{"id":18181,"date":"2022-07-04T09:40:16","date_gmt":"2022-07-04T15:40:16","guid":{"rendered":"https:\/\/www.coloradofloodthreat.com\/?p=18181"},"modified":"2022-07-04T10:33:05","modified_gmt":"2022-07-04T16:33:05","slug":"ftb-07-04-2022-rinse-repeat-rainfall-pattern-from-yesterday-but-downtick-in-coverage-for-the-4th-of-july","status":"publish","type":"post","link":"https:\/\/archive-coftb.dewberryanalytics.com\/?p=18181","title":{"rendered":"FTB 07-04-2022: Rinse &#038; Repeat Rainfall Pattern From Yesterday, But Downtick In Coverage For The 4th\u00a0of July"},"content":{"rendered":"<p>Issue Date: Monday, July 4th, 2022<br>\nIssue Time: 9:40AM MDT<\/p>\n<p><em>&mdash;<\/em><em> Flooding is&nbsp;<\/em><strong><em>NOT&nbsp;<\/em><\/strong><em>expected today<\/em><br><em>&mdash;<\/em><em>&nbsp;<\/em><strong><em>Fire-Burn Forecast Summary:<\/em><\/strong><em>&nbsp;2<\/em><em> burn areas under LOW threat; click <a href=\"https:\/\/archive-coftb.dewberryanalytics.com\/?cat=7\">HERE<\/a> for more info<\/em><\/p>\n<p>A happy 4<sup>th<\/sup> of July to everyone! A classic Colorado summer day is on tap with above average temperatures forecast out east and near normal to slightly below average temperatures forecast over western Colorado. Afternoon storms are expected to fire over the mountains in a similar manner to yesterday; however, the incoming <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;trough&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;An elongated area of relatively low atmospheric pressure; the opposite of a ridge.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>trough<\/span> off the west coast has helped produce a drier southwesterly flow over the western and northern portions of the state. That boundary is marked in green in the water vapor imagery below, which for the forecast, translates to slightly less coverage of storms when compared to yesterday. <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> was still measured at 0.91 inches at Grand Junction this morning, which is quite moist, but a lot of dry air was noted above ~600mb. This, paired with the faster steering flows over the area again, should help to temper rainfall activity and the flood threat today. The <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>, but stronger storms that develop will again be capable of producing small hail, strong <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;outflow&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;A cool pool of air that results when a thunderstorm downdraft reaches the surface and spreads horizontally.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>outflow<\/span> winds and plenty of lightning over the area.<\/p>\n<p><a href=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2022\/07\/wv_20220704.jpg\"><img loading=\"lazy\" class=\"aligncenter wp-image-18186\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2022\/07\/wv_20220704-300x172.jpg\" alt=\"\" width=\"700\" height=\"402\" srcset=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2022\/07\/wv_20220704-300x172.jpg 300w, https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2022\/07\/wv_20220704-1024x588.jpg 1024w, https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2022\/07\/wv_20220704-768x441.jpg 768w, https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2022\/07\/wv_20220704.jpg 1478w\" sizes=\"(max-width: 700px) 100vw, 700px\"\/><\/a><\/p>\n<p>Switching over to eastern Colorado, <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 Denver was measured at 0.69 inches, so right around average. <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;dew points&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;The temperature to which a given air parcel must be cooled (at constant pressure and water vapor content) in order for saturation to occur.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>Dew points<\/span> were also noted around 50&deg;F across the lower elevations, but increasing westerly flow aloft will likely mix out some of this shallow moisture as the day progresses. At the surface, a <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;trough&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;An elongated area of relatively low atmospheric pressure; the opposite of a ridge.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>trough<\/span> axis was noted over the plains this morning, oriented from southwest to northeast. This should help keep upslope rather weak this afternoon and prevent strong moisture <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;advection&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;The process of transport of an atmospheric property, typically temperature or moisture in our FTB discussions, by the wind. &amp;quot;Strong&rdquo; or &amp;quot;weak&rdquo; advection refers to the rate of change of the advected property&amp;#039;s value at a given point.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>advection<\/span> back to the west. Thus, 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> storms that develop should pose less of a flood risk today even though steering flow remains rather weak over this area. As storms move off the mountains into the I-25 Corridor, gusty <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;outflow&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;A cool pool of air that results when a thunderstorm downdraft reaches the surface and spreads horizontally.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>outflow<\/span> winds and dangerous lightning will continue to be the main threats. Moderate rainfall will be possible under the more stationary storms, which will be most likely along and near the elevated ridges, but rain rates are expected to stay under flood threat criteria. Thus, there is NO flood threat issued today.<\/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><img loading=\"lazy\" class=\"wp-image-13436 aligncenter\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2022\/05\/FTB_NoThreat_2022_light.png\" alt=\"\" width=\"768\" height=\"573\"\/><\/p>\n<h3><strong>Zone-Specific Forecasts:<\/strong><\/h3>\n<h4><strong>Front Range, Central Mountains, San Juan Mountains, Northern Mountains &amp; Southeast Mountains:<\/strong><\/h4>\n<p><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> to <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 are forecast today with the best coverage of thunderstorms over the northern San Juan Mountains, Central Mountains and southern Front Range. Max 1-hour rain rates up to 0.85 inches will be possible along 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> storm totals up to 1.25 inches, which will be most likely to occur over the northern San Juan Mountains and near the <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;Continental Divide&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;the dividing line that separates the watersheds of the western and eastern United States; rivers west of the divide empty into the Pacific Ocean, while rivers east of the divide empty into the Atlantic Ocean or Gulf of Mexico&amp;lt;\/p&amp;gt;\n&amp;lt;!-- \/wp:paragraph --&amp;gt;&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>Continental Divide<\/span>. In addition to dangerous lightning, strong thunderstorms will also be capable of producing small hail and brief, gusty wind. Most activity will end in the late evening hours, but some lingering rainfall will again be possible tonight (south). Flooding is NOT expected today.<\/p>\n<p>Primetime: 1PM to 10:30PM<\/p>\n<h4><strong>Raton Ridge, Palmer Ridge, Urban Corridor, Northeast Plains &amp; Southeast Plains: <\/strong><\/h4>\n<p>Steering flows will likely push 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> storms into these forecast zones by mid-afternoon favoring the Palmer Ridge and northwards for lasting rainfall activity. Max 1-hour rainfall rates up to 0.75 inches will be possible along 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> storms totals up to 1.1 inches, but most storms will produce storm totals under 0.40 inches. The stronger storms also have the potential to produce brief, <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;outflow&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;A cool pool of air that results when a thunderstorm downdraft reaches the surface and spreads horizontally.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>outflow<\/span> winds up to 40 mph.<\/p>\n<p>Primetime: 1:30PM to 11PM<strong>&nbsp;<\/strong><\/p>\n<h4><strong>Northwest Slope, Southwest Slope, Grand Valley &amp; San Luis Valley:<\/strong><\/h4>\n<p>More <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 are forecast to develop over the elevated ridges and mesas this afternoon. Storms may produce some windy conditions as well as dangerous lightning. Max 30-minute rain rates up to 0.5 inches will be possible, so flooding is NOT expected.<\/p>\n<p>Primetime: Noon to 9PM<\/p>","protected":false},"excerpt":{"rendered":"<p>Issue Date: Monday, July 4th, 2022 Issue Time: 9:40AM MDT &mdash; Flooding is&nbsp;NOT&nbsp;expected today &mdash;&nbsp;Fire-Burn Forecast Summary:&nbsp;2 burn areas under LOW threat; click HERE for more info A happy 4th of July to everyone! A classic Colorado summer day is on tap with above average temperatures forecast out east and near normal to slightly below [&hellip;]<\/p>","protected":false},"author":8,"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\/18181"}],"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\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=18181"}],"version-history":[{"count":3,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/18181\/revisions"}],"predecessor-version":[{"id":18189,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/18181\/revisions\/18189"}],"wp:attachment":[{"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=18181"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=18181"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=18181"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}