108
FNUS75 KSLC 271204
FWSSLC
SPOT FORECAST FOR GRASS VALLEY PILES RX...USFS
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
504 AM MST FRI FEB 27 2026
FORECAST IS BASED ON IGNITION TIME OF 0600 MST ON FEBRUARY 27.
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
DRY AND STABLE CONDITIONS WILL PERSIST THROUGH SATURDAY
AS HIGH PRESSURE REMAINS IN PLACE. THIS WILL RESULT IN MOSTLY CLEAR SKIES
AND LIGHT DIURNALLY DRIVEN WINDS. WINDS ALOFT WILL BE WEAK LEADING TO POOR
VENTILATION. BETTER VENTILATION WILL START ON SUNDAY AND CONTINUE THROUGH
EARLY NEXT WEEK AS THE RIDGE FLATTENS AND MORE ACTIVE WEATHER MOVES INTO
THE GREAT BASIN.
TODAY
SKY/WEATHER.........MOSTLY SUNNY (20-30 PERCENT CLOUD COVER).
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....63-65.
MIN HUMIDITY........22-24 PERCENT.
WIND (20 FT)........NORTHEAST WINDS 3-5 MPH BECOMING NORTHWEST 5-8
MPH LATE IN THE MORNING.
MIXING HEIGHT.......2200 FT AGL.
CLIMATOLOGY......20-30TH PERCENTILE.
TRANSPORT WINDS.....NORTHEAST AROUND 10 MPH.
CLEARING INDEX......220.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT CLOUD COVER).
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MIN TEMPERATURE.....41-43.
MAX HUMIDITY........52-54 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5-7 MPH BECOMING EAST 3-5 MPH
EARLY IN THE EVENING.
MIXING HEIGHT.......0 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 10 MPH BECOMING NORTHEAST
AROUND 7 MPH OVERNIGHT.
SATURDAY
SKY/WEATHER.........PARTLY CLOUDY (55-65 PERCENT CLOUD COVER).
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF LIGHTNING.0 PERCENT.
MAX TEMPERATURE.....63-65.
MIN HUMIDITY........26-28 PERCENT.
WIND (20 FT)........EAST WINDS 3-5 MPH BECOMING SOUTHWEST
3-8 MPH LATE IN THE MORNING.
MIXING HEIGHT.......3500 FT AGL.
CLIMATOLOGY......20-30TH PERCENTILE.
TRANSPORT WINDS.....NORTHEAST AROUND 7 MPH BECOMING SOUTHWEST
AROUND 14 MPH IN THE AFTERNOON.
CLEARING INDEX......430.
FORECASTER...MAHAN
REQUESTED BY...GREEN
TYPE OF REQUEST...PRESCRIBED
.TAG 2604025.1/SLC
.DELDT 02/27/26
.FORMATTERVERSION 2.0.0
.EMAIL THOMAS.J.GREEN@USDA.GOV
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