Weather Service Report


482 
FXUS65 KSLC 202224
AFDSLC

Area Forecast Discussion
National Weather Service Salt Lake City UT
424 PM MDT Fri Jul 20 2018

.SYNOPSIS...A ridge of high pressure centered east of the Four 
Corners area will hold in place into the weekend. On the periphery
of this ridge, southerly flow will spread moisture and scattered 
afternoon thunderstorms northward across the region. 

&&

.SHORT TERM (Through 06Z Monday)...A mid level ridge centered over
the southern Rockies/southern High Plains will continue to result
in a south to southwesterly flow across the forecast area through
the weekend. Lingering moisture embedded within this high will
continue to bring a chance of showers and thunderstorms each
afternoon and evening. Little overall change to the going forecast
and made only minor tweaks. 

LONG TERM (After 06Z Monday)...A mid level high will be traversing 
from east to west over Arizona & New Mexico through next week. The 
high will build through mid week with long-range ensembles 
projecting the ridge to approach the 90th percentile by Wednesday.

With the high remaining south of Utah, the CWA should remain on the 
outer periphery of the high center with west-southwest level flow 
aloft. This pattern is supportive of isolated-scattered diurnal 
thunderstorms developing over the mountains in the afternoons. 
Expect decreasing PoPs through the week as drier air filters in from 
the west. With decreasing PoPs and a strengthening ridge, the temps 
will be warm (roughly 5-10 degrees above average) across the CWA 
through the week.

.AVIATION...The SLC terminal will remain under VFR conditions 
throughout the TAF period. A northerly wind shift is expected to 
occur within the next hour or so, however there is a 30% chance that 
the rain showers earlier may prevent the wind shift from occurring. 
Irregardless of the wind shift by 03Z, light southeasterly winds are 
expected through the night.

&&

.FIRE WEATHER...High pressure will maintain above normal 
temperatures across the region through the upcoming weekend.
Moisture which remains in place will continue to allow for 
scattered showers and thunderstorms during the afternoon and 
evening hours. Along the northern periphery of this moisture
axis a few dry thunderstorms will be possible across northern
Utah. 

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...None.
WY...None.
&&

$$


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Western Regional Climate Center, wrcc@dri.edu