Spot Forecast
Issued by NWS Flagstaff, AZ

Home |  Current Version |  Previous Version |  Text Only |  Print | Product List |  Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21
054
FNUS75 KFGZ 241000
FWSFGZ

Spot Forecast for Three Sisters RX...USFS
National Weather Service Flagstaff AZ
300 AM MST Fri May 24 2024

Forecast is based on ignition time of 0600 MST on May 24.
If conditions become unrepresentative, contact the
National Weather Service in Flagstaff, AZ

.DISCUSSION...Dry conditions with mild temperatures continue into
Saturday. Gusty south/southwest winds are expected each afternoon,
while overnight winds may also remain slightly more elevated than
over the past couple of nights. Increasing afternoon minimum RH
each day, along with decent overnight recovery expected.

.TODAY...

Sky/weather.........Sunny.
Chance of pcpn......0 percent.
Max temperature.....70-72 degrees.
Min humidity........16-19 percent.
Wind (20 ft)........South winds 10 to 15 mph. Afternoon gusts
                    up to 25 mph.
LAL.................1.
Haines Index........4 or low potential for large plume dominated
                    fire growth.
Max Vent Rate.......Excellent.
Clearing Index......2376.
Mixing height.......9200 ft AGL.
Transport winds.....South 10 to 15 knots increasing to southwest 25
                    to 30 knots in the afternoon.

.TONIGHT...

Sky/weather.........Mostly clear.
Chance of pcpn......0 percent.
Min temperature.....40-42 degrees.
Max humidity........55-58 percent.
Wind (20 ft)........South winds around 10 mph.
LAL.................1.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.
Min Vent Rate.......Poor.
Clearing Index......10.
Mixing height.......100 ft AGL.
Transport winds.....Southwest around 20 knots becoming south around
                    10 knots in the late evening and overnight.

.SATURDAY...

Sky/weather.........Sunny.
Chance of pcpn......0 percent.
Max temperature.....68-70 degrees.
Min humidity........21-23 percent.
Wind (20 ft)........Southwest winds 10 to 15 mph. Afternoon gusts
                    up to 25 mph.
LAL.................1.
Haines Index........3 or very low potential for large plume
                    dominated fire growth.
Max Vent Rate.......Excellent.
Clearing Index......1876.
Mixing height.......8900 ft AGL.
Transport winds.....Southwest 20 to 25 knots.


.FORECAST DAYS 3 THROUGH 5...

Turning warmer with continued dry conditions. Lighter winds from
the south/southwest 10 to 15 mph. Gusts up to 20 mph in the
afternoon. Minimum afternoon RH values around 10-15%.

See the Fire Weather Planning Forecast for additional details in
the extended.

$$
Forecaster...HUMPHREYS
Requested by...Mike Uebel
Type of request...PRESCRIBED
.TAG 2415019.0/FGZ
.DELDT 05/24/24
.FormatterVersion 2.0.0
.EMAIL Michael.uebel@usda.gov,Cody.payne@usda.gov,Wyle.heffelfinger@usda.gov