock in the Constant logger.
4764 31 Jul 2017 @ 1100 --- MAB 7/31/2017 YVO reset the Constant logger clock around 1100
3824 27 Oct 2016 @ 1345 27 Oct 2016 @ 1555 DanS No eruption, with pool overflowing for 2+ hours. High winds.
3603 05 Sep 2016 @ 1000 --- novakg I arrived at 0847 to a full pool. There was very little in way of activity. About 9:45 there was a bit of convection from Vent 3, but no eruption as of 1000.
2855 19 May 2016 @ 0950 --- MAB Since my last visit on May 13, the Green is gone, clearly visible from the museum. Closer inspection showed good refill action from rooster tail and the little vent on shore, no convection from main vent. YVO confirms one eruption, but the time stamp was so far off last fall I'd hold off on entering E times until we synch up the logger with a seen eruption. Let the games begin!!
2438 29 Sep 2015 @ 0953 --- Tara Overflow.
2359 15 Sep 2015 @ 0945 --- MAB Electronic eruption confirmed - no green in the runoff channel. Observations over the day showed action from the rooster tail vent and the little one on the east bank, but little to no convection from the main vent.
1587 14 May 2015 @ 0940 14 May 2015 @ 1400 MAB Convection in Whirligig looked the best I have seen so far this season. Last eruption March 6, pushing 70 days now.
1519 28 Feb 2015 @ 1442 28 Feb 2015 @ 1510 Kent Pool in overflow at 1442. Too much steam to see any surface disturbances. Good stream of water entering pool from up basin.
1487 02 Nov 2014 @ 0000 02 Nov 2014 @ 2359 MAB Both Constant and Whirligig have lots of water coming into them from above. Both were looking a little 'colloidal blue' in the centers of their craters since the heavy rains in late Sept. enlarged that twin runoff channel from near Pinwheel. 
1437 06 Oct 2014 @ 1740 06 Oct 2014 @ 1840 Jake 1740 to 1840, in overflow with frequent bubbling of the 2nd vent. another vent behind the main vent emitting streams of bubbles that persist to float around the surface
1181 01 Sep 2014 @ 0000 01 Sep 2014 @ 2359 MAB No eruption for 10 hours today, Sept 01. There is a large thermal soil "delta" in the pool similar to that seen in April-May (when Whirligig had been dormant Feb 06-May 23 2014), with water still draining into the geyser from upstream of Pinwheel.  The recent heavy rains may have played a part in this slowdown, and obviously the creation of the delta.  Convection and action from the vents looked better on my evening visit than they did in the morning.  Norris logbook/staff did not see an eruption yesterday, or a drained crater. YVO is currently offline so I offer this information until we know more.  
 
Addendum- this link may or may not work- but here's a photo for the record
https://www.facebook.com/photo.php?fbid=10202981247677529&set=gm.10152387537417399&type=1&theater
 
788 01 May 2013 @ 1159 --- steve At 1159 Whirligig had a rolling boil over the main vent but no splashing, the side vent did give one burst to about a foot and there was heavy overflow. No other action in the next 90 minutes
4730 01 Oct 2000 @ 1800 --- MAB 10/01/2000 Whirligig remained full all day
4710 06 Jul 1990 @ 1800 --- MAB 7/6/1990 Constant, Big Whirligig and Fireball all very active today.
4694 22 Jun 1988 @ 1800 --- MAB 6/22/1988 No eruptions of Big Whirligig noted thus for this summer
4862 18 Aug 1985 @ 1800 --- MAB 8/18/1985 Summary of Whirligig: From watching it on 8/18 & 8/19, etc. It has a near 2 hrs 30 mins interval (near-about). When it erupts – it erupts for about 3 to 4 minutes. The water in the back vent goes up to 4 or 5 feet at an angle in height and occasionally shoots it out 5 to 10 feet. The main vent in the pool center – shoots bursting water to 10 feet sometimes higher with the eruption making a sound like a helicopter/ locomotive. After it erupts it takes 1 ½ to 2 minutes for the pool to drain 2/3 of the way down where it stops & starts to refill again slowly. Then it takes 40 to 50 minutes about for the pool to fill slowly back up to overflowing. Taking 45 to 50 minutes from the start of the eruption- thru the eruption, draining of the pool, refilling of the pool to where it is (the pool) overflowing again. The rest of the time – near 1 hour & 40 minutes about the pool is filled w/water= till the eruption. The intervals between eruptions are near 2 ½ hours long. Big Whirligig and Splutterpot Geysers are directly connected. Both of the above usually go off at about the same time. Splutterpot Geyser then goes off & on real frequent during the time of Big Whirligig’s Eruption, then stops about 20 seconds after Big Whirligig not to erupt again for the next 10 to 12 minutes. Then Splutterpot continues its 5 to 6 minute interval till the next eruption. More on this later.
4858 18 Aug 1985 @ 1330 18 Aug 1985 @ 1350 MAB 8/18/1985 No watching Splutterpot and Whirligig between 1100 to 1145 and 1330 to 1350
4856 18 Aug 1985 @ 1100 18 Aug 1985 @ 1145 MAB 8/18/1985 No watching Splutterpot and Whirligig between 1100 to 1145 and 1330 to 1350
4758 11 Jun 1982 @ 1200 --- MAB 6/11/1982 Naturalist Orientation tour: Big Whirligig overflows, put, put put B. Whirlie – gen 3-10 min when active, interval 30-40 min to 1 hr Little Whirlie - like constant, sometimes every 30 sec, 20 min to 1 hr for series {BRACKET AROUND BOTH, ABOVE: Most years 1 is active, 1 dormant – apparently both dormant this year}
4617 26 Sep 1980 @ 1800 --- MAB 9/26/1980 Little Whirligig Suspect Big and Little W are alternating eruptions.
4605 15 Sep 1980 @ 1000 --- MAB 9/15/1980 Whirligig Geyser – became darker grey as the day progressed. Turbidity, at least in part, was due to run off entering Big Whirligig from Blue Geyser, via Constant. During a Big Whirligig eruption - the water did not clear indicating muddy water was coming from below or, all the water leaving Big Whirligig was that which had flowed into the system from Blue’s run off. I suspect the first case. Temp not ie at 10:14 165ºF, while ie at 1104 - 184ºF
4599 22 Aug 1980 @ 0000 --- MAB 8/22/1980: Activity not observed out of Big Whirligig today. Little W active.
5081 22 Jun 1980 @ 1800 --- MAB 06/22/1980 At the end of the (Little Whirligig) eruption Big Wirligig re-filled, but hasn’t been seen in eruption yet this year.
5131 01 Jun 1980 @ 1800 --- MAB 06/01/1980 Big Whirligig – no evidence of recent eruptions, 144ºF
5070 04 Oct 1979 @ 1800 --- MAB 10/04/1979 Whirligigs very quiet, dual eruptions seem to cause very long intervals.
5068 29 Sep 1979 @ 1800 --- MAB 09/29/1979 Caught the Whirligigs in dual eruption again this afternoon. Big Whirligig was in eruption at 1642. At 1645:45 Little Whirligig joined with a continual splashing eruption. Big, feeling the affects of its competitor, grew in vigor, sending at least one burst 15 feet high. At 16:47:10, the Splutter Pot joined the confusion. Big Whirligig quieted down at 15:52:50 (7:05 in L.W.’s eruption) with only the rooster rail splashing afterwards. When Big quit, Little had a more typical individual bursting pattern. Little Whirligig ended at 16:55:20 for a duration of 9:35. It drained in 1:50. Big Whirligig quickly drained to 2 feet down in the vent. Africa was very quiet during the show, but grew in vigor as soon as Big Whirligig quit. As of 18:00 neither had erupted again.
4987 23 Sep 1979 @ 1105 --- MAB 09/23/1979 Caught the Whirligigs in dual eruptions this morning. First time I’ve seen this occur. Big Whirligig started with a five minute lead, the Little Whirligig joined in at 1057. Little Whirligig was weak in the beginning and continuous. Then became more powerful as Big Whirligig grew to the strongest activity I have seen. Big quit and Little quickly followed suit, the whole show ending at 1102.
4988 22 Sep 1979 @ 1800 --- MAB 09/22/1979 Little & Big Whirligig seem to be alternating eruptions nicely.
5058 12 Aug 1979 @ 1800 --- MAB 08/12/1979 Big Whirligig stopped as Africa became powerful {no log time}
5028 10 Jul 1979 @ 1800 --- MAB NOTE 07/10/1979 The wirligigs [sic] made a lier [sic] out of me today. Big wirligig [sic] erupted for 10 minutes instead of 3-4min. Little wirligig [sic] erupted for 10 minutes. This was shorter than previous times of 16 min. There was a 38 minute wait between Little wirligig’s [sic] eruption compared to last weeks wait of 6 minutes.
5334 24 Jul 1978 @ 1400 --- MAB NOTE 07/24/1978 3:00 pm Walk – 1400 hrs. Geysers seen in eruption during hour: Little Whirligig ~ 1415 first observed since 7/4/78 Big Whirligig 2X Splutter Pot Primrose Sp. Constant 2x Dark cavern many times Africa Fireball Moxie Blue Iris Spring Porcelain Springs
4961 22 Jun 1978 @ 1800 --- MAB 06/22/1978 It seems that when Little Whirligig is active for long periods Big really drains low, similar of course to what happens with Big W is the dominant geyser. So far this summer Big Whirligig has been the dominant geyser. It sill be interesting to see if the roles will switch like they did last summer.
5109 29 Jun 1977 @ 1025 29 Jun 1977 @ 1040 MAB 06/29/1977 Between 1025 and 1040 Little Whirli, Big Whirli and Constant all erupted.
5100 30 May 1977 @ 1800 --- MAB 05/30/1977 The Whirligigs are hard to figure. Sometimes Big Whirligig erupts for a long duration > 10 mins other times for only a couple of minutes. Sometimes there’s a comparatively long interval other times it’s more like like last year. Little Whirligig is similar, I’ve seen it several times a day and other times not at all. Still haven’t found a pattern to their activity.
5210 17 Sep 1976 @ 1800 --- MAB 09/17/1976 Big Whirligig now has longer pauses between eruptions. It erupts for 1-3 minutes, stops for 30 sec – 1 min. Even the “tail” part of the eruption is no longer active between bursts.
5211 15 Sep 1976 @ 1800 --- MAB 09/15/1976 Big Whirly still erupting constantly.
5212 13 Sep 1976 @ 1800 --- MAB 09/13/1976 Big Whirly – apparently still erupting almost constantly
5231 11 Sep 1976 @ 1800 --- MAB 09/11/1976 Big Whirly still going nearly constantly.
5233 10 Sep 1976 @ 1800 --- MAB 09/10/1976 Big Whirly – still goin’ nearly constantly.
5241 07 Sep 1976 @ 1800 --- MAB 09/07/1976 Big Whirly continues to nearly constantly erupt.
5247 03 Sep 1976 @ 1800 --- MAB 09/03/1976 Big Whirly still active 3 min eruption - ½ min quiet – repeat. 162º in pool
5251 01 Sep 1976 @ 1800 --- MAB 09/01/1976 Big Whirly may have been in nearly constant eruption for 24 hrs!
5318 31 Aug 1976 @ 1830 --- MAB 08/31/1976 Big & Little Whirly & Constant are behaving as never before! Big Whirly has been erupting nearly constantly for 1½ hrs (since 1136). There are short pauses between eruptions, but the “tail” keeps going during the pauses. Little Whirly has been erupting along with B.W. It sometimes goes 7-10’ hi, but usually just splashes. Constant was erupting to heights of 50 feet (!!) & on three occasions B.W., L.W. & Constant were all erupting at once. Usually, B.W. would be erupting, Constant would shoot up 4 good bursts & L.W. would drain. Constant has been erupting every 15 min.
5292 31 Aug 1976 @ 1136 31 Aug 1976 @ 1815 MAB 08/31/1976 Big Whirligig had been erupting nearly constantly for 5 hours. (Still erupting 1815)
5864 29 Jun 1976 @ 1800 --- MAB 06/29/1976 {no times noted} Watched new geyser & Pinwheel for 25 min. At beginning of watch, new geyser was erupting about 1’ high & its eroded channel by the boardwalk was dry. Then it began pulsing higher & the channel filled with water. Pinwheel began emitting large bubbles from its vent & splashing as high as 2’ was seen. Big Whirligig began erupting after 5 minutes of this type of play.
5652 22 Aug 1975 @ 1800 --- MAB 08/22/1975 Big Whirligig bubbling in several places not previously noticed, drains more after eruption.
5607 18 Jul 1975 @ 1800 --- MAB 07/18/1975 Big Whirligig is now filling to overflowing before an eruption whereas before it would erupt prior to overflowing. Also there is a distinct pause between each bursts, not noticed before.
5600 05 Jul 1975 @ 1800 --- MAB 07/05/1975 {post quakes} Whirlygig no time on length of eruption but it is more active with much more wash than normal.
5597 30 Jun 1975 @ 1800 --- MAB 06/30/1975 Whirlygig is somewhat changed in color {post quakes}
5590 25 May 1975 @ 1800 --- MAB 05/25/1975 {no time noted} Watched Big Whirligig go through one complete cycle. After erupting and partially draining it begins to fill. As it fills water comes into Little Whirligig until there is a pool about 8’ across. When Big Whirligig starts to erupt the water drains from L.W. Just as B.W. began. Constant gave one half-hearted burst. Will has to see if this pattern is typical or unusual.
5585 18 May 1975 @ 1800 --- MAB 05/18/1975 Whirligigs- Big Whirligig erupts to 10’ every 15-30 minutes when pool fills. Have not yet seen Little Whirligig in action.
5855 20 Sep 1974 @ 1800 --- MAB 09/20/1974 Big Whirligig erupting today
5853 18 Sep 1974 @ 1800 --- MAB 09/18/1974 Big Whirligig would fill – would remain filled 15-20 min. L.W. would then begin erupting – after about 5 min B.W. would drain. L.W. would continue – B.W. was not observed in eruption all day.
5790 26 Aug 1974 @ 1800 --- MAB 08/26/1974 B. W. - eruptions today are much more spectacular than usual.
5750 14 Aug 1974 @ 1800 --- MAB 08/14/1974 Big Whirligig – Became muddier as the day progressed – L.W. was not seen in eruption today (at least in p.m.)
5754 14 Aug 1974 @ 1800 --- MAB 08/14/1974 Big Whirligig water much clearer today
5743 30 Jul 1974 @ 1800 --- MAB 07/30/1974 Whirligigs Water is milky blue, depositing pale gray sediment in LW crater and runoff. Water of Constant is clear.
5737 28 Jul 1974 @ 1800 --- MAB 07/28/1974 BW & LW – Big has been very active today – only one observation of LW – very short eruption; appears that we may be losing Little W.
5723 08 Jul 1974 @ 1800 --- MAB 07/08/1974 Whirligigs = same pattern as last 2 days, except LW seen erupting 1540 – finished 1602 (Big W dry)
5721 07 Jul 1974 @ 1800 --- MAB 07/07/1974 Whirligigs – yesterday’s comments still apply this morning.
5712 18 Jun 1974 @ 2100 18 Jun 1974 @ 2130 MAB 06/18/1974 2100 – Strolled on down this evening for a curiosity visit – L& B quiet. Then @ 2130 Big erupted & has been going at it for 15 min. Little W still quiet.
6195 30 Sep 1973 @ 1630 --- MAB 09/30/1973 Porcelain Basin 4:30 pm Big W marker washed out (both markers)
6186 26 Sep 1973 @ 1500 --- MAB 09/26/1973 Porcelain 3pm Little Whirligig draining frequently 1-2 hr. When Little W. drains, Big fills, but does not erupt, then when Little W. starts again, Big drains.
6171 20 Sep 1973 @ 1800 --- MAB 09/20/1973 Ledge marker still in place 6:00 P.M.! ~~ all others in place incl BW
6173 20 Sep 1973 @ 1800 --- MAB 09/20/1973 Big Whirligig markers still in place in the runoff channel; another marker was placed in the basin area. {no time noted}
6167 19 Sep 1973 @ 1700 --- MAB 09/19/1973 Porcelain Basin 5pm – no change all markers in place including big whirligig!
6152 17 Sep 1973 @ 1745 --- MAB 09/17/1973 All Porcelain Basin markers were in place at 5:45 pm except at Big Whirligig, there the marker placed in the basin was washed away, the marker in Big’s runoff was still in place thought runoff area was damp; it appeared that basin must have filled (not quite as full as before – perhaps a couple of inches short) and run over a bit but not with great force. Marker in basin replaced.
6145 16 Sep 1973 @ 1730 --- MAB 09/16/1973 All Porcelain Basin markers in place at 5:30 pm including Big Whirligig’s ←- 1st day since its rejuvenation 9-6-73, that Big W’s basin has not filled & overflowed during the day.
6222 12 Sep 1973 @ 1745 --- MAB 09/12/1973 1745 Big Whirligig quit erupting
6132 10 Sep 1973 @ 1545 --- MAB 09/10/1973 3:45 Big W draining
6137 10 Sep 1973 @ 1030 --- MAB 09/10/1973 Big W no H20 10:30
6129 09 Sep 1973 @ 1948 --- MAB 09/09/1973 7:48 Big W. drained – Little continued.
6128 09 Sep 1973 @ 1937 --- MAB 09/09/1973 7:37 Big W. began intermittent quiet periods
6126 09 Sep 1973 @ 0956 --- MAB 09/09/1973 9:56 L Whirligig drained, Big W markers gone.
6123 08 Sep 1973 @ 1820 --- MAB 09/08/1973 6:20 Little Whirligig noticed to be drained ~ marker gone from Big W (at least twice Big W has filled perhaps erupted)
6121 08 Sep 1973 @ 1652 --- MAB 09/08/1973 4:52 Little Whirligig drained. Big’s marker gone -runoff into Big filled its vent a bit then it drained somewhat marker replaced
6117 07 Sep 1973 @ 0955 --- MAB 09/07/1973 Both BW + LW stopped 9:55
6115 07 Sep 1973 @ 0945 --- MAB 09/07/1973 Big W drained ~ 9:45
6240 06 Sep 1973 @ 2009 06 Sep 1973 @ 2031 MAB 09/06/1973 8:09-8:31 Big W. fluctuated with eruptive activity then returned to the quiet pool stage for about 15 sec. Then resumed activity, toward the end of the eruption the active periods became shorter (beginning with sev. Min. down to ~15sec.)
6241 06 Sep 1973 @ 2011 --- MAB 09/06/1973 8:11 Big W. increased size of pool and began to overflow; height of eruption went up to at least 10 ft. “Rooster tail” cont. activity except during the quiet pool stage.
6239 06 Sep 1973 @ 2009 --- MAB 09/06/1973 8:09 Big W quieted for 1st time but did not drain.
6237 06 Sep 1973 @ 1845 --- MAB 09/06/1973 6:45 marker placed in runoff channel of Big Whirligig – Little Whirligig still going.
6234 06 Sep 1973 @ 1825 --- MAB 09/06/1973 6:25 Big Whirligig filling
6229 06 Sep 1973 @ 1800 --- MAB 09/06/1973 6:00 big whirligig full (filling in 2min 15s)
6232 06 Sep 1973 @ 1727 --- MAB 09/06/1973 5:27 Big Whirligig drained approx 2:15 sec much sand in vent
6238 06 Sep 1973 @ 1700 --- MAB 09/06/1973 During first observed eruption it was seen that Big Whirligig had previously erupted (wave action pilling up sinter chips around the geyser)
5907 09 Mar 1973 @ 1800 --- MAB 03/09/1973 Filling in (Big) Whirligig before eruption of L.W. is the same as last year.
6590 29 Jun 1970 @ 0830 --- MAB 06/29/1970 0830 Big Whirligig Pool was almost full. Note: this the only mention of Big in this log-year
6946 27 Jul 1965 @ 1800 --- MAB 07/27/1965 Whirligig filled up when L. Whirligig quit. Both Bill & I feel it is filling up much more this year than last. {no specified times}
6768 16 Oct 1964 @ 1800 --- MAB 10/16/1964 Whirligig is completely dry.
6753 09 Oct 1964 @ 1800 --- MAB 10/09/1964 Big Whirligig is bone dry.
6712 05 Oct 1964 @ 1800 --- MAB 10/05/1964 Porcelain Basin observed from 3:30 pm to 4:30 pm Big Whirligig is dry.
6704 04 Oct 1964 @ 1800 --- MAB 10/04/1964 Big Whirligig is dry.
6700 03 Oct 1964 @ 1800 --- MAB 10/03/1964 Big Whirligig is almost dry.
6685 26 Sep 1964 @ 1800 --- MAB 09/26/1964 Whirligig’s water level dropped about a foot. Now about one foot wide. {no time noted}
6683 25 Sep 1964 @ 1800 --- MAB 09/25/1964 Whirligig has about 2 feet of visible water of about 160ºF (the thermometer here is not maximum reading). {no time noted}
6678 14 Sep 1964 @ 1800 --- MAB 09/14/1964 {no time noted} Little Whirligig drained again & stayed dry for 25 minutes. Big Whirligig filled up then drained as LW refilled.
6674 10 Sep 1964 @ 1800 --- MAB 09/10/1964 Little Whirligig – Drained for about an hour – H20 level rose in Whirligig, then when L.W. started playing again the H20 in Big W dropped.{no time noted}
Baseline does not exist.


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