Unsettled!

A quasi-strtionary front snakes it's way across central Illinois, northern Missouri, extreme southeastern Nebraska, western Kansas, the Oklahoma panhandle, across the northwest Texas panhandle into northeastern New Mexico.  This front divides very warm and humid tropical high dew point air from considerably cooler air to the north.  Disturbances will ride up along the front for the next couple of days. Nocturnal thunderstorm complexes are expected to develop the next two nights over the plains states along the front.  Tonight's complex is anticipated to come together over northeastern Kansas and southeastern Nebraska.  It will then move east/northeast along the front reaching the northwestern part of Illinois late tonight or early in the morning on Monday passing across the Stateline during the morning hours.  No severe weather is anticipated at this time, but there could be some locally heavy rainfall.  Daytime temperatures will be held down because of all the clouds.  The Stateline will get a break from the rain on Wednesday with a good amount of sun, and afternoon temperatures reaching the low 80's as a weak are of high pressure settles across the area.  The high will move fair quickly to the east by Wednesday night allowing the  next system to approach the Stateline on Thursday. With winds switching back to the south, humidity levels will increase, with afternoon temperatures reaching the middle 80's, and there may be some thunderstorms back in the area with a warm front moving through from the southwest late in the day or in the evening. The Stateline will be in the warm sector between the warm front off to the northeast and the cool front approaching from the west on Friday.  This will be very steamy Gulf air.  The afternoon high temperatures will be dependent upon how much cloud cover there is, if there are any early afternoon thunderstorms, and the arrival time of the cool front from the west.  If showers and thunderstorms and the front are delayed until late in the day, temperatures will be close to 90 degrees by 4 pm on Friday.  It will be a less humid and slightly cooler day on Saturday with lots of sunshine, but temperatures will still top out a little above average, in the low 80's.  The dry weather appears to be shortlived, though, with another warm front developing over the central plains and middle Mississippi River Valley, there could be some thunderstorms in the afternoon on Sunday.
By Meteorologist
Eric Nefstead