![]() An Areal Flood Warning is normally issued for. The normally tranquil streams and creeks in your neighborhood or area can become raging torrents if heavy rain falls overhead - or even upstream of your location! Flash Flooding can also occur on city streets and highway underpasses. What is areal flooding Areal flooding is similar to flash flooding but is linked more to gradual rain, not a quick burst of rain. WHERE DOES FLASH FLOODING STRIKE? Flash Flooding is possible everywhere. ![]() Not to be confused with 'aerial' which means of or relating to the air. If people are at their homes or businesses, the water may rise quickly and trap them, or cause damage to the property without them having a chance to protect the property.īrowse to the Advanced Hydrologic Prediction Service (AHPS) to research possible flooding areas, warnings, and gauge readings for local conditions. The word 'areal' refers to an area, which is an expanse of space or a region of land. Their situation may become dangerous if they encounter high, fast-moving water while traveling. The impervious surfaces in the urban areas do not allow water to infiltrate the ground, and the water runs off to the low spots very quickly.įlash Flooding occurs so quickly that people are caught off-guard. An Areal Flood Warning is issued for flooding that occurs more gradually, normally from prolonged and persistent moderate to heavy rainfall. Urban Areas are also prone to flooding in short time-spans and, sometimes, rainfall (from the same storm) over an urban area will cause flooding faster and more-severe than in the suburbs or countryside. The VIIRS, ABI and AHI flood products provide flood areal extent. Dangerous flooding in areas near these creeks and streams, as well as low-lying flood prone areas, develops very quickly and is a significant threat to life and/or property,' according to the NWS. The intensity of the rainfall, the location and distribution of the rainfall, the land use and topography, vegetation types and growth/density, soil type, and soil water-content all determine just how quickly the Flash Flooding may occur, and influence where it may occur. Five different alert levels can be downloaded, based on specific rainfall thresholds, defined. Flood hazards are the most common and destructive of all natural disasters. ![]() Flash Floods can occur due to Dam or Levee Breaks, and/or Mudslides (Debris Flow). Our reactions to those floods help define our humanity. Flooding that begins within 6 hours, and often within 3 hours, of the heavy rainfall (or other cause).įlash Floods can be caused by a number of things, but is most often due to extremely heavy rainfall from thunderstorms.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |