Showers are expected to continue across portions of northern Utah and southwest Wyoming as a broad low shifts into the region, according to a National Weather Service Salt Lake City report. Unsettled weather and below-normal temperatures are forecast to persist through the upcoming week.
A large scale trough pivoting into northern Utah through the Great Basin is contributing to scattered shower activity. While some embedded thunderstorms may develop during the afternoon and early evening hours, the activity is not anticipated to be as impactful as in prior days. Afternoon highs are expected to be 5 to 10 degrees below seasonal normal, creating a chilly day across the area.
Weather conditions are expected to shift on Saturday as a portion of the trough becomes cutoff from the mean flow and sinks through Utah into the Desert Southwest. This will allow for showers and a few thunderstorms to redevelop across southeast Utah by Saturday morning. These unsettled conditions are expected to spread to the eastern half of Utah on Sunday, with activity waning late Sunday evening as the low departs eastward.
Monday is favored to be a drier day due to a brief shortwave ridge shifting overhead, which may allow temperatures to rebound to near seasonal normals. Looking further into the week, models show uncertainty regarding the exact pattern evolution, though there is agreement regarding another trough brushing the region. The best agreement for precipitation is noted for the Tuesday to Wednesday time frame, with the best chance for rain occurring across northern Utah and southwest Wyoming.
In the aviation forecast, showers with an occasional rumble of thunder, occurring with a 15% chance or less, will continue developing across much of northern Utah. These are forecast to last until midnight. Additionally, gusts to around 20 knots are possible out of the south across most northern Utah sites ahead of a cold front.
