625
FNUS75 KCYS 060950
FWSCYS

Spot Forecast for Chadron Creek RX...FS USDA
National Weather Service Cheyenne WY
350 AM MDT Sun Apr 6 2025

If conditions become unrepresentative, contact the National Weather
Service at (307) 772-2227

.DISCUSSION...
An upper level ridge is slowly pushing eastward over the Intermountain west over the next few days. This will
keep the winds out of the northwest and north today over Chadron and the remaining Nebraska Panhandle. Winds aloft
will be relatively light at 20 to 25kts over the panhandle. Due to the subsident nature of the ridge this will
allow those winds to mix down to the surface creating wind gusts up to 25 mph in the afternoon during peak mixing.
Min RH values with be between 16 and 20 peaking around noon and 3pm in the northern portion of the Nebraska Panhandle.
A nocturnal inversion will begin forming in the evening and lasting through the overnight hours cutting off the wind
gusts and aiding in poor smoke dispersal in the overnight hours.

.REST OF TODAY...

Sky/weather.........Mostly sunny (20-30 percent).
CWR.................0 percent.
Max temperature.....Around 57.
Min humidity........20 percent.
Wind (20 ft)........West winds 6 to 10 mph shifting to the
                    northwest 8 to 12 mph in the afternoon.
Mixing height.......7000 ft AGL.
Transport winds.....West 10 to 13 mph shifting to the northwest 15
                    to 20 mph in the afternoon.
Smoke dispersal.....Poor (2600 knot-ft) early in the morning
                    increasing to good (98000 knot-ft) in the
                    afternoon increasing to very good (105500
                    knot-ft) late in the afternoon.

TIME (MDT)      7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........30  40  44  47  35  20  15  10  8   9   6
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0
Temp............30  34  38  43  46  51  53  55  56  57  56
RH..............47  45  40  35  29  24  22  20  20  21  22
20 FT wind dir..W   W   NW  NW  NW  NW  NW  NW  NW  NW  N
20 FT wind spd..6   6   10  7   8   12  8   9   10  9   9
20 FT wind gust.13  13  13  15  16  18  18  20  20  20  20
Mix hgt (kft)...0.3 0.3 1.1 1.9 3.5 4.6 5.4 6.3 6.9 6.8 7.0
Transp wind dir.W   W   W   NW  NW  NW  NW  N   N   NW  N
Transp wind spd.12  10  13  12  13  15  16  17  18  20  20
SDspl kt-ft/10003   3   12  21  40  60  79  98  111 120 123

.TONIGHT...

Sky/weather.........Mostly clear (10-20 percent).
CWR.................0 percent.
Min temperature.....Around 31.
Max humidity........75 percent.
Wind (20 ft)........North winds 5 to 9 mph in the evening becoming
                    light.
Mixing height.......200 ft AGL.
Transport winds.....North 8 to 17 mph shifting to the northwest 7
                    to 9 mph late in the evening.
Smoke dispersal..... very good (101200 knot-ft) early in the
                    evening decreasing to poor (1600 knot-ft) late
                    in the night.

TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........16  13  22  28  25  26  18  13  11  5   5   7
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............56  53  48  45  43  41  40  39  37  35  33  33
RH..............24  28  33  38  41  45  47  49  53  60  65  69
20 FT wind dir..N   N   NE  NE  NW  NW  W   W   W   W   W   W
20 FT wind spd..9   7   6   5   5   3   3   3   3   3   3   3
20 FT wind gust.18  16  14  13  10  8   7   7   8   9   9   8
Mix hgt (kft)...6.6 0.4 0.3 0.3 0.3 0.4 0.3 0.3 0.3 0.3 0.3 0.2
Transp wind dir.N   N   N   N   N   N   NW  W   W   W   NW  NW
Transp wind spd.17  12  10  10  8   7   7   9   8   8   9   8
SDspl kt-ft/1000101 5   4   3   2   3   2   3   2   2   3   2

.MONDAY...

Sky/weather.........Sunny (15-25 percent).
CWR.................0 percent.
Max temperature.....Around 64.
Min humidity........24 percent.
Wind (20 ft)........Light winds becoming south 5 to 6 mph in the
                    afternoon, then becoming around 6 mph late in
                    the afternoon.
Mixing height.......6900 ft AGL.
Transport winds.....West 6 to 7 mph shifting to the southwest 6 to
                    10 mph in the late morning and afternoon.
Smoke dispersal.....Poor (1400 knot-ft) early in the morning
                    increasing to good (62600 knot-ft) in the
                    afternoon.

TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........14  30  35  18  8   5   4   5   5   5   4   4
Weather cov.....
Weather type....
Tstm cov........
CWR.............0   0   0   0   0   0   0   0   0   0   0   0
Temp............31  33  36  39  46  50  55  57  60  62  62  63
RH..............75  71  65  61  47  41  33  30  27  25  25  24
20 FT wind dir..W   SW  W   W   W   SW  SW  SW  S   S   S   S
20 FT wind spd..3   3   2   2   2   3   5   5   6   6   6   6
20 FT wind gust.8   7   7   7   7   8   9   9   10  10  10  12
Mix hgt (kft)...0.2 0.3 0.3 0.7 1.6 2.8 4.1 5.4 6.4 6.9 6.7 6.0
Transp wind dir.NW  W   W   SW  SW  SW  SW  SW  W   W   SW  SW
Transp wind spd.7   7   6   6   6   7   8   9   10  10  10  10
SDspl kt-ft/10002   2   2   4   8   17  29  44  58  63  61  54

$$
Forecaster...McLaughlin
Requested by...Ben Jech
Type of request...PRESCRIBED
.TAG 2508618.0/CYS
.DELDT 04/06/25
.FormatterVersion 2.0.0
.EMAIL jason.r.haug@usda.gov,benjamin.j.jech@usda.gov