Quote:
Originally Posted by Flames in 07
If your thinking about mitigating risk on the main bow and elbow rivers, the more that comes down and melts in april and early may, the less there is to run off in late may in june. but it doesn't really matter that much. Last year there was average snow pack and averagish run off before late June. What really matters is walls of rain were moving from east to west and then stopped on this side of the mountains. All it did was poor for 2 days straight. I remember driving through it on the way to Kananaskis 2 days before the flood and had to reduce speed to about 35km/h because the water couldn't clear off my windshield fast enough. And it did that for 2 days non stop in large parts of the foothills.
So the start of this thread is quite sensationalist to me, except for those affected by small streams generally upstream of what everyone in Calgary is going to be concerned about.
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This post says it all. A wind pattern that pushed moist air east across the mountains during a snowpack melt, orographic lift. It's the same thing Vancouver get's daily from west winds, but is much more accostumed to it.
With possible changing weather patterns it's something to look out for but the media spends way too much time being alarmist about it.