Talk:Lassen Peak

message: I found this on the eruption of Lassen Peak:   
"Phreatic eruptions are frequent precursors of magmatic eruptions on many stratovolcanoes; and one of the most sustained periods of phreatic activity this century occurred on the dacitic dome of Lassen Peak in the Cascade Range. The first 170 explosions between 29 May 1914 and 14 May 1915 were phreatic, expelling steam and fragments shattered from the dome that sometimes rose 3km above the summit. The main explosions occurred at quite regular intervals: 14 June, 18 July, 19 August, 21 September, 22 October… perhaps representing the time required for snowmelt and rainwater to infiltrate the dome and meet the magma. At first, the fragments ejected were not even warm enough to melt the summit snows; and the first hot ash did not emerge until 22 October 1914, showing that magma was approaching the surface. On 14 May 1915, rapid snowmelt caused the last phreatic throat-clearing explosion that opened the vent for the first emission of magma and a change of eruptive style." Scarth, Alwyn. Volcanoes : An Introduction. London, UK: CRC Press, 1994. p 50. 
"In 1650, a debris avalanche occurred on the northern slopes of the Chaos Crags dome on Lassen Peak,  forming the extensive and well named zone of dacitic boulders, scraps and ash, called Chaos Jumbles." Scarth, Alwyn. Volcanoes : An Introduction. London, UK: CRC Press, 1994. p 61. L Hamm 17:16, 21 August 2005 (UTC)
thread_title:  Data on Eruptions 

message: The paragraph 'physical geography' begins "Lassen Peak has the highest known winter snowfall amounts in California. There is an average annual snowfall of 660 in (1,676 cm), and in some years, more than 1,000 in (2,500 cm) of snow falls at its base elevation of 8,250 ft (2,515 m) at Lake Helen."  There seem to be discrepancies and improperly sourced data here.
The NPS reports that Lassen receives on the order of 250" inches of snow, which is corroborated by the CA department of water resources list of snow pack totals from 1930 to the present (see sources just below.)  Note that in the snowpack list, the annual total is *not* the sum of the monthly snowpack numbers; the numbers are cumulative / represent the snow's increasing accumulation during the course of the year (with an occasional flatline of not accumulating steadily into spring, or a lower number come April).
https://www.nps.gov/lavo/learn/nature/snowpack.htm
http://cdec.water.ca.gov/cgi-progs/snowQuery?course_num=47&month=%28All%29&start_date=&end_date=&data_wish=Retrieve+Data
Could this information have been sourced by mistake from another location somewhere else in the Cascades?  I'm aware that more than 1000 inches of snow has fallen in at least one place in Washington state, but that level has never been measured in California to my knowledge.  Also, it's popularly known that the Mammoth area receives the highest amount of snowfall in big winters, and I've never heard of Lassen matching the 500" or 600" inches that has been measured at the former.  Finally, there are certainly other places named Lake Helen or Helen Lake that could be the cause of a mix-up.
It's unclear whether the measurement currently cited in this wikipedia article has a legitimate origin, or whether this was a mistake in wikipedia that has been re-stated elsewhere on the internet.  This article may be an example of such a circular mistake: https://www.sierrasun.com/opinion/weather-window-the-snowiest-spot-in-california-is-lake-helen-near-lassen-volcanic-national-park/
If so, it means that these other sources should not be used as primary sources for this "Lassen Peak" article, because it's possible that they tautologically refer back to the original mistake.
See also:
https://water.ca.gov/Programs/Flood-Management/Flood-Data/Snow-Surveys
https://www.nrcs.usda.gov/wps/portal/nrcs/main/ca/snow/
https://www.facebook.com/LassenNPS/posts/lassen-has-the-highest-snow-level-in-all-of-california-right-now-on-february-28-/1534887173211388/
Edit: There are similar unsourced statements in the article https://en.wikipedia.org/wiki/Lassen_Volcanic_National_Park; also the slightly more narrow claim that Lassen has more snowfall than any other volcano in the cascades - this is very unlikely when comparing to examples in WA state. 
However, there are also sourced statements placing snowfall levels between 150-650 inches in various places on the mountain.  
Xoxua (talk) 22:15, 29 April 2019 (UTC)
thread_title:  Another data discrepancy: snowfall level? 

message: Do we really need such a large picture? -- Spireguy 13:00, 16 October 2007 (UTC)
thread_title:  Large picture 

message: Just a reminder when reverting or undoing non-constructive edits, please chack that the version you are reverting to is good as well. --Burntnickel (talk) 18:27, 4 February 2008 (UTC)
thread_title:  Reverts & Undos 

message: The book Volcanoes in America's National Parks (by R & B Decker; ) states that a person by the name of B.F. Loomis, along with some Congressman, got the National Park established and took many pictures of Lassen during its 1914 eruption. Could anyone with info put it under the section Human History? --Guanlong wucaii 15:49, 15 February 2010 (UTC)
thread_title:  B. F. Loomis 

message: could we possibly have a world map with the volcano pinpointed on it? it would help to give a much better sense of the geography  —Preceding unsigned comment added by 86.159.255.241 (talk) 06:27, 4 October 2010 (UTC)
thread_title:  World Map? 

message: What is the meaning of the statement "The two older craters were buried"? It does not appear in the reference (Eruptions of Lassen Peak, California, 1914 to 1917) that the article cite. Avihu (talk) 07:43, 22 October 2011 (UTC)
thread_title:  Question 

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thread_title:  External links modified 

message: I've heard two different pronunciations for this mountain:   "LASS-ən" and  "LAY-sən".  Considering one or both pronunciations may've been random guesses by people reading from text, I have no idea which of them is considered correct, and this article provides no pronunciation guide. - Gilgamesh (talk) 20:34, 12 December 2022 (UTC)
replies: text: I found the answer.  Unsourced for now, but that was part of the problem to begin with. - Gilgamesh (talk) 17:21, 16 December 2022 (UTC)
replies: text:  --- found source — hike395 (talk) 04:44, 17 December 2022 (UTC)
replies: text: Thank you. - Gilgamesh (talk) 14:41, 17 December 2022 (UTC)
thread_title:  Pronunciation? 

message: How will lassen peak change overtime 2603:8080:B600:492B:AC08:BD:772:56F (talk) 23:44, 23 January 2023 (UTC)
thread_title:  Larsen peak change