A spectacular image That I know I won't forget.
BTW Today from 08:41:02 A. M there were
20 seizmic events up until 15:51:32 Ranging in the 2. 5 to 3. 0 range. She may liven up once again but not cataclysmicly tho.
http://www.geophys.washington.edu/SEIS/PNSN/HELENS/mshrec_eqs.html
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And the mighty after satelite view.
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Volcano
Elevation of summit 9,677 feet before; 8,363 feet after; 1,314 feet removed
Volume removed* 0. 67 cubic miles (3. 7 billion cubic yards)
Crater dimensions 1. 2 miles (east-west); 1. 8 miles (north-south); 2,084 feet deep
Crater floor elevation 6,279 feet
Landslide
Area and volume* 23 square miles; 0. 67 cubic miles (3. 7 billion cubic yards)
Depth of deposit Buried 14 miles of North Fork Toutle River Valley to an average depth of 150 feet (max. depth 600 feet)
Velocity 70 to 150 miles per hour
Lateral Blast
Area covered 230 square miles; reached 17 miles northwest of the crater
Volume of deposit* 0. 046 cubic miles (250 million cubic yards)
Depth of deposit From about 3 feet at volcano to less than 1 inch at blast edge
Velocity At least 300 miles per hour
Temperature As high as 660° F (350° C)
Energy released 24 megatons thermal energy (7 by blast, rest through release of heat)
Trees blown down 4 billion board feet of timber (enough to build about 300,000 two-bedroom homes)
Lahars
Velocity About 10 to 25 miles per hour (over 50 miles per hour on steep flanks of volcano)
Damaged 27 bridges, nearly 200 homes
Effects on Cowlitz River Reduced carrying capacity at flood stage at Castle Rock from 76,000 cfs (cubic feet per second) to less than 15,000 cfs
Effects on Columbia River Reduced channel depth from 40 to 14 feet; stranded 31 ships in upstream ports
Eruption Column and Cloud
Height Reached about 80,000 feet in less than 15 minutes
Downwind extent Spread across US in 3 days; circled Earth in 15 days
Volume of ash* 0. 26 cubic miles (1. 4 billion cubic yards)
Ash fall area Detectable amounts of ash covered 22,000 square miles
Ash fall depth 10 inches at 10 miles downwind (ash and pumice); 1 inch at
60 miles downwind; ½ inch at 300 miles downwind
Pyroclastic Flows
Area covered 6 square miles; reached as far as 5 miles north of crater
Volume & depth* 0. 029 cubic miles (155 million cubic yards); multiple flows 3 to 30 feet thick; cumulative depth of deposits reached 120 feet in places
Velocity Estimated at 50 to 80 miles per hour
Temperature At least 1,300° F (700° C)
Fatalities
Human 57
Wildlife Countless non-burrowing wildlife in blast area, including about 7,000 big game animals; about 12 million salmon fingerlings in hatcheries