791
FNUS75 KBOU 131451
FWSBOU
SPOT FORECAST FOR STELLIE...FOREST SERVICE
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
851 AM MDT THU AUG 13 2026
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
SHOWERS AND THUNDERSTORMS, MOST WITH WETTING RAINS,
WILL BE LIKELY TODAY. WHILE A FEW BRIEF AND MOSTLY LIGHT SHOWERS
WILL BE POSSIBLE THIS MORNING, THE HIGHEST COVERAGE IS EXPECTED
TO OCCUR BETWEEN 1 AND 6 PM. TEMPERATURES WILL BE COOLER WITH MUCH
HIGHER HUMIDITY LEVELS UNDER MOSTLY CLOUDY SKIES. NO SIGNIFICANT
WINDS ARE EXPECTED OUTSIDE OF THUNDERSTORMS, WHEN WINDS MAY GUST
TO 35 MPH.
HUMIDITY RECOVERY TONIGHT WILL BE HIGH, WITH A FEW SHOWERS
POTENTIALLY LINGERING OVERNIGHT.
FRIDAY LOOKS VERY SIMILAR TO TODAY, WITH NUMEROUS WETTING SHOWERS
AND STORMS IN THE AFTERNOON AND EVENING.
REST OF TODAY
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT). CHANCE OF
SHOWERS AND SLIGHT CHANCE OF THUNDERSTORMS
UNTIL 1200, THEN SHOWERS AND THUNDERSTORMS
LIKELY UNTIL 1500, THEN SHOWERS AND
THUNDERSTORMS.
CWR.................7 PERCENT INCREASING TO 75 PERCENT IN THE
AFTERNOON.
CHANCE OF THUNDER...77 PERCENT.
MAX TEMPERATURE.....AROUND 72.
MIN HUMIDITY........51 PERCENT.
WIND (20 FT)........VARIABLE UP TO 5 MPH UNTIL 1200, THEN EAST
AROUND 5 MPH UNTIL 1300, THEN VARIABLE UP TO 5
MPH UNTIL 1400, THEN EAST 5 TO 7 MPH. GUSTY AND
ERRATIC WINDS EXPECTED NEAR THUNDERSTORMS.
MIXING HEIGHT.......3000 FT AGL.
TRANSPORT WINDS.....LIGHT WINDS UNTIL 1000, THEN SOUTH AROUND 8 MPH
UNTIL 1200, THEN 8 TO 11 MPH UNTIL 1500, THEN
LIGHT UNTIL 1600, THEN SOUTH 8 TO 11 MPH.
SMOKE DISPERSAL.....POOR.
TIME (MDT) 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........65 56 70 81 82 81 85 85 85
WEATHER COV.....CHC CHC CHC LKY LKY LKY DEF DEF DEF
WEATHER TYPE....RW RW RW RW RW RW RW RW RW
TSTM COV........SCH SCH SCH LKY LKY LKY DEF DEF DEF
CWR.............10 10 10 70 70 70 80 80 80
CHC OF THDR (%).20 20 20 70 70 70 80 80 80
TEMP............61 67 68 70 67 66 67 67 66
RH..............67 54 55 51 59 65 63 63 65
20 FT WIND DIR..NE E E E E E E E E
20 FT WIND SPD..2 2 3 5 3 5 5 5 5
20 FT WIND GUST.3 3 6 7 6 7 7 7 7
MIX HGT (KFT)...2.0 3.5 4.3 4.6 4.1 3.6 2.8 1.6 1.6
TRANSP WIND DIR.E S S S S S S S SE
TRANSP WIND SPD.5 5 6 7 7 9 7 8 8
VRATE KT-FT/1K..8 14 22 28 25 29 17 12 11
SMOKEDISPERSION.P P P P P P P P P
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (65-75 PERCENT) UNTIL 2400, THEN
PARTLY CLOUDY (40-50 PERCENT). RAIN SHOWERS
LIKELY AND CHANCE OF THUNDERSTORMS UNTIL 2100,
THEN CHANCE OF RAIN SHOWERS AND SLIGHT CHANCE
OF THUNDERSTORMS UNTIL 2400.
CWR.................41 PERCENT DECREASING TO 4 PERCENT.
CHANCE OF THUNDER...51 PERCENT.
MIN TEMPERATURE.....AROUND 54.
MAX HUMIDITY........80 PERCENT.
WIND (20 FT)........VARIABLE UP TO 5 MPH UNTIL 2000, THEN SOUTH
AROUND 5 MPH UNTIL 2200, THEN SOUTHWEST UNTIL
2400, THEN 5 TO 6 MPH. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS UNTIL 2400.
MIXING HEIGHT.......1100 FT AGL UNTIL 2000, THEN BELOW 1000 FT AGL
UNTIL 0300, THEN 1200 FT AGL UNTIL 0400, THEN
BELOW 1000 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 8 MPH UNTIL 1900, THEN LIGHT UNTIL
2000, THEN SOUTH AROUND 8 MPH UNTIL 2200, THEN
WEST 8 TO 12 MPH.
SMOKE DISPERSAL.....POOR.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........78 85 79 61 59 59 34 33 28 36 36 20
WEATHER COV.....LKY LKY LKY CHC CHC CHC
WEATHER TYPE....RW RW RW RW RW RW
TSTM COV........CHC CHC CHC SCH SCH SCH
CWR.............40 40 40 30 30 30 0 0 0 0 0 0
CHC OF THDR (%).50 50 50 20 20 20 10 10 10 0 0 0
TEMP............64 63 61 61 61 60 59 59 58 57 56 56
RH..............70 72 75 75 72 72 72 72 72 75 74 72
20 FT WIND DIR..SE SE S SW SW SW SW SW SW SW SW SW
20 FT WIND SPD..3 3 3 3 3 3 3 3 5 5 6 6
20 FT WIND GUST.6 6 6 6 6 6 6 6 7 7 9 9
MIX HGT (KFT)...1.7 1.1 0.7 0.6 0.5 0.6 0.8 0.6 0.8 1.2 0.8 0.6
TRANSP WIND DIR.S SW S SW SW W W W W W W W
TRANSP WIND SPD.8 6 5 6 6 7 9 9 9 10 12 9
VRATE KT-FT/1K..12 6 3 3 3 3 7 5 7 11 8 5
SMOKEDISPERSION.P P P P P P P P P P P P
FRIDAY
SKY/WEATHER.........PARTLY CLOUDY (30-40 PERCENT) UNTIL 1100, THEN
MOSTLY CLOUDY (80-90 PERCENT). SLIGHT CHANCE OF
RAIN SHOWERS AFTER 0900 UNTIL 1200, THEN RAIN
SHOWERS AND THUNDERSTORMS LIKELY UNTIL 1600,
THEN RAIN SHOWERS AND THUNDERSTORMS.
CWR.................5 PERCENT INCREASING TO 79 PERCENT.
CHANCE OF THUNDER...76 PERCENT.
MAX TEMPERATURE.....AROUND 74.
MIN HUMIDITY........43 PERCENT.
WIND (20 FT)........WEST WINDS 5 TO 7 MPH UNTIL 0900, THEN VARIABLE
UP TO 5 MPH UNTIL 1300, THEN EAST 5 TO 7 MPH.
GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS AFTER 1200.
MIXING HEIGHT.......BELOW 1000 FT AGL UNTIL 0900, THEN 4000 FT AGL
UNTIL 1100, THEN 7900 FT AGL UNTIL 1500, THEN
2700 FT AGL.
TRANSPORT WINDS.....WEST 8 TO 11 MPH UNTIL 1200, THEN SOUTHWEST
8 TO 12 MPH UNTIL 1500, THEN EAST AROUND 10 MPH
UNTIL 1600, THEN NORTH AROUND 8 MPH UNTIL 1700,
THEN NORTHWEST.
SMOKE DISPERSAL.....POOR UNTIL 1200, THEN FAIR UNTIL 1300, THEN
GOOD UNTIL 1500, THEN POOR.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........16 29 12 33 33 33 80 80 80 91 91 90
WEATHER COV..... SCH SCH SCH LKY LKY LKY LKY DEF DEF
WEATHER TYPE.... RW RW RW RW RW RW RW RW RW
TSTM COV........ LKY LKY LKY LKY DEF DEF
CWR.............0 0 0 10 10 10 70 70 70 70 80 80
CHC OF THDR (%).0 0 0 10 10 10 60 60 60 70 80 80
TEMP............55 54 56 60 68 70 73 70 69 70 68 67
RH..............72 77 80 69 51 47 43 49 55 53 59 61
20 FT WIND DIR..W W W W NW E E E E E E E
20 FT WIND SPD..6 6 5 3 2 2 3 5 6 6 5 5
20 FT WIND GUST.9 9 7 6 3 3 6 7 9 9 7 7
MIX HGT (KFT)...0.5 0.5 0.8 2.4 4.5 6.1 7.2 8.6 7.0 3.8 1.5 1.1
TRANSP WIND DIR.W W W W W W S SW S E N NW
TRANSP WIND SPD.9 9 8 7 6 7 8 10 10 10 8 8
VRATE KT-FT/1K..4 4 6 14 23 36 50 77 63 34 10 7
SMOKEDISPERSION.P P P P P P F G G P P P
FORECASTER...BARJENBRUCH
REQUESTED BY...RACHEL FERRELL
TYPE OF REQUEST...WILDFIRE
.TAG 2619619.0/BOU
.DELDT 08/13/26
.FORMATTERVERSION 2.0.0
.EMAIL COPBC@FIRENET.GOV,RFERRELL@BLM.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page