FXUS65 KGGW 190750
AFDGGW

Area Forecast Discussion
National Weather Service Glasgow MT
150 AM MDT Fri Jul 19 2024

.DISCUSSION...

KEY MESSAGES:

- Isolated thunderstorms are possible this afternoon in the east.
  Scattered thunderstorms are possible over all of NE Montana
  Saturday afternoon and evening.

- Highs will be in the upper 80s or the 90s most of the time for
  the next several days. Some locations will have highs near 100 the
  middle of next week.

- Scattered haze from Canadian wildfires is expected to sneak
  into the area the next couple days.

WEATHER PATTERN OVERVIEW:

A shortwave trough is bringing thunderstorms to parts of eastern
Montana early this morning. That wave will exit the region by 15z
this morning.

Additional shortwaves this afternoon and again Saturday afternoon
will combine with unstable airmass to bring more chances for
thunderstorms. Thunderstorm chances this afternoon are 15-25%
east and less than 10% west. For Saturday afternoon and evening,
the thunderstorm chances are 20-30% west and 30-40% east.

Upper ridge intensifies over the area Sunday and Monday and
remains over the area all of next week with hot and mainly dry
weather.

FORECAST CONFIDENCE & DEVIATIONS:

High confidence of the ridge intensifying early next week with
highs in the 90s most of the time and some areas near 100
Wednesday and Thursday.

Confidence in the specific location and timing of any
thunderstorms is low to medium at this point.


&&

.AVIATION...

FLIGHT CONDITION: VFR

DISCUSSION: There will be some high based thunderstorms early this
morning and again this afternoon and early evening. Main hazard
is gusty outflow winds. Otherwise, look for few or scattered mid
and high level clouds today and tonight.

WINDS: Variable 5-10 knots early then becoming NE 5 to 10 knots
this morning and afternoon. Winds will be light and variable
tonight.

&&

.GGW WATCHES/WARNINGS/ADVISORIES...
None.
&&

$$

weather.gov/glasgow