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08/13/2018, 7:50 am EDT

U.S. Week 2-4 Outlook

Highlight: Northwest stays hot; Canadian trough tries to shift toward Northeast U.S. Last week: Hot Northeast and West. Discussion: Dry and hot weather dominated the West. The Northeast was very warm to hot and mostly direr than normal. Week 2 Ahead: August 19-25, 2018 Comment: A fetch of Southwest U.S. monsoon moisture extends from 4 Corners into a mean trough positioned over the Central U.S. early-to-middle period. The upper trough lifts northeastward and weakens late period. Week 3 Ahead: August 26-September 1, 2018 Comment: Favoring re-expanding warmth Northeast/East (and humid) while tropical wet moisture extends into the Southwest and Gulf region. The Far West stays warm-to-hot and dry. Week 4 Ahead: September 2-8, 2018 Comment: Upper trough shifts toward the Northeast U.S. (and weakens). An arc of wet weather into the advancing trough from the Gulf States to the Appalachian Spine is likely. The West stays dry and warm-to-hot. Below average forecast confidence.