107
FNUS75 KCYS 212226
FWSCYS
SPOT FORECAST FOR LOGAN DRAW...USFS
NATIONAL WEATHER SERVICE CHEYENNE WY
426 PM MDT SAT MAR 21 2026
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE AT (307) 772-2227
..RED FLAG WARNING IN EFFECT UNTIL 8 PM MDT THIS EVENING
DISCUSSION
A COLD FRONT MOVING THROUGH THE AREA WILL CAUSE WINDS TO TURN MORE
NORTHERLY LATER THIS EVENING. BLUSTERY WINDS ARE EXPECTED BEHIND THE
FRONT WITH SUSTAINED WINDS OF 25 MPH, GUSTING TO 40 MPH. GOOD HUMIDITY
RECOVERIES ARE EXPECTED BEHIND THE FRONT, WITH A MAXIMUM RELATIVE
HUMIDITY AROUND 90 PERCENT. A LOW AROUND 35 DEGREES IS EXPECTED.
A LOW STRATUS DECK WILL DEVELOP EARLY SUNDAY MORNING AND LIKELY CONTINUE
THROUGH EARLY AFTERNOON. CANNOT RULE OUT A LIGHT SHOWER OR SPRINKLE
DURING THIS TIME, HOWEVER PROBABILITIES FOR THIS ARE LOW. TEMPERATURES
ON SUNDAY WILL BE COOLER BEHIND THE FRONT WITH A HIGH AROUND 60 DEGREES.
MINIMUM RELATIVE HUMIDITY DURING THE AFTERNOON WILL FALL TO ABOUT
25 PERCENT. LIGHT NORTHERLY WINDS ARE EXPECTED THROUGHOUT THE DAY AT
ABOUT 5 TO 10 MPH.
INCREASED CLOUDS ARE EXPECTED ONCE AGAIN SUNDAY NIGHT. LOW TEMPERATURE
AND HUMIDITY RECOVERY WILL BE SIMILAR TO SATURDAY NIGHT. HOWEVER, WINDS
WILL TURN MORE EASTERLY AT ABOUT 5 TO 10 MPH.
HIGH PRESSURE WILL BUILD BACK INTO THE AREA ON MONDAY, LEADING TO WARMER
AND DRIER CONDITIONS. RELATIVE HUMIDITY WILL FALL BACK INTO THE TEENS, WITH
HIGHS IN THE UPPER 60S. MINIMAL CHANCES FOR PRECIPITATION ARE EXPECTED WITH
LIGHT WINDS.
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (35-45 PERCENT) THEN BECOMING
MOSTLY CLOUDY (55-65 PERCENT).
CWR.................4 PERCENT.
MIN TEMPERATURE.....AROUND 37.
MAX HUMIDITY........89 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 20 TO 21 MPH WITH GUSTS TO
AROUND 38 MPH SHIFTING TO THE NORTH 13 TO 21
MPH WITH GUSTS TO AROUND 38 MPH IN THE LATE
EVENING AND OVERNIGHT, THEN DECREASING TO 7 TO
10 MPH OVERNIGHT.
MIXING HEIGHT.......1200 FT AGL.
TRANSPORT WINDS.....WEST AROUND 37 MPH BECOMING NORTHWEST 24 TO 28
MPH EARLY IN THE EVENING, THEN SHIFTING TO THE
NORTH 17 TO 26 MPH IN THE LATE EVENING AND
OVERNIGHT DECREASING TO 8 TO 14 MPH AFTER 3 AM.
SMOKE DISPERSAL.....EXCELLENT (310600 KNOT-FT) DECREASING TO FAIR
(40300 KNOT-FT) EARLY IN THE EVENING DECREASING
TO POOR (13200 KNOT-FT) LATE IN THE NIGHT.
HAINES INDEX........MISSING.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........48 43 35 31 36 35 43 42 47 53 65 68
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............80 72 67 60 53 48 44 41 40 38 38 37
RH..............11 15 19 32 45 56 68 76 76 82 82 85
20 FT WIND DIR..NW NW N N N N N N N N N N
20 FT WIND SPD..20 20 21 21 20 16 15 13 10 8 7 7
20 FT WIND GUST.36 37 38 38 36 32 28 23 20 16 14 13
MIX HGT (KFT)...9.7 1.2 1.2 1.7 1.7 1.5 1.7 1.7 1.9 2.1 1.9 1.9
TRANSP WIND DIR.W NW NW N N N N N N N N N
TRANSP WIND SPD.37 24 25 28 26 24 23 20 17 14 10 8
HAINES INDEX....M M M M M M M M M M M M
SDSPL KT-FT/1000311 26 25 40 40 32 33 28 29 25 18 13
SUNDAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT).
CWR.................3 PERCENT.
MAX TEMPERATURE.....AROUND 59.
MIN HUMIDITY........27 PERCENT.
WIND (20 FT)........NORTH WINDS 5 TO 7 MPH EARLY IN THE MORNING
BECOMING LIGHT, THEN BECOMING NORTH 5 TO 6 MPH
LATE IN THE AFTERNOON.
MIXING HEIGHT.......6300 FT AGL.
TRANSPORT WINDS.....NORTH 6 TO 8 MPH SHIFTING TO THE NORTHWEST 7 TO
13 MPH LATE IN THE MORNING.
SMOKE DISPERSAL.....POOR (8000 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (63500 KNOT-FT) IN THE
AFTERNOON.
HAINES INDEX........MISSING.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........67 65 69 66 62 53 40 34 26 21 30 32
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............37 37 38 40 43 46 48 51 55 57 59 59
RH..............85 89 85 82 73 63 58 50 38 34 28 27
20 FT WIND DIR..N N N NW NW NW NW NW N N N N
20 FT WIND SPD..7 6 5 5 3 3 3 3 5 5 6 6
20 FT WIND GUST.12 10 9 8 8 7 7 7 8 9 10 10
MIX HGT (KFT)...1.9 1.3 1.7 2.3 2.4 2.7 3.5 4.5 5.3 6.3 5.8 5.6
TRANSP WIND DIR.N N N N NW NW NW NW W W W W
TRANSP WIND SPD.8 7 7 6 6 7 7 8 12 12 13 13
HAINES INDEX....M M M M M M M M M M M M
SDSPL KT-FT/100013 8 10 12 12 16 21 32 53 63 64 62
SUNDAY NIGHT
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT) THEN BECOMING
MOSTLY CLOUDY (50-60 PERCENT) THEN BECOMING
PARTLY CLOUDY (45-55 PERCENT).
CWR.................0 PERCENT.
MIN TEMPERATURE.....AROUND 35.
MAX HUMIDITY........82 PERCENT.
WIND (20 FT)........NORTHEAST WINDS AROUND 7 MPH SHIFTING TO THE
EAST 5 TO 7 MPH LATE IN THE EVENING.
MIXING HEIGHT.......100 FT AGL.
TRANSPORT WINDS.....NORTHWEST AROUND 9 MPH SHIFTING TO THE EAST 9
TO 13 MPH IN THE EVENING, THEN INCREASING TO 12
TO 14 MPH OVERNIGHT.
SMOKE DISPERSAL.....POOR (900 KNOT-FT).
HAINES INDEX........MISSING.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........39 38 38 44 49 55 60 60 57 54 51 49
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............59 54 49 46 43 41 39 38 38 37 36 35
RH..............27 32 39 40 43 44 50 59 67 72 75 82
20 FT WIND DIR..N N NE NE NE E E E E E E E
20 FT WIND SPD..7 7 7 7 7 7 7 6 6 6 6 5
20 FT WIND GUST.12 12 12 12 12 12 12 12 10 10 9 9
MIX HGT (KFT)...4.7 1.0 0.1 0.8 0.7 0.7 0.8 0.8 0.9 0.9 0.8 0.6
TRANSP WIND DIR.NW NE NE E E E E E E E E E
TRANSP WIND SPD.9 9 10 13 13 12 10 12 13 14 14 13
HAINES INDEX....M M M M M M M M M M M M
SDSPL KT-FT/100037 8 1 9 8 7 7 8 10 11 9 6
MONDAY
SKY/WEATHER.........MOSTLY SUNNY (40-50 PERCENT).
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 67.
MIN HUMIDITY........19 PERCENT.
WIND (20 FT)........EAST WINDS 5 TO 6 MPH.
MIXING HEIGHT.......5100 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 12 TO 13 MPH SHIFTING TO THE WEST 10
TO 12 MPH LATE IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (5200 KNOT-FT) EARLY IN THE MORNING
INCREASING TO FAIR (49500 KNOT-FT) IN THE
AFTERNOON.
HAINES INDEX........MISSING.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........51 53 56 54 51 45 37 35 35 39 41 42
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............35 35 37 40 45 51 56 61 64 66 67 67
RH..............82 82 79 70 60 48 38 30 24 21 19 19
20 FT WIND DIR..E E E SE SE SE SE SE E E E NE
20 FT WIND SPD..5 5 5 5 5 5 5 5 5 5 6 6
20 FT WIND GUST.8 8 8 8 8 8 8 8 9 9 9 10
MIX HGT (KFT)...0.5 0.6 0.8 1.1 1.3 1.6 2.1 2.9 3.8 4.5 5.0 5.1
TRANSP WIND DIR.E E SE SE SE S S SW SW W W W
TRANSP WIND SPD.13 13 13 13 12 9 8 9 10 12 12 10
HAINES INDEX....M M M M M M M M M M M M
SDSPL KT-FT/10005 6 9 12 13 13 15 23 34 45 50 46
FORECASTER...FULLER
REQUESTED BY...EDDIE
TYPE OF REQUEST...WILDFIRE
.TAG 2607030.0/CYS
.DELDT 03/21/26
.FORMATTERVERSION 2.0.0
.EMAIL WYCPC@FIRENET.GOV
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