{"id":2715,"date":"2016-06-13T09:11:34","date_gmt":"2016-06-13T15:11:34","guid":{"rendered":"https:\/\/www.coloradofloodthreat.com\/?p=2715"},"modified":"2016-06-13T09:22:47","modified_gmt":"2016-06-13T15:22:47","slug":"ftb-06-13-2016-active-day-ahead-severe-storms-possible","status":"publish","type":"post","link":"https:\/\/archive-coftb.dewberryanalytics.com\/?p=2715","title":{"rendered":"FTB 06-13-2016: Active Day Ahead, Severe Storms Likely"},"content":{"rendered":"<p>Issue Date: 6\/13\/2016<br>\nIssue Time: 9:10 AM<\/p>\n<p><em>A MODERATE FLOOD THREAT HAS BEEN ISSUED FOR PORTIONS OF THE NORTHEAST PLAINS, SOUTHEAST PLAINS, PALMER RIDGE, AND URBAN CORRIDOR.<\/em><\/p>\n<p><em>A LOW FLOOD THREAT SURROUNDS THE MODERATE FLOOD THREAT, INCLUDING PORTIONS OF THE RATON RIDGE, FRONT RANGE, SOUTHEAST MOUNTAINS, CENTRAL MOUNTAINS, AND NORTHERN MOUNTAINS.<\/em><\/p>\n<p><em>A LOW FLOOD THREAT HAS BEEN ISSUED FOR THE GREEN RIVER IN WEST CENTRAL MOFFAT COUNTY, THE CACHE LA POUDRE RIVER AT THE CANYON MOUTH AFFECTING LARIMER COUNTY, AND THE CACHE LA POUDRE RIVER NEAR GREELEY AFFECTING WELD COUNTY.<\/em><\/p>\n<p>This period looks to be an active one across the state as a mid-\/upper-level disturbance shifts across the region. At the surface, dewpoints continue to sit in the 40s\/50s across eastern Colorado, with a few locations reporting dewpoints near 60 F. This moisture shows up well in the IPW chart below: Pueblo (pink line) is above 1 inch, and both Boulder (blue) and Schriever AFB (red) are near 0.8 inches. The Grand Junction station shows that it is a bit drier to the west, but sufficient moisture remains.<\/p>\n<p><a href=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2016\/06\/IPW_20160613.png\"><img loading=\"lazy\" class=\"  wp-image-2716 aligncenter\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2016\/06\/IPW_20160613.png\" alt=\"IPW_20160613\" width=\"512\" height=\"224\"\/><\/a><\/p>\n<p>For areas along\/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>, ingredients are coming together for another day of <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> strong\/severe storms, with an uptick in intensity over yesterday&rsquo;s storms expected. All hazards are possible with severe storms, including damaging winds, large hail, <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> tornadoes, and heavy rain. Storm motions will mitigate the flood threat somewhat, as storms will move at a decent clip to the east. Even so, owing to the depth of moisture and available instability\/upper-level support, a moderate flood threat is warranted.<\/p>\n<p>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>, moisture\/instability will be less than points to the east, and storm motions will be quicker, general speaking. A few stronger storms will be possible this afternoon\/early evening, producing small hail, gusty <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;outflow&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;A cool pool of air that results when a thunderstorm downdraft reaches the surface and spreads horizontally.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>outflow<\/span> winds, and brief periods of moderate-to-heavy rain. Even so, storm motions preclude the issuance of any flood threat for these areas.<\/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<div style=\"position: relative;\"><iframe loading=\"lazy\" src=\"https:\/\/a.tiles.mapbox.com\/v4\/sgeiger.0d22ogop\/attribution,zoompan,zoomwheel,geocoder,share.html?access_token=pk.eyJ1Ijoic2dlaWdlciIsImEiOiJmNjc5a3RBIn0.LbLupVkJsS5dbo9fsgrTDg\" width=\"100%\" height=\"500px\" frameborder=\"0\"><\/iframe><\/div>\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, Raton Ridge, and Southeast Plains:<\/strong><\/h4>\n<p>An active weather day ahead, with <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> thunderstorms expected. The environment is favorable for the development of strong\/severe storms, with all severe hazards possible: This includes hail (up to 1.5-2.5 inches in diameter), damaging winds (greater than 50 mph), and <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> tornadoes, along with heavy rain. Maximum rain rates are as follows:<\/p>\n<p>Urban Corridor, Palmer Ridge, and Southeast Plains: 1.8-2.5 inches\/hour<br>\nRaton Ridge: 1.5-2.0 inches\/hour<br>\nNortheast Plains: 2.0-3.0 inches\/hour<\/p>\n<p>Timing: Noon &ndash; Midnight, with a few showers\/thunderstorms continuing into the morning hours, mainly along the eastern CO border<\/p>\n<h4><strong>Front Range, Northern Mountains, Central Mountains, and Southeast Mountains:<\/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\/thunderstorms are expected, and a couple will be on the strong side. The main threats from storms will be gusty winds, hail, and periods of moderate-to-heavy rainfall. Maximum rain rates are follows:<\/p>\n<p>Front Range: 1.5-2.0 inches\/hour<br>\nNorthern Mountains, Central Mountains, and Southeast Mountains: 0.8-1.2 inches\/hour<\/p>\n<p>Timing: 10 AM &ndash; 10 PM, with a couple <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> showers\/thunderstorms lingering until 2 AM.<\/p>\n<h4><strong>Northwest Slope, Grand Valley, Southwest Slope, San Juan Mountains, 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> showers\/thunderstorms are expected. The higher terrain will see the most coverage, but due to storm motions and the nature of the broad-scale lift overspreading the area, valleys will get in on 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> showers\/storms, as well. A few storms will become strong, producing small hail and gusty <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;outflow&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;A cool pool of air that results when a thunderstorm downdraft reaches the surface and spreads horizontally.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>outflow<\/span> winds. Brief periods of moderate-to-heavy rainfall are possible, but storm motions preclude the issuance of any flood threat. Even so, be on the lookout for minor street ponding underneath stronger thunderstorms, mainly where drainage is poor.<\/p>\n<p>Maximum rain rates&hellip;<\/p>\n<p>Northwest Slope: 0.3-0.6 inches\/hour<br>\nGrand Valley, Southwest Slope, and San Juan Mountains: 0.4-0.8 inches\/hour<br>\nSan Luis Valley: 0.2-0.4 inches\/hour<\/p>\n<p>Timing: Ongoing &ndash; 9 PM, with a couple of <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> showers\/weak thunderstorms continuing until 11 PM over the higher terrain.<\/p>","protected":false},"excerpt":{"rendered":"<p>Issue Date: 6\/13\/2016 Issue Time: 9:10 AM A MODERATE FLOOD THREAT HAS BEEN ISSUED FOR PORTIONS OF THE NORTHEAST PLAINS, SOUTHEAST PLAINS, PALMER RIDGE, AND URBAN CORRIDOR. A LOW FLOOD THREAT SURROUNDS THE MODERATE FLOOD THREAT, INCLUDING PORTIONS OF THE RATON RIDGE, FRONT RANGE, SOUTHEAST MOUNTAINS, CENTRAL MOUNTAINS, AND NORTHERN MOUNTAINS. A LOW FLOOD THREAT [&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\/2715"}],"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=2715"}],"version-history":[{"count":2,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/2715\/revisions"}],"predecessor-version":[{"id":2718,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/2715\/revisions\/2718"}],"wp:attachment":[{"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2715"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2715"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2715"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}