PM Update: A Shower or Two Before Sunset

Partly sunny Tuesday; Cooler, cloudier Wednesday

* VORTEX2 Turns Heads in Tornado Alley | Severe Weather Junkie? *

Towering cumulus clouds have developed into a few isolated showers and thundershowers this afternoon. This activity is in response to daytime heating -- as highs rise to around 80 -- and should be mostly short-lived. Because there is little wind-flow aloft to keep storms moving, any that form could bring briefly heavy rain. Flooding issues like we witnessed last week are not anticipated. Most locations will stay dry through the rest of the day.

Tonight: Any isolated showers or thundershowers that last into evening will disappear as the sun sets, leaving us partly to mostly cloudy overnight. Lows should drop to around 60 in the suburbs and low-to-mid 60s in urban centers.

Tomorrow (Tuesday): High pressure continuing to build in to our north will shape the day on Tuesday. Skies should be variably cloudy (cloudier early, clearer late) throughout the day. Highs should reach the upper 70s most spots.

See Jason Samenow's full forecast through the weekend. And if you haven't already, join us on Facebook and follow us on Twitter.

Climate Conference Youth Essays: Today is the last day for youth messages to be submitted to the Global Learning and Observation to Benefit the Environment (GLOBE) program prior to the World Climate Conference-3 in Geneva, Switzerland on August 31 through September 4. The topic? Youth Working to Solve Local Problems through Weather and Climate Research. If you are or know a youngster interested in the issue, get to writing now, there is no time to waste!