Scientific Forecaster Discussion
Area forecast discussion
National Weather Service Salt Lake City Utah
1008 PM MDT Tuesday may 26 2015
Synopsis...a moist and unstable airmass will remain in place
across the region. An upper low moving out of the northern rockies
will impact most of Utah through the remainder of the work week.
Discussion...an upper low remains in place over eastern Washington
state this evening with the associated jet rounding its base into
southern Idaho. Moist and somewhat unstable airmass today generated
some showers which were enhanced over northern and central Utah by a
shortwave disturbance crossing the area. Although showers have
decreased in coverage now...expect continued activity focusing
across northwest Utah through the night as the upper low sags
Large-scale lift ahead of the advancing low will combine with the
moisture and instability in place to once again bring an active day
of showers to northern zones...with some stronger storms possible.
Southern Utah will see a bit of a drying trend so fewer showers are
expected. The low will slowly cross the area through Thursday
followed by warmer/drier conditions for the weekend.
Updated the forecast mainly to adjust probability of precipitation for the rest of the night.
Aviation...southerly winds are expected to prevail at the slc
terminal through the night. However...there is a 40 percent chance
for westerly winds between 0530-0730z if upstream showers hold
together. These showers could drop ceilings to the 5-6kft
range...otherwise middle/high clouds are expected through the night.
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)