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Daytime heating/unstable atmosphere to ignite scat PM showers

Yesterday at 11PM by Tom Skilling
This wind streamline and velocity analysis is a product of the WeatherBell database is based on data from the National Weather Service's 4km WRF model. Arrows here depict surface winds. The colors denote sustained wind speeds in kts. The shaded green area is the region of 22 kt (25 mph) and greater wind speeds.

Full fetch N winds boost Monday lake levels here 1.3 ft.; Lake’s overall water levels is 2.9 ft above record low

Yesterday at 4PM by Tom Skilling
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Temps/humidities crash in latest July ’14 full-fetch north wind regime; near record July wave heights

Yesterday at 11AM by Tom Skilling
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Chicago area’s atmospheric conditions on June 12, 2013

Today at 1AM by Tom Skilling
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Monday’s winds/sharp cooling churn Lake Michigan but ease Tuesday; daytime heating threatens scattered showers/isolated t-storms in warmer hours coming 4 days

Today at 1AM by Tom Skilling

Warmup builds through the week

Yesterday at 10PM by Tom Skilling
It's been Summer 2014 default upper air pattern; an abnormally "wavy" jet stream driven by anomalous warmth north and west (in areas shaded red) and cool here

It’s warmer in northern Canada than in Chicago; set-up contributes to cool summer pattern here

Yesterday at 7PM by Tom Skilling

Cooler temps, mild weather stick around

Yesterday at 6PM by Tom Skilling
This Lake of the Woods storm near Bremen, IN Sunday produced a powerful outflow which whipped up the waves you see here. Laura Budzilek reports the wave action snapped the anchor rope to her boat.

Midwest weekend storms behind these impressive photos

Yesterday at 4PM by Tom Skilling

A slow warmup this week

Yesterday at 2PM by Tom Skilling

Storms possible tomorrow, slow warm up all week

Yesterday at 2PM by Tom Skilling

Mild temps continue and storms possible tomorrow

Yesterday at 1PM by Tom Skilling

Forecast: Mild, possibly rainy week ahead

Yesterday at 6AM by Paul Konrad
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Is it true that lightning never happens out over the oceans, hundreds of miles away from land?

07|27|14 by Tom Skilling
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Chicago on southwest edge of cold air pattern aloft

07|27|14 by Paul Dailey
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