National Weather Service: Hurricane Season
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National Weather Service: Hurricane Season Our Nation’s Weather Sentry…Always There, Always on Guard
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National Weather Service: Hurricane Season
- 1. National Weather Service Our Nation’s Weather Sentry… …Always There, Always on Guard Chris Strong National Weather Service Baltimore/Washington Forecast Office
- 2. National Weather Service Baltimore MD/Washington DC Hurricane Season June 1 – November 30
- 3. National Weather Service Baltimore MD/Washington DC Threats • Hurricane or Remnant, threats are same…
- 4. National Weather Service Baltimore MD/Washington DC Threats • Hurricane or Remnant, threats are same… • Flooding from Torrential Rain
- 5. National Weather Service Baltimore MD/Washington DC Threats • Hurricane or Remnant, threats are same… • Flooding from Torrential Rain • Tidal Flooding from Surge
- 6. National Weather Service Baltimore MD/Washington DC Threats • Hurricane or Remnant, threats are same… • Flooding from Torrential Rain • Tidal Flooding from Surge • Tornados
- 7. National Weather Service Baltimore MD/Washington DC Threats • Hurricane or Remnant, threats are same… • Flooding from Torrential Rain • Tidal Flooding from Surge • Tornados • Winds
- 8. National Weather Service Baltimore MD/Washington DC Threats • Flooding from Torrential Rain Probably the most underrated threat, yet often biggest issue. 1-2 FEET of rain can fall. (An average rainstorm is <1”)
- 9. National Weather Service Baltimore MD/Washington DC Threats • Flooding from Torrential Rain The biggest inland killer Often from: – Driving into flooded areas – Kids playing w/ swollen streams
- 10. National Weather Service Des Moines, IA National Weather Service Des Moines, IA National Weather Service Des Moines, IA Flooding
- 11. National Weather Service Baltimore MD/Washington DC Lee Remnants ‘11
- 12. National Weather Service Baltimore MD/Washington DC Threats • Tidal Flooding from Surge The most deadly threat for: * those along tidal shores * watch track W of Fairfax Think of surge like a slow tsunami
- 13. National Weather Service Baltimore MD/Washington DC Threats • Tornados Many do not realize it, but hurricanes can produce tornado outbreaks upon landfall. Affects targeted areas.
- 14. National Weather Service Des Moines, IA National Weather Service Des Moines, IA National Weather Service Des Moines, IA Tornadoes Remnants of Ivan produced the worst Mid Atlantic tornado outbreak (35 tornadoes) in recent history (Sept 17, 2004). •Tornado production can occur for days after landfall •Any time of day/night
- 15. National Weather Service Baltimore MD/Washington DC Threats • Winds Typically one of the biggest threats near the landfall region The main threat for mariners. Wind speeds usually decrease dramatically after landfall. Can have wind gusts above 200 mph.
- 16. National Weather Service Des Moines, IA National Weather Service Des Moines, IA National Weather Service Des Moines, IA
- 17. National Weather Service Baltimore MD/Washington DC 4 Threats • Hurricane or Remnant, threats are same… • Flooding from Torrential Rain • Tidal Flooding from Surge • Tornados • Winds Which one(s) will impact you & how bad ? Depends on: * storm’s “personality” * your particular area!
- 18. National Weather Service Baltimore MD/Washington DC 4 Threats • Sandy (2012) • 3) Flooding from Torrential Rain • 1) Tidal Flooding from Surge • Tornados • 2) Winds Which one(s) will impact you & how bad ? Depends on: * storm’s “personality” * your particular area!
- 19. Sandy • Sandy NWS Forecast
- 24. Sandy’s Impacts Deaths • 77 Deaths (Direct and Indirect) • ~ 2/3 Due to Surge & 1/3 Due to Winds
- 25. Sandy’s Impacts Evacuation Orders • More than 1 Million Evacuation Orders Implemented • Decisions for Evacuation are ALL TIED to Hurricane Category (Wind Speed) in Emergency Preparedness Plans
- 26. Sandy’s Impacts Power Outages • More than 3 Million Widespread Power Outages that Lasted at Least 2 Weeks • Tri-State Area served by at Least 10 Different Utility Companies
- 27. Sandy’s Impacts Property Damage • Cost Estimates Provided by the Governors for the States of NY, NJ, and CT - New York $42 Billion - New Jersey $29.4 Billion - Connecticut $360 Million
- 28. • Main Impacts – Wind Damage (Trees and Power lines; some structural damage due to fallen trees) – Coastal Inundation caused widespread and significant property damage; NYC/NJ Metro Area Hardest Hit (including Long Island and CT) Sandy’s Impacts Wind and Surge
- 29. National Weather Service Baltimore MD/Washington DC SO…. • Have plans… – Not just for the 1 in 10 year storm, – But the 1 in 100 year storm too! • For each of the 4 threats Thank you! Chris Strong National Weather Service christopher.strong@noaa.gov
- 30. Weather-Ready Nation Weather Disasters will come… If everyone… …gets advance notice …knows what to do & acts …is prepared …we will truly be a Weather-Ready Nation! NOAA National Weather Service