142
FNUS73 KUNR 102128
FWSUNR

Spot Forecast for Needles...Pine Ridge Agency
National Weather Service Rapid City SD
328 PM MDT Thu Sep 10 2026

Forecast is based on forecast start time of 0600 MDT on September 11.
If conditions become unrepresentative, contact the National Weather
Service.

...RED FLAG WARNING IN EFFECT FROM 11 AM TO 7 PM MDT FRIDAY...

.DISCUSSION...Critical fire weather is expected Friday for the
fire spot location resulting in a Red Flag Warning being issued
from 11 AM to 7 PM MDT. Expect highs around 90 degrees with
minimum relative humidity values dropping to around 17 percent and
southwest winds will slowly shift to the west, then northwest,
gusting to around 30 to 35 MPH throughout the day/evening. Winds
will continue to shift towards the north, then northeast during
the overnight hours, gusting to around 20 to 30 MPH through
midnight before decreasing into Saturday morning. Smoke dispersal
will be good increasing to excellent in the afternoon, then
dropping to poor Friday night. Relative humidity recovery will be
good to excellent Friday night into Saturday morning.

Saturday will see cooler temperatures in the upper 70s with minimum
relative humidity values dropping to around 27 percent. Lighter
northeast winds around 10 mph will shift to the east with gusts
to around 23 mph in the afternoon.

There will be a chance for showers/thunderstorms late Friday
evening through Saturday morning, however, the chance for a
wetting rain will remain low. Saturday evening through Monday will
be the next chance for precipitation.


.FRIDAY...

Sky/weather.........Mostly cloudy (70-80 percent) then becoming
                    mostly sunny (20-30 percent).
Max temperature.....Around 90.
Min humidity........17 percent.
Wind (20 ft)........Southwest winds around 25 mph shifting to the
                    northwest late in the afternoon. Gusts up to 36
                    mph.
CWR.................0 percent.
Mixing height.......9200 to 9700 ft agl.
Transport winds.....West 30 to 35 mph shifting to the northwest
                    late in the afternoon.
Smoke dispersal.....Good increasing to excellent in the afternoon,
                    then decreasing to very good late in the
                    afternoon.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........71  74  26  22  12  18  12  24  21  27  40  39
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............66  67  71  75  79  82  85  87  87  89  88  86
RH..............27  26  25  23  20  18  17  17  17  17  17  18
20 FT wind dir..SW  SW  SW  W   W   W   W   W   W   W   NW  NW
20 FT wind spd..22  23  23  23  23  23  23  24  24  23  23  22
20 FT wind gust.29  31  32  32  33  35  35  36  36  35  33  32
Mix hgt (kft)...0.5 0.7 0.9 1.5 1.9 3.0 5.7 7.1 8.4 9.7 7.4 5.0
Transp wind dir.SW  SW  W   W   W   W   W   W   W   W   NW  N
Transp wind spd.30  32  32  33  33  35  35  35  35  35  33  32

.FRIDAY NIGHT...

Sky/weather.........Partly cloudy (25-35 percent).
Min temperature.....Around 50.
Max humidity........83 percent.
Wind (20 ft)........Northeast winds 15 to 25 mph with gusts to
                    around 30 mph decreasing to around 10 mph with
                    gusts to around 17 mph after 3 am.
CWR.................0 percent.
Mixing height.......600 to 1100 ft agl.
Transport winds.....Northeast 25 to 30 mph.
Smoke dispersal.....Poor.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........31  8   28  42  36  21  40  50  36  43  23  18
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............80  75  71  68  65  62  60  57  55  54  52  51
RH..............21  28  35  40  48  56  60  67  69  70  77  80
20 FT wind dir..N   N   NE  NE  NE  NE  NE  NE  NE  NE  NE  NE
20 FT wind spd..21  20  20  18  17  15  14  13  12  10  8   7
20 FT wind gust.30  29  28  26  24  22  20  18  18  17  14  12
Mix hgt (kft)...2.7 2.0 1.3 0.6 0.7 0.7 0.8 0.9 1.0 1.1 1.1 1.2
Transp wind dir.N   N   NE  NE  NE  NE  NE  NE  NE  NE  NE  NE
Transp wind spd.30  29  28  26  25  24  23  23  23  23  22  21

.SATURDAY...

Sky/weather.........Mostly sunny (25-35 percent).
Max temperature.....Around 77.
Min humidity........27 percent.
Wind (20 ft)........Northeast winds around 10 mph shifting to the
                    east with gusts to around 23 mph in the
                    afternoon.
CWR.................0 percent.
Mixing height.......4600 to 5100 ft agl.
Transport winds.....Northeast 15 to 20 mph shifting to the
                    southeast 20 to 25 mph late in the afternoon.
Smoke dispersal.....Good.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........29  22  18  12  12  12  12  17  23  28  36  45
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............50  50  53  56  61  66  70  73  75  76  77  76
RH..............80  83  74  64  51  43  36  33  31  30  28  27
20 FT wind dir..NE  NE  NE  NE  NE  NE  E   E   E   E   E   E
20 FT wind spd..6   6   7   8   9   9   10  10  12  12  13  14
20 FT wind gust.10  9   10  13  14  14  15  16  18  20  21  23
Mix hgt (kft)...1.3 1.6 2.0 2.4 2.9 3.4 3.8 4.2 4.7 5.1 4.7 4.3
Transp wind dir.NE  NE  NE  NE  NE  E   E   E   E   SE  SE  SE
Transp wind spd.20  17  16  15  14  15  15  16  17  18  21  22

$$
Forecaster...CS
Requested by...Thomas Skinner PSC3
Type of request...WILDFIRE
.TAG 2621606.0/UNR
.DELDT 09/10/26
.FormatterVersion 2.0.0
.EMAIL thomas_skinner@firenet.gov