001
FNUS75 KFGZ 220852
FWSFGZ

Spot Forecast for Three Sisters...USFS
National Weather Service Flagstaff AZ
152 AM MST Wed May 22 2024

Forecast is based on ignition time of 0500 MST on May 22.
If conditions become unrepresentative, contact the
National Weather Service in Flagstaff, AZ

.DISCUSSION...Dry conditions will continue. Look for gusty southwest winds
each afternoon. Minimum RH values will remain in the 10-15% range
through Wednesday. Nighttime drainage flow will be minimal after this
morning as strengthening southwest flow aloft will inhibit the development
of a deep surface inversions.


.TODAY...

Sky/weather.........Sunny.
Chance of pcpn......0 percent.
Max temperature.....Around 71.
Min humidity........12 percent.
Wind (20 ft)........Southeast winds around 5 mph until 7:00 AM becoming
                    southwest at 5 to 15 mph. Afternoon gusts to 25 mph.
LAL.................1.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Max Vent Rate.......Excellent.
Clearing Index......1667.
Mixing height.......9600 ft AGL.
Transport winds.....Southwest 10 to 15 knots increasing to around
                    20 knots late in the afternoon.

.TONIGHT...

Sky/weather.........Clear.
Chance of pcpn......0 percent.
Min temperature.....Around 40.
Max humidity........45 percent.
Wind (20 ft)........Southwest winds around 5 mph.
LAL.................1.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Min Vent Rate.......Poor. Dry
Clearing Index......4.
Mixing height.......100 ft AGL.
Transport winds.....Southwest around 10 knots.

.THURSDAY...

Sky/weather.........Sunny. Areas of smoke.
Chance of pcpn......0 percent.
Max temperature.....Around 70.
Min humidity........5 percent.
Wind (20 ft)........Southwest winds around 5 mph until 8:00 AM increasing to
                    10 to 20 mph. Afternoon gusts to 30 mph.
LAL.................1.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Max Vent Rate.......Excellent.
Clearing Index......1861.
Mixing height.......8300 ft AGL.
Transport winds.....Southwest 15 to 20 knots.

For Friday and Saturday...Late morning and afternoon winds southwest at 10 to 20 mph
gusting to near 35 mph. Minimum RH values will be on the increase ranging between 15-20% on
Friday and then 20-25% on Saturday. Daytime ventilation will remain excellent and the potential
plume dominated fire growth low. See the Fire Weather Zone forecast for additional
details.

$$
Forecaster...MCCOLLUM
Requested by...Cody Payne
Type of request...PRESCRIBED
.TAG 2414844.0/FGZ
.DELDT 05/22/24
.FormatterVersion 2.0.0
.EMAIL Cody.payne@usda.gov,Michael.uebel@usda.gov,Wyler.heffelfinger@usda.gov