{"id":15792,"date":"2021-08-29T08:52:20","date_gmt":"2021-08-29T14:52:20","guid":{"rendered":"https:\/\/www.coloradofloodthreat.com\/?p=15792"},"modified":"2021-08-30T08:36:58","modified_gmt":"2021-08-30T14:36:58","slug":"spm-08-29-2021-record-setting-heat-in-southern-colorado-before-cold-front","status":"publish","type":"post","link":"https:\/\/archive-coftb.dewberryanalytics.com\/?p=15792","title":{"rendered":"SPM 08-29-2021: Record Setting Heat in Southern Colorado Before Cold-Front"},"content":{"rendered":"<p>Issue Date: Sunday, August 29th, 2021<br>\nIssue Time: 10:00 AM MDT<\/p>\n<h3>Summary:<\/h3>\n<p>Saturday morning kicked off with a weak cold-front entering the northeast corner of the state, producing a bit of <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> ahead of it but very little in terms of precipitation along the Colorado-Nebraska border.  Then in the early afternoon <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 began to form in the San Juan Mountains, San Luis Valley, and Southeast Mountains. As the afternoon progressed, southern showers became more <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>, and some <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> also built up with the daytime heating along the Front Range Mountains before spilling into the Urban Corridor. If any significant precipitation fell, it was in Southern Colorado: 0.40 was reported in Pagosa Springs by a <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;CoCoRaHS&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;&amp;lt;strong&amp;gt;Co&amp;lt;\/strong&amp;gt;mmunity &amp;lt;strong&amp;gt;Co&amp;lt;\/strong&amp;gt;llaborative &amp;lt;strong&amp;gt;Ra&amp;lt;\/strong&amp;gt;in, &amp;lt;strong&amp;gt;H&amp;lt;\/strong&amp;gt;ail, and &amp;lt;strong&amp;gt;S&amp;lt;\/strong&amp;gt;now Network, a volunteer network of precipitation observers across the country&amp;lt;\/p&amp;gt;\n&amp;lt;!-- \/wp:paragraph --&amp;gt;&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>CoCoRaHS<\/span> observer, and a quick 0.48 inches was recorded at a APRSWXNET station near Zamara just after noon yesterday (Las Animas County, Grass Valley Station below). A second cold-frontal passage in the evening hours and overnight cooled off the Eastern half of the state, again with little precipitation. Western Colorado remained hot and dry. <\/p>\n<p><a href=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2021\/08\/mm_time_chart_dyn-5.png\"><img loading=\"lazy\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2021\/08\/mm_time_chart_dyn-5.png\" alt=\"\" width=\"600\" height=\"270\" class=\"aligncenter size-full wp-image-15802\" srcset=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2021\/08\/mm_time_chart_dyn-5.png 600w, https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2021\/08\/mm_time_chart_dyn-5-300x135.png 300w\" sizes=\"(max-width: 600px) 100vw, 600px\"\/><\/a><\/p>\n<p>The bigger weather story of the day was the impressive heat across Southern Colorado. Records were broken in Alamosa and Colorado Springs, and record-tying heat was reported in Pueblo &ndash; the Pueblo <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;WFO&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;W&amp;lt;\/strong&amp;gt;eather &amp;lt;strong&amp;gt;F&amp;lt;\/strong&amp;gt;orecast &amp;lt;strong&amp;gt;O&amp;lt;\/strong&amp;gt;ffice; the National Weather Service operates 122 WFOs across the United States, Guam, and Puerto Rico&amp;lt;\/p&amp;gt;&amp;lt;br \/&amp;gt;&amp;lt;!-- wp:paragraph --&amp;gt;\n&amp;lt;p&amp;gt;&amp;lt;\/p&amp;gt;\n&amp;lt;!-- \/wp:paragraph --&amp;gt;&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>WFO<\/span> shared the following tweets after each record was broken or tied. <\/p>\n<blockquote class=\"twitter-twee tw-align-centert\">\n<p lang=\"en\" dir=\"ltr\">As of 1 pm, the temperature has reached 94 degrees in Colorado Springs. This sets a new daily record high temperature for August 28th, surpassing the previous record of 93F, set in 1958. With a few more hours of heating to go, this record may continue to go up! <a href=\"https:\/\/twitter.com\/hashtag\/cowx?src=hash&amp;ref_src=twsrc%5Etfw\">#cowx<\/a><\/p>\n<p>&mdash; <span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;NWS&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;National Weather Service&lt;\/div&gt;\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>NWS<\/span> Pueblo (@NWSPueblo) <a href=\"https:\/\/twitter.com\/NWSPueblo\/status\/1431698168626958336?ref_src=twsrc%5Etfw\">August 28, 2021<\/a><\/p><\/blockquote>\n<p> <script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet tw-align-center\">\n<p lang=\"en\" dir=\"ltr\">At 328 pm, the temperature hit 87 degrees in Alamosa, Colorado. This ties the record high temperature for August 28th, of 87 degrees set in 2011. With a few more hours of heating to go, this record may be broken! <a href=\"https:\/\/twitter.com\/hashtag\/cowx?src=hash&amp;ref_src=twsrc%5Etfw\">#cowx<\/a><\/p>\n<p>&mdash; <span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;NWS&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;National Weather Service&lt;\/div&gt;\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>NWS<\/span> Pueblo (@NWSPueblo) <a href=\"https:\/\/twitter.com\/NWSPueblo\/status\/1431732666324471812?ref_src=twsrc%5Etfw\">August 28, 2021<\/a><\/p><\/blockquote>\n<p> <script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<blockquote class=\"twitter-tweet tw-align-center\">\n<p lang=\"en\" dir=\"ltr\">At 323 pm, the temperature touched 100 degrees in Pueblo, Colorado. This ties the record high temperature for August 28th, of 100F set in 1970. With a few more hours of heating to go, this record may be broken! <a href=\"https:\/\/twitter.com\/hashtag\/cowx?src=hash&amp;ref_src=twsrc%5Etfw\">#cowx<\/a><\/p>\n<p>&mdash; <span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;NWS&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;National Weather Service&lt;\/div&gt;\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>NWS<\/span> Pueblo (@NWSPueblo) <a href=\"https:\/\/twitter.com\/NWSPueblo\/status\/1431732031919169540?ref_src=twsrc%5Etfw\">August 28, 2021<\/a><\/p><\/blockquote>\n<p> <script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<p>For the second time this summer, the Pueblo <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;WFO&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;&amp;lt;p&amp;gt;&amp;lt;strong&amp;gt;W&amp;lt;\/strong&amp;gt;eather &amp;lt;strong&amp;gt;F&amp;lt;\/strong&amp;gt;orecast &amp;lt;strong&amp;gt;O&amp;lt;\/strong&amp;gt;ffice; the National Weather Service operates 122 WFOs across the United States, Guam, and Puerto Rico&amp;lt;\/p&amp;gt;&amp;lt;br \/&amp;gt;&amp;lt;!-- wp:paragraph --&amp;gt;\n&amp;lt;p&amp;gt;&amp;lt;\/p&amp;gt;\n&amp;lt;!-- \/wp:paragraph --&amp;gt;&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>WFO<\/span> also experienced a heat burst before the evening cold-frontal passage. The heat burst was caused by a thunderstorm northeast of Pueblo dissipating and forcing hot, dry air to the surface in the downdraft. This can be seen in the temperature time series from KPUB below, with temperatures rapidly increasing after 9:00 pm up to nearly 90 degrees before 11:00 pm. Temperatures then rapidly decrease again as the cold front passed through the area after 11:00.  The Pueblo Airport reported up to 0.29 inches of rain with the initial heat-burst causing thunderstorm. More information about <a href=\"https:\/\/www.weather.gov\/abq\/localfeatureheatburst\" rel=\"noopener\" target=\"_blank\">heat bursts can be found here<\/a>. <\/p>\n<p><a href=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2021\/08\/mm_time_chart_dyn_PUB.png\"><img loading=\"lazy\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2021\/08\/mm_time_chart_dyn_PUB.png\" alt=\"\" width=\"600\" height=\"270\" class=\"aligncenter size-full wp-image-15804\" srcset=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2021\/08\/mm_time_chart_dyn_PUB.png 600w, https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2021\/08\/mm_time_chart_dyn_PUB-300x135.png 300w\" sizes=\"(max-width: 600px) 100vw, 600px\"\/><\/a><\/p>\n<p>No flooding was reported on Saturday. For rainfall estimates in your area, check out the State Precipitation Map below. <\/p>\n<h4 class=\"collapseomatic \" id=\"id6a1c10948efc4\" tabindex=\"0\" title=\"Click Here For Map Overview\">Click Here For Map Overview<\/h4><div id=\"target-id6a1c10948efc4\" class=\"collapseomatic_content \">\nThe map below shows radar-estimated, rainfall gage-adjusted Quantitative Precipitation Estimates (<span class=\"glossaryLink\"  aria-describedby=\"tt\"  data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;QPE&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;&amp;lt;strong&amp;gt;Q&amp;lt;\/strong&amp;gt;uantitative &amp;lt;strong&amp;gt;P&amp;lt;\/strong&amp;gt;recipitation &amp;lt;strong&amp;gt;E&amp;lt;\/strong&amp;gt;stimate; an estimate of the amount of precipitation that has fallen at a particular location or across a region based on several different data sources, such as radar or satellite; QPE is often calculated using remotely-sensed data sources&lt;\/div&gt;\"  data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>QPE<\/span>) across Colorado. The map is updated daily during the operational season (May 1 &ndash; Sep 30) by 11AM. The following six layers are currently available: 24-hour, 48-hour and 72-hour total precipitation, as well as maximum 1-hour, 2-hour and 6-hour precipitation over the past 24 hour period (to estimate where <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> may have occurred). The accumulation ending time is 7AM of the date shown in the bottom right corner. Also shown optionally are vulnerable fire burn areas (post 2012), which are updated throughout the season to include new, vulnerable burn areas. The home button in the top left corner resets the map to the original zoom.\n<\/div>\n<p><img loading=\"lazy\" src=\"http:\/\/www.dewberry-hydromet.com\/STP\/Snapshots\/SPM\/SPM_20210829_snap.png\" width=\"880\" height=\"616\" class=\"alignnone size-large\"\/><\/p>","protected":false},"excerpt":{"rendered":"<p>Issue Date: Sunday, August 29th, 2021 Issue Time: 10:00 AM MDT Summary: Saturday morning kicked off with a weak cold-front entering the northeast corner of the state, producing a bit of <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> ahead of it but very little in terms of precipitation along the Colorado-Nebraska border. Then in the early afternoon <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 [&hellip;]<\/p>","protected":false},"author":14,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[4],"tags":[],"post_mailing_queue_ids":[],"_links":{"self":[{"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/15792"}],"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\/14"}],"replies":[{"embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=15792"}],"version-history":[{"count":4,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/15792\/revisions"}],"predecessor-version":[{"id":15824,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/15792\/revisions\/15824"}],"wp:attachment":[{"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=15792"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=15792"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=15792"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}