There’s a red flag warning in southern Utah — and a slight chance of snow in Salt Lake City

Temperatures will drop below normal in northern Utah on Thursday.

(National Weather Service) There’s a red flag warning in southwestern Utah on Monday and Tuesday.

The National Weather Service has issued a red flag warning for part of southwest Utah from noon Monday until 10 pm Tuesday. Winds and extremely low humidity are expected to create critical fire conditions. “Any new fire starts could spread rapidly,” according to the weather service.

The affected area includes Cedar City, Bryce Canyon National Park and Escalante.

Winds of 10-20 mph, with gusts up to 30 mph, are expected both Monday and Tuesday afternoon, according to the National Weather Service. Humidity will fall to 5-10% on Monday afternoon and, after a “marginal recovery” to 25-40% on Monday night, the forecast calls for 10-15% humidity on Tuesday afternoon.

Isolated thunderstorms and “localized, brief critical fire weather conditions” are possible across eastern Utah beginning Monday night and continuing through Sunday. The affected area includes Vernal, Moab, Monticello, Blanding and Bluff.

(National Weather Service) There could be thunderstorms in northern Utah on Monday afternoon and evening.

Across northern Utah, there’s a chance of thunderstorms on Monday afternoon — a 21% chance in Salt Lake City, Ogden and Brigham City; 22% in Logans; 19% in Toole; 13% in Park City; 17% in Wendover; and 6% in Provo. The storms could bring microburst winds of more than 45 mph, lightning and small hail.

In Salt Lake City, the National Weather Service is forecasting highs in the mid-80s on Monday and the mid- to upper 70s on Tuesday and Wednesday, with overnight lows near 50 — just about normal for this time of year. A cold front is expected to move in and drop temperatures to the mid-60s on Thursday and the lower 60s on Friday. The overnight low on Thursday is just 38, and there’s a slight chance of rain mixed with snow.

(The normal low for May 19 is 51.)

Temperatures will rise to the low 60s on Saturday and the upper 60s on Sunday.

The forecast for southern Utah is for sunny skies and mostly hotter than normal (85-88) for this time of year — the mid- to upper 90s through Thursday; the mid-80s on Friday; and back up into the 90s on Saturday and Sunday.

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