hydrol1 2018-04-16 16:06:17

Baboy 2018-03-01 22:16:50

THIS TOPIC IS VERY HARD YOU KNOW??? ITS FREAKING DEADLY AND WE CANT UNDERSTAND THE TOPICS!!!!!!!!!!!!!!!!!!!!!!! GOOD BYE. I ALREADY GOT MY CERTIFICATE !!!!!!!!!!!!!! NEXT TIME CHANCE THE CHOICES. ITS EASY TO CHEAT.............

george.fan 2018-02-15 03:10:17

I found the quiz to not entirely match up with the content of the course.

keabeiningen 2017-12-29 11:48:50

I liked the examples that were given in real events. This makes the lesson more interesting.

madhat1991 2017-11-14 00:25:42

good

srkalaf 2017-08-04 05:26:26

Great tutorial and well presented

Thieb 2016-11-28 15:46:33

Interesting discussion from a variety of locations.

hydrovorobey 2016-10-26 06:22:40

nice comparison and examples

nispo 2013-01-14 23:00:18

This module provides more of a glimpse into a flash flood case instead of a full blow case study. It did a good job of setting up the different scenarios in which flash flooding occurs, and how it can often be hard to predict. Radar blocking and underestimated rainfall rates(from warm rain processes) are especially interesting topics. However, in some of the cases I was hoping for a little more thorough analysis.

1. Understand the hydrologic response to intense rainfall that leads to rapid runoff and flash floods. 2. Recognize the utility and limitations in NWS flash flood forecasting tools (FFMP, FFG, Radar QPE). 3. Understand that flash flood prone basins can be very small. 4. Identify the LEC (Low Echo Centroid) storm signature and realize its implications on rainfall production. 5. Understand the utility and limitations of different Z-R relationships. 6. Recognize the information provided by FFMP's (Flash Flood Monitoring and Prediction) upstream/downstream tool. 7. Recall how and why FFMP basin rainfall can mask radar problems such as terrain blocking. 8. Think about how one may use other data in areas with terrain blocking of the radar beam. 9. Understand the impact that fire may have on basin hydrology. 10. Recall how debris flows can occur with flash floods. 11. Understand how changing the FFG values may be appropriate in some situations. 12. Recognize the important information provided by FFMP's difference and ratio fields. 13. Be aware of important collaborative efforts between the NWS and other agencies, such as the USGS. 14. Understand the dramatic impact that urban and suburban development can have on basin response. 15. Understand how and why FFG may need to be altered in urbanized areas. 16. Anticipate the very short time lag between peak rainfall and peak flooding in urbanized areas. 17. Recognize that flash flooding may occur downstream of basins that receive the greatest rainfall. 18. Recognize the potential of flash flooding from the sudden release of water impounded by human engineered structures. 19. Recognize the importance of interagency communication prior to and during flash flood events, especially those that involve structural failures.

hydrology, hydrologic cycle, runoff, flash flood, flash flood prediction, flood frequency, Flash Flood Guidance (FFG), Quantitative Precipitation Estimation (QPE), Flash Flood Monitoring and Prediction (FFMP), Low Echo Centroid (LEC), catchment, drainage, frontogenesis, theta-e, radar reflectivity, satellite, Z-R coefficients, warm-rain process, basin, sounding, downstream, upstream, precipitation efficiency, rainbands, debris flow, slope failure, beam blocking, multi-sensor rainfall, FFMP difference field, FFMP ratio field, FFMP basins, orographic lift, burn area, burn severity, radar coverage, rainfall threshold, time since burn, urbanization, cubic feet per second (cfs), cubic meter per second (cms), basin response, infiltration, culverts, storm sewer, road grid, dry wash, impounded water, structural failure, radar overshooting