525
FNUS75 KFGZ 180856
FWSFGZ
SPOT FORECAST FOR BIG BUG PILES...USFS
NATIONAL WEATHER SERVICE FLAGSTAFF AZ
156 AM MST TUE NOV 18 2025
FORECAST IS BASED ON IGNITION TIME OF 0600 MST ON NOVEMBER 18.
IF CONDITIONS BECOME UNREPRESENTATIVE, CONTACT THE
NATIONAL WEATHER SERVICE IN FLAGSTAFF, AZ
DISCUSSION
LOOK FOR RAIN SHOWERS WITH A STRAY THUNDERSTORM
POSSIBLE THROUGH WEDNESDAY. WINDS GENERALLY FROM THE SOUTH TO
SOUTHEAST AT 10 TO 20 MPH. VENTILATION GOOD TODAY BUT LOWERING
TO MARGINAL ON WEDNESDAY WITH A DECREASED VERTICAL
MIXING DEPTH. DRAINAGE FLOW WILL BE NONEXISTENT.
TODAY
SKY/WEATHER.........CLOUDY. RAIN SHOWERS THROUGH THE DAY. CHANCE
OF THUNDERSTORMS.
CHANCE OF PCPN......90 PERCENT.
MAX TEMPERATURE.....42 TO 45.
MIN HUMIDITY........85 TO 95 PERCENT.
WIND (20 FT)........SOUTH WINDS 10 TO 15 MPH WITH GUSTS TO AROUND
30 MPH. GUSTY AND ERRATIC WINDS EXPECTED NEAR
THUNDERSTORMS.
MAX VENT RATE.......GOOD.
CLEARING INDEX......481.
MIXING HEIGHT.......2300 FT AGL.
TRANSPORT WINDS.....SOUTH 15 TO 20 KNOTS.
TONIGHT
SKY/WEATHER.........CLOUDY. RAIN SHOWERS THROUGH THE NIGHT. CHANCE
OF THUNDERSTORMS.
CHANCE OF PCPN......80 PERCENT.
MIN TEMPERATURE.....36 TO 40.
MAX HUMIDITY........90 TO 100 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 TO 15 MPH. GUSTY AND ERRATIC
WINDS EXPECTED NEAR THUNDERSTORMS.
MIN VENT RATE.......MARGINAL.
CLEARING INDEX......101.
MIXING HEIGHT.......500 FT AGL.
TRANSPORT WINDS.....SOUTH AROUND 15 KNOTS.
WEDNESDAY
SKY/WEATHER.........CLOUDY. RAIN SHOWERS AND SLIGHT CHANCE OF
THUNDERSTORMS.
CHANCE OF PCPN......90 PERCENT.
MAX TEMPERATURE.....39 TO 43.
MIN HUMIDITY........85 TO 95 PERCENT.
WIND (20 FT)........SOUTH WINDS 5 TO 10 MPH THROUGH NOON THEN
SHIFTING TO SOUTHEAST. GUSTY AND ERRATIC
WINDS EXPECTED NEAR THUNDERSTORMS.
MAX VENT RATE.......MARGINAL.
CLEARING INDEX......181.
MIXING HEIGHT.......1600 FT AGL.
TRANSPORT WINDS.....SOUTH 10 TO 15 KNOTS SHIFTING TO THE SOUTHEAST
AROUND 5 KNOTS LATE IN THE AFTERNOON.
A WEATHER FORECAST TABLE FOR YOUR SPOT LOCATION IS LINKED.
THE INFORMATION PROVIDED BY THIS SITE IS FOR PLANNING PURPOSES ONLY
AND IS NOT INTENDED TO SUBSTITUTE INFORMATION PROVIDED BY AN OFFICIAL
NATIONAL WEATHER SERVICE SPOT FORECAST.
HTTPS://WWW.WEATHER.GOV/DLH/FWD?LAT=34.3966&LON=-112.3651&CLAT=34.3966&CLON=-112.3651
FORECASTER...MCCOLLUM
REQUESTED BY...ERIC JELINEK
TYPE OF REQUEST...PRESCRIBED
.TAG 2526132.0/FGZ
.DELDT 11/18/25
.FORMATTERVERSION 2.0.0
.EMAIL ANTHONY.KONTZ@USDA.GOV,ERIC.JELINEK@USDA.GOV
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page