Scientific Forecaster Discussion
Area forecast discussion
National Weather Service Salt Lake City Utah
1021 am MDT Sat may 30 2015
Synopsis...high pressure aloft strengthening across the interior
west will bring a significant warming trend to the region this
weekend. A cold front associated with a storm system over the
Pacific northwest will enter northern Utah early next week.
Discussion...high pressure continues to build over the forecast
area this morning. Last trailing shortwave is providing enough
instability for just a few showers over central Utah...but
otherwise conditions are tranquil except for some high clouds.
Despite the drier air moving in...satellite derived precipitable waters indicate
values in the 0.5 to 0.7 inch range...still well above normal for
this time of year. So despite the absence of forcing this
afternoon...enough moisture remains in place to allow convection
to develop once again over the higher terrain. However...limited
steering flow will limit drift into valley locations. With drier
conditions tomorrow...convection will be more limited. Otherwise...a
strong warming trend will commence...with maxes running in excess
of 5f above seasonal normals today and over 10f above seasonal
norms for tomorrow.
A Pacific northwest storm system is expected to move onshore on
Monday...bringing a cold front into northern and central Utah
early next week...bringing temperatures back to near climatology. This
will also allow for a more unsettled southwest flow over the
forecast area...bringing back the threat of some convection over
primarily northern Utah.
No updates expected to the forecast this morning.
Aviation...the slc terminal will see VFR conditions throughout
the day with some scattered clouds. Southeast winds are expected
to shift to the northwest between 19z and 21z.
For more information from National oceanic and atmospheric administration/S National Weather Service visit...
http://weather.Gov/saltlakecity (all lower case)
For frequently asked questions about the area forecast discussion
http://weather.Gov/saltlakecity/general/afd_faqs.Php (all lower case)