396
FNUS75 KSLC 071048
FWSSLC

Spot Forecast for Silver King...Fishlake National Forest
National Weather Service Salt Lake City UT
448 AM MDT Sun Jul 7 2024

Forecast is based on forecast start time of 0600 MDT on July 07.
If conditions become unrepresentative...contact the National Weather
Service.

...RED FLAG WARNING IN EFFECT UNTIL 9 PM MDT THIS EVENING FOR GUSTY
NORTHWEST WINDS AND VERY LOW RELATIVE HUMIDITY...

.DISCUSSION...A very dry airmass is in place across the fire area
this morning. Poor overnight RH recovery near 20% will allow values
to fall below 15% by late morning. Northwest winds across the area
this morning will strengthen by early afternoon, with the strongest
gusts along exposed upper ridgelines and through wind-aligned
drainages. This combination of gusty northwest winds and very low
RH will result in Red Flag conditions throughout the afternoon and
early evening. Winds will trend more northerly and diminish in speed
after sunset, with slightly improved but still very marginal RH
recovery overnight. Winds Monday will remain north to northwest but
trend substantially lighter, while the airmass remains warm and very
dry.

.TODAY...

Sky/weather.........Mostly sunny (5-15 percent cloud cover) with a
                    few passing high clouds.
CWR.................0 percent.
Chance of pcpn......0 percent.
LAL.................1.
Max temperature.....Lower slopes/canyon floors...78-81
                    Upper slopes/ridgelines......65-70

Min humidity........Lower/slopes/canyon floors...8-12 percent
                    Upper slopes/ridgelines......11-14 percent

Wind (20 ft)........Lower slopes/canyon floors...Northwest 4-8 mph
                    with gusts 10-15 mph, increasing to 8-12 mph
                    with gusts 20-25 after 1200.

                    Upper slopes/ridgelines...Northwest 6-10 mph
                    with gusts 15-20 mph increasing to 15-20 mph
                    with gusts 30-35 mph after 1200.

Transport winds.....Northwest 25 to 30 mph.
Mixing Height.......8000-9000 ft AGL
Haines Index........6.

.TONIGHT...

Sky/weather.........Clear (5-15 percent cloud cover).
CWR.................0 percent.
Chance of pcpn......0 percent.
LAL.................1.
Min temperatures....47-52.
Max humidity........25-30 percent.

Wind (20 ft)........Lower slopes/canyon floors...North to northwest
                    6-10 mph in the evening becoming downslope and
                    down-drainage 4-8 mph after 2200.

                    Upper slopes/ridgelines...North to northwest
                    15-20 mph with gusts near 30 mph decreasing to
                    10-15 mph overnight.

Transport winds.....Northwest around 30 mph becoming north around
                    10 mph overnight.

.MONDAY...

Sky/weather.........Sunny (0-10 percent cloud cover).
CWR.................0 percent.
Chance of pcpn......0 percent.
LAL.................1.
Max temperature.....Lower slopes/canyon floors...79-82
                    Upper slopes/ridgelines......66-71

Min humidity........10-15 percent across all elevations.

Wind (20 ft)........Lower slopes/canyon floors...North 5-9 mph
                    with gusts 15-18 mph through aligned drainages,
                    with upslope and up-canyon 4-8 mph with gusts
                    10-12 mph elsewhere.

                    Upper slopes/ridgelines...Northeast 3-8 mph
                    becoming north-northwest 5-10 mph with gusts
                    up to 20 mph after 1200.

Transport winds.....North 8 to 14 mph.
Mixing Height.......7500-8500 AGL.
Haines Index........5.

$$
Forecaster...Seaman
Requested by...Q Thatcher
Type of request...WILDFIRE
.TAG 2417526.3/SLC
.DELDT 07/07/24
.FormatterVersion 2.0.0
.EMAIL utrfc@firenet.gov