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National Weather Service Hydrologic Program in Alaska

National Weather Service Hydrologic Program in Alaska. Larry Rundquist Alaska-Pacific River Forecast Center National Weather Service National Oceanic and Atmospheric Administration http://aprfc.arh.noaa.gov. Mission Statement.

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National Weather Service Hydrologic Program in Alaska

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  1. National Weather ServiceHydrologic Programin Alaska Larry Rundquist Alaska-Pacific River Forecast CenterNational Weather ServiceNational Oceanic and Atmospheric Administrationhttp://aprfc.arh.noaa.gov

  2. Mission Statement National Weather Service (NWS) is a federal agency within National Oceanic and Atmospheric Administration (NOAA), which is part of Department of Commerce (DOC) National Weather Service Mission Statement " The National Weather Service (NWS) provides weather, hydrologic, and climate forecasts and warnings for the United States, its territories, adjacent waters and ocean areas, for the protection of life and property and the enhancement of the national economy. NWS data and products form a national information database and infrastructure which can be used by other governmental agencies, the private sector, the public, and the global community. " In support of this NWS mission, the Alaska-Pacific River Forecast Center (APRFC) produces timely and accurate water forecasts and information using the best available scientific principles to integrate and model water, weather, and climate information. Our highly-motivated, customer-focused staff is dedicated to professionalism, innovation, and fulfilling expectations of our customers and partners.

  3. NWS AR Hydrologic Program

  4. APRFC Responsibilities APRFC is one of 13 RFCs Non-operational support for hydrologic program in NWS Pacific Region

  5. APRFC Staff • 1 Alaska Regional Hydrologist/Hydrologist in Charge • 1 Service Coordination Hydrologist • 1 Development and Operations Hydrologist • 2 Senior Hydrologists • 1 Hydrologists • 1 Senior HAS Forecaster • 2 HAS Forecasters • 1 Hydrologic Technician HAS – Hydrometeorological Analysis and Support

  6. Flooding Sources Flooding due to Excessive Runoff Snowmelt Glacier melt Rainfall Flooding due to Ice Blockage Freeze-up Ice Jams Aufeis (Naled) Breakup Ice Jams Blocked culverts Other Flood Hazards Jokulhlaups (Glacier Dammed Lake Releases) Dam break or Geologic Control Coastal Flooding Tsunami

  7. Automated River Gauges • Operated by USGS, USFWS, BLM, NWS, ADNR and UAF • Components include sensor, data collection platform (DCP), and telemetry (optional) • Telemetry methods include telephone, satellite, and meteorburst Need more gages in Alaska

  8. Manual River Gauges • Most are read by observers for the NWS • Typically read once per day in the morning • Types include wire weight, staff gauge, and slope profile

  9. APRFC Operations Open-Water Season Winter season is used for weather monitoring and development projects

  10. HAS Forecaster Duties • Weather and river self-briefing • Quality control of precipitation data • Prepare HYD Bulletin • Prepare a quantitative precipitation estimate (QPE) map • Review meteorological models • Prepare quantitative precipitation forecast (QPF) products • Recently added temperature and freezing level forecasts • Prepare Hydrometeorological Discussion text product • Prepare Flood Outlook graphical products • Monitor ongoing weather

  11. HAS Precipitation Products Gridded QPE and QPF Products

  12. Hydrologist Duties • Check data ingest and processing • Weather and river self-briefing • Quality control of river stage data • Maintain hydrologic models • Adjust model input & parameters to match observed stages for each modeled segment using run-time mods • Incorporate HAS QPF and forecast temperature values • Prepare river forecast products

  13. Snowpack Simulation

  14. APRFC Main Page http://aprfc.arh.noaa.gov/

  15. Web Hydrograph

  16. Ensemble of Hydrographs

  17. Probability of Flooding Conditional Simulation Historical Simulation

  18. Weekly Maximum Flows

  19. Follow progress of breakup on Alaska Weather on PBS or on web

  20. The End • Please contact us if you have further questions about our operations

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