Area Forecast Discussion
Issued by NWS Grand Junction, CO

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000
FXUS65 KGJT 191115
AFDGJT

Area Forecast Discussion
National Weather Service GRAND JUNCTION CO
515 AM MDT Mon Jun 19 2017

.SHORT TERM...(Today through Tuesday)
Issued at 514 AM MDT Mon Jun 19 2017

Strong high pressure across the western US will build eastward
and plant its axis over the Four Corners states for the next few
days. Temperatures will be in the upper 90s and challenging 100 in
the low valleys on Monday, then exceeding 100 and potentially
reaching near record temps starting Tuesday. Winds will remain light
and change direction diurnally each day.

.LONG TERM...(Tuesday night through Sunday)
Issued at 514 AM MDT Mon Jun 19 2017

High pressure remains centered over the Four Corners Tuesday and
Wednesday allowing hot, near record temperatures to persist through
Thursday. Overnight Thursday into Friday, a broad trough will dip
into the northern contiguous US allowing the Southwest US high
pressure to shift slightly southward. Winds are anticipated to pick
up a bit over the early part of the weekend due to the pressure
gradient tighten with cooler air to our north interacting with the
hot air in place. Critical fire weather conditions could begin to
develop as early as Thursday afternoon across NE Utah as winds
increase. Conditions over the weekend are expected to remain hot and
dry except for an occasional shower or thunderstorm over the
mountains.

&&

.AVIATION...(For the 12Z TAFS through 12Z Tuesday morning)
Issued at 514 AM MDT Mon Jun 19 2017

VFR conditions will prevail over the next 24 hours as high
pressure strengthens over the region with mostly clear and dry
conditions. Winds will be terrain driven and follow typical
diurnal patterns. Some occasional gusts up to 20 mph are possible
during the afternoon during peak heating at a few TAF sites.

&&

.HYDROLOGY...
Issued at 514 AM MDT Mon Jun 18 2017

A number of streams and creeks continue to run strong, cold, and
high and will continue to do so through early next week. The
Green River near Jensen remains near bankfull and CBRFC forecasts
indicate that high flows there will continue. Meanwhile, tunnel
closures have caused the Roaring Fork in Aspen to reach bankfull
but remains below minor flood stage.

Where water is running high, river banks may become saturated and
unstable. Lowlands along the rivers may also become inundated with
water.  Remember if you are going to raft, kayak or tube on the
rivers be sure to always wear a life jacket.

&&

.GJT WATCHES/WARNINGS/ADVISORIES...
CO...Heat Advisory from noon Tuesday to 10 PM MDT Thursday for COZ006.

UT...Heat Advisory from noon today to 10 PM MDT Thursday for UTZ022-
     027-029.

&&

$$

SHORT TERM...JAM
LONG TERM...JAM
AVIATION...TGJT
HYDROLOGY...TGJT



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