FNUS75 KSLC 210525

FWSSLC



Spot Forecast for Bonneville...UT-UWF

National Weather Service Salt Lake City UT

1125 PM MDT Sat Jun 20 2026



Forecast is based on forecast start time of 0500 MDT on June 21. 

If conditions become unrepresentative...contact the National Weather

Service.



.DISCUSSION...North to northeast winds will continue through 

the overnight hours. For the first operational period, expect 

north to northwest winds to shift to west to northwest between 

0900-1000. Any threat of high-based showers will occur in the next

operational period, with a 15 percent chance between 2100-0300. 

Any high-based showers will bring the threat of gusty and erratic 

microburst winds in excess of 30 mph. 



.TONIGHT...



Sky/weather.........Mostly clear (0-10 percent cloud cover). 

CWR.................0 percent. 

Chance of pcpn......5 percent. 

Chance of lightning.0 percent. 

Min temperature.....Around 60. 

Max humidity........49-51 percent. 

Wind (20 ft)........North to northeast winds 2-7 mph, gusts to 15 mph. 

Mixing height.......500 ft AGL. 

Transport winds.....North around 9 mph. 



.SUNDAY...



Sky/weather.........Sunny (0-10 percent cloud cover). 

CWR.................0 percent. 

Chance of pcpn......0 percent. 

Chance of lightning.0 percent. 

Max temperature.....82-84. 

Min humidity........19-21 percent. 

Wind (20 ft)........North to northeast winds 2-7 mph becoming west to 

                    northwest 5-10 mph between 0900-1000. 

Mixing height.......8600 ft AGL (60-70th Percentile). 

Transport winds.....Northwest 9 to 14 mph. 



.SUNDAY NIGHT...



Sky/weather.........Partly cloudy (30-40 percent cloud cover).

                    Isolated showers 2100-0300.

CWR.................0 percent. 

Chance of pcpn......15 percent. 

Chance of lightning.5 percent. 

Min temperature.....62-64. 

Max humidity........35-37 percent. 

Wind (20 ft)........Northwest winds 5-10 mph becoming east to 

                    northeast 3-7 mph after 2100. Winds may become

                    gusty and erratic near high-based showers 2100-0300.

Mixing height.......500 ft AGL. 

Transport winds.....West around 13 mph becoming east around 12 mph 

                    overnight. 



.MONDAY...



Sky/weather.........Mostly sunny (15-25 percent cloud cover). 

CWR.................0 percent. 

Chance of pcpn......0 percent. 

Chance of lightning.0 percent. 

Max temperature.....85-87. 

Min humidity........18-20 percent. 

Wind (20 ft)........East to northeast winds 3-7 mph becoming northwest 5-10 mph 

                    after 100. 

Mixing height.......9400 ft AGL (60-70th Percentile). 

Transport winds.....East around 9 mph becoming west in the 

                    afternoon. 



$$

Forecaster...Kruse

Requested by...Ryan LaFontaine

Type of request...WILDFIRE

.TAG 2615898.0/SLC

.DELDT 06/21/26

.FormatterVersion 2.0.0

.EMAIL utnuc@firenet.gov,ryanlafontaine@utah.gov