Sitka Landslide Response

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Presentation transcript:

Sitka Landslide Response Joel Curtis Warning and Coordination Meteorologist SE Alaska Subarea Committee Meeting March 4, 2016

Part 1 : Science SE Alaska : mudslides & landslides Ecosystem and Geology Threat Intersects Population & Infrastucture

Location Slope Vegetation: trunk & sail Veg: root systems Soil and Rock strata Soil Disturbance “Old Slides”?

Kramer Ave Slide 8/18/15

Getting Slides Started Saturated soil Wind speed and direction versus slope Initiation Mass Acceleration WET DELUGE

Weather Ingredients Rainfall Amount and Rate Snow Melt to add water Strong Winds / Wind Shift Freeze / Thaw cycles 1hr rainfall amounts from 4am-10am from Sitka Airport (right) and Sitka CRN(left)

Prediction Problems in “QPF” Wind is OK Scale Timing

Indian River Basin

Some Tricks Hydrographs Tape : brilliant Recon : “plop” Size-up : water color

Plop! Water COLOR!

Future: Predictable? Site Specific : NO ! Precursors : Yes, under development. Mention : We try. Deployment : Yes!

Part 2 : My Disaster Luck Emotions Finesse Information / Media Community

Part 3 : Incident ICS Tech Specialist 12 -24 hours – Confidence Relationships

Part 4 : My Lessons and the Future You can’t know enough… Be prepared. Skills Pass the torch !