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KEY MESSAGES

- A warming trend through the week will bring triple digit temperatures by Friday or Saturday.

- Mainly dry conditions with only an isolated thunderstorm Thursday night.

- Drier and breezier conditions Friday and Saturday will increase fire weather concerns.

DISCUSSION

WEATHER PATTERN OVERVIEW:

An upper ridge over the western states will build into Montana this week with temperatures warming into Friday. Look for highs Friday to reach the 90s north to the low 100s south. West winds will also increase as a surface low passes east to the northeast of us. If fuels dry out enough, there could be Fire Weather concerns.

Somewhat lighter winds are expected Saturday but slightly lower humidities will keep the Fire Weather concerns alive.

Slightly cooler conditions are expected Sunday but not enough to remove the Fire Weather concerns.

Lighter winds and higher humidity, especially in the northeast zones should continue to hack away at the Fire Weather concerns Monday.

FORECAST CONFIDENCE & DEVIATIONS: Going NBM forecast generally good. Concerned that increasing smoke aloft could suppress temperatures through the week. While have not adjusted temperatures, have begun to add haze into the forecast.

AVIATION

VFR. While clouds will be clearing the region, smoke from the Oregon and Canadian fires will be spreading into eastern Montana, reducing visibility at times through the end of the week.

DENSITY ALTITUDE issues will begin to return to the terminals Friday through the Weekend.

GGW WATCHES/WARNINGS/ADVISORIES

None.