Starting on Thursday, the chances for severe weather across the Central plains will increase, with a decent chance for tornadoes for northeast Colorado, southwest Nebraska and western Kansas.  The map, left, depicts the current severe weather probabilities issued by the Storm Prediction Center for Thursday.

Thursday, a shortwave trough will make its way across the desert southwest and should reach the High Plains by Thursday evening.  With the gulf moisture recently being scoured out by an upper-level low, there are uncertainties whether low-to-mid-60 dewpoints and quality boundary-layer moisture will return in time for Thursday. Nevertheless, cyclogenesis will take place, and instability will pool along a w/nw - e/se warm front and further south along a dryline in SW KS into western OK/ Texas panhandle region or further east along the strongly-capped warm front. Storms should fire first under the upslope regime in northeast Colorado (extreme southeast Wyoming as well), southwest Nebraska, and possibly northwest Kansas by late afternoon/evening.  It's unclear, at the moment, if storms will fire further south along the dryline into SW KS into OK/TX panhandles. Any storm that does initiate on Thursday, will have the potential for very large hail, damaging winds and isolated tornadoes.