{"id":1159,"date":"2015-07-07T10:55:59","date_gmt":"2015-07-07T16:55:59","guid":{"rendered":"https:\/\/www.coloradofloodthreat.com\/?p=1159"},"modified":"2015-07-08T09:48:21","modified_gmt":"2015-07-08T15:48:21","slug":"ftb-07-07-2015-very-moist-atmosphere-to-deliver-more-heavy-rainfall-today","status":"publish","type":"post","link":"https:\/\/archive-coftb.dewberryanalytics.com\/?p=1159","title":{"rendered":"FTB 07-07-2015: Very Moist Atmosphere To Deliver More Heavy Rainfall Today"},"content":{"rendered":"<p>Issue Date: 7\/7\/2015<br>\nIssue Time: 10:45AM<\/p>\n<p><em>&mdash; <strong>Moderate<\/strong> flood threat for Northwest Slope, Grand Valley, Southwest Slope, San Juan Mountains, Central Mountains and Northern Mountains<br>\n&mdash; <strong>Low<\/strong> flood threat for Front Range, San Luis Valley, Southeast Mountains and Raton Ridge<br><\/em><\/p>\n<p>The incredibly moist spring has transitioned into an equally moist summer across our state with many Colorado residents waking up to dewpoints exceeding 50F on a near-daily basis. Today is no exception. In addition to the plentiful surface moisture, the atmosphere is moist throughout its entire column (roughly up to 40,000 feet). The best measure of this is <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;precipitable water&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;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\"}]'>precipitable water<\/span> (<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>), which was 1.0-1.2 inches across all four sites that we regularly monitor: Pueblo, Colorado Springs, Boulder and Grand Junction. We expect PWs to stay in the 1.0-1.4 inch range throughout the course of the day. In short, these values are about as high as we see here in Colorado, so it is clear that a heavy rainfall threat exists today.<\/p>\n<p>Coupled with the high moisture content today, atmospheric dynamics are also conducive for heavy rainfall. The water vapor image below shows that a deep upper-level low is positioned west of California. However, its influence extends into Colorado with several shortwaves noted across western CO and over UT. As these features propagate eastward, they will spark <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;numerous&lt;\/div&gt;&lt;div class=glossaryItemBody&gt;40-60% areal coverage&lt;\/div&gt;\" data-gt-translate-attributes='[{\"attribute\":\"data-cmtooltip\", \"format\":\"html\"}]'>numerous<\/span> rounds of shower and thunderstorm activity from late this morning into the late evening hours. Most of the higher terrain will once again be in a Moderate flood threat today. In the lower elevations east of the <span class=\"glossaryLink\" aria-describedby=\"tt\" data-cmtooltip=\"&lt;div class=glossaryItemTitle&gt;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\"}]'>Divide<\/span>, atmospheric instability is limited so no flood threat is anticipated today.<\/p>\n<p><a href=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2015\/07\/watervapor_20150707.png\"><img loading=\"lazy\" class=\"aligncenter  wp-image-1160\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2015\/07\/watervapor_20150707.png\" alt=\"watervapor_20150707\" width=\"817\" height=\"460\"\/><\/a><\/p>\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\/2015\/07\/FTB_snapshot_20150707.png\"><img loading=\"lazy\" class=\"aligncenter  wp-image-1172\" src=\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2015\/07\/FTB_snapshot_20150707.png\" alt=\"FTB_snapshot_20150707\" width=\"830\" height=\"544\"\/><\/a><\/p>\n<h3><strong>Zone Specific Forecasts<\/strong><\/h3>\n<p><strong>Northwest Slope, Grand Valley, Southwest Slope, San Juans, Central Mountains, Northern Mountains, San Luis Valley:<\/strong><\/p>\n<p>Mostly cloudy this morning with ongoing thunderstorm activity intensifying and growing in coverage. Maximum 1-hour rain rates will be 1.25 inches. Multiple storms crossing one area will result in maximum 6-hour rain rates up to 2 inches. Heavy rainfall will bring a threat of <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>, debris slides and mud flows. A Moderate flood threat is in place over most of the region with a Low threat elsewhere. Hail up to 0.75 inches may accompany the strongest storms. Please stay tuned to National Weather Service warnings for specific local information.<\/p>\n<p>Primetime: 11am to 11pm<\/p>\n<p><strong>Front Range, Palmer Ridge, Southeast Plains, Raton Ridge, Southeast Mountains: <\/strong><\/p>\n<p>Overcast this morning with some sunshine by early afternoon, leading to thunderstorms. <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> activity will be likely across the higher terrain. One hour rain rates up to 2 inches will be possible, resulting in <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>, debris slides and mud flows. Street flooding will be possible as well.<\/p>\n<p>Primetime: 2pm to 10pm<\/p>\n<p><strong>Urban Corridor, Northeast Plains:<\/strong><\/p>\n<p>Overcast and cool conditions with some breaks in the cloud cover possible by late afternoon. An <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> thunderstorm cannot be ruled out along the I-25 corridor in the late afternoon. The strongest storm will be capable of rainfall up to 1 inch per hour. No flooding is expected due to <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 coverage and limited runoff.<\/p>\n<p>Primetime: 2pm to 9pm<\/p>","protected":false},"excerpt":{"rendered":"<p>Issue Date: 7\/7\/2015 Issue Time: 10:45AM &mdash; Moderate flood threat for Northwest Slope, Grand Valley, Southwest Slope, San Juan Mountains, Central Mountains and Northern Mountains &mdash; Low flood threat for Front Range, San Luis Valley, Southeast Mountains and Raton Ridge The incredibly moist spring has transitioned into an equally moist summer across our state with [&hellip;]<\/p>","protected":false},"author":4,"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\/1159"}],"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=1159"}],"version-history":[{"count":5,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/1159\/revisions"}],"predecessor-version":[{"id":1179,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/1159\/revisions\/1179"}],"wp:attachment":[{"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1159"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1159"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1159"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}