Certain US regions are lightning hotspots. New data from the University of Wisconsin-Madison indicates 36.8 million lightning strikes annually, with Florida most affected.
Study Highlights Thunderstorm Frequencies and Varied Lightning Patterns Across the United States
The study, titled "How Much Lightning Actually Strikes the United States?" published in the Bulletin of the American Meteorological Society, reveals that Florida tops the list of states struck by lightning each year.
Researchers analyzed data between 2017 and 2022 and found that the Miami-Fort Lauderdale area recorded over 120,000 lightning strikes in 2023 alone. This region's frequent thunderstorms result from Florida's location and its peninsula shape, surrounded by water.
Moreoever, meteorologists identified Louisiana with the highest volume of deadly 'cloud-to-ground' lightning strikes, and 'Tornado Alley' experiences substantial lightning activity.
Meteorologist Chris Vagasky stated that, on average, 28 people were killed by lightning annually in the US from 2006 to 2023. Globally, lightning strikes cause injury or death to around 250,000 people each year.
The map revealed dense lightning strikes around the Gulf Coast and Southern Plains, with the Western US experiencing fewer strikes. Atmospheric conditions in the Pacific cause California to rarely see bolts, and Arizona usually encounters lightning during the summer monsoon season.
New England was marked as a safe zone, likely due to salt particles within clouds causing droplets to fall as rain, reducing cloud electrification chances. The researchers analyzed data from the National Lightning Detection Network, uncovering that US averages 23.4 million flashes, translating into 55.5 million strokes or bolts and 36.8 million 'ground strike points' annually.
Prior to this study, lightning strike estimates were inconsistent, impacting safety efforts. Exceptions in lightning patterns were noted in the High Plains and the Western US, which must be considered in lightning protection designs for these regions.
Lightning Study's Broader Implications: Safety and Geological Understanding Insights"
The researchers express a broader aspiration for their study beyond government weather safety, hoping it encourages further exploration of geological and geophysical conditions underlying lightning. Understanding that a single flash may transfer charge to ground in multiple, widely-spaced locations could have applications in safety construction techniques.
The National Interagency Fire Center in Idaho reports that about four million acres of land in the US are annually consumed by wildfires initiated by lightning. The widespread damage poses a threat to lives, homes, the environment, and the nation's economy, leading to approximately one billion dollars in lightning damage claims paid out by insurance agencies each year.
Meteorologist Chris Vagasky highlights the destructive power of lightning, emphasizing that each giant spark of electricity travels through the atmosphere at 200,000 miles per hour. Additionally, he notes that a single bolt of lightning is hotter than the surface of the sun and delivers thousands of times more electricity than a standard power outlet.
Lightning is common near the warm Gulf waters due to favorable conditions: warm, moist air close to the ground and cooler, drier air above. However, lightning can occur wherever these conditions exist, needing a weather event to lift the warm, moist air upward. Cooler Pacific waters reduce thunderstorm likelihood, but occasional storms still contribute to wildfires.
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