908
FNUS75 KBOU 211040
FWSBOU
SPOT FORECAST FOR HARTMAN HILL...USFS
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
440 AM MDT TUE JUL 21 2026
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
PARTLY CLOUDY UNTIL 1100, THEN MOSTLY CLOUDY. SHOWERS
WILL BECOME LIKELY BY 1300 ALONG WITH A CHANCE OF THUNDERSTORMS.
WINDS WILL BE LIGHT EAST AT 5 MPH UNTIL 1100, THEN SOUTHEAST 5 TO
7 MPH. GUSTY AND ERRACTIC WINDS NEAR THUNDERSTORMS AFTER 1200.
MINIMUM HUMIDITY WILL BE AROUND 20%.
FOR TONIGHT, MOSTLY CLOUDY UNTIL 2400, THEN PARTLY CLOUDY. CHANCE
OF SHOWERS UNTIL 2400 WITH A SLIGHT CHANCE OF THUNDERSTORMS UNTIL
2100. HUMIDITY RECOVERY UP TO 65 PERCENT OVERNIGHT. EAST WINDS 5
TO 7 MPH UNTIL 2400, THEN LIGHT AND VARIABLE AROUND 5 MPH.
REST OF TODAY
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT) UNTIL 1100, THEN
MOSTLY CLOUDY (60-70 PERCENT). CHANCE OF
SHOWERS AND THUNDERSTORMS AFTER 1200. SHOWERS LIKELY
AFTER 1300.
CWR.................7 PERCENT INCREASING TO 30 PERCENT.
CHANCE OF THUNDER...44 PERCENT.
MAX TEMPERATURE.....AROUND 91.
MIN HUMIDITY........20 PERCENT.
WIND (20 FT)........EAST WINDS AROUND 5 MPH UNTIL 1100, THEN SOUTHEAST
AROUND 5 TO 7 MPH. GUSTY AND ERRATIC WINDS EXPECTED
NEAR THUNDERSTORMS AFTER 1200.
MIXING HEIGHT.......BELOW 1000 FT AGL UNTIL 0900, THEN 2100 FT AGL
UNTIL 1000, THEN 5400 FT AGL UNTIL 1100, THEN
10500 FT AGL UNTIL 1600, THEN 7400 FT AGL.
TRANSPORT WINDS.....EAST 8 TO 9 MPH UNTIL 0900, THEN SOUTHEAST 8 TO
10 MPH UNTIL 1400, THEN SOUTH 8 TO 11 MPH UNTIL
1700, THEN SOUTHEAST AROUND 12 MPH.
SMOKE DISPERSAL.....POOR UNTIL 1100, THEN GOOD UNTIL 1600, THEN
FAIR UNTIL 1700, THEN GOOD.
TIME (MDT) 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........29 18 12 8 53 53 77 77 77 77 77
WEATHER COV..... CHC CHC LKY LKY LKY LKY LKY
WEATHER TYPE.... RW RW RW RW RW RW RW
TSTM COV........ CHC CHC CHC CHC CHC CHC
CWR.............0 0 0 0 10 20 30 30 30 30 30
CHC OF THDR (%).0 0 0 0 0 30 40 40 40 40 40
TEMP............61 67 72 81 86 89 90 87 86 85 81
RH..............58 50 42 30 25 22 20 22 25 26 32
20 FT WIND DIR..E E E E SE SE SE E E E E
20 FT WIND SPD..5 3 3 3 3 3 3 3 3 5 5
20 FT WIND GUST.7 7 7 7 7 8 10 13 14 14 13
MIX HGT (KFT)...0.6 0.9 2.1 5.4 9.2 10 11 10 9.3 7.4 6.9
TRANSP WIND DIR.E E SE SE SE SE SE S S SE SE
TRANSP WIND SPD.6 6 7 7 8 8 8 8 9 9 12
VRATE KT-FT/1K..3 5 13 32 64 73 75 71 75 59 69
SMOKEDISPERSION.P P P P G G G G G F G
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (60-70 PERCENT) UNTIL 2400, THEN
PARTLY CLOUDY (30-40 PERCENT). SLIGHT CHANCE OF
THUNDERSTORMS UNTIL 2100. CHANCE OF SHOWERS
UNTIL 2400, THEN SLIGHT CHANCE OF SHOWERS.
CWR.................26 PERCENT DECREASING TO 10 PERCENT OVERNIGHT.
CHANCE OF THUNDER...24 PERCENT.
MIN TEMPERATURE.....AROUND 59.
MAX HUMIDITY........65 PERCENT.
WIND (20 FT)........EAST WINDS 5 TO 7 MPH UNTIL 2400, THEN
VARIABLE UP TO 5 MPH. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS UNTIL 2100.
MIXING HEIGHT.......3400 FT AGL UNTIL 1900. BELOW 1000 FT AGL AFTER
2000.
TRANSPORT WINDS.....NORTHEAST 10 TO 15 MPH UNTIL 2000. SOUTH 8 TO 9
MPH AFTER 0400.
SMOKE DISPERSAL.....POOR.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........63 63 63 63 63 63 40 39 35 30 33 30
WEATHER COV.....CHC CHC CHC CHC CHC CHC SCH SCH SCH SCH SCH SCH
WEATHER TYPE....RW RW RW RW RW RW RW RW RW RW RW RW
TSTM COV........SCH SCH SCH
CWR.............30 30 30 30 30 30 10 10 10 10 10 10
CHC OF THDR (%).20 20 20 10 10 10 0 0 0 0 0 0
TEMP............80 78 74 72 70 68 67 65 64 63 61 60
RH..............33 36 42 44 51 52 52 53 57 59 62 64
20 FT WIND DIR..E E E E E E SE SE SE SE SE S
20 FT WIND SPD..6 6 6 6 5 5 3 3 2 2 2 1
20 FT WIND GUST.13 12 10 12 8 7 7 5 5 5 5 3
MIX HGT (KFT)...3.4 1.2 0.7 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6 0.6
TRANSP WIND DIR.NE NE E E E SE SE S S S S S
TRANSP WIND SPD.12 12 9 9 9 8 6 6 7 6 6 6
VRATE KT-FT/1K..34 12 5 5 5 4 3 3 3 3 3 3
SMOKEDISPERSION.P P P P P P P P P P P P
WEDNESDAY
SKY/WEATHER.........PARTLY CLOUDY (25-35 PERCENT) UNTIL 0800, THEN
MOSTLY SUNNY (10-20 PERCENT) UNTIL 1200, THEN
CLOUDY (90-100 PERCENT). RAIN SHOWERS WITH
THUNDERSTORMS LIKELY AFTER 1200.
CWR.................2 PERCENT INCREASING TO 69 PERCENT IN THE
AFTERNOON.
CHANCE OF THUNDER...64 PERCENT.
MAX TEMPERATURE.....AROUND 85.
MIN HUMIDITY........30 PERCENT.
WIND (20 FT)........VARIABLE UP TO 5 MPH UNTIL 1100, THEN WEST 5 TO
7 MPH UNTIL 1600, THEN SOUTHWEST AROUND 5 MPH
UNTIL 1700, THEN VARIABLE UP TO 5 MPH. GUSTY
AND ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS
AFTER 1200.
MIXING HEIGHT.......BELOW 1000 FT AGL UNTIL 0800, THEN 2900 FT AGL
UNTIL 1100, THEN 7300 FT AGL UNTIL 1300, THEN
8300 FT AGL UNTIL 1500, THEN 5400 FT AGL UNTIL
1600, THEN 2700 FT AGL.
TRANSPORT WINDS.....SOUTHWEST AROUND 8 MPH UNTIL 1000, THEN LIGHT
UNTIL 1100, THEN WEST 8 TO 12 MPH UNTIL 1500,
THEN SOUTH 9 TO 14 MPH UNTIL 1700, THEN
SOUTHWEST AROUND 8 MPH.
SMOKE DISPERSAL.....POOR UNTIL 1100, THEN FAIR UNTIL 1300, THEN
GOOD UNTIL 1400, THEN FAIR UNTIL 1600, THEN
POOR.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........30 26 18 15 13 16 93 93 93 93 93 93
WEATHER COV..... DEF DEF DEF DEF DEF DEF
WEATHER TYPE.... RW RW RW RW RW RW
TSTM COV........ LKY LKY LKY LKY LKY LKY
CWR.............0 0 0 0 0 0 70 70 70 70 70 70
CHC OF THDR (%).0 0 0 0 0 0 0 40 60 60 60 60
TEMP............60 59 65 68 77 81 83 84 82 80 79 75
RH..............63 65 57 54 39 34 31 30 33 36 39 45
20 FT WIND DIR..S S SW W W W W W W W SW SE
20 FT WIND SPD..2 2 2 2 3 5 6 6 6 6 5 3
20 FT WIND GUST.3 3 3 5 7 9 12 13 14 13 12 12
MIX HGT (KFT)...0.6 0.6 1.4 2.1 3.4 6.0 7.6 8.9 6.6 5.4 2.7 1.8
TRANSP WIND DIR.S SW SW SW W W W W W S S SW
TRANSP WIND SPD.6 5 5 5 7 8 8 10 8 10 12 8
VRATE KT-FT/1K..3 2 6 9 20 42 54 80 46 48 27 13
SMOKEDISPERSION.P P P P P F F G F F P P
FORECASTER...RPK
REQUESTED BY...MELISSA MCKIBBEN
TYPE OF REQUEST...WILDFIRE
.TAG 2617813.1/BOU
.DELDT 07/21/26
.FORMATTERVERSION 2.0.0
.EMAIL CONCC@FIRENET.GOV
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