June 13, 2017
- While the vast majority of SNOTEL sites in the region have melted out, the rest are generally recording well-above-normal SWE for June 12. At these high and wet sites, the remaining snow is now melting at typical late-season rates of 1-2" of SWE per day.
- With the heavy runoff, there has been widespread minor flooding, but moderate and major flooding has been confined to only a few reaches, including the Wind River and the Green River above Fontanelle Reservoir. At many gages, flows have just hit their seasonal peak and will be coming back down.
- Most reservoirs in Utah, Wyoming, and Colorado had above-average storage for the end of May. As of June 11, storage in Lake Powell was 14.40 MAF, compared to 12.73 MAF on the same date in 2016.
- May precipitation was above-normal for most of Colorado, far southern Utah, and southeastern Wyoming, but below normal for the bulk of the region, especially in central Utah. Statewide, Colorado was by far the wettest, in the 86th percentile for precipitation, with Wyoming in the 37th percentile, and Utah in the 20th percentile.
- Since early May there has been removal of drought conditions in northeastern Colorado, but some degradation in central Utah. Overall, the region remains remarkably drought-free, with no D1 conditions or worse.