509
FNUS75 KFGZ 210920
FWSFGZ

Spot Forecast for Three Sisters...USFS
National Weather Service Flagstaff AZ
220 AM MST Tue May 21 2024

Forecast is based on ignition time of 0500 MST on May 21.
If conditions become unrepresentative, contact the
National Weather Service in Flagstaff, AZ

.DISCUSSION...Dry conditions with slightly cooler than normal
temperatures are expected. Lighter but still breezy afternoon
winds are expected today. Gradually increasing winds are expected
through the week, peaking on Friday.

.TODAY...

Sky/weather.........Sunny.
Chance of pcpn......0 percent.
Max temperature.....Around 69.
Min humidity........13 percent.
Wind (20 ft)........Southwest winds 5 to 10 mph, gusts up to 20 mph.
LAL.................1.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Max Vent Rate.......Excellent.
Clearing Index......1600.
Mixing height.......10800 ft AGL.
Transport winds.....Southwest around 15 knots.

.TONIGHT...

Sky/weather.........Clear.
Chance of pcpn......0 percent.
Min temperature.....Around 35.
Max humidity........52 percent.
Wind (20 ft)........Southwest winds around 5 mph shifting to the
                    southeast after midnight.
LAL.................1.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Min Vent Rate.......Poor.
Clearing Index......2.
Mixing height.......0 ft AGL.
Transport winds.....Southwest 5 to 10 knots shifting to the
                    southeast overnight.

.WEDNESDAY...

Sky/weather.........Sunny.
Chance of pcpn......0 percent.
Max temperature.....Around 71.
Min humidity........14 percent.
Wind (20 ft)........Southwest winds 5 to 10 mph, gusts up to 20 mph.
LAL.................1.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Max Vent Rate.......Excellent.
Clearing Index......2032.
Mixing height.......11800 ft AGL.
Transport winds.....Southwest 10 to 15 knots increasing to around
                    20 knots late in the afternoon.

.FORECAST DAYS 3 THROUGH 5...
.THURSDAY...Southwest winds 15 to 20 mph with gusts 25 to 35 mph.
.FRIDAY...Southwest winds 15 to 25 mph with gusts to 30 to 40 mph.
.SATURDAY...Southwest winds 15 to 20 mph with gusts 25 to 30 mph.

$$
Forecaster...HUMPHREYS
Requested by...Wyler Heffelfinger
Type of request...PRESCRIBED
.TAG 2414770.0/FGZ
.DELDT 05/21/24
.FormatterVersion 2.0.0
.EMAIL wyler.heffelfinger@usda.gov,cody.payne@usda.gov,michael.uebel@usda.gov