Area Forecast Discussion
Issued by NWS Aberdeen, SD

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FXUS63 KABR 250546 AAC

Area Forecast Discussion...UPDATED
National Weather Service Aberdeen SD
1246 AM CDT Tue Apr 25 2017

Issued at 1242 AM CDT Tue Apr 25 2017

See below for an aviation forecast discussion for the 06Z TAFs.

UPDATE Issued at 911 PM CDT Mon Apr 24 2017

Precipitation has now exited the CWA. Abundant cloud cover still
expected tonight and into the day Tuesday, and no changes to
precipitation timing during those time periods. No changes made to
winds or temperatures at this time.


.SHORT TERM...(This Evening through Tuesday Afternoon)
Issued at 301 PM CDT Mon Apr 24 2017

An area of low pressure, currently over the tri-state area of
ND/SD/MN will continue pushing east of the region. Weak CAA, along
with dry northerly flow will filter into the CWA tonight through
Tuesday morning. Another low pressure system, along with a weak
upper level short wave, will approach the region from the west late
tonight. This system will spread light pcpn into the far western
portion of the CWA around 12Z. The P-type maybe a mixture of rain
and snow with snow more likely further west. Snowfall amounts
between a dusting and one inch will be possible. This storm system
wanes over western South Dakota as a stronger area of low pressure
crosses Nebraska on Tuesday. This system will spread additional pcpn
into the southern and eastern half of the CWA. Temperatures appear
to be warm enough to support all rain Tuesday afternoon.

.LONG TERM...(Tuesday Evening through Monday)
Issued at 301 PM CDT Mon Apr 24 2017

The extended pattern remains cool and unsettled with upper troughing
dominating. Shortwave activity traversing the upper trough will
bring periodic chances for showers. The broad trough will draw down
cooler air so highs 10 to 20 degrees below average are expected
through the weekend. With overnight lows in the 20s and 30s, some of
the showers could fall as snow or a mix of snow and rain. Little
accumulation is expected due to the warmer ground temps and daytime
heating causing quick melting.


.AVIATION...(For the 06Z TAFS through 06Z Tuesday Night)
Issued at 1242 AM CDT Tue Apr 25 2017

IFR/MVFR cigs will be common across the CWA through the TAF period.
One area of precipitation will affect the southwestern CWA late
tonight into the day Tuesday, with a second area affecting the
eastern CWA Tuesday evening. Vsbys may fall into the MVFR category
at times with the precipitation. The temperatures may cool off
enough both late tonight and early Tuesday, and again Tuesday
evening for the rain to mix with or change over to snow at times.
North winds will increase into the 15 to 25 knot range on Tuesday as




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