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KEY MESSAGES

- Seasonable temperatures and widespread rain showers are expected tonight and Monday.

- Below normal temperatures with significant mixed precipitation is becoming more likely for Thursday and Friday.

DISCUSSION

WEATHER PATTERN OVERVIEW:

Upper low off the northern California coast will lift through the Great Basin through the early part of the week. This will continue to push Pacific moisture into the state, with another round of showers possible tonight into Monday. Some colder air will filter south from Canada, for a little light snow possible along the Canadian border. At the same time, thunderstorms are possible in the southwest ahead of the California low.

The next upper trough moves into the northern Rockies on Wednesday and into the plains through Friday. This will lead to another round of showers, and with colder air with the trough, snow is possible across much of the region Wednesday night into Thursday, particularly for elevated areas. Chances for at least 2" of snow at this time are 20-40%.

FORECAST CONFIDENCE & DEVIATIONS:

Minor changes to the day 1 forecast with a slight increase in temperatures and winds for today.

While there is moderate to high confidence in two systems producing wetting precipitation, confidence is generally low for widespread accumulating snow to occur later in the week.

AVIATION

Mostly VFR conditions for today in between bands of showers. A more significant round of showers will move into the region tonight and linger into Monday. Brief MVFR conditions are possible with showers.

GGW WATCHES/WARNINGS/ADVISORIES

None.