{"id":514,"date":"2015-05-21T15:17:02","date_gmt":"2015-05-21T21:17:02","guid":{"rendered":"https:\/\/www.coloradofloodthreat.com\/?p=514"},"modified":"2015-05-21T15:17:02","modified_gmt":"2015-05-21T21:17:02","slug":"fto-clouds-and-rain-to-battle-the-sun-over-memorial-day-weekend-active-pattern-continues-thereafter","status":"publish","type":"post","link":"https:\/\/archive-coftb.dewberryanalytics.com\/?p=514","title":{"rendered":"FTO: Clouds And Rain To Battle The Sun Over Memorial Day Weekend; Active Pattern Continues Thereafter"},"content":{"rendered":"

Issue Date: 5\/21\/2015
\nIssue Time: 3:10 PM<\/p>\n

\"threat_timeline_20150521\"<\/a><\/p>\n

The unprecedented wet May conditions continue over most of the state. East of the Divide<\/span>, soils continue to stay saturated with May precipitation already running at up to 5-fold above average! The lack of sunshine has kept temperatures unseasonably cold with most locations running 4-6F below average. West of the Divide<\/span>, late season snow and rains are doing wonders to help the drought situation. Most of Colorado may be drought free should the continuous rains keep falling over the next few weeks. And it appears they will.<\/p>\n

The active feed of subtropical disturbances will continue. As shown by the water vapor image, below, a “split-flow” pattern continues to be active off the west coast of North America. In such a pattern, a blocking high sets up over Northwest Canada (or sometimes south of Alaska) and diverts the main jet stream<\/span> well to the north. Meanwhile, a separate subtropical jet stream<\/span> separates from the main jet stream<\/span> and produces disturbances that frequently cause rainfall across the southwest U.S., including Colorado.<\/p>\n

\"watervapor_20150521\"<\/a><\/p>\n

Over the next two weeks, we continue to foresee this pattern creating many disturbances that will move across our state. Overall, the pattern will be particularly busy through Memorial Day weekend (Events #1 and 2 on the water vapor image), followed by 3-5 days of overall quieter weather. However, even during the “quieter” weather period, there will likely be scattered<\/span> thunderstorm activity especially over the higher terrain. We do not expect this activity to add up to much rainfall. Then, a re-invigoration of active weather (Event #3) will occur from a disturbance that is currently over the western Pacific Ocean.<\/p>\n

The three events that we have identified are:<\/p>\n