{"id":17707,"date":"2022-06-18T09:53:18","date_gmt":"2022-06-18T15:53:18","guid":{"rendered":"https:\/\/www.coloradofloodthreat.com\/?p=17707"},"modified":"2022-06-19T08:19:17","modified_gmt":"2022-06-19T14:19:17","slug":"spm-subtropical-moisture-surges-into-western-colorado","status":"publish","type":"post","link":"https:\/\/archive-coftb.dewberryanalytics.com\/?p=17707","title":{"rendered":"SPM 06-18-2022: Subtropical Moisture Surges Into Western Colorado"},"content":{"rendered":"

Issue Date: Saturday, June 18th, 2022
\nIssue Time: 9:45 AM MDT<\/p>\n

Summary:<\/h3>\n

A steady plume of northward-moving subtropical moisture brought numerous<\/span> rain showers and thunderstorms across western Colorado yesterday afternoon through the overnight hours. NWS<\/span> Pueblo issued a late-morning flash flood<\/span> warning<\/span> over the Spring Creek burn scar, and their 12:01pm update estimated rain rates of 0.5 to 1 inch per hour over the burn scar. This flash flood<\/span> warning<\/span> was allowed to expire at 2:45pm as the heavy rainfall moved out of the area, and no flood reports were associated with the storm.<\/p>\n

More notably, heavy rainfall also occurred just to the northwest of Nederland in the mid-afternoon, where a high elevation SNOTEL gage recorded a total of 1.2 inches of rainfall over the Indian Peaks. In the Allenspark area, 0.65 inches and 0.75 inches of precipitation were recorded by personal weather stations. A notable response to this heavy rainfall was observed by the South Saint Vrain river gage near Ward, which measured a noteworthy spike in streamflow at 11pm last night, as shown by the streamflow graph below. This peak in river flow even exceeded its snowmelt peak from earlier this week!<\/p>\n

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There was some disagreement in QPE<\/span> estimations, but it appears possible that up to 1.5 to 2 inches of QPE<\/span> occurred over a 2 to 3 hour period in the vicinity of the heaviest rainfall northwest of Nederland yesterday afternoon. Elsewhere across the western half of the state, QPE<\/span> was more along the 0.25 to 0.5 inch range. Additionally, several wind reports were made across western Colorado in the afternoon. The highest wind gusts of 60mph and 66mph were recorded in Pitkin County at 1:49pm and 2:49pm, respectively.<\/p>\n

Click Here For Map Overview<\/h4>
\nThe map below shows radar-estimated, rainfall gage-adjusted Quantitative Precipitation Estimates (QPE<\/span>) across Colorado. The map is updated daily during the operational season (May 1 – 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 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.
<\/div>\n

\"\"<\/a><\/p>","protected":false},"excerpt":{"rendered":"

Issue Date: Saturday, June 18th, 2022 Issue Time: 9:45 AM MDT Summary: A steady plume of northward-moving subtropical moisture brought numerous<\/span> rain showers and thunderstorms across western Colorado yesterday afternoon through the overnight hours. NWS<\/span> Pueblo issued a late-morning flash flood<\/span> warning<\/span> over the Spring Creek burn scar, and their 12:01pm update estimated rain rates […]<\/p>","protected":false},"author":15,"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\/17707"}],"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\/15"}],"replies":[{"embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=17707"}],"version-history":[{"count":22,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/17707\/revisions"}],"predecessor-version":[{"id":17748,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=\/wp\/v2\/posts\/17707\/revisions\/17748"}],"wp:attachment":[{"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=17707"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=17707"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/archive-coftb.dewberryanalytics.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=17707"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}