216
FNUS75 KBOU 142138
FWSBOU
SPOT FORECAST FOR DADD GULCH...NORTHERN COLORADO COMMUNICATIONS
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
338 PM MDT MON SEP 14 2026
IF CONDITIONS BECOME UNREPRESENTATIVE...CONTACT THE NATIONAL WEATHER
SERVICE.
DISCUSSION
THERE IS CURRENTLY A RAIN SHOWER AROUND 10 MILES TO THE
SOUTH/SOUTHEAST OF THIS LOCATION. AS OF 3:30PM, THIS SHOWER IS NOT
EXPECTED TO IMPACT THE AREA AND IS NOT PRODUCING LIGHTNING. CHANCES
OF LIGHTNING WILL REMAIN LOW (20%) THROUGH THE AFTERNOON.
ADDITIONAL SHOWERS WILL HAVE THE POTENTIAL TO DEVELOP NEAR THE
AREA FOR MUCH OF THE EVENING AND THROUGH THE OVERNIGHT PERIOD.
RAIN CHANCES WILL RANGE FROM 25% TO 50%, WITH THE HIGHEST CHANCES
FOR RAIN AND POTENTIAL LIGHTNING OVER THE NEXT FEW HOURS. WINDS
WILL BE GUSTY THIS AFTERNOON AND EARLY EVENING. WINDS WILL GENERALLY
BE FROM THE WEST AROUND 10 TO 15MPH, WITH OCCASIONAL GUSTS AROUND
20 TO 30MPH. THE EXCEPTION TO THIS WILL BE ERRATIC WIND SHIFTS
AND GUSTS FROM NEARBY SHOWERS AS THEY PASS NEAR THE AREA. SHOWERS
COULD PRODUCE GUSTS AROUND 30 TO 40MPH THIS AFTERNOON AND EARLY
EVENING. RELATIVE HUMIDITY VALUES ARE IN THE LOW 20S THIS
AFTERNOON, BUT SHOULD GRADUALLY INCREASE STARTING AROUND 6PM.
WINDS WILL START TO WEAKEN AROUND 8PM, WITH WINDS SHIFTING MORE
NORTHEASTERLY, THEN BECOMING MORE LIGHT AND VARIABLE OVERNIGHT. RHS
WILL RECOVER TO AROUND 82% OVERNIGHT.
WINDS WILL START TO INCREASE FROM THE EAST AROUND 9AM TOMORROW,
WITH SPEEDS AROUND 10 TO 15MPH AND GUSTS AROUND 20MPH THROUGH THE
EARLY AFTERNOON. SURFACE WINDS WILL START TO TURN MORE SOUTHERLY
STARTING AROUND 4PM. MINIMUM RHS WILL BE HIGHER TOMORROW, WITH A
RHS STAYING ABOVE 45% ALL AFTERNOON. RAIN CHANCES WILL START TO
INCREASE AGAIN IN THE EARLY AFTERNOON TOMORROW. THERE WILL BE
POTENTIAL FOR A FEW ISOLATED THUNDERSTORMS AROUND THE AREA WITH
THIS ACTIVITY.
REST OF TODAY
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT) UNTIL 1600, THEN
MOSTLY CLOUDY (45-55 PERCENT). SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS.
CWR.................6 PERCENT.
CHANCE OF THUNDER...15 PERCENT.
MAX TEMPERATURE.....AROUND 74.
MIN HUMIDITY........25 PERCENT.
WIND (20 FT)........WEST WINDS 12 TO 17 MPH WITH GUSTS TO AROUND 24
MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS.
MIXING HEIGHT.......8500 FT AGL.
TRANSPORT WINDS.....WEST 28 TO 33 MPH.
SMOKE DISPERSAL.....EXCELLENT.
TIME (MDT) 3PM 4PM 5PM
SKY (%).........44 51 52
WEATHER COV.....SCH SCH SCH
WEATHER TYPE....RW RW RW
TSTM COV........SCH SCH SCH
CWR.............10 10 10
CHC OF THDR (%).20 20 20
TEMP............73 72 72
RH..............26 25 26
20 FT WIND DIR..W W W
20 FT WIND SPD..15 15 14
20 FT WIND GUST.24 24 22
MIX HGT (KFT)...8.7 8.2 7.3
TRANSP WIND DIR.W W W
TRANSP WIND SPD.33 30 28
VRATE KT-FT/1K..252 214 175
SMOKEDISPERSION.E E E
TONIGHT
SKY/WEATHER.........MOSTLY CLOUDY (50-60 PERCENT). CHANCE OF RAIN
SHOWERS.
CWR.................14 PERCENT INCREASING TO 17 PERCENT OVERNIGHT.
CHANCE OF THUNDER...7 PERCENT.
MIN TEMPERATURE.....AROUND 44.
MAX HUMIDITY........82 PERCENT.
WIND (20 FT)........WEST WINDS 6 TO 12 MPH WITH GUSTS TO AROUND 21
MPH UNTIL 2200, THEN NORTHWEST 5 TO 13 MPH
UNTIL 2400, THEN 5 TO 8 MPH UNTIL 0400, THEN
AROUND 5 MPH UNTIL 0500, THEN SOUTH.
MIXING HEIGHT.......6800 FT AGL UNTIL 1900. BELOW 1000 FT AGL AFTER
2100.
TRANSPORT WINDS.....WEST AROUND 25 MPH UNTIL 1900, THEN 9 TO 14 MPH
UNTIL 0100, THEN NORTHWEST 8 TO 12 MPH UNTIL
0300, THEN EAST AROUND 8 MPH UNTIL 0400, THEN
SOUTH UNTIL 0500, THEN SOUTHEAST AROUND 9 MPH.
SMOKE DISPERSAL.....VERY GOOD UNTIL 1900. POOR AFTER 2400.
TIME (MDT) 6PM 7PM 8PM 9PM 10P 11P MID 1AM 2AM 3AM 4AM 5AM
SKY (%).........61 61 61 61 51 51 51 59 59 59 59 59
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........
CWR.............10 10 10 10 10 10 10 20 20 20 20 20
CHC OF THDR (%).0 0 0 10 10 10 10 10 10 0 0 0
TEMP............70 67 63 60 58 55 55 53 51 50 48 46
RH..............30 39 46 51 53 57 55 64 66 68 74 76
20 FT WIND DIR..W W W W NW NW N NW N NW NW S
20 FT WIND SPD..13 8 6 5 7 8 8 8 7 5 5 5
20 FT WIND GUST.21 13 9 7 12 13 13 13 12 7 7 7
MIX HGT (KFT)...6.8 2.9 1.0 0.6 0.6 0.5 0.5 0.5 0.6 0.6 0.5 0.6
TRANSP WIND DIR.W W W W W W W NW NW E S SE
TRANSP WIND SPD.25 14 10 9 10 12 9 10 9 8 8 9
VRATE KT-FT/1K..149 34 9 5 5 6 4 5 5 4 4 4
SMOKEDISPERSION.VG P P P P P P P P P P P
TUESDAY
SKY/WEATHER.........PARTLY CLOUDY (40-50 PERCENT) UNTIL 1100, THEN
MOSTLY CLOUDY (65-75 PERCENT). SLIGHT CHANCE OF
RAIN SHOWERS UNTIL 1200, THEN CHANCE OF RAIN
SHOWERS AND THUNDERSTORMS.
CWR.................6 PERCENT INCREASING TO 24 PERCENT IN THE
AFTERNOON.
CHANCE OF THUNDER...26 PERCENT.
MAX TEMPERATURE.....AROUND 67.
MIN HUMIDITY........46 PERCENT.
WIND (20 FT)........SOUTH WINDS AROUND 5 MPH UNTIL 0700, THEN
SOUTHEAST 6 TO 12 MPH. GUSTY AND ERRATIC WINDS
EXPECTED NEAR THUNDERSTORMS AFTER 1200 UNTIL
1500GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS AFTER 1500.
MIXING HEIGHT.......BELOW 1000 FT AGL UNTIL 0900, THEN 3200 FT AGL.
TRANSPORT WINDS.....SOUTHEAST 9 TO 16 MPH.
SMOKE DISPERSAL.....POOR.
TIME (MDT) 6AM 7AM 8AM 9AM 10A 11A 12P 1PM 2PM 3PM 4PM 5PM
SKY (%).........43 43 43 43 50 62 75 75 75 75 75 75
WEATHER COV.....SCH SCH SCH SCH SCH SCH 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 CHC CHC CHC
CWR.............10 10 10 10 10 10 20 20 20 20 20 20
CHC OF THDR (%).0 0 0 0 0 0 20 20 20 30 30 30
TEMP............46 44 46 49 54 58 61 62 64 64 65 63
RH..............76 82 76 68 57 51 48 48 46 48 48 56
20 FT WIND DIR..S SE SE SE SE SE SE SE SE SE SE SE
20 FT WIND SPD..5 5 7 7 7 9 9 10 10 10 12 12
20 FT WIND GUST.7 7 12 12 12 15 15 16 16 16 18 18
MIX HGT (KFT)...0.6 0.5 0.9 1.4 2.1 2.5 2.7 3.1 3.4 2.9 3.0 2.1
TRANSP WIND DIR.S SE SE SE SE SE SE SE S SE S S
TRANSP WIND SPD.9 10 10 10 12 13 14 13 12 12 14 16
VRATE KT-FT/1K..5 5 8 13 21 28 32 34 34 29 36 30
SMOKEDISPERSION.P P P P P P P P P P P P
FORECASTER...PETTETT
REQUESTED BY...DENNIS FINNEGAN
TYPE OF REQUEST...WILDFIRE
.TAG 2621874.0/BOU
.DELDT 09/14/26
.FORMATTERVERSION 2.0.0
.EMAIL CONCC@FIRENET.GOV
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