Active Weather Pattern Kicking Off November Across United States

World's First Chief Heat Officer's Tips

November is kicking off with an active jet stream pattern that will bring stormy conditions to parts of the central and eastern states while rounds of rain soak the Pacific Northwest.

Three separate weather systems will move through a southward plunge of the jet stream east of the Rockies in November's first seven days. Before pushing east, two of those systems will impact the Pacific Northwest this weekend.

Here's an overview of what we are watching to start the new month.

(MORE: Six Things You Might See in November's Weather)

Three Systems to Watch in November's First Week

System #1:

- Thursday: The first low-pressure system will bring a threat of strong to severe storms to parts of the South while also spreading heavy rain into the Ohio Valley and eastern Great Lakes.

(MORE: Severe Weather Forecast)

- Friday/Saturday: Much of the East Coast will see wet conditions to end the workweek, likely contributing to travel delays on roads and at airports. A few strong to severe thunderstorms are possible from parts of the mid-Atlantic states to Florida. Rain will linger in New England Saturday, with wet snow and wind expected in the high country of northern New England and Upstate New York.

System #2:

System #3:

- Early Next Week: There is the potential for a more powerful storm to develop and impact parts of the Midwest, South and East next Tuesday and Wednesday. This area of low pressure could haul with it heavy rain, strong to severe thunderstorms in the South and East and, perhaps, snow in some northern areas. Election Day could potentially be affected by this widespread weather system in portions of those regions, but it's too early to pinpoint details.

(MORE: Election Day Weather)

All three of those low-pressure systems will be followed by reinforcing shots of chilly air into the central states, keeping fall-like temperatures in place like we saw in the second half of October.

Pacific Northwest Soaking

November marks the ramping up of the wet season in the Pacific Northwest, and the start of the new month ahead will be right in line with what weather history tells us. For Seattle, November averages more precipitation than any other month during the year – although December and January aren't far behind.

Although the Pacific Northwest is already seeing unsettled weather conditions to end October, multiple rounds of stormy weather will usher in November.

The first bout of soaking rain and high-mountain snow will arrive Thursday into Friday, with the heaviest rain in western Washington.

Another round of rain and mountain snow will arrive in the Pacific Northwest Saturday into Sunday.

"Strong river rises are likely" in western Washington after the multiple rounds of rain, according to the National Weather Service. Some flooding can't be ruled out as well, the NWS said, primarily in mountain locations.

Both of those weather systems will also bring lower-elevation rain and mountain snow to the northern Rockies.