{"id":3371,"date":"2016-08-08T09:44:17","date_gmt":"2016-08-08T15:44:17","guid":{"rendered":"https:\/\/www.coloradofloodthreat.com\/?p=3371"},"modified":"2016-08-09T06:30:52","modified_gmt":"2016-08-09T12:30:52","slug":"ftb-08-08-2016-heavy-rain-remains-possible-low-flood-threat","status":"publish","type":"post","link":"https:\/\/archive-coftb.dewberryanalytics.com\/?p=3371","title":{"rendered":"FTB 08-08-2016: Heavy Rain Remains Possible, Low Flood Threat"},"content":{"rendered":"<p>Issue Date: 8\/8\/2016<br>\nIssue Time: 9:40 AM<\/p>\n<p><em>A LOW FLOOD THREAT IS FORECAST TODAY FOR PORTIONS OF THE PALMER RIDGE, URBAN CORRIDOR, SOUTHEAST PLAINS, NORTHEAST PLAINS, FRONT RANGE, AND SOUTHEAST MOUNTAINS.<\/em><\/p>\n<p><em>A LOW FLOOD THREAT IS FORECAST TODAY FOR PORTIONS OF THE SOUTHWEST SLOPE AND SAN JUAN MOUNTAINS.<\/em><\/p>\n<p>Flow aloft will turn more westerly today, thanks to the upper-level high settling over the southern Rockies. This will bring in drier air from the west, which will lessen the threat for <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>, especially west of 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>. From a statewide perspective, IPW values have fallen below 1 inch this morning at three of the normal reporting stations (Schriever AFB is not reporting currently). There will still be the opportunity for heavy rain east of 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>, as residual moisture and surface dewpoints in the 50s and 60s provide the fuel for efficient rainfall production. Storm motions are expected to be a bit quicker today, as well, which will also mitigate the flooding threat. The main concern areas for any flooding issues will be areas that have received heavy rainfall over the past few days, as well as burn scars like the Hayden Pass Fire, which will react quickly to any heavy rain.<\/p>\n<p><a href=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2016\/08\/IPW_20160808.png\"><img loading=\"lazy\" class=\"  wp-image-3372 aligncenter\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2016\/08\/IPW_20160808.png\" alt=\"IPW_20160808\" width=\"522\" height=\"231\"\/><\/a><\/p>\n<p>A couple severe storms are possible east of the Front Range\/Southeast Mountains, where ample instability will be in place this afternoon\/evening. Sufficient <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;wind shear&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Local variation of the wind, either in the horizontal or vertical direction.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>wind shear<\/span>, mainly in the mid-levels will allow for a couple organized storm clusters, with the main threats being strong winds and periods of heavy rainfall. Small hail may mix in, as well. The best opportunity for these storms will be across the Urban Corridor, Palmer Ridge, and Northeast Plains.<\/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 (hover over threat areas for more details). For Zone-Specific forecasts, jump below the map.<br><a href=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2016\/08\/20160808_LFT.png\"><img loading=\"lazy\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2016\/08\/20160808_LFT.png\" alt=\"20160808_LFT\" width=\"887\" height=\"497\" class=\"alignnone size-full wp-image-3380\"\/><\/a><\/p>\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><\/h3>\n<h3><strong>Zone-Specific Forecasts<\/strong><\/h3>\n<h4><strong>Urban Corridor, Northeast Plains, Palmer Ridge, Southeast Plains and Raton Ridge:<\/strong><\/h4>\n<p><span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;widely scattered&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;10-25% areal coverage&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>Widely scattered<\/span> showers and thunderstorms are expected this afternoon and evening, moving west to east with the steering flow. Most areas will see any storm activity come to an end by 8-9 PM, with only a couple lingering storms over the far eastern Plains until 11 PM-Midnight. Maximum rain rates are as follows:<\/p>\n<p>Urban Corridor and Raton Ridge: 0.6-1.0 inches\/hour<br>\nPalmer Ridge: 1.5-2.0 inches\/hour<br>\nNortheast Plains and Southeast Plains: 2.0-2.5 inches\/hour<\/p>\n<h4><strong>Front Range, Northern Mountains, Southeast Mountains, Northwest Slope, San Juan Mountains, Southwest Slope, San Luis Valley, Central Mountains, and Grand Valley:<\/strong><\/h4>\n<p>A few <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;scattered&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;25-40% areal coverage&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>scattered<\/span> showers\/thunderstorms are ongoing this morning due to their proximity to the upper-level jet. New development of showers\/thunderstorms will begin around 11 AM, with coverage increasing through the 5 PM, before decreasing again as daytime heating wanes and drier air helps choke off <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>. Most of the moisture exists above 3 km, so the moisture profile is a bit &ldquo;top-heavy&rdquo; today. Still, dewpoints in the 40s and 50s will keep the threat of moderate-to-heavy rain in the forecast, mainly for southern zones. For this reason, the low flood threat has been issued for portions of the San Juan Mountains, Southwest Slope, Southeast Mountains, and Front Range. Maximum rain rates are as follows:<\/p>\n<p>Front Range: 0.8-1.2 inches\/hour<br>\nSoutheast Mountains and San Juan Mountains: 0.8-1.4 inches\/hour<br>\nSouthwest Slope and San Luis Valley: 0.6-1.0 inches\/hour<br>\nGrand Valley, Northwest Slope, Northern Mountains, and Central Mountains: 0.4-0.8 inches\/hour<\/p>","protected":false},"excerpt":{"rendered":"<p>Issue Date: 8\/8\/2016 Issue Time: 9:40 AM A LOW FLOOD THREAT IS FORECAST TODAY FOR PORTIONS OF THE PALMER RIDGE, URBAN CORRIDOR, SOUTHEAST PLAINS, NORTHEAST PLAINS, FRONT RANGE, AND SOUTHEAST MOUNTAINS. A LOW FLOOD THREAT IS FORECAST TODAY FOR PORTIONS OF THE SOUTHWEST SLOPE AND SAN JUAN MOUNTAINS. Flow aloft will turn more westerly today, [&hellip;]<\/p>","protected":false},"author":1,"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\/3371"}],"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\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3371"}],"version-history":[{"count":2,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/3371\/revisions"}],"predecessor-version":[{"id":3381,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/3371\/revisions\/3381"}],"wp:attachment":[{"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3371"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3371"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3371"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}