Thunderstorms will become even more widespread today!
Showers & t-storms will develop by late morning into early afternoon and become more likely as the day progresses. In addition to the south, moisture moving farther north will bring active weather to Central Utah as well. Storms could bring heavy rain and lead to isolated flash flooding in rain sensitive areas like slot canyons, normally dry washes, & burn scars (the typical trouble spots).
If you have outdoor plans, keep an eye on the sky. It's an even better idea to stay out of those areas until it dries out this weekend. It's going to get a lot warmer by then with temps climbing near 90 along the Wasatch Front and near 100 in the far south!
SALT LAKE CITY
Thursday: Partly cloudy. Highs: Near 80.
Thursday Night: Partly cloudy. Lows: Near 60.
ST. GEORGE
Thursday: Partly cloudy with showers & t-storms likely. Highs: Near 90.
Thursday Night: Partly cloudy. Lows: Upper 60s.