{"id":3610,"date":"2016-08-28T10:17:52","date_gmt":"2016-08-28T16:17:52","guid":{"rendered":"https:\/\/www.coloradofloodthreat.com\/?p=3610"},"modified":"2016-08-29T06:30:53","modified_gmt":"2016-08-29T12:30:53","slug":"ftb-08-28-2016-upper-level-low-brings-another-unsettled-period","status":"publish","type":"post","link":"https:\/\/archive-coftb.dewberryanalytics.com\/?p=3610","title":{"rendered":"FTB 08-28-2016: Upper-Level Low Brings Another Unsettled Period"},"content":{"rendered":"<p>Issue Date: 8\/28\/2016<br>\nIssue Time: 10:15 AM<\/p>\n<p><em>A LOW FLOOD THREAT IS FORECAST TODAY FOR PORTIONS OF THE NORTHWEST SLOPE, NORTHERN MOUNTAINS, CENTRAL MOUNTAINS, GRAND VALLEY, SOUTHWEST SLOPE, SAN JUAN MOUNTAINS, FRONT RANGE, SOUTHEAST MOUNTAINS, URBAN CORRIDOR, PALMER RIDGE, RATON RIDGE, NORTHEAST PLAINS, AND SOUTHEAST PLAINS.<\/em><\/p>\n<p>Another unsettled period is expected as an upper-level low shifts eastward out of the 4-corners region and into northern New Mexico. This will provide favorable dynamics for the production 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>-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> showers\/storms across much of Colorado. Much like yesterday, the higher terrain and western slope will see the best coverage, while areas east of the mountains remain in 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>-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> category. A slight increase in moisture (shown well in the chart below), as well as an uptick in instability, will provide a bit more fuel for today&rsquo;s thunderstorms, keeping the threat of heavy rain in the forecast for areas south of I-70. Even so, the flood threat remains on the low end of the scale, thanks to weak <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;wind shear&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;Local variation of the wind, either in the horizontal or vertical direction.&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>wind shear<\/span> keeping storm organization\/maintenance limited. Most activity will come to an end around 10-11 PM, with a few showers\/storms continuing into the overnight and early morning hours thanks to favorable dynamics aloft.<\/p>\n<p><a href=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2016\/08\/IPW_20160828.png\"><img loading=\"lazy\" class=\"  wp-image-3611 aligncenter\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2016\/08\/IPW_20160828.png\" alt=\"IPW_20160828\" width=\"567\" height=\"251\"\/><\/a><\/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.<br><a href=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2016\/08\/20160828_LFT.png\"><img loading=\"lazy\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2016\/08\/20160828_LFT.png\" alt=\"20160828_LFT\" width=\"887\" height=\"498\" class=\"alignnone size-full wp-image-3613\"\/><\/a><\/p>\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>Northeast Plains, Urban Corridor, Palmer Ridge, Southeast Plains, and Raton Ridge:<\/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> showers\/thunderstorms expected, with the best coverage near the mountains, along the preferred terrain of the Palmer Ridge and Raton Ridge, and across the far Southeast Plains. Most will be garden variety, but a couple will become strong-to-marginally severe, producing bouts with heavy rain, small hail, and strong winds. Maximum rain rates are as follows:<\/p>\n<p>Northeast Plains: 1.5-2.0 inches\/hour<br>\nSoutheast Plains: 1.8-2.5 inches\/hour<br>\nUrban Corridor, Palmer Ridge, and Raton Ridge: 0.8-1.2 inches\/hour<\/p>\n<p>Timing: 1 PM &ndash; 11 PM, with a few lingering showers\/storms into the early morning hours<\/p>\n<h4><strong>Front Range, Southeast Mountains, Northern Mountains, Northwest Slope, Grand Valley, Central Mountains, San Juan Mountains, Southwest Slope, and San Luis Valley:<\/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> showers and thunderstorms are expected, with most being garden variety. Better daytime heating today, as compared to yesterday, will bring about a couple more thunderstorms capable of locally heavy rainfall. Maximum rain rates will be:<\/p>\n<p>Northwest Slope, Northern Mountains, and Central Mountains: 0.6-1.0 inches\/hour<br>\nGrand Valley, Southwest Slope, San Juan Mountains, San Luis Valley, Front Range, and Southeast Mountains: 0.8-1.2 inches\/hour<\/p>\n<p>Timing: 11 AM &ndash; 9 PM, with a few lingering showers\/weak thunderstorms into the early morning hours<\/p>","protected":false},"excerpt":{"rendered":"<p>Issue Date: 8\/28\/2016 Issue Time: 10:15 AM A LOW FLOOD THREAT IS FORECAST TODAY FOR PORTIONS OF THE NORTHWEST SLOPE, NORTHERN MOUNTAINS, CENTRAL MOUNTAINS, GRAND VALLEY, SOUTHWEST SLOPE, SAN JUAN MOUNTAINS, FRONT RANGE, SOUTHEAST MOUNTAINS, URBAN CORRIDOR, PALMER RIDGE, RATON RIDGE, NORTHEAST PLAINS, AND SOUTHEAST PLAINS. Another unsettled period is expected as an upper-level low [&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\/3610"}],"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=3610"}],"version-history":[{"count":2,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/3610\/revisions"}],"predecessor-version":[{"id":3614,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/3610\/revisions\/3614"}],"wp:attachment":[{"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3610"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3610"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3610"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}