160
FXUS65 KGJT 010518
AFDGJT

Area Forecast Discussion
National Weather Service Grand Junction CO
1118 PM MDT Wed Sep 30 2026

.KEY MESSAGES...

- High pressure builds into the region and temperatures trend
  upward over the coming days.

- Quiet weather conditions return through the weekend.

- Models hint at the possibility of more tropical moisture
  bringing showers to the region early next week.

&&

.DISCUSSION...
Issued at 1006 PM MDT Wed Sep 30 2026

As low pressure finally lifts out onto the Plains early this
morning, the persistent stream of remnant tropical storm
moisture goes with it. Flash flood Watches were cancelled as
rivers continue to recede. Rain soaked portions of the CWA will
finally see some sunshine on Thursday as high pressure builds
into the region. Parts of the Four Corners could see some
stratus ceilings and fog develop early Thursday morning, given
the pool of surface moisture laying around from 2 days of rain.
Should fog build into the area, those locales will have to wait
on sunshine until around mid day. Areas under clear skies will
see temperatures surge into the normal range and above heading
into the weekend, as high pressure arcs over the West. Highs
peak out Sunday around 5-10 degrees over normal. Light winds and
quiet weather conditions will make for a rather nice weekend
for leaf peepers.

A couple of features materialize in the models late in the
weekend that hint at some additional showers. Nothing in the
form of a major pattern shift emerges though. A pinched off
low/open wave works through the Great Basin late Sunday.
Meanwhile, whatever is left of Hurricane Rachel lurks along the
Baja coast. Some model guidance tries to lift a push of moisture
into the region Sunday afternoon, setting off some showers on
the San Juans. This looks like a very tentative solution, but
the models have been selling it over several runs now. This
trend continues on Monday and Tuesday with the potential for
more widespread showers on the mountains. There`s a lot of room
for this forecast to come apart by then, so we`ll hold off on
bold predictions and enjoy a few days of mild fall weather.

&&

.AVIATION /06Z TAFS THROUGH 06Z FRIDAY/...
Issued at 1118 PM MDT Wed Sep 30 2026

VFR conditions are in place as this storm system exits onto the
Plains. The biggest challenge will be fog and/stratus that
develops with low level moisture in place which is already
occurring at KDRO. So will continue to monitor satellite and
observation data overnight and update as necessary. Otherwise
sunny skies and light winds keep VFR in place tomorrow.

&&

.GJT WATCHES/WARNINGS/ADVISORIES...

CO...None.
UT...None.

&&

$$

DISCUSSION...LTB
AVIATION...TGJT