{"id":19770,"date":"2022-09-15T10:24:29","date_gmt":"2022-09-15T16:24:29","guid":{"rendered":"https:\/\/www.coloradofloodthreat.com\/?p=19770"},"modified":"2022-09-17T08:31:03","modified_gmt":"2022-09-17T14:31:03","slug":"ftb-09-15-2022-showers-and-storms-expected-for-central-eastern-areas","status":"publish","type":"post","link":"https:\/\/archive-coftb.dewberryanalytics.com\/?p=19770","title":{"rendered":"FTB 09-15-2022: Showers And Storms Expected For Central\/Eastern Areas"},"content":{"rendered":"<p>Issue Date: Thursday, September 15<sup>th<\/sup>, 2022<br>\nIssue Time: 10:25AM MDT<\/p>\n<p><em>&mdash; A <strong>LOW<\/strong> flood threat has been posted for parts of the Palmer Ridge and Northeast Plains<\/em><br><em>&mdash; <\/em><em><strong>Fire-Burn Forecast Summary:<\/strong>&nbsp;<\/em><em>3&nbsp;burn areas under LOW threat; click&nbsp;<\/em><a href=\"https:\/\/archive-coftb.dewberryanalytics.com\/?cat=7\">HERE<\/a><em>&nbsp;for more info<\/em><\/p>\n<p>One does not have to live in Colorado for a long time to know that morning clouds during the warm season are unusual. As seen in the visible satellite image, below, an expansive cloud deck resides over the western and central parts of the state. Ongoing showers and weak storm activity is noted over the Northern Mountains, Central Mountains and Northwest Slope. The supporting feature is a mid-level disturbance, of modest intensity, draped from northwest Colorado through the New Mexico border. This feature is well juxtaposed with a moisture maximum: this morning&rsquo;s <span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;PW&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;(Stands for: Precipitable Water) 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\"}]'>PW<\/span> at Grand Junction continued to run high at 0.91 inches, while Platteville came in at 0.80 inches.<\/p>\n<p><a href=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2022\/09\/vis_markup-1.png\"><img loading=\"lazy\" class=\" wp-image-19771 aligncenter\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2022\/09\/vis_markup-1.png\" alt=\"\" width=\"703\" height=\"431\" srcset=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2022\/09\/vis_markup-1.png 806w, https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2022\/09\/vis_markup-1-300x184.png 300w, https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2022\/09\/vis_markup-1-768x471.png 768w\" sizes=\"(max-width: 703px) 100vw, 703px\"\/><\/a><\/p>\n<p>As the disturbance moves across the state, <span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;PW&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;(Stands for: Precipitable Water) 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\"}]'>PW<\/span> is expected to stay elevated over central and eastern Colorado, while falling slightly over far western areas. This will support <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> to <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;widespread&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;greater than 60% areal coverage&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>widespread<\/span> showers and storms today, mainly over the northeastern quadrant of the state. Most activity over the higher terrain will be benign, with only brief moderate to (very briefly) heavy rainfall expected. Instability will be a key uncertainty as the expansive cloud deck will limit heating in its vicinity. However, over parts of the Front Range, Palmer Ridge and Northeast Plains, instability up to 1,200 J\/kg <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;CAPE&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;(Stands for: Convective Available Potential Energy) CAPE is a measure of the amount of available energy in the atmosphere for convection. Higher values indicate a greater potential for stronger updrafts, thus an increase in the potential for thunderstorms and severe weather.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>CAPE<\/span> is expected to develop this afternoon. Additionally, with low-level flow backing to have a notable southerly component by early afternoon, a Denver Cyclonic Vorticity Zone is expected to develop. This will promote enhanced convergence over the climatologically favored Palmer Ridge area. In this region, 30-60 minutes of heavy rainfall will be possible during a 2-3 hour window this afternoon. A LOW flood threat has been posted for <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> <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> in this region. Storms are expected to weaken into showers by early evening as instability wanes. Nonetheless, very welcome rainfall is expected for parts of the 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. If there is a threat, hover over the threat areas for more details, and click on burn areas to learn more about them. For Zone-Specific forecasts, scroll below the threat map.<\/p>\n<p><a href=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2022\/09\/FTB_20220915_snap.png\"><img loading=\"lazy\" class=\"aligncenter wp-image-19790\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2022\/09\/FTB_20220915_snap-300x203.png\" alt=\"\" width=\"880\" height=\"597\" srcset=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2022\/09\/FTB_20220915_snap-300x203.png 300w, https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2022\/09\/FTB_20220915_snap-1024x695.png 1024w, https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2022\/09\/FTB_20220915_snap-768x521.png 768w, https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2022\/09\/FTB_20220915_snap-1536x1042.png 1536w, https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2022\/09\/FTB_20220915_snap.png 1784w\" sizes=\"(max-width: 880px) 100vw, 880px\"\/><\/a><\/p>\n<h3>Zone-Specific Forecasts:<\/h3>\n<h4>Northeast Plains, Urban Corridor &amp; Palmer Ridge:<\/h4>\n<p>Increasing clouds 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> to <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;widespread&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;greater than 60% areal coverage&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>widespread<\/span> showers and storms developing by early afternoon. Max 30-min\/60-min rain rates up to 1.2\/1.6 inches possible especially over parts of the northern Palmer Ridge. A LOW flood threat has been posted for this area.<\/p>\n<p>Elsewhere, brief moderate to heavy rainfall is possible especially during the afternoon, with max 30-min accumulation up to 0.6 inches (west) and 1.0 inches (east). However, flooding is NOT expected.<\/p>\n<p>Primetime: 1PM to 9PM<\/p>\n<h4>Northwest Slope, Northern Mountains, Central Mountains, Front Range &amp; Grand Valley:<\/h4>\n<p>Mostly cloudy 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> showers and embedded storms expected through mid-afternoon, then some clearing is possible. Cool conditions with temperature 5-10F below normal today. Max 30-min rain rates up to 0.5 inches possible. Some ponding of runoff may occur, but flooding is NOT expected today.<\/p>\n<p>Primetime: 10AM through 5PM<\/p>\n<h4>San Juan Mountains, Southwest Slope, Southeast Plains, Southeast Mountains, Raton Ridge &amp; San Luis Valley:<\/h4>\n<p>Mostly sunny early, then partly cloudy with <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> showers and weak storms possible. Max 30-hour rain rates up to 0.7 inches (far eastern areas towards KS border) and 0.4 inches (west of I-25). Flooding is NOT expected today.<\/p>\n<p>Primetime (west): 10AM through 4PM<br>\nPrimetime (east): 1PM through 9PM<\/p>","protected":false},"excerpt":{"rendered":"<p>Issue Date: Thursday, September 15th, 2022 Issue Time: 10:25AM MDT &mdash; A LOW flood threat has been posted for parts of the Palmer Ridge and Northeast Plains &mdash; Fire-Burn Forecast Summary:&nbsp;3&nbsp;burn areas under LOW threat; click&nbsp;HERE&nbsp;for more info One does not have to live in Colorado for a long time to know that morning clouds [&hellip;]<\/p>","protected":false},"author":4,"featured_media":0,"comment_status":"closed","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\/19770"}],"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\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=19770"}],"version-history":[{"count":3,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/19770\/revisions"}],"predecessor-version":[{"id":19805,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/19770\/revisions\/19805"}],"wp:attachment":[{"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=19770"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=19770"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=19770"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}