380
FNUS75 KCYS 271148
FWSCYS

Spot Forecast for Graduation Fire...EMA
National Weather Service Cheyenne WY
548 AM MDT Wed May 27 2026

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

.DISCUSSION...A potent upper level disturbance will move northward out of
Texas today and Thursday. This disturbance will bring an increasing chance
for showers and thunderstorms across the area. However, coverage of
precipitation is lower confidence at this time due to thick cloud cover.
Temperatures will remain on the warm side for late May with gusty south
to southeast winds gusting up to 40 MPH at times. These winds will
slowly diminish later this week.

.TODAY...

Sky/weather.........Mostly sunny early, becoming partly sunny (60-75 percent).
                    Slight chance of showers and thunderstorms in the afternoon.
CWR.................5 percent.
Max temperature.....75 to 80 degrees.
Min humidity........30 percent.
Wind (20 ft)........Southeast winds 10 to 20 mph. Gusts up to 35
                    mph increasing to 40 mph late in the morning.
                    Gusty and erratic winds expected near
                    thunderstorms in the afternoon.
Mixing height.......7900 ft AGL.
Transport winds.....South 18 to 25 mph.
Smoke dispersal.....Excellent (174600 knot-ft).


TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........56  56  56  69  69  69  70  70  70  69  69  69
Weather cov.....                        SCH SCH SCH SCH SCH SCH
Weather type....                        RW  RW  RW  RW  RW  RW
Tstm cov........                        SCH SCH SCH SCH SCH SCH
CWR.............0   0   0   0   0   0   10  10  10  10  10  10
Temp............59  62  65  68  74  74  76  77  77  78  76  75
RH..............64  60  54  49  38  35  33  31  31  30  34  37
20 FT wind dir..S   S   S   SE  SE  SE  SE  SE  S   S   S   S
20 FT wind spd..13  14  15  16  17  18  20  18  18  17  16  16
20 FT wind gust.25  26  29  30  33  36  38  36  36  33  32  30
Mix hgt (kft)...0.5 0.6 1.8 3.9 5.8 6.7 7.2 7.9 7.3 7.5 6.4 5.4
Transp wind dir.S   S   S   S   S   S   S   SE  SE  SE  SE  SE
Transp wind spd.18  20  22  23  25  25  24  25  24  25  24  25
SDspl kt-ft/10009   11  34  77  129 146 152 175 153 164 135 119

.TONIGHT...

Sky/weather.........Mostly cloudy (70-85 percent). Slight chance of
                    showers and thunderstorms early in the evening.
CWR.................5 percent.
Min temperature.....Around 55 degrees.
Max humidity........65 to 80 percent.
Wind (20 ft)........South winds 10 to 15 mph with gusts to around
                    30 mph. Gusty and erratic winds expected near
                    thunderstorms early in the evening.
Mixing height.......500 ft AGL.
Transport winds.....South 15 to 24 mph.
Smoke dispersal.....Poor (7400 knot-ft).


TIME (MDT)      6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
Sky (%).........68  68  68  76  76  76  79  79  79  83  83  83
Weather cov.....SCH SCH SCH
Weather type....RW  RW  RW
Tstm cov........SCH SCH SCH
CWR.............10  10  10  10  10  10  0   0   0   0   0   0
Temp............74  72  68  65  64  64  64  62  62  61  61  60
RH..............38  43  49  54  56  58  58  65  62  65  65  64
20 FT wind dir..S   S   S   S   S   S   S   S   S   S   S   S
20 FT wind spd..15  14  14  13  12  12  12  12  10  10  10  12
20 FT wind gust.29  26  26  25  23  22  22  22  20  20  20  22
Mix hgt (kft)...4.1 3.0 1.8 0.7 0.7 0.7 0.6 0.6 0.6 0.6 0.5 0.5
Transp wind dir.S   S   S   S   S   S   S   S   S   S   S   S
Transp wind spd.24  23  20  18  17  16  15  15  16  16  16  16
SDspl kt-ft/100086  60  30  11  11  9   8   8   8   8   7   7

.THURSDAY...

Sky/weather.........Mostly cloudy (70-80 percent). Slight chance of
                    rain showers in the morning, then chance of
                    showers and thunderstorms in the afternoon.
CWR.................10 percent.
Max temperature.....75 to 80 degrees.
Min humidity........30 to 40 percent.
Wind (20 ft)........Southeast winds 10 to 20 mph. Gusts up to 30
                    mph in the afternoon. Gusty and erratic winds
                    expected near thunderstorms in the afternoon.
Mixing height.......7400 ft AGL.
Transport winds.....South 16 to 22 mph.
Smoke dispersal.....very good (110200 knot-ft).


TIME (MDT)      6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
Sky (%).........82  82  82  74  74  74  71  71  71  63  63  63
Weather cov.....SCH SCH SCH SCH SCH SCH CHC CHC CHC CHC CHC CHC
Weather type....RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW  RW
Tstm cov........                        CHC CHC CHC CHC CHC CHC
CWR.............10  10  10  10  10  10  10  10  10  10  10  10
Temp............57  61  64  67  72  73  73  76  77  77  77  76
RH..............72  70  63  56  48  46  46  42  39  37  37  39
20 FT wind dir..S   S   S   S   SE  SE  SE  SE  SE  SE  SE  SE
20 FT wind spd..12  12  13  14  15  16  16  16  16  16  16  16
20 FT wind gust.22  23  25  26  29  30  32  32  32  32  31  31
Mix hgt (kft)...0.6 1.2 2.4 3.4 4.5 5.1 5.8 7.3 7.4 6.3 5.8 6.2
Transp wind dir.S   S   S   S   SE  S   S   S   SE  S   S   S
Transp wind spd.16  17  20  21  22  22  22  22  22  22  22  22
Haines index....M   M   M   M   M   M   M   M   M   M   M   M
SDspl kt-ft/10008   19  41  61  86  96  111 138 140 120 110 118

$$

Requested by...Region 22
Type of request...WILDFIRE
.TAG 2614534.0/CYS
.DELDT 05/27/26
.FormatterVersion 2.0.0
.EMAIL robert.crowder@scottsbluffcountyne.gov