National Weather Service Marine Web Portal
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National Weather Service Marine Web Portal

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Checking the weather before you depart on a boating trip is critical to help ensure a safe journey. In this session, a National Weather Service Meteorologist walks you through the new NWS Marine ...

Checking the weather before you depart on a boating trip is critical to help ensure a safe journey. In this session, a National Weather Service Meteorologist walks you through the new NWS Marine Weather Portal and shows you how to obtain site specific forecasts, marine weather observations, seawater temperatures, radar and satellite images and any hazards that may threaten the area.

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National Weather Service Marine Web Portal Presentation Transcript

  • 1. Check the forecast on the New NWS Marine Web Portal John Metz National Weather Service Corpus Christi 10/20/09 Is it safe to go out?
  • 2. The Organization The Commerce Department NOAA NWS
  • 3. National Weather Service 122 Weather Forecast Offices 13 River Forecast Centers
  • 4. National Weather Service Aviation Center Storm Prediction Hurricane Center NASA Weather Modeling Centers Climate Prediction National Archive Space Weather National Centers Tsunami Center
  • 5. Marine Forecast Offices
    • 47 Coastal Weather Forecast Offices
  • 6. WFO Corpus Christi Responsible for 15 counties and the Gulf of Mexico out 60 nm
  • 7. National Weather Service Mission :
  • 8. Local Staff
    • Meteorologist in Charge
    • Assistant System Administrator
    • Warning Coordination Meteorologist
    • Science and Operations Officer
    • Information Technology Officer
    • 5 Senior Forecasters
    • 5 Journeyman Forecasters
    • 3 Hydro Meteorological Technicians
    • 1 Meteorologist Intern
    • 3 Electronics Technicians
  • 9. NWS Responsibilities
    • Collect Weather Data
    • 7 Day Public Forecasts
    • 5 Day Marine Forecasts
    • Severe Weather Watches & Warnings
    • Hurricane Watches & Warnings
    • Aviation Forecasts
    • River Flood Forecasts
    • Fire Weather Forecasts
    • Climate Reports
  • 10. Mariners are vulnerable to adverse weather
    • Strong winds cause rough seas & bays which are dangerous to small craft.
    • Wind shifts from storms & fronts can turn calm waters into turmoil in minutes.
    10/20/09 L
    • Safe harbor can be miles away. This combined with slow moving vessels, sand bars and reefs mean that safe harbor is an hour or more away.
  • 11. Coast Guard Stats
    • On average >6000 marine accidents annually.
    • 4000 injuries per year
    • 700 fatalities per year
    • 20% of fatalities directly caused by hazardous waters or weather.
    10/20/09
  • 12. Thunderstorms 10/20/09 Threat of high Wind, Lightning, Heavy Rain, Hail, Waterspouts
  • 13. Lightning
    • On average 82 deaths per year directly due to lightning strikes and 200 non fatal.
    • Don’t be caught in an open cabined vessel!
    10/20/09
  • 14. Shelf Clouds 10/20/09 Indicate approaching front, thunderstorms & wind shifts
  • 15. Downburst Life Cycle Initial Stage - begins when downburst starts to descend from the cloud base
  • 16. Impact Stage – time of the strongest surface winds and greatest danger to aviation Downburst Life Cycle
  • 17. May also appear as a Rain foot Downburst Life Cycle
  • 18. Downburst Winds Leading Edge of downburst
  • 19. 10/20/09 Fast Approaching Danger!
  • 20. Fast Moving Shelf Cloud Indicates an approaching wind shift with speeds >50kts
  • 21. 10/20/09 Waterspouts Can produce wind speeds of 40 to 90 knots
  • 22. 10/20/09 Dense Sea Fog Visibilities less than 2 nautical miles is dangerous
  • 23. Advisories and Warnings
    • SCEC - Small Craft Should Exercise Caution (Winds 15-20kts)
    • SCA - Small Craft Advisory (Wind > 20kts for 2 hrs and/or seas > 7 feet)
    • Gale - Gale Warning (Wind > 34 Knots)
    10/20/09 Non Convective Predominant Wind conditions expected over open water
  • 24. Marine Statements & Warnings
    • Marine Weather Statements
      • Strong cold fronts, Thunderstorms with ~30 knot winds, small hail or unusually heavy rainfall or excessive lightning, Sea Fog.
    • Special Marine Warnings
      • Thunderstorms with winds > 34 knots, 3/4 inch hail or waterspouts.
    10/20/09 Convective
  • 25. Accessing Forecasts & Warnings?
    • VHF Marine Radio Ch 16
    • NOAA Weather Radio
    • PDA’s & Cell
    • Television
    • Phone
    • Internet
    10/20/09
  • 26.
    • Websites
    10/20/09
    • www.weather.gov
    • forecast.weather.gov/mwp
    • www.hurricanes.gov
  • 27.
    • Websites
    10/20/09
    • www.weather.gov
    • forecast.weather.gov/mwp
    • www.hurricanes.gov
  • 28. Current Conditions 10/20/09 NDBC Buoys
  • 29. Current Doppler Radar 10/20/09 NWS Doppler Radar Network
  • 30. 10/20/09 Watch/Warning/Advisory Map
  • 31. Gridded Significant Wave Heights
  • 32. Gridded Wind Forecasts
  • 33. Gridded Precipitation Chances
  • 34. Gridded Precipitation Chances
  • 35. High Seas Forecast 10/20/09 Tropical Prediction Center Miami, FL
  • 36. 10/20/09 Internet forecast.weather.gov/mwp/
  • 37. 10/20/09 Internet forecast.weather.gov/mwp/
  • 38. 10/20/09 Internet forecast.weather.gov/mwp/
  • 39. 10/20/09 Internet forecast.weather.gov/mwp/
  • 40. 10/20/09 Internet forecast.weather.gov/mwp/
  • 41. 10/20/09 Internet forecast.weather.gov/mwp/
  • 42. 10/20/09 Internet forecast.weather.gov/mwp/
  • 43. 10/20/09 Internet forecast.weather.gov/mwp/
  • 44. 10/20/09 Internet forecast.weather.gov/mwp/
  • 45. 10/20/09 Internet forecast.weather.gov/mwp/
  • 46. Internet 10/20/09 www.srh.noaa.gov/crp Watches Warnings and Advisories
    • Additional Background Maps
    • And Map Label Options
      • Defaults to Hazards
  • 47. Internet 10/20/09 www.srh.noaa.gov/crp
  • 48. Internet 10/20/09 www.srh.noaa.gov/crp Current Observations Tide Data where Available Clickable Observation Points Click element for trends Link to Ob site
  • 49. Internet 10/20/09 www.srh.noaa.gov/crp
  • 50. Internet 10/20/09 www.srh.noaa.gov/crp
  • 51. Internet 10/20/09 www.srh.noaa.gov/crp Interactive Forecast Map
  • 52. Internet 10/20/09 Marine Point and Click Forecast at a Glance Nearby Obs Radar and Satellite Links Full Point Forecast Selected Point – Interactive Map
  • 53. Internet 10/20/09 Marine Zone Forecast Synopsis Nearby Obs Radar and Satellite Links Full Zone Forecast Selected Zone – Interactive Map
  • 54. Additional Useful Links 10/20/09 Zone Forecast Link Forecast Discussion Tide Link Hourly Weather Graph
  • 55. Hourly Weather Graph 10/20/09
  • 56. Additional Useful Links 10/20/09 Tabular Forecast
  • 57. Tabular Forecast 10/20/09
  • 58. Changes to Marine Page Coming Soon!
    • New Google map on marine page
    • Improvements in navigation
      • Mouse over for current obs
      • Removing forecast tab – all on one page
    • Improvements to trend graphics
    • New look - more intuitive
    10/20/09
  • 59. The End… Lets Go Boat’n!
    • Questions?
    10/20/09 www.weather.gov/corpuschristi [email_address]
  • 60. Knots to MPH
    • 1 knot = 1.15 mph
    • So…
      • 15 knots = 17 mph
      • 20 knots = 23 mph
      • 34 knots = 39 mph
    10/20/09