641
FNUS75 KBOU 210949
FWSBOU
SPOT FORECAST FOR RMA 8A...USFWS
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
349 AM MDT WED OCT 21 2026
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
IT WILL BE DRY TODAY WITH SKIES BECOMING PARTLY CLOUDY
BY 1200. MINIMUM HUMIDITY WILL BE AROUND 22 PERCENT IN THE AFTERNOON.
WINDS WILL BE LIGHT AND VARIABLE AROUND 5 MPH UNTIL 1200, THEN BECOME
SOUTHEAST 5 TO 7 MPH. BY 1400, WINDS WILL BE SOUTHEAST 7 TO 12 MPH.
SMOKE DISPERSAL WILL BE POOR UNTIL 1300, THEN FAIR UNTIL 1400. AFTER
1400 GOOD UNTIL 1600, THEN FAIR BY 1700.
FOR TONIGHT, IT WILL BE MOSTLY CLOUDY WITH HUMIDITY RECOVERY OVERNIGHT
AROUND 65 PERCENT. SOUTHEAST WINDS 8 TO 14 MPH UNTIL 2100, THEN
SOUTH 6 TO 10 MPH. SMOKE DISPERSAL WILL BE POOR.
TODAY
SKY/WEATHER.........MOSTLY SUNNY UNTIL 1200, THEN PARTLY CLOUDY
(35-45 PERCENT) UNTIL UNTIL 1600, THEN
MOSTLY CLOUDY (60-70 PERCENT).
CWR.................0 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...1 PERCENT.
MAX TEMPERATURE.....AROUND 76.
MIN HUMIDITY........22 PERCENT.
WIND (20 FT)........LIGHT AND VARIABLE UNDER 5 MPH UNTIL 1200, THEN
SOUTHEAST WINDS 5 TO 7 MPH UNTIL 1400 INCREASING
TO 7 TO 12 MPH BY 1600.
MIXING HEIGHT.......BELOW 1000 FT AGL UNTIL 1000. 6600 FT AGL AFTER
1200.
TRANSPORT WINDS.....SOUTHWEST AROUND 8 MPH UNTIL 0800. SOUTH 8 TO
14 MPH AFTER 1000.
SMOKE DISPERSAL.....POOR UNTIL 1300, THEN FAIR UNTIL 1400, THEN
GOOD UNTIL 1600 BECOMING FAIR BY 1700.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........44 54 51 46 37 24 35 30 36 46 59 66
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............47 47 49 54 60 65 70 73 75 77 77 76
RH..............71 71 66 55 44 37 31 27 25 22 22 22
20 FT WIND DIR..SW S S S S S SE SE SE SE SE SE
20 FT WIND SPD..5 5 6 6 5 3 3 6 8 10 10 10
20 FT WIND GUST.9 9 7 7 7 6 7 9 13 15 15 15
MIX HGT (KFT)...0.4 0.4 0.4 0.4 1.0 2.4 4.4 5.9 6.6 7.2 6.7 5.4
TRANSP WIND DIR.SW S SW SW S S S S S S S S
TRANSP WIND SPD.5 6 6 6 5 6 8 10 12 13 13 14
VRATE KT-FT/1K..2 2 2 2 4 12 31 53 66 80 74 65
SMOKEDISPERSION.P P P P P P P F G G G G
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT).
CWR.................1 PERCENT.
CHANCE OF PCPN......0 PERCENT.
CHANCE OF THUNDER...1 PERCENT.
MIN TEMPERATURE.....AROUND 53.
MAX HUMIDITY........64 PERCENT.
WIND (20 FT)........SOUTHEAST WINDS 8 TO 14 MPH UNTIL 2100,
THEN SOUTH 6 TO 10 MPH.
MIXING HEIGHT.......1100 FT AGL UNTIL 1900, THEN BELOW 1000 FT AGL.
TRANSPORT WINDS.....SOUTH 11 TO 16 MPH UNTIL 0300, THEN 10 TO 15
MPH.
SMOKE DISPERSAL.....POOR.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........62 65 62 67 67 72 78 79 74 80 85 78
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).0 0 0 0 0 0 0 0 0 0 0 0
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 0 0 0
TEMP............74 70 67 65 64 63 62 61 60 59 57 56
RH..............25 31 36 38 41 43 44 48 49 51 55 59
20 FT WIND DIR..SE SE S S S S S S S S S SW
20 FT WIND SPD..10 12 12 13 13 12 12 12 12 10 9 8
20 FT WIND GUST.15 16 16 16 18 18 16 16 15 15 13 9
MIX HGT (KFT)...1.1 0.8 0.7 0.5 0.5 0.6 0.7 0.6 0.6 0.6 0.6 0.5
TRANSP WIND DIR.SE S S S S S S S S S S S
TRANSP WIND SPD.12 13 14 14 14 14 14 14 14 14 13 10
VRATE KT-FT/1K..11 9 8 6 6 7 8 7 7 7 6 4
SMOKEDISPERSION.P P P P P P P P P P P P
THURSDAY
SKY/WEATHER.........MOSTLY CLOUDY (70-80 PERCENT) UNTIL 1400, THEN
PARTLY CLOUDY (40-50 PERCENT) UNTIL 1700.
CWR.................2 PERCENT.
CHANCE OF PCPN......10 PERCENT.
CHANCE OF THUNDER...6 PERCENT.
MAX TEMPERATURE.....AROUND 77.
MIN HUMIDITY........31 PERCENT.
WIND (20 FT)........SOUTHWEST WINDS 5 TO 7 MPH UNTIL 1500.
SOUTHEAST AROUND 8 MPH AFTER 1700.
MIXING HEIGHT.......BELOW 1000 FT AGL UNTIL 1000. 4700 FT AGL AFTER
1500.
TRANSPORT WINDS.....SOUTH AROUND 9 MPH UNTIL 0700, THEN SOUTHWEST 8
TO 10 MPH UNTIL 1000, THEN LIGHT UNTIL 1100,
THEN SOUTHWEST 10 TO 15 MPH.
SMOKE DISPERSAL.....POOR UNTIL 1400, THEN FAIR UNTIL 1700, THEN
POOR.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........83 83 85 84 78 74 73 64 49 55 44 51
WEATHER COV.....
WEATHER TYPE....
TSTM COV........
CWR.............0 0 0 0 0 0 0 0 0 0 0 0
CHC OF PCPN (%).0 0 0 0 0 0 10 10 10 10 10 10
CHC OF THDR (%).0 0 0 0 0 0 0 0 0 10 10 10
TEMP............55 53 55 57 63 67 70 72 74 75 75 76
RH..............61 64 59 57 46 40 35 34 32 31 31 31
20 FT WIND DIR..SW SW SW SW SW SW SW SW SW S S SE
20 FT WIND SPD..6 5 5 5 5 5 5 5 6 7 8 8
20 FT WIND GUST.9 7 7 7 7 7 7 7 9 12 13 13
MIX HGT (KFT)...0.5 0.4 0.4 0.5 1.1 1.6 2.3 2.8 3.6 5.0 4.5 3.4
TRANSP WIND DIR.S SW SW SW SW SW SW SW SW S SW S
TRANSP WIND SPD.9 7 7 8 7 10 10 14 14 14 13 13
VRATE KT-FT/1K..4 2 2 4 7 15 20 34 43 59 50 37
SMOKEDISPERSION.P P P P P P P P F F F P
FORECASTER...RPK
REQUESTED BY...SCOTT WHITEAKER
TYPE OF REQUEST...PRESCRIBED
.TAG 2624187.0/BOU
.DELDT 10/21/26
.FORMATTERVERSION 2.0.0
.EMAIL SCOTT_WHITEAKER@FWS.GOV
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