Heat Across the Center of the Nation; Severe Thunderstorms Across the Great Lakes and Ohio Valley

Heat expands across the Desert Southwest, Plains, Mississippi Valley and Midwest into Monday. Fire weather concerns continue for portions of the Intermountain West. Active monsoonal moisture fuels thunderstorms over the Southwest with possible flash flooding. Tropical cyclone Fausto in the Pacific, should weaken as it approaches Hawaii; Dangerous surf, swells and rip currents are expected. Read More >

Severe Storm Potential this Evening and Tonight

Individual Severe Weather Hazards

Additional Severe Storm Potential Monday

Heat & Humidity Through Monday

A line of strong to severe thunderstorms is expected to drop south across southern Wisconsin late this evening and into the early overnight hours. All modes of severe weather will be possible as the line moves through, but damaging straight line winds in excess of 70 mph will be the main threat. The threat shifts from severe to heavy rainfall as additional showers and storms affect southern Wisconsin from late tonight into Monday morning.

The Enhanced Risk issued by the Storm Predication Center is due to the upgraded wind potential. The hatched area for wind indicates the potential for straight line wind gust in excess of 70 mph. The hatched area for hail is for hail larger than 1.5 inches in diameter.

Additional thunderstorms are possible Monday, with the exact location and intensity of storm development being highly dependent on the evolution of storms happening this evening and overnight. Additional severe weather would be possible in the event that storms develop. Exact details given timing and placement of storms may not clarify until Monday morning, so keep up with later forecast updates.

Hot and humid conditions continue today through Monday across southern Wisconsin. A Heat Advisory remains in effect between Noon and 9 PM this afternoon for most of the area. If showers and storms don't interfere, additional Heat Advisories may be needed on Monday.

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Heat Across the Center of the Nation; Severe Thunderstorms Across the Great Lakes and Ohio Valley

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