640
FNUS75 KSLC 052154
FWSSLC

Spot Forecast for Little Twist WF...USDA Forest Service
National Weather Service Salt Lake City UT
354 PM MDT Fri Jul 5 2024

Forecast is based on forecast start time of 0700 MDT on July 06.
If conditions become unrepresentative...contact the National Weather
Service.

.DISCUSSION...A warming trend will continue to spread over the fire area
while maintaining extremely dry conditions. Daytime relative
humidity values will continue to bottom out in the upper-teens
with overnight recoveries only maxing out in the mid-teens to
mid-20 percent range on Saturday. Winds will be terrain driven on
slopes and drainages, with ridges seeing predominantly
northwesterly flow.

Warming continues into Sunday, with temperatures warming by
another 1-3 degrees. Winds are expected to increase out of the
northwest, with ridges expected to gust to around 30 mph during
the afternoon hours. Lower elevation slopes and drainages will see
predominantly northwest winds, but direction may become variable
on protected southerly aspects. Afternoon relative humidity will
remain largely unchanged, with only marginal improvements in
overnight humidity recoveries (increasing by 5-10%).

.SATURDAY...

Sky/weather.........Sunny (0-5 percent cloud cover)
CWR.................0 percent.
Chance of pcpn......0 percent.
LAL.................1.
Max temperature.....Lower Elevations: 77-83 degrees.
Upper Elevations: 67-73 degrees.

Min humidity........Lower Elevations: 7-10 percent.
Upper Elevations: 9-12 percent.

Wind (20 ft)........Slopes/ Drainages: Upslope/ upvalley 5-8 mph with gusts around 15 mph
on exposed slopes and aligned drainages.
Ridges: North to northwest 10-15 mph with gusts around 20 mph.
Transport winds.....North 15 to 20 mph.
Haines Index........5.
Mixing Height.......6,000-7,500ft

.SATURDAY NIGHT...

Sky/weather.........Mostly clear (5-15 percent cloud cover).
CWR.................0 percent.
Chance of pcpn......0 percent.
LAL.................1.
Min temperature.....55-60 degrees.
Max humidity........15-20 percent.
Wind (20 ft)........Downslope/ downvalley 4-8 mph.
Transport winds.....Northwest around 10-15 mph with gusts to around 20 mph at the
highest elevations.
Haines Index........6.

.SUNDAY...

Sky/weather.........Mostly sunny (5-10 percent cloud cover).
CWR.................0 percent.
Chance of pcpn......0 percent.
LAL.................1.
Max temperature.....Lower Elevations: 80-85 degrees.
Upper Elevations: 70-74 degrees.

Min humidity........Lower Elevations: 9-10 percent.
Upper Elevations: 10-15 percent.

Wind (20 ft)........Slopes/ Drainages: Northwest 7-12 mph with gusts up to 20-25 mph
on higher exposure slopes and aligned drainages. Protected slopes
may experience periods of variable flow direction.
Ridges: Northwest 15-25 mph with gusts to around 30 mph.
Transport winds.....Northwest around 20-30 mph.
Haines Index........6.
Mixing Height.......8,500-11,000ft

$$
Forecaster...Webber
Requested by...Cory Norman
Type of request...WILDFIRE
.TAG 2417335.6/SLC
.DELDT 07/05/24
.FormatterVersion 2.0.0
.EMAIL samuel.norman@usda.gov