Good morning!

I guess you heard the rain moving through during the overnight hours, it is now pushed southeast of Lincoln and today to should a relatively dry day to kick off the ProSolo!

This is a combined radar/water vapor loop, and the numbers are dewpoints. Much drier air is moving into southeast Nebraska and today should feel great. About 15 seconds into the loop I switch from dewpoint to temperatures.

The NWS hour by hour forecast looks great for today, but tomorrow may be damp at times. 
 

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For tonight, much of the evening should be dry, although rain
chances do increase by late evening and overnight as another weak
wave moves out of the Rockies. It's only a 20-40% chance, and
then just mostly showers with lows in the upper 50s and lower 60s.

That weak wave continues to move through the mid Missouri River
valley Saturday, which again, could bring a chance of showers to
the area, but instability is very limited, so thunder potential
seems small. And if it does rain, amounts would be light with just
a tenth or two of an inch. And still a very comfortable day with
highs in the lower to mid 70's.

As far as next week goes, no major rainfall in the forecast for now. You guys may luck out...

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.LONG TERM...(Sunday night through Thursday)
Issued at 310 AM CDT Fri Aug 30 2019

There is some hint that a wave topping the ridge could bring
isolated thunderstorms to area Sunday night. Previous models were
dry during this time, so that's something we'll keep an eye on.
Otherwise, dry weather continues for Labor Day with warmer temps
back in the mid to upper 80s. The long term period is generally
dry, although there is a front that moves through on Tuesday,
which brings cooler weather by Wednesday/Thursday.

So nothing today that should interfere with the competition. Go fast, have fun!