\n— LOW flood threat today for parts of Grand Valley (landslide possible)<\/em><\/p>\n
In today’s water vapor imagery, shown below, we see the remains of yesterday’s low pressure system that generated all kinds of active weather across Colorado (check out our Storm Total Precipitation discussion). As is often the case with the day after the storm, a downtick in rainfall activity is expected today. However, some active will still remain across parts of the state. Let’s discuss the details: The details above warrant a low flood threat for the far eastern part of the state where hourly rainfalls could exceed 1.5 inches per hour, with 3-hour totals approaching 2.4 inches. The rest of the state is not expected to experience flooding.<\/p>\n We also want to point out that a Flash Flood<\/span> Watch<\/span> has been issued by the Grand Junction NWS<\/span> for the Salt Creek landslide area (Mesa County). We urge everyone in that area to keep up to date with local officials or the NWS<\/span>.<\/p>\n![\"wv_markup\"](\"https:\/\/archive-coftb.dewberryanalytics.com\/wp-content\/uploads\/2016\/05\/wv_markup1.png\")
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\n• the atmosphere’s dynamics are weakening with the departing and weakening low pressure; mid-level height rises of 30 – 60 meters are expected throughout the days favoring weak subsidence
\n• atmospheric instability will be limited for most of the state with less than 750 J\/kg of instability for most; the only exception is the far eastern part of the state where instabilities up to 1,500 J\/kg will be possible
\n• precipitable water<\/span> values are in line with their seasonal averages, though overall drying is expected for the majority of the state (again with the exception of the far east)
\n• storm motions will be in the 30+ mph range which will limit the amount of time a location experiences heavy rainfall; again, the exception is the far east where southeasterly boundary layer<\/span> winds will lower storm motions
\n• Yesterday’s rainfall in the South Platte basin will slowly drain into the river, but is not expected to raise river levels above the flood stage
\n• With the cool temperatures, snow continues to melt in an orderly fashion and is not expected to induce flooding at high-elevation streams.<\/p>\nToday’s Flood Threat Map<\/strong><\/h3>\n