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  2. Intensity-duration-frequency curve - Wikipedia

    en.wikipedia.org/wiki/Intensity-duration...

    An intensity-duration-frequency curve (IDF curve) is a mathematical function that relates the intensity of an event (e.g. rainfall) with its duration and frequency of occurrence. [1] Frequency is the inverse of the probability of occurrence. These curves are commonly used in hydrology for flood forecasting and civil engineering for urban ...

  3. Storm Water Management Model - Wikipedia

    en.wikipedia.org/wiki/Storm_Water_Management_Model

    The simulated model parameters for subcatchments are surface roughness, depression storage, slope, flow path length; for Infiltration: Horton: max/min rates and decay constant; Green-Ampt: hydraulic conductivity, initial moisture deficit and suction head; Curve Number: NRCS (SCS) Curve number; All: time for saturated soil to fully drain; for ...

  4. Helene now projected as Category 4 hurricane, could get ...

    www.aol.com/tropical-storm-helene-become-major...

    The highest landfall probability is somewhere along the eastern part of the Florida Panhandle − possibly the Big Bend area, the curve of Florida's peninsula around the Gulf of Mexico − late ...

  5. Time of concentration - Wikipedia

    en.wikipedia.org/wiki/Time_of_concentration

    Time of concentration is useful in predicting flow rates that would result from hypothetical storms, which are based on statistically derived return periods through IDF curves. [4] [5] For many (often economic) reasons, it is important for engineers and hydrologists to be able to accurately predict the response of a watershed to a given rain event.

  6. Hurricane Helene tracker: Projected path of 'catastrophic ...

    www.aol.com/hurricane-helene-tracker-see...

    Hurricane Helene strengthened into an "extremely dangerous Category 4 hurricane" before making landfall along Florida's Gulf Coast late Thursday night, according to the National Hurricane Center ...

  7. Effects of Hurricane Floyd in Florida - Wikipedia

    en.wikipedia.org/wiki/Effects_of_Hurricane_Floyd...

    The Florida Department of Environmental Protection closed 30 state parks and evacuated hundreds of campers. [10] United States President Bill Clinton also declared a federal state of emergency in Florida in anticipation of the storm's approach. [11] Nearly 1.37 million Florida residents were told to evacuate. [12]

  8. Florida on alert for looming tropical downpours

    www.aol.com/weather/south-florida-alert-looming...

    A new zone that includes waters surrounding Florida will be watched closely by AccuWeather meteorologists for potential tropical development next week. AccuWeather meteorologists are constantly ...

  9. Dvorak technique - Wikipedia

    en.wikipedia.org/wiki/Dvorak_technique

    Common developmental patterns seen during tropical cyclone development, and their Dvorak-assigned intensities. The Dvorak technique (developed between 1969 and 1984 by Vernon Dvorak) is a widely used system to estimate tropical cyclone intensity (which includes tropical depression, tropical storm, and hurricane/typhoon/intense tropical cyclone intensities) based solely on visible and infrared ...