UpdateApril 29th, 2013 at 9:58 pm by Chad Evans under Chad's WLFI Weather Blog
It was a nice, warm, but rather breezy day. We hit 73.6° at WLFI with Chicago at 74 & even central Lower Michigan in the 70s!
Those 80s in western Illinois, Iowa, Missouri are moving eastward & will be with us soon! Notice the 82 at Des Moines, Iowa & 83 at Kirksville, Missouri.
Thursday, cold front & surface & upper low will approach. Given SBCAPE values of up to 1500 J/kg projected & 20-30 kts. of bulk shear, think a couple storms may go severe as multi-cells pop in the afternoon (though the best bulk shear will stay northwest of our viewing area, it appears). In the evening & night, such surface instability (juice for storms) will wane, but a line/band of showers & some t’storms will likely pass.
As upper low stalls to our west Friday, at least some scattered showers & t’storms will be around. With some sun peering at times, the showers/storms will pulse up in a scattered fashion around upper low to our west. CAPE of 500 J/kg & cold air aloft (steep lapse rates) may promote an isolated hailer/wind gust or two.