{"id":13846,"date":"2021-05-17T08:57:28","date_gmt":"2021-05-17T14:57:28","guid":{"rendered":"https:\/\/www.coloradofloodthreat.com\/?p=13846"},"modified":"2021-05-18T09:08:49","modified_gmt":"2021-05-18T15:08:49","slug":"spm-05-17-2021","status":"publish","type":"post","link":"https:\/\/archive-coftb.dewberryanalytics.com\/?p=13846","title":{"rendered":"SPM 05-17-2021: Heavy Rain and Flash Flood in Kit Carson County"},"content":{"rendered":"<p>Issue Date: Monday, May 17, 2021<br>\nIssue Time: 9:15 am MDT<\/p>\n<h3>Summary<\/h3>\n<p>Yesterday and overnight was another active severe weather day on the Eastern Plains. A tornado was reported in Ordway, CO, as well as two funnel clouds in Kit Carson and Cheyenne Counties. Large hail was also reported the southeastern quarter of the state between I-25 and I-70. The map below shows locations of all storm reports made to the <span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;NWS&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;National Weather Service&lt;\/div&gt;\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>NWS<\/span> in the previous 24-hours:<br><a href=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2021\/05\/Screenshot-2021-05-17-090003.png\"><img loading=\"lazy\" class=\"aligncenter wp-image-13849 size-full\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2021\/05\/Screenshot-2021-05-17-090003-e1621263902959.png\" alt=\"\" width=\"900\" height=\"492\"\/><\/a><\/p>\n<p><span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;CoCoRaHS&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;&amp;lt;!-- wp:paragraph {&amp;quot;textColor&amp;quot;:&amp;quot;white&amp;quot;} --&amp;gt;\n&amp;lt;p class=&amp;quot;has-white-color has-text-color&amp;quot;&amp;gt;&amp;lt;strong&amp;gt;Co&amp;lt;\/strong&amp;gt;mmunity &amp;lt;strong&amp;gt;Co&amp;lt;\/strong&amp;gt;llaborative &amp;lt;strong&amp;gt;Ra&amp;lt;\/strong&amp;gt;in, &amp;lt;strong&amp;gt;H&amp;lt;\/strong&amp;gt;ail, and &amp;lt;strong&amp;gt;S&amp;lt;\/strong&amp;gt;now Network, a volunteer network of precipitation observers across the country&amp;lt;\/p&amp;gt;\n&amp;lt;!-- \/wp:paragraph --&amp;gt;&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>CoCoRaHS<\/span> observers in Flagler, CO reported 3.75 inches in the 24-hour period ending at 6:00 am this morning. For this location, that amounts to a roughly 21-year Average Recurrence Interval (<span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;ARI&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;&amp;lt;strong&amp;gt;A&amp;lt;\/strong&amp;gt;verage &amp;lt;strong&amp;gt;R&amp;lt;\/strong&amp;gt;ecurrence &amp;lt;strong&amp;gt;I&amp;lt;\/strong&amp;gt;nterval; the average or expected length of time between the exceedance of a given rainfall threshold; average recurrence interval = 1\/(annual exceedance probability)&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>ARI<\/span>) or just under 5% chance Annual Exceedance Probability (<span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;AEP&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;&amp;lt;strong&amp;gt;A&amp;lt;\/strong&amp;gt;nnual &amp;lt;strong&amp;gt;E&amp;lt;\/strong&amp;gt;xceedance &amp;lt;strong&amp;gt;P&amp;lt;\/strong&amp;gt;robability; the probability that a given rainfall threshold will be exceeded in any given year; annual exceedance probability = 1\/(average recurrence interval)&lt;\/div&gt;\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>AEP<\/span>; the chance of occurring in any given year). These estimates are based on NOAA Atlas 14 and are published online at the Hydrometeorological Design Studies Center Precipitation Frequency Data Server, found here: <a href=\"https:\/\/hdsc.nws.noaa.gov\/hdsc\/pfds\/pfds_map_cont.html?bkmrk=co\" target=\"_blank\" rel=\"noopener noreferrer\">NOAA ATLAS 14 POINT PRECIPITATION FREQUENCY ESTIMATES: CO<\/a>. Surprisingly, no flooding was reported at this station.<\/p>\n<p>However, additional stations in Kit Carson county reported heavy evening and overnight rainfall totals ranging from 0.5-2.25 inches as well. <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;flash flooding&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;&amp;lt;!-- wp:paragraph {&amp;quot;textColor&amp;quot;:&amp;quot;white&amp;quot;} --&amp;gt;\n&amp;lt;p class=&amp;quot;has-white-color has-text-color&amp;quot;&amp;gt;flash flooding can refer to usually dry areas becoming rapidly inundated with water, or rapid water level rises on streams, creeks, or rivers beyond flood stage; typically caused by heavy rainfall, but can also be caused by meltwater&amp;lt;\/p&amp;gt;\n&amp;lt;!-- \/wp:paragraph --&amp;gt;&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>Flash flooding<\/span> in Downtown Stratton, CO was reported at 5:44 pm yesterday, with an estimated 1 inch of water cover the roadways. For additional rainfall estimates in your area, check out our State Precipitation Map below.<\/p>\n<h4 class=\"collapseomatic \" id=\"id6a1c828aa3d4a\" tabindex=\"0\" title=\"Click Here For Map Overview\">Click Here For Map Overview<\/h4><div id=\"target-id6a1c828aa3d4a\" class=\"collapseomatic_content \">\n<p>The map below shows radar-estimated, rainfall gage-adjusted Quantitative Precipitation Estimates (<span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;QPE&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;&amp;lt;strong&amp;gt;Q&amp;lt;\/strong&amp;gt;uantitative &amp;lt;strong&amp;gt;P&amp;lt;\/strong&amp;gt;recipitation &amp;lt;strong&amp;gt;E&amp;lt;\/strong&amp;gt;stimate; an estimate of the amount of precipitation that has fallen at a particular location or across a region based on several different data sources, such as radar or satellite; QPE is often calculated using remotely-sensed data sources&lt;\/div&gt;\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>QPE<\/span>) across Colorado. The map is updated daily during the operational season (May 1 &ndash; Sep 30) by 11AM. The following six layers are currently available: 24-hour, 48-hour and 72-hour total precipitation, as well as maximum 1-hour, 2-hour and 6-hour precipitation over the past 24 hour period (to estimate where <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;flash flooding&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;&amp;lt;!-- wp:paragraph {&amp;quot;textColor&amp;quot;:&amp;quot;white&amp;quot;} --&amp;gt;\n&amp;lt;p class=&amp;quot;has-white-color has-text-color&amp;quot;&amp;gt;flash flooding can refer to usually dry areas becoming rapidly inundated with water, or rapid water level rises on streams, creeks, or rivers beyond flood stage; typically caused by heavy rainfall, but can also be caused by meltwater&amp;lt;\/p&amp;gt;\n&amp;lt;!-- \/wp:paragraph --&amp;gt;&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>flash flooding<\/span> may have occurred). The accumulation ending time is 7AM of the date shown in the bottom right corner. Also shown optionally are vulnerable fire burn areas (post 2012), which are updated throughout the season to include new, vulnerable burn areas. The home button in the top left corner resets the map to the original zoom.<\/p>\n<\/div>\n<p><a href=\"http:\/\/www.dewberry-hydromet.com\/STP\/Snapshots\/SPM\/SPM_20210517_snap.png\"><img loading=\"lazy\" class=\"alignnone wp-image-13558 size-full\" src=\"http:\/\/www.dewberry-hydromet.com\/STP\/Snapshots\/SPM\/SPM_20210517_snap.png\" alt=\"\" width=\"906\" height=\"617\"\/><\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Issue Date: Monday, May 17, 2021 Issue Time: 9:15 am MDT Summary Yesterday and overnight was another active severe weather day on the Eastern Plains. A tornado was reported in Ordway, CO, as well as two funnel clouds in Kit Carson and Cheyenne Counties. Large hail was also reported the southeastern quarter of the state [&hellip;]<\/p>","protected":false},"author":14,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4],"tags":[],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/13846"}],"collection":[{"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/users\/14"}],"replies":[{"embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=13846"}],"version-history":[{"count":4,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/13846\/revisions"}],"predecessor-version":[{"id":13881,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/13846\/revisions\/13881"}],"wp:attachment":[{"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=13846"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=13846"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=13846"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}