159
FNUS75 KCYS 041704
FWSCYS
SPOT FORECAST FOR HARRISBURG RX FIRE...BANNER COUNTY FIRE DEPT./REGION 22 EMA
NATIONAL WEATHER SERVICE CHEYENNE WY
1104 AM MDT THU SEP 4 2025
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE NATIONAL WEATHER
SERVICE AT (307) 772-2227
DISCUSSION
EXCELLENT SMOKE DISPERSAL IS EXPECTED TODAY WITH NORTH TO NORTHEASTERLY WINDS
IN THE 15-20 MPH RANGE. SOME WIND GUSTS COULD REACH 35 MPH LATER THIS AFTERNOON.
NO RAIN IS EXPECTED AND AFTERNOON RH VALUES WILL DROP TO AROUND 20%. A COLD FRONT
WILL DROP SOUTH THROUGH THE REGION AROUND SUNSET WHICH WILL ENHANCE NORTHERLY FLOW
WITH GUSTY WINDS OUT OF THE NORTH CONTINUING. LOWER CLOUDS WILL LIKELY MOVE IN WITH
A RAPID INCREASE IN SURFACE RH VALUES. AN ISOLATED SHOWER OR SPRINKLE OR TWO IS
POSSIBLE HOWEVER WETTING RAIN IS NOT LIKELY OVER THE BURN LOCATION.
REST OF TODAY
SKY/WEATHER.........SUNNY (10-20 PERCENT). AREAS OF SMOKE.
CWR.................3 PERCENT.
MAX TEMPERATURE.....AROUND 86.
MIN HUMIDITY........20 PERCENT.
WIND (20 FT)........NORTH WINDS 15 TO 20 MPH WITH GUSTS TO AROUND
35 MPH.
MIXING HEIGHT.......10600 FT AGL.
TRANSPORT WINDS.....NORTHWEST 24 TO 26 MPH.
SMOKE DISPERSAL.....EXCELLENT (202800 KNOT-FT).
TIME (MDT) 9AM 10A 11A
SKY (%).........16 16 16
WEATHER COV.....ARS ARS ARS
WEATHER TYPE....SMK SMK SMK
TSTM COV........
CWR.............0 0 0
TEMP............85 84 82
RH..............20 22 24
20 FT WIND DIR..N N N
20 FT WIND SPD..16 20 21
20 FT WIND GUST.30 35 39
MIX HGT (KFT)...11 11 8.8
TRANSP WIND DIR.NW NW N
TRANSP WIND SPD.25 24 26
SDSPL KT-FT/1000233 223 203
TONIGHT
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT) THEN BECOMING
MOSTLY CLOUDY (65-75 PERCENT). AREAS OF SMOKE
EARLY IN THE EVENING. CHANCE OF LIGHT
RAIN SHOWERS THROUGH THE NIGHT.
CWR.................6 PERCENT.
MIN TEMPERATURE.....AROUND 49.
MAX HUMIDITY........66 PERCENT.
WIND (20 FT)........NORTH WINDS 15 TO 25 MPH WITH GUSTS TO AROUND
40 MPH DECREASING TO 9 TO 13 MPH OVERNIGHT.
MIXING HEIGHT.......1500 FT AGL.
TRANSPORT WINDS.....NORTH 22 TO 29 MPH DECREASING TO 12 TO 18 MPH
OVERNIGHT.
SMOKE DISPERSAL.....VERY GOOD (129900 KNOT-FT) EARLY IN THE
EVENING DECREASING TO POOR (35100 KNOT-FT) LATE
IN THE NIGHT DECREASING TO POOR (14700 KNOT-FT)
OVERNIGHT.
TIME (MDT) 12P 1PM 2PM 3PM 4PM 5PM 6PM 7PM 8PM 9PM 10P 11P
SKY (%).........34 23 20 26 41 46 54 62 77 77 81 80
WEATHER COV.....CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC CHC
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW
TSTM COV........SCH SCH SCH
CWR.............10 10 10 10 10 10 10 10 10 10 10 10
TEMP............77 72 66 62 60 58 57 55 54 53 51 51
RH..............30 35 43 50 49 49 49 53 57 61 66 63
20 FT WIND DIR..N N N N N N N N N N N N
20 FT WIND SPD..23 22 21 17 16 14 13 12 12 10 9 9
20 FT WIND GUST.41 40 37 32 29 25 23 22 20 18 17 17
MIX HGT (KFT)...5.2 3.0 2.3 1.8 2.5 1.9 2.5 1.7 2.0 1.6 1.7 1.5
TRANSP WIND DIR.N N N N N N N N N N N N
TRANSP WIND SPD.29 28 26 23 24 22 22 18 17 13 12 12
SDSPL KT-FT/1000130 71 52 35 53 36 48 26 30 18 17 15
FORECASTER...CHARNICK
REQUESTED BY...ROB CROWDER
TYPE OF REQUEST...PRESCRIBED
.TAG 2521320.0/CYS
.DELDT 09/04/25
.FORMATTERVERSION 2.0.0
.EMAIL ROBERT.CROWDER@SCOTTSBLUFFCOUNTYNE.GOV
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