968
FXUS65 KFGZ 141048
AFDFGZ

Area Forecast Discussion
National Weather Service Flagstaff AZ
348 AM MST Mon Jul 14 2025

.SYNOPSIS...Expect hot temperatures to continue through Tuesday,
with isolated to scattered showers and thunderstorms, some with
gusty winds but mostly light rainfall. A gradual uptick in
moisture is forecast during the mid to late week period, with a
potential for much wetter conditions.

&&

.DISCUSSION...Today and Tuesday...High pressure continue to gradually
shift eastward through the start of this week. As this occurs,
moisture looks to gradually increase each day across northern
Arizona. Hi-res guidance this morning points towards the higher
terrain again being the main focus this afternoon, eventually
moving off the terrain later this afternoon as outflow boundaries
begin to drive the show. Tuesday looks to be a similar story, with
just a slight uptick in coverage and intensity. For each day, the
main threats will mainly be gusty outflow winds, though a couple
brief downpours in any stronger storm will be possible.

Wednesday onward...A more traditional monsoonal pattern looks to
take hold by the middle of next week, as weak trough setting up over
the Gulf of California and high pressure remains situated to the
east. This allows for sub-tropical moisture to be advected northward
across much of Arizona, resulting in daily chances for showers and
thunderstorms returning. Added dynamics from the trough will also
aid in thunderstorm development, likely leading to an increased risk
of flash flooding later this week. Day-to-day coverage will be
largely controlled by the exact positioning of the high, as well as
any remnant debris clouds from the previous day. Convection does
look to peak late Wednesday and Thursday as upper-level dynamics
from the trough look to be overhead.

&&

.AVIATION...Monday 14/12Z through Tuesday 15/12Z...VFR conditions.
ISO-SCT -SHRA/-TSRA from 19Z to 03Z, most numerous over the high
terrain. Winds VRB 5-15 kts with gusts to 20 kts in the afternoon.
Gusty, erratic out flow winds in and around TS.

OUTLOOK...Tuesday 15/12Z through Thursday 17/12Z...Daily chances for
SHRA/TSRA each day, most numerous over the high terrain. Brief MVFR
conditions along with gusty, erratic outflow winds in and around
TSRA. Otherwise, VFR conditions with daytime winds W/SW 10-15 kts,
becoming VRB 5-10 kts overnight.

&&

.FIRE WEATHER...Today and Tuesday...Increasing chances of showers
and thunderstorms each day, especially south of the I-40 corridor.
Daytime winds variable at 5-15 mph, with gusts to 20 mph Monday,
becoming west/southwest for Tuesday. Gusty, erratic winds possible
in and around thunderstorms.

Wednesday through Friday...Cooling temperatures and widespread
shower and thunderstorm activity. Wetting rains are likely with
stronger storms. Winds west through southwest at 5-15 mph, with gust
to 20 mph, each day. Gusty, erratic winds possible in and around
thunderstorms.

&&

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

&&

$$

PUBLIC...Humphreys
AVIATION...Humphreys
FIRE WEATHER...Humphreys

For Northern Arizona weather information visit
weather.gov/flagstaff