Emergency► - NOAA Changing Flood Model

⚠️ Emergency►section 🚩 3rd Qtr • 2025 ⚠️

NOAA Changing Flood Model 1 in 100 year events now happening every 8 years

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Flood ForecastingInformation about severe thunderstorm forecasting, models and methodology, from the NOAA National Severe Storms Laboratory.

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NOAA’s 1-in-100 year flooding can now be expected every 8 years

When '1-In-100-Year' Floods Happen Often, What Should You Call Them?The term "100-year flood" can be confusing and misleading, scientists, local emergency officials and homeowners all agree. Experts say there's a better way to communicate about flood risk.

Record rain in New York City generates 'life-threatening' flooding, overwhelming streets and subways | CNNRecord-setting rain overwhelmed New York City’s sewer system Friday, sending a surge of floodwater coursing through streets and into basements, schools, subways and vehicles throughout the nation’s most populous city.

They’re called ‘100-year floods.’ But they’re likely becoming more frequent, study says.According to the new study, roughly 21% of the country can now expect their “1-in-100 year flood” to happen every 25 years.

The places in the U.S. most at risk for extreme rainfallIn some areas of the country, devastating precipitation is becoming more common as the world grows warmer, according to new data released Monday by the nonprofit First Street Foundation.

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