Meanwhile, a northeast to southwest oriented frontal boundary will become established from the western Great Lakes into the Corn Belt and then southern Plains from Monday night into Tuesday night. Showers and thunderstorms should develop to our northwest along that front and in closer vicinity to short wave energy tracking northeast within the southwesterly flow aloft. [Yawn...]
Models all have showers/thunder breaking out across the area this morning. PW values will significantly increase across the forecast area today with most locations rising to around 1.6 to 1.9 in. The cloudy skies and scattered showers/storms will hold down warming today into the mid 70's to around 80. Upper level energy over the northern plains will shift east along the U.S. Canada border
tonight and will help to flatten out the ridge in the eastern U.S. This will help to set up the best moisture axis in a southwest to northeast fashion with the highest PW values setting up over our
northwestern CWA. The best chances of rain will be over our northwestern CWA tonight. Lows tonight will be quite mild in the low to mid 60's. [Me picking up some interest]...
WEDNESDAY - THURSDAY
The large scale pattern then becomes somewhat interesting as we head into the Wednesday through Thursday night time frame. Models are in good agreement that we will see a confluent mid and
upper level flow develop from the northern and central Plains into the Great Lakes and Ohio Valley. This will be supportive of that front leaning over and becoming west to east oriented somewhere
across the central Plains and Mid-Mississippi Valley. This setup can be a heavy rain producer. We will keep close tabs on this potential. The good news is that we need the rainfall. Thus, we could stand to pick up a few inches (or even more) without any worries of excessive runoff.
Global models then become divergent as we get into late this week. There is some loose consensus that the convergent flow will break down and an upper level trough will eject out of the western United States. However, impacts on sensible weather are a tough call out that far.
In term of temperatures, we will see a downward trend throughout the work week as clouds and precipitation become bigger players. The eventual position of that front will also come into play from
mid to late week.
Widespread light rainfall over the entire area during the day, but by Saturday evening, all precipitation will have shifted east of the Ozarks, bringing a very pleasant evening for the region. Look for Saturday night lows to fall into the low to mid 50's.
Southwest flow aloft quickly re-establishes itself on Sunday bringing surface temperatures back into the 80s. Dew points in the 50's and low 60's will make conditions feel less humid than what we've experienced over the past couple weeks. See more at www.taneyweather.com!