Area Forecast Discussion
Issued by NWS Aberdeen, SD

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FXUS63 KABR 140424 AAA

Area Forecast Discussion...UPDATED
National Weather Service Aberdeen SD
1024 PM CST Wed Dec 13 2017

Issued at 1024 PM CST Wed Dec 13 2017

Areas of freezing drizzle continue late this evening and have
expanded into the James Valley. Therefore, have expanded the
Winter Weather Advisory to Brown and Spink and extended it until 4
am. Updated forecast.

UPDATE Issued at 610 PM CST Wed Dec 13 2017

Reports of freezing drizzle received across northeast SD along
with some icy conditions. Thus, made adjustments to the forecast
along with issuing a Winter Weather Advisory for this evening.

00z aviation discussion updated below.


.SHORT TERM...(This Evening through Thursday Afternoon)
Issued at 318 PM CST Wed Dec 13 2017

Weak lift along a frontal boundary draped across northeast SD
will continue producing patchy freezing drizzle and light snow
through this evening. The precipitation should mainly impact the
higher terrain areas of the Sisseton Hills. Have issued an SPS
highlighting the potential for slick roads in our eastern CWA
through this evening.

Another storm system will dive southward across the western
Dakotas late tonight and through the morning hours on Thursday.
This system will bring light, accumulating snow to the western
half of the CWA. Snowfall amounts of a dusting to one inch can be
expected with this system. With the lack of snow cover, combined
with little expected snowfall, do not believe blowing snow will be
much of an issue. Of course there could be some reduction in
visibility with falling snow.

.LONG TERM...(Thursday Evening through Wednesday)
Issued at 318 PM CST Wed Dec 13 2017

The upper level flow pattern remains progressive through the
extended with a number of troughs moving through the northern
plains. However, with lack of moisture at the sfc and and lack of
organized sfc low pressure systems, any precipitation will be very
light and sporadic. Temperatures will remain around 10 to 15 degrees
above average for mid to late December with highs in the 30s and 40s


.AVIATION...(For the 00Z TAFS through 00Z Thursday Evening)
Issued at 610 PM CST Wed Dec 13 2017

Low VFR/MVFR ceilings are expected through Thursday at all
locations. Some fzdz is expected at ATY this evening. Otherwise,
light snow will spread in from the northwest later tonight and
Thursday affecting mainly MBG and PIR with IFR/MVFR visibilities
along with some accumulation. ABR and ATY may also be affected with
light snow or flurries.


SD...Winter Weather Advisory until 4 AM CST Thursday for SDZ006>008-



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