![\"06012015_ThreatTimeline\"](\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2015\/06\/06012015_ThreatTimeline.png\")
<\/a><\/p>\nThe transition to the summer season here in Colorado marks a particularly challenging time for forecasters. As low-pressure systems become fewer and further in between as compared to winter and spring, much of the forecasting reduces to a smaller, more individualized scale. The hot southwest United States ridge becomes a semi-permanent feature, with smaller disturbances attempting to break into that ridge. Only those disturbances, on average, will bring about an organized flood threat. During this 15 day period, there is only one such organized threat in which this FTO will be focused upon.<\/p>\n
- Event #1: Thursday (06-04-2015) through Tuesday (06-09-2015)\n
- The upper-level trough<\/span> (marked by the purple line) will deepen across the West Coast, increasing southwesterly flow across the state. While there is a lot of dry air out over the SW United States and nearby Pacific Ocean, one feature will attempt to allow deeper moisture to flow over Colorado. This feature is known as Hurricane Andres, and is circled in red. If, and only if, the upper-level trough<\/span> can deepen and tap into the tropical moisture associated with Hurricane Andres, then an organized flood threat will develop. If not, dry, mid-level air will be driven over Colorado, reducing the flood threat to an individualized storm basis.<\/li>\n<\/ul><\/li>\n<\/ul>