Sunday, June 13th, 2021 at 8:46 am #10697
Saturday morning Instructor, checkTow pilot, checkStudents???
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New reply posted by Don Grillo.
Topic title: Reply To: Saturday May 8 flying???
Come on out. See you at the field.
Aviation weather concerns this period consist of: * Lake breeze and an ENE wind shift late this AM/early PM * Developing soaking rain this evening and overnight with MVFR and potentially IFR cigs/vsbys * Low potential for some RASN for a brief period late tonight, mainly RFD and DPA. * Gusty easterly winds tonight into Sunday morning Light and variable winds will start the day off along with some very patchy/shallow BR at outlying airports. A freshening lake breeze will switch winds easterly/northeasterly, first at GYY, and then into MDW and ORD around 17-19z. Winds will then remain east or northeast through the rest of the TAF period. Rain chances look to increase quickly this evening, although there remains some level of uncertainty regarding just how quickly the low-levels saturate with the latest thinking that it may take a little longer at ORD/MDW/RFD than currently indicated by some of the more aggressive hi-res guidance. Eventually, MVFR vsbys/cigs should be commonplace, with a potential for IFR conditions. Have introduced TEMPO groups for a period where the steadiest/heaviest rainfall is currently expected, and these may need to be moved to prevailing groups if confidence increases. Latest guidance suggests that a cold rain should prevail at ORD/MDW, with some potential for a brief rain/snow mix developing at RFD and DPA. This potential still seems pretty low right now, but perhaps just high enough at RFD to justify a brief PROB30. Precipitation chances will begin to trend downwards through Sunday morning and certainly through the early-mid afternoon hours with some improvement to cigs/vsbys during this time. Carlaw
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