I will admit that I did make assumptions about the weather. It is always good to challenge assumptions. So I found this: https://www.accuweather.com/en/us/glacier-national-park/59916/november-weather/35433_poi?year=2021. High of 46, low of 21. Now I have to go back and look at the timeframe, but if my memory serves me correct, they were pushing daylight. Whether some people are correct that they were pushing daylight.Also, there is much discussion of weather in this thread. According to Weather Underground historical data, the temperature at 4:55pm in Kalispell, MT (the closest I could find to Lake McDonald) on November 1, 2020 was about 50F and the weather was fair.
I did note this from the original filing:
111. On Sunday, October 25, 2020, the Gull Dive Defendants conducted the first of Linnea’s training dives at Seeley Lake, Montana, at an altitude of 4,019 feet. The temperature at the beginning of the day was -5 degrees Fahrenheit, with a wind chill of -15 degrees Fahrenheit, and the ground was blanketed with snow and ice. The high temperature at Seeley Lake on that day was 18 degrees Fahrenheit.
I have not fact checked it however.
This one just made me cringe:
120. During the dive on October 25, 2020, Snow wore a dry suit, as did student Joel Wilson. Liston, wore a wetsuit, as did Linnea. Due to the extreme cold, Complaint and Demand for Jury Trial 28 student Nathan Dudden elected not to dive and, instead, he gave his wetsuit to Linnea to wear on top of the wetsuit she rented from the Gull Dive Defendants to help Linnea stay warm.
Per point 151, they were to meet at Gull Dive Center, a 3-hour drive to the Lodge at Lake McDonald. An excerpt in an email stated:
Prepare for cold weather. Please bring extra undergarments, extra gloves and hoods if you have them. Nothing worse than putting on wet cold gloves.
I can't speak as to the impact of the mountains to the west causing sunset to be shorter and temperatures to be colder. As a landscape photographer, I have chased many sunsets and learned the hard way that I had to adjust for mountains.
This is an important point:
174. Rather than arrive at the Lake McDonald Lodge at 2:00 p.m. to begin diving, as planned and communicated to the divers days earlier, the dive party did not arrive until closer to 4:00 p.m
175. Sunset in Glacier National Park on November 1, 2020 was at 5:14 p.m., with the sun falling behind the mountains to the west southwest and creating dusk well before that time.
204. The dive started at 5:08 p.m., six minutes before sunset.
The complaint does not cite the temperature at that day/time, probably (my guess) in that it wasn't as extreme as the dive location on October 25 as described in point 111 (copied above).
While I was not there that day obviously, I would guess that the temperatures had dropped from the high of 46. Not an issue going into the water, but it would have been an issue during the interval. Overall, I still think my premise is correct in that temperatures are an issue on average in November at elevation.
@MrVegas thanks for pointing out my assumptions/extrapolation. It made me dig into things more and review the original filing.
Another point is water temperature. Using Lake McDonald's current water temperature is 70°F. Today's forecast is: Clear throughout the day., with a high around 75°F and a low around 51°F. Winds are out of the SE at 5 mph with gusts of 18 mph. the water temperature was between 48.7 and 44.3 degrees.
Now this aspect is completely on the dive center and the instructor. However, I would like to see an apprentice period (based on certification) for new instructors where no mixed courses are allowed and reduced ratios. I know that myself as a new instructor, I wasn't able to handle max ratios, but fortunately I was co-teaching. Actually even now I can't handle max ratios and even in warm, crystal clear water, I can't handle max ratios. While I think I can prepare students against panic and am capable of identifying students with issues, I don't think anyone can guarantee that more than one student may panic at a point in time, and if you are at max ratios, you are going to have a bad day. Yes, this is statistically small where this occurs. But it does happen and can easily be addressed.