Area Forecast Discussion
Issued by NWS Aberdeen, SD

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50

000
FXUS63 KABR 242029
AFDABR

Area Forecast Discussion
National Weather Service Aberdeen SD
329 PM CDT SAT SEP 24 2016

.SHORT TERM...(This Evening through Monday Night)
Issued at 328 PM CDT SAT SEP 24 2016

Showers and thunderstorms are finally beginning to move into the CWA
from the south and have been adjusting POPs much of the afternoon to
account for the later start time. It also appears the precip is a
tad further east than forecast, which may very well leave the James
valley dry. Will continue to see this activity slide to the north-
northeast over the next several hours, with still some potential for
a few stronger storms with heavy rainfall and gusty winds.

Focus will then shift to the winds across central/north central SD
later tonight on the back side of the low pressure. Guidance is
showing a surge in winds between 06Z and 09Z tonight as 50 to 55
knot 850mb winds move in, along with cold air advection. BUFKIT
soundings show pretty strong winds not too far off the surface, with
the ability to mix these winds down even in the overnight hours.
Strong and gusty winds look to continue into the day Sunday. Issued
a wind advisory for central SD where it appears the winds will be
strongest. Conditions do not look real favorable for wind advisory
further east.

As far as precipitation, there will likely be some wrap-around light
rain showers moving into the western CWA overnight, with activity
continuing into the morning as everything begins moving east-
northeast. Will have to keep an eye on shower potential on Sunday,
in that the area of POPs may need to be pushed further south.

High pressure will build into the area Monday night, with clear
skies and light winds. Superblend temps looked to warm for an ideal
radiational cooling night, given how the nights are growing longer
and the overall air mass is fairly cool. Sided heavily to the MAV
guidance values which show cooler temps in the upper 30s to low 40s
for most areas.

.LONG TERM...(Tuesday through Saturday)
Issued at 328 PM CDT SAT SEP 24 2016

Upper ridging will begin to build into the Plains on Tuesday. With
the ridge in place, the extended will be warmer than average with
highs in the 70s to near 80. Sfc low pressure will move off the
Rockies for the weekend and the upper trough will exit. Models no
longer show a deep upper low during the end of the period. However,
southwest flow aloft with embedded shortwaves and the sfc low will
be enough to kick off a few showers and thunderstorms at the start
of the weekend.

&&

.AVIATION...(For the 18Z TAFS through 18Z Sunday Afternoon)
Issued at 1230 PM CDT SAT SEP 24 2016

A mix of vfr/mvfr cigs will continue through the evening.
Thunderstorms may develop or move in from the south closer to 21z
and affect KATY. As the cold front moves east tonight and Sunday,
winds will shift to the northwest and become gusty at 20 to 35
kts.

&&

.ABR Watches/Warnings/Advisories...
SD...Wind Advisory from 1 AM CDT /midnight MDT/ to 7 PM CDT /6 PM MDT/
     Sunday for SDZ003-004-009-015-016-033>035-045-048.

MN...NONE.
&&

$$

SHORT TERM...TMT
LONG TERM...Wise
AVIATION...Wise


USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.