{"id":1645,"date":"2015-08-14T09:42:51","date_gmt":"2015-08-14T15:42:51","guid":{"rendered":"https:\/\/www.coloradofloodthreat.com\/?p=1645"},"modified":"2015-08-15T07:26:47","modified_gmt":"2015-08-15T13:26:47","slug":"ftb-08-14-2015-subtle-changes-compared-to-yesterday","status":"publish","type":"post","link":"https:\/\/archive-coftb.dewberryanalytics.com\/?p=1645","title":{"rendered":"FTB 08-14-2015: Subtle Changes Compared to Yesterday"},"content":{"rendered":"<p>Issue Date: 8\/14\/2015<br>\nIssue Time: 9:30 AM<\/p>\n<p><em>A LOW FLOOD THREAT IS FORECAST FOR PORTIONS OF THE NORTHERN MOUNTAINS, CENTRAL MOUNTAINS, FRONT RANGE, SAN JUAN MOUNTAINS, SOUTHEAST MOUNTAINS, URBAN CORRIDOR, PALMER RIDGE, RATON RIDGE, AND SOUTHEAST PLAINS.<\/em><\/p>\n<p>The high pressure ridge will remain anchored over Colorado today, but subtle changes from yesterday will make the difference in today&rsquo;s forecast. The main difference is that there is really no disturbance expected to track over Colorado. Instead, the main driver behind today&rsquo;s thunderstorm activity will be daytime heat working on residual moisture under the ridge. Put simply, the activity will favor the higher terrain (especially early in the afternoon), with only a few thunderstorms moving over\/developing above the Urban Corridor, Palmer Ridge, and Southeast Plains regions.<\/p>\n<p><a href=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2015\/08\/08142015_WV.png\"><img loading=\"lazy\" class=\"  wp-image-1644 aligncenter\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2015\/08\/08142015_WV.png\" alt=\"08142015_WV\" width=\"479\" height=\"356\"\/><\/a><\/p>\n<p>Underneath the ridge, weak flow aloft will allow for slow storm motions. This, combined with <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;precipitable water&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;The total atmospheric water vapor contained in a vertical column of the atmosphere. It is typically measured in inches, and anomalously (deviation from normal) high values of precipitable water generally correlate to heavy rainfall potential.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>precipitable water<\/span> values near, or above, an inch, will allow for heavy rainfall to impact a localized area for an extended period of time. Tempering the flood threat, though, is that instability is fairly low with warm mid-\/upper-levels, so intense <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 be difficult. With all things considered, the low flood threat is warranted. For more details regarding rain rates and timing, please see the zone-specific 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 (hover over threat areas for more details). For Zone-Specific forecasts, jump below the map. **OUR MAPPING SERVICE IS EXPERIENCING TECHNICAL DIFFICULTIES THIS MORNING. THE MAP WILL BECOME INTERACTIVE AS SOON AS THEIR ISSUES ARE RESOLVED. WE APOLOGIZE FOR THE INCONVENIENCE.**<\/p>\n<div style=\"position: relative;\"><a href=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2015\/08\/08142015_LFT1.png\"><img loading=\"lazy\" class=\" size-full wp-image-1648 aligncenter\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2015\/08\/08142015_LFT1.png\" alt=\"08142015_LFT\" width=\"653\" height=\"480\"\/><\/a><\/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, Raton Ridge, Palmer Ridge, and Southeast Plains:<\/strong><\/h4>\n<p><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>-to-<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> thunderstorms are expected, mainly near the higher terrain. Further east over the Southeast Plains, 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> thunderstorms will develop during the late afternoon\/evening thanks to <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;outflow boundaries&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;A surface boundary formed by the horizontal spreading of thunderstorm-cooled air. Outflow boundaries may intersect with each other or with other features (fronts, dry line, low-level jet) and initiate new convection. Brief strong winds are possible with outflow boundaries, and they can also persist for more than 24 hours.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>outflow boundaries<\/span> from mountain <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> moving into the moist environment. Maximum rain rates will vary&hellip;<\/p>\n<p>Northeast Plains: 0.6-1.0 inches\/hour<br>\nUrban Corridor and Palmer Ridge: 0.8-1.2 inches\/hour<br>\nSoutheast Plains and Palmer Ridge: 1.2-2.0 inches\/hour<\/p>\n<p>Timing: 1 PM &ndash; 10 PM, with a thunderstorm or two lingering until midnight over the Southeast Plains.<\/p>\n<h4><strong>Northern Mountains, Front Range, Central Mountains, San Luis Valley, Northwest Slope, San Juan Mountains, Southwest Slope, Grand Valley, 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> thunderstorms are expected over the higher terrain, with the best coverage expected over the Northern Mountains, Front Range, Central Mountains, Southeast Mountains, and San Juan Mountains. Maximum rain rates will vary&hellip;<\/p>\n<p>Northwest Slope, Grand Valley, and Southwest Slope: 0.25-0.5 inches\/hour<br>\nNorthern Mountains: 0.6-1.0 inches\/hour<br>\nFront Range, Central Mountains, and Southeast Mountains: 1.2-1.8 inches\/hour<br>\nSan Juan Mountains and San Luis Valley: 0.6-1.0 inches\/hour<\/p>\n<p>Timing: 11 AM &ndash; 10 PM<\/p>","protected":false},"excerpt":{"rendered":"<p>Issue Date: 8\/14\/2015 Issue Time: 9:30 AM A LOW FLOOD THREAT IS FORECAST FOR PORTIONS OF THE NORTHERN MOUNTAINS, CENTRAL MOUNTAINS, FRONT RANGE, SAN JUAN MOUNTAINS, SOUTHEAST MOUNTAINS, URBAN CORRIDOR, PALMER RIDGE, RATON RIDGE, AND SOUTHEAST PLAINS. The high pressure ridge will remain anchored over Colorado today, but subtle changes from yesterday will make the [&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\/1645"}],"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=1645"}],"version-history":[{"count":2,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/1645\/revisions"}],"predecessor-version":[{"id":1651,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/1645\/revisions\/1651"}],"wp:attachment":[{"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1645"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1645"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1645"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}