National Weather Service United States Department of Commerce

Wildfire Smoke and Severe Thunderstorms in the East; Monsoon Thunderstorms in the Southwest

Wildfire smoke continues to impact air quality from the Great Lakes region into New England and the Mid-Atlantic today with widespread Air Quality Alerts in effect. Severe thunderstorms are expected across portions of the Ohio Valley and Lower Great Lakes into the Mid-Atlantic and Northeast, this afternoon into the evening. Monsoonal thunderstorms may bring areas of flooding to the Southwest. Read More >

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Last Map Update: Sat, Jul 18, 2026 at 12:16:44 pm CDT

Isolated to scattered thunderstorms are expected this afternoon through mid evening. The strongest storms will be capable of locally strong downburst winds and heavy downpours.
Heat is expected to intensify this weekend and persist into early next week. Afternoon heat indices of 100-110 F, locally higher early next week, are expected. Heat precautions should still be taken for any extended time outdoors.
Low storm chances will occur again Saturday and Sunday. Dangerous heat returns this weekend and into next week.
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