Area Forecast Discussion
Issued by NWS Salt Lake City, UT
FXUS65 KSLC 271600
Area Forecast Discussion
National Weather Service Salt Lake City UT
1000 AM MDT MON JUN 27 2016
.SYNOPSIS...High pressure over the interior west will sustain hot
temperatures early this week. Moisture will move into the area
beginning Monday night and will bring a threat of rain and
thunderstorms from Tuesday through the end of the week.
.DISCUSSION...An inverted trough rotating around the western edge
of the high-amplitude ridge will spread significant mid-level
moisture into Southern Utah beginning Monday evening. This trough
is currently located over southern Arizona, and will move north
through the next 24 hours. While isolated weak thunderstorms are
possible Monday evening over the far southern CWA, the primary
thunderstorm threat will begin with diurnal heating on Tuesday
By Tuesday afternoon PWAT values of 0.7-1.0 inches will be present
over much of the southern half of the CWA. Since the low levels will
remain relatively dry, gusty outflow winds and dry lighting are
probable in association with thunderstorm activity over much of the
southern CWA, particularly near high terrain.
PWAT values exceeding 0.7 inches will overspread the entire state by
Wednesday afternoon. The moisture will also deepen, leading to
increased areal coverage ofthunderstormss for the entire CWA and
a higher likelihood of accumulating rainfall.
No updates made or planned attm.
.AVIATION...Operational weather concerns will remain minimal at
the KSLC terminal through the valid TAF period. Light southeast
surface winds with shift to the northwest between 17-19z per
norm. Clear skies will maintain VFR conditions.
.FIRE WEATHER...With a slow increase in mid-level moisture across
southern Utah through Tuesday, anticipate an increase in the threat
of convection Tuesday afternoon and evening for portions of southern
and eastern Utah. A fire weather watch has been issued for areas
where fuels are critical due to the increased threat of multiple
fire starts after an extended dry period.
Convection will increase in coverage as moisture continues to
increase Wednesday across portions of southern and eastern Utah.
While thunderstorms will trend wetter, it may be necessary to extend
the fire weather watch into Wednesday. Will let the day shift
coordinate with the appropriate parties and make that decision.
Convection will be possible each afternoon and evening through the
weekend. Global models indicate a possible return to drier conditions
in the 7-10 day period.
UT...Fire Weather Watch from Tuesday afternoon through Tuesday
evening for UTZ488-489-494-495-497-498.
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