— LOW<\/strong> flood threat for Front Range, Palmer Ridge, Southeast Mountains, Raton Ridge and Southeast Plains<\/em><\/p>\n
This morning’s water vapor imagery, below, continues to show Colorado positioned under a ridge axis that extends to the southwest. Although by itself this pattern is not particularly conducive to heavy rainfall, it becomes significantly more so when ample moisture is available. Such has been the case over the past 72 hours with precipitable water<\/span> (PW<\/span>) values exceeding 0.7 inches east of the Continental Divide<\/span>. This morning’s surface analysis shows that surface dew point<\/span> temperatures are now approaching 60 F across parts of northeast Colorado. Meanwhile, PWs range from 0.7 to just under 1 inch and are expected to gradually increase through the afternoon as moist easterly flow is advected upslope in the lowest 3-5K feet of the atmosphere. Another feature noted on water vapor imagery is the presence of a weak disturbance centered over the CO\/WY border. This will move southeastward and sustain higher mid-level shear<\/span> (surface-500mb exceeding 30 kts) than has been observed in the past few days, which is more conducive for maintaining an updraft and thus, heavy rainfall. Acting against the heavy rainfall threat is the large-scale subsidence from the ridge, which will continue to limit heavy rainfall coverage.<\/p>\n In all, we expect a similar evolution in today’s weather as the past 2-3 days. Higher elevation storms will develop east of the Continental Divide<\/span> shortly before noon, then expand south and east into the Plains. A broad Low flood threat has been issued for most of eastern Colorado for the risk of isolated<\/span> flash flooding<\/span>. However, a Moderate threat has been posted for parts of northeast Colorado due to the region of higher shear<\/span> that will support longer-lived storms and potentially storm training<\/span>. Hail up to 1.75 inches is possible with these strongest cells. For more information on today’s flood threat, see the map below (hover over threat areas for more details). For Zone-Specific forecasts, scroll below the map.<\/p>\n![\"\"](\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2017\/06\/wv_markup-5.png\")
<\/a><\/p>\nToday’s Flood Threat Map<\/strong><\/h3>\n