|Looking west from the University of Utah Campus at about 7:15 AM this morning|
The weather over the past 24 hours has been quite remarkable if you know where to look. While it was quite mild across much of northern Utah during the holiday weekend, a thin lens of cold air remained over the relatively cold waters of the Great Salt Lake. Our Hat Island observing site, for example, hasn't eclipsed 55ºF over the past five days.
Fortunately, the south winds saved the "day", blowing the lake breeze north and causing temperatures to rise rapidly around 8 PM.
Moving on to the weather this morning, we are still in the warm southerlies with some wind-borne dust over the western Salt Lake Valley. However, cooler air remains over the Great Salt Lake with northwesterly flow developing over northwest Utah.
The HRRR brings the surface front into the northern Salt Lake Valley at 1900 UTC (1 PM MST) this afternoon. It will be a dry frontal passage, with the precipitation trailing the surface front.
We will be "storm chasing" with the DOW, which we plan to deploy just south of Stansbury Island to examine the front penetrating into the Tooele Valley and across the Great Salt Lake. Although a dry frontal passage, we're hoping there is enough dust in the air to be able to examine some fine-scale aspects of the frontal passage. We'll then work on whatever precipitation comes through, focusing on the frontal-band interaction with the Stansbury and Oquirrh Mountains.
For skiers, this looks like a pretty pathetic event. The models have the band fall apart as it moves in. Snowshowers are possible, but it won't add up to much, as we discussed over the weekend. Sad!