Area Forecast Discussion
Issued by NWS Grand Junction, CO

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FXUS65 KGJT 250542

Area Forecast Discussion
National Weather Service GRAND JUNCTION CO
1142 PM MDT Sat Jun 24 2017

.SHORT TERM...(Tonight through Sunday night)
Issued at 326 PM MDT Sat Jun 24 2017

High pressure will amplify over Utah and Colorado Sunday and Monday.
This will allow temperatures to creep back up...with eastern Utah
possibly reaching the triple digits again. Added areas of smoke back
into the forecast starting tonight as smoke from the actively
burning Brian Head fire is expected to reach the Four Corners

.LONG TERM...(Monday through Saturday)
Issued at 326 PM MDT Sat Jun 24 2017

A weak trough passing through eastern Utah and western Colorado on
Tuesday will allow southwest winds to increase. A sliver of
increased moisture may allow afternoon showers or thunderstorms to
develop over the highest terrain Tuesday and Wednesday, but these
are expected to be isolated. Low winds and low relative humidity may
bring marginal critical fire conditions to the region these days
(Tuesday and Wednesday) as well. Cooler air will move in on Thursday
behind this trough, which will allow temperatures to be near normal
for this time of year. Past Thursday, models diverge but model runs
the past few days have supported high pressure amplifying back over
the southwestern US. EC is throwing a wrench in the solutions with a
troughier pattern setting up. Going with consistency until we have
good reason to believe otherwise.


.AVIATION...(For the 06Z TAFS through 06Z Sunday night)
Issued at 1142 PM MDT Sat Jun 24 2017

VFR conditions will prevail at all TAF sites for the next 24
hours with some lingering haze in the Four Corners region
overnight. Moisture will be introduced under the ridge down south
Sunday afternoon which will allow for an isolated storm or two to
fire off over the San Juan Mountains.


Issued at 326 PM MDT Sat Jun 24 2017

A fairly dry weather system moving into the eastern Great Basin on
Tuesday will allow winds to increase and relative humidity to
decrease to near critical fire weather conditions both Tuesday and
Wednesday. At this time, these conditions are not expected to be
widespread, but the development of virga may help to drive winds
>25 mph down to the surface. Stay tuned to see if these conditions
are expected to become critical.




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