Scientific Forecaster Discussion
fxus65 kggw 162036
Area forecast discussion
National Weather Service Glasgow Montana
136 PM MST Sat Nov 16 2019
morning cold front and upper trough have moved to our east this
afternoon with an upper ridge moving in from the Pacific northwest. This
will provide a mild Pacific airmass to move in, allowing
temperature to warm to about 10 degrees above normal climate
levels on Sunday. Winds will also increase as 850 mb winds will
mix down, but stopped short of issuing a high wind watch as 700
mb winds were 30-40 kts during the afternoon.
Disturbance moves southeast across the NE zones Sunday night, producing
mostly rainshowers. Then the upper ridge really starts to flatten
as a strong disturbance moves across the Pacific northwest and across the
area Tuesday/Tuesday night. Models continue to differ on what path
this system takes, but will have to keep an eye on it as the European model (ecmwf)
currently takes it the furthest south, that would bring a
snow event to most of the County Warning Area.
Afterwards, an upper ridge will build into western Canada that
would allow cold air to follow the system, but also warm things
up a bit later in the week as the ridge folds east into the area.
Clouds will decrease over the eastern zones, but increase from the
west later tonight. These clouds will be mainly at the MVFR level
but should rise a bit Sunday afternoon.
Winds: light and variable winds are expected tonight with an
increase later Sunday from the SW at 10kts or less. Tfj
lake Wind Advisory until 6 PM MST this evening for Fort Peck
Lake for central and southern valley...Garfield.