{"id":579788,"date":"2010-05-26T16:35:23","date_gmt":"2010-05-26T20:35:23","guid":{"rendered":"http:\/\/climateprogress.org\/?p=25598"},"modified":"2010-05-26T16:35:23","modified_gmt":"2010-05-26T20:35:23","slug":"stunning-noaa-map-of-tennessee%e2%80%99s-1000-year-deluge-15-sites-had-rainfall-exceeding-maximum-associated-with-hurricane-katrina-landfall","status":"publish","type":"post","link":"https:\/\/mereja.media\/index\/579788","title":{"rendered":"Stunning NOAA map of Tennessee\u2019s 1000-year deluge – 15 sites had rainfall exceeding maximum associated with Hurricane Katrina landfall"},"content":{"rendered":"
\n

What is a 100 year flood?<\/a> A 100 year flood is an event that statistically has a 1% chance of occurring in any given year. A 500 year flood has a .2% chance of occurring and a 1000 year flood has a .1% chance of occurring. The map below relates [the] amount of rainfall that fell to the chances of that amount of rain actually occurring.<\/p>\n<\/blockquote>\n

\"Nashville1<\/a><\/p>\n

Climate Progress has been documenting the woefully underreported Tennessee deluge of 2010 aka Nashville\u2019s \u2018Katrina\u2019.<\/a> It was an off-the-charts extreme weather event that human-caused global warming set the table for<\/a> and almost certainly made more intense, as a leading climate scientist explained to me (interview to be posted next week).<\/p>\n

But I didn’t understand just how unprecedented this superstorm was until I saw the above map<\/a> from the Office of Hydrological Development at NOAA\/NWS.\u00a0 I have never seen a map like this before, but then that may be because there simply aren’t many events to rival this one.\u00a0 Look at the red streak, which is the area hit by a greater than 1000-year deluge.\u00a0 And look at how much of western Tennessee was slammed with a greater than 500 year downpour.\u00a0 This is the “high water” of Hell and High Water<\/a>.<\/p>\n

The NWS has more maps that put the deluge in perspective, including how it compared to Hurricane Katrina’s rainfall:<\/p>\n

<\/span><\/p>\n

\"May<\/a><\/p>\n

Here are some amazing factoids:<\/p>\n