FNUS75 KFGZ 200055

FWSFGZ



Spot Forecast for Billy...USFS

National Weather Service Flagstaff AZ

555 PM MST Tue Aug 19 2025



Forecast is based on forecast start time of 2100 MST on August 19. 

If conditions become unrepresentative, contact the 

National Weather Service in Flagstaff, AZ



.DISCUSSION...Shower and thunderstorm activity primarily over the White Mountains

has created an outflow boundary that is moving towards the Billy Fire. This would

bring gusty winds from the southeast, and there is moderate confidence that 

this boundary will reach the fire before stalling. The potential time of arrival

would be 6:30-7:30 PM this evening. 



An overall increase in thunderstorm activity is expected over the fire area

Wednesday and Thursday. On Wednesday, there's a 40-50% chance of showers or

thunderstorms near the fire generally between 2-6 PM MST. Showers and

thunderstorms are expected again on Thursday (50% chance). Winds will be

light from the south, but gusty near any thunderstorms. Showers and

thunderstorm chances will continue through the weekend and into next week,

with elevated humidity and light winds.





.TONIGHT...



Sky/weather.........Mostly cloudy then becoming partly cloudy. 

                    Slight chance of showers and thunderstorms late 

                    in the evening.

Chance of pcpn......20 percent. 

Min temperature.....58 to 61. 

Max humidity........60-70 percent.  

Wind (20 ft)........Southeast winds around 5 mph. Gusty and erratic 

                    winds expected near thunderstorms late in the 

                    evening. Moderate confidence in an outflow boundary

                    bringing gusty winds from the southeast 

                    arriving 6:30-7:30 pm.

Mixing height.......100 ft AGL. 

Transport winds.....Southeast around 5 knots. 



.WEDNESDAY...



Sky/weather.........Partly cloudy, becoming mostly cloudy in the afternoon. 

					Chance of showers and thunderstorms. 

Chance of pcpn......40 to 50 percent.

Max temperature.....80 to 83.

Min humidity........33 percent. 

Wind (20 ft)........Southeast winds around 5 mph. Gusty and erratic 

                    winds expected near thunderstorms. 

Mixing height.......10300 ft AGL in the morning increasing to 12600 

                    ft AGL late in the afternoon, then decreasing 

                    to 300 ft AGL late in the afternoon. 

Transport winds.....Southeast 5 to 10 knots. 



.WEDNESDAY NIGHT...



Sky/weather.........Mostly cloudy then becoming partly cloudy. 

                    Chance of showers and thunderstorms in the 

                    evening.

Chance of pcpn......30 percent. 

Min temperature.....59 to 61.  

Max humidity........70 to 80 percent. 

Wind (20 ft)........East winds around 5 mph. Gusty and erratic 

                    winds expected near thunderstorms in the 

                    evening. 

Mixing height.......100 ft AGL. 

Transport winds.....East around 5 knots. 



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=33.814&lon=-110.9406&clat=33.814&clon=-110.9406



$$

Forecaster...LEWANDOWSKI

Requested by...Cassandra Begay

Type of request...WILDFIRE

.TAG 2520254.0/FGZ

.DELDT 08/19/25

.FormatterVersion 2.0.0

.EMAIL cassandra_begay@firenet.gov