{"id":8283,"date":"2018-09-01T07:56:39","date_gmt":"2018-09-01T13:56:39","guid":{"rendered":"https:\/\/www.coloradofloodthreat.com\/?p=8283"},"modified":"2018-09-01T07:56:39","modified_gmt":"2018-09-01T13:56:39","slug":"ftb-09-01-2018-more-showers-and-thunderstorms-expected","status":"publish","type":"post","link":"https:\/\/archive-coftb.dewberryanalytics.com\/?p=8283","title":{"rendered":"FTB 09-01-2018: More Showers and Thunderstorms Expected"},"content":{"rendered":"<p>Issue Date: 9\/1\/2018<br>\nIssue Time: 8:00 AM<\/p>\n<p><em>NO FLOOD THREAT IS FORECAST TODAY.<\/em><\/p>\n<p>An upper-level <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;trough&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;An elongated area of relatively low atmospheric pressure; the opposite of a ridge.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>trough<\/span> currently situated with its axis (red dashed line) over Utah and Arizona will advance into western Colorado today, continuing the influx of mid-level moisture from the south-southwest into the state. A few weak disturbances ahead of the axis will shift across Colorado today and tonight, providing a few triggers for <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 and thunderstorms. Low-level moisture across much of the state remains lackluster, generally speaking, so most of the activity today will remain high-based, producing gusty winds, lightning, and brief periods of light-to-moderate rainfall.<\/p>\n<p><a href=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2018\/09\/WV_20180901.png\"><img loading=\"lazy\" class=\"size-full wp-image-8284 aligncenter\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2018\/09\/WV_20180901.png\" alt=\"\" width=\"635\" height=\"513\"\/><\/a><\/p>\n<p>While no flood threat has been issued, sensitive burn scars of the Southwest Slope, San Juan Mountains, and Southeast Mountains may need some attention today should multiple rounds of marginal rainfall move overhead. However, due to the <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> nature of showers\/thunderstorms today, their generally high-based nature, and expected quick storm motions to the east-northeast, no flood threat is warranted.<\/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.<\/p>\n<p><a href=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2017\/08\/no_threat.png\"><img loading=\"lazy\" class=\"aligncenter wp-image-6157\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2017\/08\/no_threat.png\" alt=\"\" width=\"880\" height=\"580\"\/><\/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><strong>Zone-Specific Forecasts<\/strong><\/h3>\n<h4><strong>Urban Corridor, Palmer Ridge, Northeast Plains, Southeast Plains, and Raton Ridge:<\/strong><\/h4>\n<p><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 and thunderstorms are expected today and tonight across the area. Most activity will be garden variety, producing more wind than rain, as low-level moisture isn&rsquo;t favorable for heavy rainfall. The bets moisture, and therefore the best chance at strong thunderstorms capable of periods of moderate-to-heavy rainfall will be east of a line drawn through Raymer-Fort Morgan-Limon-Ordway-Branson. Maximum rain rates are as follows:<\/p>\n<p>Urban Corridor: 0.3-0.6 inches\/hour<br>\nPalmer Ridge: 0.4-0.8 inches\/hour<br>\nNortheast Plains and Southeast Plains: 1.0-1.5 inches\/hour<br>\nRaton Ridge: 0.4-0.6 inches\/hour<\/p>\n<p>Timing: 1 PM &ndash; 10 PM for the Urban Corridor, 1 PM &ndash; Midnight for the Northeast Plains and Palmer Ridge, Ongoing &ndash; 2 AM for the Raton Ridge and Southeast Plains<\/p>\n<h4><strong>Northern Mountains, Northwest Slope, Front Range, Central Mountains, Grand Valley, Southeast Mountains, San Juan Mountains, Southwest Slope, and San Luis Valley:<\/strong><\/h4>\n<p><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>, high-based showers and thunderstorms are expected today\/tonight as the upper-level <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;trough&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;An elongated area of relatively low atmospheric pressure; the opposite of a ridge.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>trough<\/span> moves into the area. Moisture is lacking, generally speaking, and storm motions are relatively quick, so no flood threat is warranted today. As mentioned above, sensitive burn scars may need a bit of monitoring should they be impacted by multiple rounds of marginal rainfall, but the probability of <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> is less than 10%. Rain rates will generally be below 0.1-0.2 inches\/hour, with maximum rates of 0.2-0.4 inches\/hour for thunderstorms south of I-70.<\/p>\n<p>Timing: 11 AM &ndash; 11 PM for the Southwest Slope, San Juan Mountains, Southeast Mountains, and San Luis Valley, 11 AM &ndash; 9 PM for the Northwest Slope, Northern Mountains, Central Mountains, Front Range, and Grand Valley<\/p>","protected":false},"excerpt":{"rendered":"<p>Issue Date: 9\/1\/2018 Issue Time: 8:00 AM NO FLOOD THREAT IS FORECAST TODAY. An upper-level <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;trough&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;An elongated area of relatively low atmospheric pressure; the opposite of a ridge.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>trough<\/span> currently situated with its axis (red dashed line) over Utah and Arizona will advance into western Colorado today, continuing the influx of mid-level moisture from the south-southwest into the state. A few weak disturbances ahead of the axis will [&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\/8283"}],"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=8283"}],"version-history":[{"count":1,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/8283\/revisions"}],"predecessor-version":[{"id":8285,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/8283\/revisions\/8285"}],"wp:attachment":[{"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=8283"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=8283"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=8283"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}