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Hurricane Katrina- Traped on Roof due to Storm Surge and Levy Breach Hurricane Katrina - Only thing left after being hit by Category 5 Winds Picture of Hurricane Hurricane Katrina - Only thing left after being hit by Category 5 Winds Desruction left by Category 5 Tornado

Are You Prepared?
Weather-Ready Nation Hurricane Preparedness
Emergency/Disaster Information & Resources

Atlantic Hurricane Season extends from 01 June to 30 November

  • Weather forecasting usually provides advance warning of approaching weather fronts & storms Lnk to the Nation Hurricane Center
  • Hurricane tidal fronts can extend 50 to 75 miles on both sides of storm eye
  • Storms can suddenly change course & are potentially dangerous until eye is over 100 miles away
  • Hurricanes can contain "Tornado" force winds, so attempting to "ride them out" is dangerous
  • Damage or Casualties in Chesapeake Bay coastal regions, adjacent rivers & tributaries are most likely to result from high winds & flooding due to abnormally high tides & runoff from heavy rainfall
  • Major hurricanes impacting our area are usually declared Federal Disaster with FEMA involved in response

Atlantic Hurricanes Disaster Potential Scale:

  • Category I - sustained winds of 74-95 MPH, storm surge 4-5 ft above normal, low-lying coastal roads inundated, minor pier damage, some small craft in exposed anchorages may break moorings, no real damage to building structures, some damage to poorly constructed signs
  • Category II - sustained winds of 96-110 MPH, storm surge of 6-8 ft above normal, coastal roads & low-lying escape routes cutoff by rising water 2 to 4 hrs before arrival of storm center, considerable pier damage, marinas flooded, some trees down, major structural damage to exposed mobile homes, minor but not major structural damage to buildings
  • Category III - sustained winds of 111-130 MPH, storm surge of 9-12 ft above normal, serious coastal flooding cutting off low-lying escape routes 3 to 5 hrs in advance of storm center arrival, mobile homes destroyed, some structural damage to small residential & utility buildings
  • Category IV - sustained winds of 131-155 MPH, storm surge of 13-18 ft above normal, major damage to lower levels of structures due to flooding & battering by storm debris, low-lying inland escape routes inundated 3 to 5 hrs before storm center arrival, extensive roof damage & complete roofing failure on small residences
  • Category V - sustained winds of > 155 MPH can produce a storm surge > 18 ft above normal, downed trees & signs, extensive window & door damage, complete failure of roof structures on residential & industrial buildings, extensive glass failures, some complete building failures, complete destruction of mobile homes

Hurricane Typical Weather Conditions:

75 to 100 miles away

  1. Gentle off shore breezes
  2. Clouds gathering off shore
  3. Possible light rain
  4. Undercutting along coastal shorelines

Less than 50 miles away

  1. Gale & tropical force winds
  2. Cloudy with fast moving rain clouds
  3. Heavy rain, which combined with wind gusts, could be vertical
  4. Thunderstorms & tornadoes are possible
  5. High seas will usually prevent Auxiliary Facilities from operating

Arrived in area

  1. Intense, sustained hurricane force winds
  2. Possible strong & severe thunderstorms
  3. Possible tornadoes
  4. Heavy, sustained rains
  5. Storm surge causing severe & extensive flooding

Moved out of area

  1. Winds & rain slowly diminishing
  2. Flooding conditions subside
  3. There is still a possibility of thunderstorms
  4. Weather eventually returns to normal

Gone from area (eye at least 100 miles away)

  1. Set when storm is no longer a threat & recovery operations can be safely initiated
  2. Post hurricane recovery operations & rebuilding initiated

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