Today's burst of 80-degree warmth brings Chicago its highest temperatures in nearly two weeks, but it won't last. A strong cold front -- the leading edge of much cooler air -- arrives late Sunday night, preceded by showers and thunderstorms that have the potential to produce strong and locally damaging winds. Temperatures crash after frontal passage and readings plunge into the lower 50s by daybreak Monday. The chilliest air of the newly-arrived autumn season dominates the area on Monday and Tuesday, and afternoon temperatures on both days will struggle to reach 60 degrees. Autumn's first chilly outbreak is always an eye-opening reality check because we're still acclimated to the warmth of summer, but it'll be even worse this time: The chilly air arrives on gale-force winds that will gust above 40 mph on Monday. Mariners take note: Those winds are likely to generate towering 12-foot waves on Lake Michigan.
A bit of noise in the tropics
A poorly organized tropical depression has developed about 600 miles west of the Cape Verde Islands. It's no threat to land, but the storm's 35-mph winds may briefly strengthen to produce Tropical Storm Grace before the weakening and dissipating as it encounters cooler water and unfavorable upper winds.
A bit of noise in the tropics
A poorly organized tropical depression has developed about 600 miles west of the Cape Verde Islands. It's no threat to land, but the storm's 35-mph winds may briefly strengthen to produce Tropical Storm Grace before the weakening and dissipating as it encounters cooler water and unfavorable upper winds.
