Area Forecast Discussion
Issued by NWS Goodland, KS
FXUS63 KGLD 112059
Area Forecast Discussion
National Weather Service Goodland KS
159 PM MST Wed Jan 11 2017
.SHORT TERM...(This evening through Thursday)
Issued at 158 PM MST Wed Jan 11 2017
Currently across the Tri-State region there is a cold front
continuing to push south through the area. The front created some
difficulties with timing and temperatures in the forecast. This was
due to the fact that it moved through the region much sooner than
previous guidance indicated (earlier in the morning); high
temperatures were adjusted to reflect this. The northern counties
that got the first brunt of the front are starting to show some
slight increasing in temperatures due to clearing skies. Winds have
also started to decrease over the majority of the area in the wake
of the frontal passage.
The remainder of the afternoon and evening are expected to be dry
and chilly. Temperatures will drop into the low teens to low 20s
over the region tonight and winds will shift slightly at less than
10 mph. The upper level flow shows an approaching low pressure
system in the western CONUS. This brings a weak southwest flow into
the region with periods of zonal flow.
Thursday brings dry conditions as well, with increasing cloud cover
during the day with the approaching trough in the western states.
Winds will shift and increase from the southwest to the northeast
during the day to around 10 to 15 mph.
.LONG TERM...(Saturday through Tuesday)
Issued at 257 AM MST Wed Jan 11 2017
There are still a lot of questions regarding the upcoming winter
storm in the extended due to differing guidance. The time of concern
appears to be from the beginning of the period through Monday.
During this timeframe, snow will be the dominant precipitation type,
but some locations (particularly those in the southeast), have a
decent shot at seeing a wintry mix with freezing rain and sleet. It
is too early to tell details like where exactly precipitation types
will occur, and the forecast is subject to change as the weekend
draws near. That being said, the current snow forecast generally
calls for 2 to 4 inches.
Saturday: The closed low starts out the day over Baja California
before migrating east towards the southern end of the desert
southwest. Precipitation chances begin to creep into the region from
the south. Arctic air at the surface is overridden by moist warm air
aloft ahead of the upper low. As a result, freezing rain and sleet
are possible in addition to some light snow for generally the
southeastern third of the area. As precipitation chances move
further north Saturday night, the line transitioning from all snow
to a wintry mix pushes to our southeastern edge.
Sunday: PoPs favor this period during the extended. The upper low
takes a sharp turn to the north and heads towards the High Plains
from the desert southwest. With the warmer air aloft having shifted
east, only the far southeastern edge of the area sees a wintry mix
while the rest of region is forecast to see snow, with a brief
opportunity for some rain as temperatures peak during the afternoon.
Monday: Precipitation chances decrease as the system passes over the
central Plains. Snow early Monday transitions to a rain/snow mix mid
day and exits the region Monday night.
Tuesday: The upper low passes east and moves towards the Great
Lakes. Dry weather returns to the area.
Temperatures: Highs are anticipated to be in the mid 30s to low 40s
on Saturday, followed by the 30s on Sunday. The area sees a warming
trend thereafter, with highs in the mid/upper 30s on Monday and low
40s on Tuesday. Lows stay mainly in the 20s throughout the period.
.AVIATION...(For the 18Z TAFS through 18Z Thursday afternoon)
Issued at 1156 AM MST Wed Jan 11 2017
KGLD will see off and on MVFR conditions over the next few hours
due to a small area of lower clouds moving northeast over the
site. VFR conditions are expected through the remainder of TAF
period for both KGLD and KMCK.
For both sites: Gusty winds up to 20 kts can be expected over the
next 3 to 4 hours due to the passage of the cold front. Winds
will continue to be from the northeast due to the front and wont
start to shift until late this evening; wind speeds will drop to
below 10 kts. Winds will shift clockwise slowly through the
evening for KGLD and generally stay from the east and northeast