Are landslides on the rise?
The search for the three men feared dead in a massive western Colorado landslide last weekend was called off early today, as authorities feared the search could trigger yet another slide.
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#1 May 28, 2014
There could be a possible connection between landslides & AGW. Our Washington state, doesn't seem to have a great increase in yearly rainfall. Western Washington can get anywhere from 30 inches to 200 inches of yearly rain, depending on location. However, Mt. Rainier AND Mt. Baker, both in our state, have been setting world yearly snowfall records within the past 20 years: 1122 inches & 1140 inches. Over the years, our winter precipitation has increased slightly, while our summers are somewhat drier, causing most of our higher forest fire rates.
As for the OSO, Washington landslide killing forty one people, the month had experienced well above average rain. Furthermore, the general rainfall direction may have been unusually driving directly down the Straits of Juan de Fuca, over Whidbey & Camano Islands & directly onto the slopes of the mountain that slide away. Not coincidentally(?), a major landslide occurred on Whidbey Island recently.
The directed rainfall tends to be a multiplying factor, increasing the over average monthly 8 inches of precipitation over the general region, & concentrating on the slope to many feet of rainfall.
Several years ago, I closely followed one mountain slope from radar detected rainfall, when the general rainfall was 15 to 20 inches. That 2 square mile mountain slope in 4 days got 130+ inches of rainfall.
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