At a glanceSpeed of Onset: The speed ofonset can vary depending on the pace of the stormFrequency of Occurrence:Around 1000 tornadoes touch down per year but are more prevalent during springand summer months (“tornado,” 2013)Duration: “Tornadoes canlast from several *seconds to more than an hour” (Blum et al., 2017)Forewarning: “A severeweather forecaster can… predict severe weather (including tornadoes) a day ortwo in advance” (Blum et al.
, 2017)Geographic Scope: No morethan a couple miles square however flash flooding and extreme wind may alsoaffect the surrounding areaRange of Intensity: EF0-EF5based on different criteria (formerly used was the F0-F5 scale)Impacts· Tornadoes can cause serious injury by loosedebris and may result in death· High wind and accumulating debris can destroyproperty· Flooding and wind which often accompanytornadoes can ruin infrastructure by snapping power lines and trees· Temporary job-loss can happen while businessesrebuild and power gets restored Tornadoes: A Hazard InformationalBrochureBy Chloe Anderson Steps for Preparedness:1. Havea plan to go somewhere safe like a basement, shelter, or a low-lying area (notunder a bridge) and crouch down covering your head and neck2. Createan emergency kit and store it in your safe room, update regularly3. Listento a weather radio station for updates on the approaching tornado4. “Lookfor the following danger signs:· Dark, often greenish sky· Large hail· A large, dark, low-lying cloud· Loud roar, similar to a freight train· Sirens” (“Tornadoes,” n.d.
) Risk· All states are at risk for a tornado· The geographic region where most US tornadoesoccur is “east of the Rocky Mountains with concentrations in the central andsouthern plains, the Gulf Coast and Florida” (“Tornadoes,” n.d.) VulnerabilityThe most vulnerable groups to beaffected by a tornado are those who live near tornado alley. Vehicles and non-sturdystructures such as mobile homes also create vulnerability. Weaker materials andno solid connection to the earth mean that “mobile homes are, in general, mucheasier for a tornado to damage and destroy” (Blum et al., 2017).
Othervulnerable groups include those with mobility hinderances, disabilities, andyoung children. Getting to the safety of a basement or otherwise sturdystructure is not feasible for some. AnalysisTornadoes can range from emergency to disaster depending onits intensity. Many communities have adopted underground power lines whichassists in power-outages after severe weather. Using higher quality buildingmaterials such as concrete can help mitigate the severity of structural damage.In addition, warning systems and education on the topic of tornado safety canreduce deaths.
ReferencesBlum, H.,Branik, M., Brooks, H., Cappella, C., Carbin, G., Crisp, C., … Thompson, R.
(2017, May 1). The Online Tornado FAQ. Retrieved January 25, 2018, fromhttp://www.spc.noaa.gov/faq/tornado/Tornado.
(2013, October 8). Retrieved January 25, 2018, from http://glossary.ametsoc.
Retrieved January 23, 2018, from https://www.ready.gov/tornadoesTornado Risksand Hazards in the Midwest United States. (2007, August).
Retrieved January 28,2018, from https://www.fema.gov/media-library-data/20130726-1619-20490-0806/ra1_tornado_risks_in_midwest_us_final_9_14_07.pdf