750
FNUS75 KCYS 141532
FWSCYS
SPOT FORECAST FOR ROCHELLE 2...WYCPC
NATIONAL WEATHER SERVICE CHEYENNE WY
932 AM MDT THU MAY 14 2026
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE AT (307) 772-2227
DISCUSSION
CRITICAL FIRE WEATHER CONCERNS ARE EXPECTED TODAY WITH EXTREMELY
DRY AND WINDY CONDITIONS. NEARBY OBSERVATIONS CURRENTLY SHOW A
TEMPERATURES AROUND 60 DEGREES WITH WINDS OUT OF THE NORTH AT 10
MPH GUSTING TO 20 MPH. RELATIVE HUMIDITY IS CURRENTLY AROUND 25
PERCENT. AS THE DAY PROGRESSES, SUNNY SKIES WITH CONTINUE, WITH
A HIGH TEMPERATURE OF 75 DEGREES. WINDS WILL SHIFT MORE NORTHWESTERLY
AND INCREASE BY THE AFTERNOON. SUSTAINED WINDS OF 20 TO 25 MPH
ARE EXPECTED WITH GUSTS OF 35 TO 40 MPH. RELATIVE HUMIDITY WILL
FALL INTO THE SINGLE DIGITS THIS AFTERNOON, WITH AN EXPECTED
MINIMUM RELATIVE HUMIDITY OF 9 PERCENT. WINDS WILL WEAKEN OVERNIGHT,
BECOMING LIGHT AND VARIABLE. HUMIDITY RECOVERIES OVERNIGHT WILL
BE ON THE POORER SIDE, WITH A MAXIMUM HUMIDITY AROUND 40 PERCENT.
ANOTHER CRITICAL FIRE WEATHER DAY IS EXPECTED FRIDAY WITH SIMILAR
TEMPERATURES AND SUNNY SKIES. MINIMUM RELATIVE HUMIDITY WILL BE
AROUND 10 PERCENT WITH NORTHWEST WINDS AT 15 TO 20 MPH WITH GUSTS
TO 30 MPH.
REST OF TODAY
SKY/WEATHER.........SUNNY (0-10 PERCENT).
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 76.
MIN HUMIDITY........9 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 9 TO 17 MPH. GUSTS UP TO 36 MPH
IN THE AFTERNOON.
MIXING HEIGHT.......11300 FT AGL.
TRANSPORT WINDS.....WEST 20 TO 25 MPH INCREASING TO 30 TO 33 MPH IN
THE AFTERNOON.
SMOKE DISPERSAL.....GOOD (85400 KNOT-FT) EARLY IN THE MORNING
INCREASING TO VERY GOOD (149300 KNOT-FT) IN THE
AFTERNOON INCREASING TO EXCELLENT (240500
KNOT-FT) IN THE AFTERNOON.
HAINES INDEX........MISSING.
TIME (MDT) 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........4 6 2 3 4 3 6 12
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0
TEMP............65 68 70 73 74 75 76 75
RH..............22 18 15 12 11 10 9 9
20 FT WIND DIR..NW W W W W NW NW NW
20 FT WIND SPD..9 12 16 16 17 17 17 16
20 FT WIND GUST.20 25 31 33 35 36 36 36
MIX HGT (KFT)...5.0 6.8 8.6 9.6 9.9 11 11 11
TRANSP WIND DIR.W W W W W W W W
TRANSP WIND SPD.20 25 32 33 32 32 31 30
HAINES INDEX....M M M M M M M M
SDSPL KT-FT/100085 149 241 278 278 299 297 293
TONIGHT
SKY/WEATHER.........MOSTLY CLEAR (10-20 PERCENT).
CWR.................0 PERCENT.
MIN TEMPERATURE.....AROUND 42.
MAX HUMIDITY........40 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 6 TO 15 MPH WITH GUSTS TO
AROUND 32 MPH DECREASING TO AROUND 5 MPH LATE
IN THE EVENING, THEN BECOMING LIGHT OVERNIGHT
BECOMING NORTHWEST AROUND 5 MPH AFTER 3 AM.
MIXING HEIGHT.......8800 FT AGL DECREASING TO 400 FT AGL EARLY IN
THE EVENING.
TRANSPORT WINDS.....NORTHWEST 24 TO 29 MPH DECREASING TO 10 TO 15
MPH EARLY IN THE EVENING, THEN SHIFTING TO THE
NORTHEAST 5 TO 6 MPH LATE IN THE EVENING
SHIFTING TO THE NORTHWEST 6 TO 9 MPH AFTER 3
AM.
SMOKE DISPERSAL.....EXCELLENT (185800 KNOT-FT) DECREASING TO POOR
(1800 KNOT-FT) EARLY IN THE EVENING.
HAINES INDEX........MISSING.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........8 10 9 24 17 10 7 6 5 6 8 5
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............75 73 67 62 58 55 52 50 49 46 46 45
RH..............9 10 13 16 21 24 28 30 31 34 34 36
20 FT WIND DIR..NW NW NW NW N NW NW W NW NW W NW
20 FT WIND SPD..15 12 9 7 6 5 3 3 3 5 5 5
20 FT WIND GUST.32 25 20 15 12 9 7 7 7 8 8 9
MIX HGT (KFT)...11 8.8 0.7 0.7 0.5 0.5 0.5 0.4 0.5 0.4 0.5 0.4
TRANSP WIND DIR.W NW NW NW N N NE E NE NW NW NW
TRANSP WIND SPD.29 24 15 13 10 6 5 5 6 6 7 9
HAINES INDEX....M M M M M M M M M M M M
SDSPL KT-FT/1000275 186 10 8 5 3 2 2 2 2 3 4
FRIDAY
SKY/WEATHER.........SUNNY (15-25 PERCENT).
CWR.................0 PERCENT.
MAX TEMPERATURE.....AROUND 77.
MIN HUMIDITY........10 PERCENT.
WIND (20 FT)........NORTHWEST WINDS 5 TO 14 MPH WITH GUSTS TO
AROUND 31 MPH SHIFTING TO THE WEST AROUND 15
MPH WITH GUSTS TO AROUND 32 MPH LATE IN THE
AFTERNOON.
MIXING HEIGHT.......9100 FT AGL INCREASING TO 14200 FT AGL IN THE
AFTERNOON.
TRANSPORT WINDS.....NORTHWEST 8 TO 16 MPH INCREASING TO WEST 22 TO
30 MPH IN THE AFTERNOON.
SMOKE DISPERSAL.....POOR (3200 KNOT-FT) EARLY IN THE MORNING
INCREASING TO GOOD (94200 KNOT-FT) IN THE
AFTERNOON INCREASING TO EXCELLENT (292100
KNOT-FT).
HAINES INDEX........MISSING.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........10 14 11 4 4 4 9 9 14 14 39 37
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
TEMP............43 46 51 56 63 66 69 73 75 75 77 75
RH..............40 35 31 26 20 17 15 12 12 10 10 10
20 FT WIND DIR..NW NW NW N NW W W W W W W W
20 FT WIND SPD..5 6 6 7 7 7 7 8 10 13 14 15
20 FT WIND GUST.10 10 10 12 14 16 18 23 29 31 31 32
MIX HGT (KFT)...0.5 0.5 1.4 2.6 4.2 6.7 9.1 11 13 14 14 14
TRANSP WIND DIR.NW N N NW W W W W W W W W
TRANSP WIND SPD.9 8 8 8 10 16 22 25 26 30 30 29
HAINES INDEX....M M M M M M M M M M M M
SDSPL KT-FT/10004 3 10 18 38 94 173 248 292 354 370 338
FORECASTER...FULLER
REQUESTED BY...M.MCLAUGHLIN
TYPE OF REQUEST...WILDFIRE
.TAG 2613649.0/CYS
.DELDT 05/14/26
.FORMATTERVERSION 2.0.0
.EMAIL WYCPC@FIRENET.GOV
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