{"id":9112,"date":"2019-05-26T09:04:53","date_gmt":"2019-05-26T15:04:53","guid":{"rendered":"https:\/\/www.coloradofloodthreat.com\/?p=9112"},"modified":"2019-10-14T09:37:00","modified_gmt":"2019-10-14T15:37:00","slug":"ftb-05-26-2019-active-weather-on-tap-for-colorado","status":"publish","type":"post","link":"https:\/\/archive-coftb.dewberryanalytics.com\/?p=9112","title":{"rendered":"FTB 05-26-2019: Active Weather on Tap for Colorado"},"content":{"rendered":"<p>Issue Date: 5\/26\/2019<br>\nIssue Time: 9:20 AM<\/p>\n<p><em>A <strong>LOW FLOOD THREAT<\/strong> IS FORECAST TODAY.<\/em><\/p>\n<p>An active weather day is expected for eastern Colorado, and this can be evidenced by the return of low-level moisture. Highlighted on the surface map below is the area of 50&deg;+F dewpoints, with a few 60&deg;+F dewpoints sneaking into the far Southeast Plains. This moisture will be the fuel behind today&rsquo;s threat of strong\/severe storms for areas east of the mountains and will be sufficient enough for the introduction of a flood threat. Meanwhile, over the High Country, residual moisture that remains in place will be enough for high-based showers\/thunderstorms this afternoon\/evening. There are three trigger mechanisms today that will set off the thunderstorms: 1) daytime heating, 2) a disturbance aloft, and 3) a sharpening <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;dryline&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;A low-level, small-scale boundary that separates dry air from moist air. Storms develop along it because the dry air (behind the boundary) is less dense than the moisture-rich air (ahead of the boundary). Typically, it advances eastward during the afternoon and retreats westward at night.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>dryline<\/span> over southeast Colorado. The combination of the three will provide enough forcing 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 across the state, with all regions getting involved, albeit some more than others.<\/p>\n<p><a href=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2019\/05\/SFC_20190526.png\"><img loading=\"lazy\" class=\" wp-image-9113 aligncenter\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2019\/05\/SFC_20190526.png\" alt=\"\" width=\"438\" height=\"438\"\/><\/a><\/p>\n<p>Over the High Country, moisture is too shallow for any concerns over heavy rainfall; instead, 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> activity today will be garden-variety and high-based, producing gusty winds, light rainfall, and occasional lightning. East of the mountains, however, moisture is sufficient for the production of strong\/<span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;severe thunderstorms&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Thunderstorms that produce a tornado, winds of at least 58 mph (50 kts) and\/or hail at least 1&amp;quot; in diameter.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>severe thunderstorms<\/span>, as well as periods of heavy rainfall. Storm motions will be quick enough to the east\/northeast to limit the flood threat, but not quick enough to avoid a low flood threat.<\/p>\n<p>For more details on timing and rain rates, please see the zone-specific forecast discussions below.<\/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, jump below the map.<br><a href=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2019\/05\/LFT_20190526.png\"><img loading=\"lazy\" class=\"size-full wp-image-9117 aligncenter\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2019\/05\/LFT_20190526.png\" alt=\"\" width=\"634\" height=\"467\"\/><\/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, Northeast Plains, Southeast Plains, Palmer Ridge, 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> strong\/<span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;severe thunderstorms&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Thunderstorms that produce a tornado, winds of at least 58 mph (50 kts) and\/or hail at least 1&amp;quot; in diameter.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>severe thunderstorms<\/span> are expected today\/tonight, kicking off around 1 PM, and continuing into the nighttime hours. Instability, fueled by daytime heating and good moisture, will promote rapid thunderstorm development and coupled with adequate <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>, storms will hold the potential for all severe hazards (i.e., large hail (up to 2.5 inches in diameter), strong winds (up to 70 mph), and a couple tornadoes). The bulk of thunderstorm activity is expected over the Northeast Plains and Southeast Plains, with more <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> storms over the Urban Corridor and Palmer Ridge. The Raton Ridge region will be behind the dry line, so <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> development there is expected to be high-based, producing mainly gusty winds and periods of light rainfall. Maximum rain rates are as follows:<\/p>\n<p>Northeast Plains and Southeast Plains: 1.5-2.5 inches\/hour<br>\nUrban Corridor and Palmer Ridge: 1.0-1.5 inches\/hour<br>\nRaton Ridge: 0.2-0.4 inches\/hour<\/p>\n<p>Timing: 1 PM &ndash; 9 PM for the Raton Ridge, 1 PM &ndash; 10 PM for the Palmer Ridge, 1 PM &ndash; 11 PM for the Southeast Plains, 1 PM &ndash; Midnight for the Urban Corridor and Northeast Plains, where a Denver convergence zone will try to keep some storms going into the night.<\/p>\n<h4><strong>Front Range, Southeast Mountains, Northern Mountains, Northwest Slope, San Luis Valley, Central Mountains, San Juan Mountains, Grand Valley, and Southwest Slope:<\/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\/storms are expected this afternoon and evening across the area, with the bulk of storm activity over the higher terrain of the Southwest Slope, San Juan Mountains, Central Mountains, Northern Mountains, Southeast Mountains, and Front Range. Most of the activity will be high-based, moving quickly to the northeast, producing gusty winds and periods of light rainfall. The best chance at wetting rainfall will be over the Front Range, where good surface moisture has backed into the mountains from the eastern plains. The maximum rain rates are as follows:<\/p>\n<p>Front Range: 0.2-0.4 inches\/hour<br>\nNorthern Mountains and Central Mountains: 0.15-0.30 inches\/hour<br>\nSoutheast Mountains, San Juan Mountains, Southwest Slope, Grand Valley, and Northwest Slope: 0.1-0.2 inches\/hour<br>\nSan Luis Valley:<\/p>\n<p>Timing: Noon &ndash; 10 PM<\/p>","protected":false},"excerpt":{"rendered":"<p>Issue Date: 5\/26\/2019 Issue Time: 9:20 AM A LOW FLOOD THREAT IS FORECAST TODAY. An active weather day is expected for eastern Colorado, and this can be evidenced by the return of low-level moisture. Highlighted on the surface map below is the area of 50&deg;+F dewpoints, with a few 60&deg;+F dewpoints sneaking into the far [&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\/9112"}],"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=9112"}],"version-history":[{"count":4,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/9112\/revisions"}],"predecessor-version":[{"id":11100,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/9112\/revisions\/11100"}],"wp:attachment":[{"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9112"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9112"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9112"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}