Franklin to stay offshore, but tropical moisture will help deliver mid-week soaking | SaltWire - Hurricane Idalia's arrival on Florida's Gulf Coast due on Wednesday signaled activity in the Atlantic's hurricane alley might not be as quiet this year as meteorologists had once predicted.
This, scientists said, may counteract the moderating influence of the El Nino currently in effect, which typically reduces Atlantic hurricane activity. Climate change can also boost the amount of rainfall delivered by a storm. Because a warmer atmosphere can also hold more moisture, water vapor builds up until clouds break, sending down heavy rain.
NOAA also projects the proportion of hurricanes that reach the most intense levels — Category 4 or 5 — could rise by about 10% this century. To date, less than a fifth of storms have reached this intensity since 1851.The typical"season" for hurricanes is shifting, as climate warming creates conditions conducive to storms in more months of the year. And hurricanes are also making landfall in regions far outside the historic norm.
Hurricane Sandy, though only a Category 1 storm, was the fourth costliest U.S. hurricane on record, causing $81 billion in losses when it hit the Northeastern Seaboard in 2012. The same trend appears to be playing out across the world in Asia's Bay of Bengal, where since 2013 cyclones have been forming earlier than usual - in April and May - ahead of the summer monsoon, according to a November 2021 study in Scientific Reports.
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