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PACIFIC WINTER STORM CAUSES FLOODING AND LANDSLIDES IN OREGON AND WASHINGTON

PACIFIC WINTER STORM CAUSES FLOODING AND LANDSLIDES IN OREGON AND WASHINGTON. A LOCAL CHALLENGE BECAUSE OF MOUNT HOOD, BUT NOT A DISASTER JANUARY 16-18, 2011. Walter Hays, Global Alliance for Disaster Reduction, University of North Carolina, USA. LOCATION MAP (NOTE: PORTLAND AT LEFT CENTER) .

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PACIFIC WINTER STORM CAUSES FLOODING AND LANDSLIDES IN OREGON AND WASHINGTON

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  1. PACIFIC WINTER STORM CAUSES FLOODING AND LANDSLIDES IN OREGON AND WASHINGTON A LOCAL CHALLENGE BECAUSE OF MOUNT HOOD, BUT NOT A DISASTER JANUARY 16-18, 2011 Walter Hays, Global Alliance for Disaster Reduction, University of North Carolina, USA

  2. LOCATION MAP (NOTE: PORTLAND AT LEFT CENTER)

  3. A Pacific storm that swept through the Northwest USA brought heavy rain to Oregon and Washington, causing multiple landslides and shutting down important roads that facilitate travel cross the region..

  4. MOUNT HOOD

  5. MOUNT HOOD: PART OF THE SITUATION Mount Hood, a stratovolcano in northern Oregon that is located about 50 miles (80 km) east-southeast of Portland, was snow bound..

  6. 6 to 10 inches (15 - 25 cm) of rain that fell in 24 hours in the Sandy River drainage basin accelerated the melting and subsequent runoff of 2 inches (5 cm) of snow on the flanks of Mount Hood and triggered landslides..

  7. The runoff from heavy rain and snowmelt on Mount Hood combined to swell a river that washed out a road near Mount Hood, forcing residents to flee their neighborhoods on foot..

  8. OREGON: SANDY RIVER ON RAMPAGE

  9. SANDY RIVER ON RAMPAGE

  10. OREGON: LANDSLIDE BLOCKS ROAD

  11. OREGON: LANDSLIDE

  12. OREGON: LANDSLIDE

  13. OREGON: LANDSLIDE

  14. OREGON: LANDSLIDE

  15. OREGON: WALK OUT EVACUATION

  16. WASHINGTON: FLOODING OF ROAD

  17. WASHINGTON: LANDSLIDE BLOCKS ROAD

  18. IMPACT ON RESIDENTS Residents that could not or did not evacuate were temporarily isolated as a result of the heavy rains, rising waters, landslides, and loss of use of the roads.

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