Park City

At 553 PM MDT, Doppler radar was tracking a strong thunderstorm near Utah Lake, or 12 miles northwest of Payson, moving northeast at 25 mph. HAZARD...Wind gusts up to 50 mph and penny size hail. SOURCE...Radar indicated. IMPACT...Gusty winds could knock down tree limbs and blow around unsecured objects. Minor damage to outdoor objects is possible. Locations impacted include... Provo, Payson, Orem, Spanish Fork, Pleasant Grove, Springville, American Fork, Eagle Mountain, Lindon, Mapleton, Salem, Vineyard, Brigham Young University, Palmyra, Benjamin, Lake Shore, Utah Lake, West Mountain, Saratoga Springs, and Genola. This storm will be capable of producing strong gusty winds on Utah Lake. This will lead to a sudden increase in waves and very choppy waters which will result in hazardous boating conditions. Boaters are urged to seek safe harbor if possible. This includes the following highways... Interstate 15 between mile markers 250 and 275. US Route 6 between mile markers 174 and 180.