512
FNUS73 KUNR 232259
FWSUNR

Spot Forecast for Schenk Canyon Rx...USFS
National Weather Service Rapid City SD
459 PM MDT Tue Apr 23 2024

Forecast is based on ignition time of 1700 MDT on April 23.
If conditions become unrepresentative, contact the National Weather
Service.

.DISCUSSION...Southeasterly winds will continue through the evening hours
with gusts slowly diminishing with loss of surface heating after 2000.
Expect east-southeasterly winds to continue through the overnight hours.
A fairly shallow inversion will remain in place tonight with winds
15-20 mph at the top of the inversion (~500-750 feet AGL); winds around
10 mph at the surface. Overnight RH recovery will be modest (~55-60%).

Tomorrow will be around 5-8 degrees warmer than today with daytime minimum
RH falling to around 20% by 1500. Winds will begin out of the southeast at
daybreak, and shift to south then quickly southwest after 1100-1200 as
peak mixing begins. Sustained winds will be around 10 mph with gusts
hitting 20 mph throughout the afternoon. High level clouds will increase
during the afternoon, although sky cover will remain under 40%.

.REST OF TODAY...

Sky/weather.........Sunny.
Max temperature.....Around 60.
Min humidity........18-20 percent.
Wind (20 ft)........East-southeast winds around 10 mph gusts to 15-20 mph.
CWR.................0 percent.
LAL.................1.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.
Mixing height.......7000 to 7500 ft agl.
Transport winds.....West around 10 mph.
Smoke dispersal.....Good.

.TONIGHT...

Sky/weather.........Partly cloudy (30-40 percent).
Min temperature.....Around 40.
Max humidity........55-60 percent.
Wind (20 ft)........East winds 6-12 mph, gusts 15-18 mph. Gust potential
                    diminishing after 2000-2200 hours.
CWR.................0 percent.
LAL.................1.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.
Mixing height.......500 to 1000 ft agl.
Transport winds.....Southeast 15 to 20 mph.
Smoke dispersal.....Poor.

.WEDNESDAY...

Sky/weather.........Mostly sunny (30-40 percent).
Max temperature.....Around 68.
Min humidity........20-25 percent.
Wind (20 ft)........Southeast winds 8 to 12 mph shifting to the
                    southwest after 1100-1200. Gusts 15-20 mph.
CWR.................0 percent.
LAL.................1.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Mixing height.......6800 to 7300 ft agl.
Transport winds.....Southeast around 20 mph shifting to the
                    southwest in the afternoon.
Smoke dispersal.....Good.

$$
Forecaster...SE
Requested by...Josh Behlings
Type of request...PRESCRIBED
.TAG 2411916.1/UNR
.DELDT 04/23/24
.FormatterVersion 2.0.0
.EMAIL Joshua.behlings@usda.gov