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Short-term operational prediction of flash floods is different from that of large river floods in several aspects (Table 1). Notably, short lead times for forecast, warning and response make operational flash flood prediction challenging, while they also make it a hydrometeorological problem (rather than a purely hydrological prediction problem).
Most of the rain will be beneficial amounts, but heavier and persistent showers could trigger flash flooding. NOAA’s Weather Prediction Center has posted a Level 2 out of 4 flash flood risk for ...
Because of the expected rain, "considerable" flash and urban flooding is forecast across portions of Florida, the Southeast, southern Appalachians and the Tennessee Valley through Friday ...
Flood forecasting is an important component of flood warning, where the distinction between the two is that the outcome of flood forecasting is a set of forecast time-profiles of channel flows or river levels at various locations, while "flood warning" is the task of making use of these forecasts to tell decisions on warnings of floods.
In addition, some NWS Weather Forecast Offices have instituted an enhanced flash flood warning, referred to as a flash flood emergency (or as termed by the Albany, New York office as a flash flood warning emergency [5]), which indicates a severe flooding situation in densely populated areas, similar to the procedure for declaring a tornado ...
Aside from the risk of flash flooding, which may be focused on a small area, the storm may bring much-needed rain and wildfire relief over a broad area later this weekend to next week.
Francine was forecast to bring heavy rainfall and possible flash flooding to parts of eastern Louisiana, Mississippi, southern Alabama and the western Florida Panhandle through Thursday.
The Flooded Locations And Simulated Hydrographs Project (FLASH) was launched in early 2012 to improve the accuracy and timing of flash flood warnings. FLASH uses forecast models, geographic information, and real-time high-resolution, accurate rainfall observations from the NMQ/Q2 project to produce flash flood forecasts at 1-km/5-min resolution.