I know they were occurring in 1987 because after the Sept 12 Giant eruption, Heinrich, Suzanne and I waited for a 'follow-up' eruption of Oblong. They were typically occurring that year from 30 - 90 min after the first Oblong. Paul Strasser _____ From: geysers-bounces at lists.wallawalla.edu [mailto:geysers-bounces at lists.wallawalla.edu] On Behalf Of TSBryan at aol.com Sent: Tuesday, June 07, 2011 9:22 AM To: geysers at lists.wallawalla.edu Subject: Re: [Geysers] geyser report Sunday 6-5-11 Michael's info is right on. Such series did also take place now and then in the early 1990s but, so far as I know, the only know such episode since then (until now, of course) was in 2005, per electronic data reported by Ralph Taylor. The height of those subsequent eruptions could easily exceed 50 feet, rising as they did from a mostly-empty crater. Scott Bryan In a message dated 6/6/2011 7:03:54 P.M. US Mountain Standard Time, goldbeml at ucmail.uc.edu writes: Oblong erupted in series like that in 1988. After the first eruption, it could have a second one about 2.5 hours later. Then it could have a third eruption only a half-hour after the first. Series were infrequent and irregular, but eruptions could be very large. Someone with access to the early issues of the _Sput_, or Transactions I, Phil Landis' summary of thermal activity, might be able to correct the above details. Michael Goldberg Michael.Goldberg at uc.edu -------------- next part -------------- An HTML attachment was scrubbed... URL: </geyser-list/attachments/20110608/a8ab4954/attachment.html>