276
FXUS65 KFGZ 141702
AFDFGZ

Area Forecast Discussion
National Weather Service Flagstaff AZ
1002 AM MST Sat Jun 14 2025

.SYNOPSIS...A strong area of high pressure will remain over the
region for the next few days, bringing seasonably warm
temperatures and dry conditions. A weak short-wave looks to slide
through early next week, mainly increasing winds and slightly
dropping afternoon highs.

&&

.UPDATE...The building ridge begins to peak in intensity today,
and a hot day is in store. Temperatures will reach 5-10 degrees
above average for this time of year. Winds will be fairly
moderate, generally 10-15 mph with the occasional gust to 25 mph.
An Extreme Heat Warning goes into effect at 10 AM MST for the
Grand Canyon at elevations below 4000`, with temperatures
expected to reach 110 degrees. The current forecast is on track,
no changes at this time,

&&

.PREV DISCUSSION /431 AM MST/...High pressure continues to build into
the area with heights peaking on Sunday. Main consequence of this
feature will be the warmest temperatures seen so far this year
with highs peaking 5 to 10 degrees above mid June averages, with
no records expected to be reached. An Excessive Heat Warning is
now in effect starting today and lasting into Monday evening for
areas below 4000 feet in the Grand Canyon, so for any hikers
thinking about venturing below the Rims, plan accordingly or
consider postponing your hike for another time.

Monday and Tuesday a weak shortwave brushes by to the north and
flattens the ridge for a couple days. No precipitation expected
and temperatures back off a few degrees but do expect winds to
pick up out of the southwest between 15 and 25 mph with gusts 30
to 35 mph. Minimum Relative Humidity values will be at 5-10% each
day so we will be approaching critical or near critical fire
weather conditions, especially in the Little Colorado River
Valley. Will keep monitoring the situation to determine whether or
not fire weather headlines will be needed.

High pressure will begin to rebound into the area starting on
Wednesday. This will keep things dry with maximum temperatures
reaching 5 to 10 degrees above average again through the end of
the week.

&&

.AVIATION...Saturday 14/18Z through Sunday 15/18Z...VFR expected.
SW winds 10-15 kts with gusts 20-25 kts, becoming light and
variable after 03Z.

OUTLOOK...Sunday 15/18Z through Tuesday 17/18Z...VFR expected.
SW winds 10-15 kts with gusts to 25 kts on Sunday, increasing to
10-20 kts with gusts to 30 kts on Monday and Tuesday.

&&

.FIRE WEATHER...Today and Sunday...Hot and dry with temperatures 5-
10 degrees above normal. Minimum RH 5-10% and SW winds 10-20 mph
with gusts 20-25 mph both days.

Monday through Wednesday...Hot and dry with temperatures 5-10
degrees above normal. Minimum RH 5-10% each day. SW-W winds 15-25
mph with gusts 25-35 mph on Monday and Tuesday, becoming 5-15 mph on
Wednesday. Near-critical to critical fire weather concerns on Monday
and Tuesday, mainly along the Little Colorado River Valley.

&&

.FGZ WATCHES/WARNINGS/ADVISORIES...
Extreme Heat Warning until 7 PM MST Monday for AZZ006.

&&

$$

PUBLIC...Lewandowski/Bernhart
AVIATION...Meola
FIRE WEATHER...Meola

For Northern Arizona weather information visit
weather.gov/flagstaff