{"id":7979,"date":"2018-08-10T09:08:40","date_gmt":"2018-08-10T15:08:40","guid":{"rendered":"https:\/\/www.coloradofloodthreat.com\/?p=7979"},"modified":"2018-08-11T08:20:02","modified_gmt":"2018-08-11T14:20:02","slug":"ftb-08-10-2018-showers-and-thunderstorms-return-to-the-san-juan-and-central-mountains","status":"publish","type":"post","link":"https:\/\/archive-coftb.dewberryanalytics.com\/?p=7979","title":{"rendered":"FTB 08-10-2018: Showers and Thunderstorms Return to the San Juan and Central Mountains"},"content":{"rendered":"<p>Issue Date: Friday, August 10th, 2018<br>\nIssue Time: 09:15AM MDT<\/p>\n<p><em>&mdash; A <strong>LOW <\/strong>flood threat has been issued for the 416 and Burro burn areas <\/em><\/p>\n<p>Morning storms over the Northeast Plains&nbsp;to start Friday. This thunderstorm complex will continue to crawl south\/southwest throughout the morning producing lightning, gusty winds and light-to-moderate rainfall. Similar to Wednesday morning, some additional <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;convection&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Refers to vertical atmospheric motion driven by buoyancy, i.e., warm air is less dense than cool air, and therefore rises. One of the primary drivers of thunderstorm development, especially during monsoon season.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>convection<\/span> may initiate as the sun begins to heat the surface, but it shouldn&rsquo;t make it further south than the Palmer <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Divide&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;the dividing line that separates the watersheds of the western and eastern United States; rivers west of the divide empty into the Pacific Ocean, while rivers east of the divide empty into the Atlantic Ocean or Gulf of Mexico&amp;lt;\/p&amp;gt;\n&amp;lt;!-- \/wp:paragraph --&amp;gt;&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>Divide<\/span>. Max 1-hour rain rates up to 0.7 inches are possible, so not expecting any flooding. The visible satellite imagery below again shows the heavy subtropical moisture&nbsp;remaining&nbsp;to our south (below the green line). The north\/northeast upper-level flow will continue today, so showers and thunderstorms should be confined to the higher terrains. This flow may also pull in a little extra moisture to the far southwest corner of the state near the CO\/NM border throughout the day. In spite of this, there will still be quite a spread between the temperature and <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;dew point&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;The temperature to which a given air parcel must be cooled (at constant pressure and water vapor content) in order for saturation to occur.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>dew point<\/span>. This is anticipated to promote gusty winds rather than heavy rainfall this afternoon.<\/p>\n<p><a href=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2018\/08\/vis_20180810.png\"><img loading=\"lazy\" class=\"size-full wp-image-7980 aligncenter\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2018\/08\/vis_20180810.png\" alt=\"\" width=\"526\" height=\"413\"\/><\/a><\/p>\n<p><span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;convection&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Refers to vertical atmospheric motion driven by buoyancy, i.e., warm air is less dense than cool air, and therefore rises. One of the primary drivers of thunderstorm development, especially during monsoon season.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>Convection<\/span> will return to the southwest corner of the state this afternoon, which will bring another day of&nbsp;measurable rain to the San Juan and Central Mountains. The only difference from Thursday is the center of action will shift a little further west. Storm motion will be fairly swift to the south\/southwest, and with dry soils, <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;widespread&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;greater than 60% areal coverage&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>widespread<\/span> flooding is not foreseen. However, rain rates will be high enough to trigger mud flows and debris slides over the 416 and Burro burn areas if a storm tracks directly over a recent scar. A Low flood threat has been issued for these areas. Over the Southeast Mountains and Southern Front Range, shower and thunderstorm activity will be more <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;isolated&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;less than 10% areal coverage&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>isolated<\/span>. Similar to yesterday, storm formation will be greatest along or near the <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Continental Divide&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;the dividing line that separates the watersheds of the western and eastern United States; rivers west of the divide empty into the Pacific Ocean, while rivers east of the divide empty into the Atlantic Ocean or Gulf of Mexico&amp;lt;\/p&amp;gt;\n&amp;lt;!-- \/wp:paragraph --&amp;gt;&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>Continental Divide<\/span>. An <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;isolated&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;less than 10% areal coverage&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>isolated<\/span> storm is also possible where the Southern Front Range and Palmer Ridge intersect. Decreases in surface moisture over this area should keep rain rates low enough that they won&rsquo;t pose a threat to the burn scars in the region. Storm activity over the mountains should decrease with sundown with all activity ending a couple of hours after that.<\/p>\n<h3><strong>Today&rsquo;s Flood Threat Map<\/strong><\/h3>\n<p>For more information on today&rsquo;s flood threat, see the map below. For Zone-Specific forecasts, scroll below the map.<\/p>\n<div style=\"position: relative;\"><a href=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2018\/08\/FTB_20180810_snap.png\"><img loading=\"lazy\" class=\"aligncenter wp-image-7994\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2018\/08\/FTB_20180810_snap.png\" alt=\"\" width=\"880\" height=\"677\"\/><\/a>\n<div><img loading=\"lazy\" class=\"alignright wp-image-135\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2015\/04\/floodthreat_legend2.png\" alt=\"Flood Threat Legend\" width=\"275\" height=\"71\"\/><\/div>\n<h3><strong>Zone-Specific Forecasts:<\/strong><\/h3>\n<h4><strong>Southeast Mountains, Central Mountains, Southwest Slope<\/strong><strong>, <\/strong><strong>Raton Ridge, San Juan Mountains, San Luis Valley, Front Range, Palmer Ridge:<\/strong><\/h4>\n<p>Storm activity will look similar to yesterday except there will be another westward shift with the center of action. The strongest <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;convection&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Refers to vertical atmospheric motion driven by buoyancy, i.e., warm air is less dense than cool air, and therefore rises. One of the primary drivers of thunderstorm development, especially during monsoon season.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>convection<\/span> this afternoon will be over the San Juan and Central Mountains. Storm motion will be to the southwest, so expecting storms to wander into the southern Southwest Slope as well. Max 1-hour rain rates up to 0.6 inches are possible with 24-hour totals near 1 inch. Initially, thunderstorms are anticipated to produce gusty winds with the second round of storms producing more wetting rains this evening. Storms over the eastern mountains will be more <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;isolated&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;less than 10% areal coverage&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>isolated<\/span> and should be confined to near the <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Continental Divide&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;the dividing line that separates the watersheds of the western and eastern United States; rivers west of the divide empty into the Pacific Ocean, while rivers east of the divide empty into the Atlantic Ocean or Gulf of Mexico&amp;lt;\/p&amp;gt;\n&amp;lt;!-- \/wp:paragraph --&amp;gt;&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>Continental Divide<\/span>, though an <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;isolated&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;less than 10% areal coverage&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>isolated<\/span> storm in Teller County may be possible. A Low flood threat has been issued for the 416 and Burro burn scars. Threats for storms that track over these recent burns scars are mud flows, debris slides and localized <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>.<\/p>\n<p>Primetime: 1PM &ndash; 10PM<\/p>\n<h4><strong>Northern<\/strong><strong> Mountains, Northwest Slope, <\/strong><strong>Grand Valley<\/strong><strong>, <\/strong><strong>Northeast Plains, Southeast Plains, Urban Corridor: <\/strong><\/h4>\n<p><span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;convection&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Refers to vertical atmospheric motion driven by buoyancy, i.e., warm air is less dense than cool air, and therefore rises. One of the primary drivers of thunderstorm development, especially during monsoon season.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>Convection<\/span> to start the morning over the Northeast Plains. This system should move south\/southwest throughout the morning producing light-to-moderate rainfall and gusty winds. Max 1-hour rain rates up to 0.7 inches are possible. The northeasterly flow aloft and arid air mass should keep these regions dry this afternoon. Some cloud cover is likely over the higher terrains this evening. High temperatures will be similar to yesterday.<\/p>\n<p>Primetime: 9AM &ndash; 11:30AM<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Issue Date: Friday, August 10th, 2018 Issue Time: 09:15AM MDT &mdash; A LOW flood threat has been issued for the 416 and Burro burn areas Morning storms over the Northeast Plains&nbsp;to start Friday. This thunderstorm complex will continue to crawl south\/southwest throughout the morning producing lightning, gusty winds and light-to-moderate rainfall. Similar to Wednesday morning, [&hellip;]<\/p>","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[6],"tags":[],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/7979"}],"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\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=7979"}],"version-history":[{"count":4,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/7979\/revisions"}],"predecessor-version":[{"id":7996,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/7979\/revisions\/7996"}],"wp:attachment":[{"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=7979"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=7979"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=7979"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}