1.   An onshore flow of moist air will cause scattered rain showers from Washington to California with heavy snow showers across the Cascades and Sierra mountains.

2.   Another area of low pressure with an associated cold front will cross the southern Great Lakes, producing showers from Ontario to the Ohio Valley.

3.   Another front marking the leading edge of an autumnal air mass will promote a few showers from the Dakotas to northern Minnesota.

4.   Another offshore disturbance will deliver moist Pacific air to parts of the West Coast, prompting coastal showers from central California northward.

5.   Another surge of cool air into the northern Rockies will cause showers from the Dakotas to Montana.

6.   A blustery air flow from the northwest will transport colder air across the Great Lakes, causing widespread snow showers from Michigan to eastern New York.

7.   A cold front will push into the interior Northwest on Thursday afternoon with scattered showers from southern Idaho to the Northwest coast.

8.   A complex front moving into the northern Appalachians will produce scattered showers from western New England to Pennsylvania.

9.   A developing area of low pressure moving through the south-central Plains will be accompanied by numerous showers from southern Missouri to central Texas.

10.   A corridor of humid air will stream northeast from the Gulf of Mexico with considerable clouds and scattered showers from east Texas to the northwest Appalachians.