Area Forecast Discussion
Issued by NWS Salt Lake City, UT

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FXUS65 KSLC 201515

Area Forecast Discussion
National Weather Service Salt Lake City UT
915 AM MDT Thu Oct 20 2016

.SYNOPSIS...High pressure will build over the area through Friday.
Southwesterly flow will develop over the weekend with moisture
spreading into the region starting Sunday.


.DISCUSSION...High pressure is centered over CA this morning and
will keep the CWA dry today. A little cirrus will drift across
the north today but it is dissipating as it moves east
southeastward past the ridge axis so a sunny forecast looks on

The airmass aloft will be warming today but it will be very stable
under the ridge and this will prevent most valleys from reaching
their full potential. The areas under the hard freeze warning all
reached 28F or lower but are warming up now that the sun is up and
the warning was allowed to expire as of 9 AM.

The warming aloft is forecast to continue through tomorrow as the
ridge axis shifts east of the CWA then temps remain steady but
expect some additional warming at the surface on Sat and Sun as
the increasing swly flow aloft mixes down wiping out the valley

Still looks like moisture will start to spread into the CWA from
the southwest starting Sun with the GFS the fastest.

For now, will do a quick update to remove the freeze headline but
no other changes needed.


.AVIATION...Southerly winds will continue at the SLC terminal
through the morning, shifting to the northwest between 19-20Z.





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