Area Forecast Discussion
Issued by NWS Aberdeen, SD

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FXUS63 KABR 272314 AAA

Area Forecast Discussion...UPDATED
National Weather Service Aberdeen SD
614 PM CDT Thu Oct 27 2016

.SHORT TERM...(This Evening through Saturday Night)
Issued at 311 PM CDT THU OCT 27 2016

Main points covered in the short term are the warm temperatures
followed by a weak system Saturday.

Southerly flow ahead of a low pressure area that will move across
North Dakota will draw 850mb temperatures close to the 99th
percentile across the forecast area with the peak core of warm air
moving overhead overnight tonight. Mixing will improve Friday with a
surface trof shifting winds around to the northwest. The gradient
will weaken in the post trof airmass so winds are not expected to be
strong but the degree of mixing will counter any weak cold advection
and thus we should see widespread temperatures some 15 to 25 degrees
above average for Friday, falling shy of records however.

An area of high pressure will move south out of Canada over the
course of Saturday, but we will also see a weak wave traverse the
area. Despite weakening, there will be enough broad-scale lift from
a right entrance region, around 10 microbars, to result in some
light rain. Daytime heating will generate some shallow strato
cumulus thanks to cooler mid level temperatures, which will
inhibit heating, but dissipate in the late afternoon allowing for
ideal radiational conditions Sunday morning.

.LONG TERM...(Sunday through Thursday)
Issued at 311 PM CDT THU OCT 27 2016

The long term looks to be mainly dry across the region along with
above normal temperatures. The long term begins with upper level
ridging across the central part of the U.S. with a large low
pressure trough off the west coast. A piece of energy will come off
of this trough and across our region Sunday night and Monday. It
looks like the track will take most of the light rain showers with
it to our north. The main trough off the west coast will then move
into the southwest U.S. Monday night through Tuesday night leaving
our region in the dry northern branch of the jet stream through
Thursday. With the mild Pacific flow through the period,
temperatures will be from 5 to 15 degrees above normal with highs
mostly in the mid 50s to the mid 60s.


.AVIATION...(For the 00Z TAFS through 00Z Friday Evening)
Issued at 612 PM CDT THU OCT 27 2016

Other than potential MVFR haze/fog at KATY early this evening, it
should be VFR at all terminals through the taf valid period.




SHORT TERM...Connelly
AVIATION...TDK is the U.S. government's official web portal to all federal, state and local government web resources and services.