{"id":9850,"date":"2019-07-14T08:55:54","date_gmt":"2019-07-14T14:55:54","guid":{"rendered":"https:\/\/www.coloradofloodthreat.com\/?p=9850"},"modified":"2019-07-15T07:22:27","modified_gmt":"2019-07-15T13:22:27","slug":"spm-07-14-2019-hot-with-scattered-thunderstorms-street-flooding","status":"publish","type":"post","link":"https:\/\/archive-coftb.dewberryanalytics.com\/?p=9850","title":{"rendered":"SPM 07-14-2019: Hot with Scattered Thunderstorms, Street Flooding"},"content":{"rendered":"<p>Issue Date: Sunday, July 14th, 2019<br>\nIssue Time: 9:10 AM MDT<\/p>\n<h3>Summary:<\/h3>\n<p>High pressure aloft centered over the southern Rockies yesterday allowed high temperatures to climb to seasonally hot temperatures. Underneath the ridge of high pressure, southwest flow continued to transport good mid-level moisture into the state, which set the stage for a classic Colorado mid-summer thunderstorm day. <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> storms got an earlier start over the mountains, kicking off by late-morning over the higher elevations. Most storms over the High Country produced light-to-moderate rainfall and gusty winds, but a stronger storm near Montrose produced a few severe reports: (1) 62 mph wind gust (2 miles NW of Montrose, (2) a tree blown over onto a car in Montrose, and (3) minor street flooding in Montrose.<\/p>\n<p>East of the mountains it took a few more degrees of heating to spark activity, 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> storms began around 1 PM. Initially, they produced light-to-moderate rainfall and gusty winds owing to a relative lack of moisture below cloud bases. However, as the day progressed, <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 earlier storms moistened the near-surface layer, and allowed for a couple strong thunderstorms over the Denver metro during the evening, producing gusty winds, heavy rain, and hail. 1.0 inch diameter hail was reported 3 miles ENE of Broomfield, and 0.88 inch diameter hail was reported 2 miles SSW of Buckley AFB. The big story, though, was the heavy rainfall. Street flooding occurred across portions of Denver:<\/p>\n<p>Highway 6 under Federal Boulevard<br>\nIntersection of W. Colfax Avenue and Raleigh Street<br>\nIowa Avenue between Santa Fe Drive and Broadway<\/p>\n<p>A few light rain showers were ongoing after sunrise this morning over portions of the Southwest Slope, San Juan Mountains, Grand Valley, and Central Mountains regions. For a look at precipitation estimates in your area, please see the State Precipitation Map below.<\/p>\n<h4 class=\"collapseomatic \" id=\"id6a1f1acd2bb06\" tabindex=\"0\" title=\"Click Here For Map Overview\">Click Here For Map Overview<\/h4><div id=\"target-id6a1f1acd2bb06\" class=\"collapseomatic_content \">\n<p>The 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 24-hour, 48-hour and 72-hour total precipitation contain bias corrections that are not disaggregated into the hourly estimates, so there will likely be some differences. 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.<\/p>\n<\/div>\n<p><a href=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2019\/07\/SPM_20190714_snap.png\"><img loading=\"lazy\" class=\"alignnone wp-image-9862 size-full\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2019\/07\/SPM_20190714_snap.png\" alt=\"\" width=\"880\" height=\"616\"\/><\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Issue Date: Sunday, July 14th, 2019 Issue Time: 9:10 AM MDT Summary: High pressure aloft centered over the southern Rockies yesterday allowed high temperatures to climb to seasonally hot temperatures. Underneath the ridge of high pressure, southwest flow continued to transport good mid-level moisture into the state, which set the stage for a classic Colorado [&hellip;]<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","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\/9850"}],"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=9850"}],"version-history":[{"count":2,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/9850\/revisions"}],"predecessor-version":[{"id":9863,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/9850\/revisions\/9863"}],"wp:attachment":[{"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=9850"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=9850"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=9850"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}