The historic tornadoes of April 2011
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The historic tornadoes of April 2011

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  • Corporate Authors:
    United States, National Weather Service,
  • NOAA Program & Office:
    NWS (National Weather Service)
  • Description:
    "On April 27, 2011, a series of devastating tornadoes struck the southeastern United States. This tornado event was one of the deadliest in the country since systematic tornado record keeping began in 1950. With 316 fatalities (31 in Mississippi, 234 in Alabama, 32 in Tennessee, 15 in Georgia, and 4 in Virginia), it ranks with the 1974 Super Tornado Outbreak and resulted in more deaths than the 1965 Palm Sunday Outbreak. In addition, there were more than 2,400 injuries. Damages from this outbreak totaled over $4.2 billion. The National Weather Service (NWS) formed a Service Assessment Team to evaluate its performance. To strengthen NWS relationships with other federal agencies involved with disaster work, for the first time this assessment had a co-leader from the Federal Emergency Management Agency. The team interviewed staff and reviewed products from the Storm Prediction Center (SPC), Weather Forecast Offices at Memphis and Morristown, TN, Jackson, MS, Huntsville and Birmingham, AL, and Peachtree City, GA. The team gathered feedback from partners and users of NWS products including media outlets, Emergency Managers at the state and local level, first responders, and the public. One of the team's tasks was to assess societal impacts of this event. This tornado outbreak was anticipated and forecast days in advance. The SPC began focusing on the affected area in its convective outlook products 5 days prior to the event. It continued emphasizing, refining, and enhancing the threat leading up to the event, ultimately issuing a high risk convective outlook on the morning of April 27 for a large portion of the impacted area. The Weather Forecast Offices (WFO) in the affected area prepared for severe weather operations and indicated the risk of severe weather and tornadoes as much as 5 days in advance. Hazardous Weather Outlooks, Web images, pre-recorded multimedia briefings, and webinars discussed the potential impacts. Emergency Managers and media staff interviewed indicated they were well prepared for the severe weather that occurred."--Page 1.
  • Content Notes:
    "December 2011."

    System requirements: Adobe Acrobat Reader.

  • Keywords:
  • Series:
    Service assessment
  • Document Type:
    Service Assessment
  • Place as Subject:
    Southern States
  • Name as Subject:
  • Rights Information:
    Public Domain
  • Compliance:
    Library
  • Main Document Checksum:
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