This is an archived article that was published on sltrib.com in 2015, and information in the article may be outdated. It is provided only for personal research purposes and may not be reprinted.

Violent weather was in the forecast Wednesday afternoon and evening for northern and central Utah, with a tornado warning over one county and, in another, thunderstorms producing hail as big as a half-dollar.

Uintah County was under a tornado warning as of 4:45 p.m., with rotation about 50 miles south of Vernal, according to National Weather Service reports. Meanwhile, thunderstorms were developing over a larger swath of Utah, with hail more than an inch in diameter reported in the Duchesne County town of Myton.

"We have thunderstorms that have developed across northern and central Utah, capable of small hail, gusty winds, and heavy rainfall. Some have been severe," said NWS meteorologist Christine Kruse.

Meanwhile, the forecast called for rain showers and isolated thunderstorms to push Utah over the midweek hump before the state gradually dries out ahead of a warm weekend.

Thursday was to bring morning showers along the Wasatch Front that will give way to partly cloudy skies after sunset. High temperatures Thursday were to be in the mid- to upper-60s, same as Wednesday, but on Friday the precipitation should be gone and daytime highs will climb into the 70s.

By Saturday, the mercury will hover near 80 degrees in the Salt Lake and Tooele valleys.

Farther south, in Utah's Dixie, temperatures Thursday were to approach 90, up about 5 degrees from Wednesday's highs under partly cloudy skies fading to clear and sunny.

The Utah Division of Air Quality rated all monitoring stations as "green," or healthy, through week's end.

The Intermountain Allergy & Asthma website reported only grass and mold at "high" levels on its pollen index as of Wednesday; all other allergens were "low."

For more detailed forecast breakdowns, visit the Tribune's weather page at http://www.sltrib.com/weather/.

Twitter: @remims