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Area Forecast Discussion (AFD)

Issued by Salt Lake City, UT (SLC)

FXUS65 KSLC 202113

Area Forecast Discussion
National Weather Service Salt Lake City UT
313 PM MDT Tue Aug 20 2019

.SYNOPSIS...High pressure building in over the region will result
in continued warm and dry conditions over the next few days. 


.SHORT TERM (Through 00z Saturday)...Continued retrogression of
the mean ridge axis along the US/Mexico border over the next 48
hours will maintain the bone dry conditions beneath a relatively 
light southwesterly flow aloft. Come Thursday the ridge will 
begin to build off the southwest Cali coastline allowing the 
southern fringe of a weak trough to graze the area, while driving 
a shallow and dry boundary through much of the area by late day. 
Sensibly, the only notable changes to weather at that time will be
a net increase of mid/high cloud cover and slightly cooler temps
for roughly two days time.

.LONG TERM (After 00Z Saturday)...An elongated mid level ridge axis 
will maintain a dry airmass across the forecast area throughout the 
long term period. Temperatures across the region will remain near or 
a bit above climo through the long term period. Overall little to no 
change was made to the long term forecast. 


.AVIATION...South winds are expected to prevail at KSLC through the 
TAF period, with a 30 percent chance winds become northerly during 
the 22-02Z period. VFR conditions are expected to prevail. 


.FIRE WEATHER...High pressure oriented over the central plains
states will continue to slowly west along the US/Mexico border 
over the next 48 hours, this maintaining a bone dry and benign 
weather pattern locally. Winds will in general remain breezy at 
best during the peak heating hours, while RH will continue to run 
very low during the day with poor overnight recovery. Temps will 
continue to run above average.





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