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Area forecast discussion...updated 
National Weather Service Billings Montana
832 am MDT Tuesday Sep 2 2014

Update...

A dry northwest flow aloft along with slightly rising heights
will be over the forecast area today. Satellite showing some
clouds moving across the area but these should burn off by early
afternoon leaving a mostly sunny day. Afternoon temperatures will
be in the middle 70s to lower 80s which is at to slightly below
normal for this time of year. No updates planned this morning.
Hooley

&&

Short term...valid for today and Wednesday...

Flow aloft in process of transition to zonal flow. Dewpoints have
dropped down as drier air spreads across the forecast area. No
changes in our expectations of a dry and milder day. Next trough
and associated cold front to impact our forecast area Wednesday as
it drops south from British Columbia into the northern rockies.
System has very positive tilt to it and initially keeps forcing to
our north Wednesday morning even as cold front slides southeast
through the region. There is some weak forcing late in the
day...but I suspect the lower elevations will see mainly a gusty
wind shift to the northwest with some showers primarily over the high
country and nearby foothills. Hence...not a big nor lengthy
precipitaton event for our forecast area. Temperatures for
Wednesday are a little tricky as it is any time for a frontal
passage day. Stuck with blend of all solutions to negate risk of
large errors. Bt

Long term...valid for Thursday...Fri...Sat...sun...Mon...

Generally dry northwest flow will prevail across the region on
Thursday following the passage of upper level trough of low
pressure. This will result in a dry and much cooler than average
day across the region. Cold airmass is slowly modified by
increasing southwest flow throughout the remainder of the
period...affecting a slow warming trend through Monday. Temperatures will
approach seasonal average on Sunday...and climb a few degrees
above average on Monday with highs around 80 expected. Increasing
southwest flow will also bring slight chances for afternoon
showers and thunderstorms to the beartooth...absaroka...and Big
Horn Mountains each day. Otherwise...mainly dry conditions will
prevail into Monday. Another upper level trough...and associated
cold front is prognosticated into the region Monday evening bringing
another round of showers and thunderstorms for Monday night through
Tuesday. Below normal temperatures can again be expected on
Tuesday...behind the cold front. Aag




&&

Aviation...

No flight hazards are expected today through tonight. A few middle
and high level clouds can be anticipated but VFR conditions will
prevail. Richmond

&&

Preliminary point temp/pops...

Today Wednesday Thursday Friday Sat sun Monday
-------------------------------------------------------
bil 080 053/075 047/063 047/069 048/074 050/076 054/079
0/u 02/T 11/b 11/b 12/T 21/u 11/u
lvm 080 045/073 040/063 038/071 041/073 044/076 048/078
0/u 02/T 11/b 11/b 12/T 21/u 22/T
hdn 080 052/077 050/065 049/072 050/077 051/079 054/082
0/u 01/u 11/b 11/b 12/T 21/u 11/u
mls 079 054/078 052/064 049/071 051/077 052/079 057/082
0/u 01/u 21/b 11/b 11/u 11/u 11/u
4bq 080 053/083 050/064 048/071 050/077 052/079 056/082
0/u 01/u 11/b 12/T 21/u 11/u 11/u
bhk 076 050/079 049/062 045/069 047/073 049/076 054/080
0/u 01/u 21/b 11/b 11/u 11/u 11/u
shr 079 048/081 046/065 045/072 046/075 047/079 052/081
0/u 00/u 11/b 22/T 22/T 22/west 22/T

&&

Byz watches/warnings/advisories...
Montana...none.
Wyoming...none.

&&

$$
Weather.Gov/Billings

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