Northeast Oklahoma River/Basin Flooding August 19, 1997

Event Summary  Three-inch rainfall totals were common across Northeast Oklahoma in the days preceding August 19. An upper-level storm system was forecast to move across the area, bringing more rain to already-saturated ground. Forecasters advised people to remain aware of the potential for flash flooding. Although the heavy rainfall did not materialize and only minor flooding was reported, the case serves to highlight the use of forecast guidance in being prepared for flooding.

Objectives  To understand what is meant by the "100-year flood". To estimate how much rain is needed to produce flash flooding. To be able to find site-specific rainfall forecast guidance.

 

Vocabulary  Flash Flood Flash Flood Guidance Forecast Guidance Hydrology Hydrometeorology QPF Return Period

Exercise  Event Data Workshop Version: Event Exercise Self Study Version: Event Exercise Click on "Event Data" for a new window with the information needed for the exercise. Reference Material  Using Flood Forecast Guidance Determining Return Period Flooding Precipitation

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