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You are looking at an outlook that is part of the medium range forecast (the outlook for days 4-8). The most important thing to note is that lack of a risk does not mean zero risk. Generally speaking, confidence has to be pretty high for the Storm Prediction Center to have an outlook area this far into the future.
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ZCZC SPCSWOD48 ALL ACUS48 KWNS 200905 SPC AC 200905
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0305 AM CST Wed Nov 20 2024
Valid 231200Z - 281200Z
DISCUSSION
An upper trough will move out of the northeastern states from Sat/D4 into Sun/D5, with the ridge flattening over the Plains. This will result in a broad belt of near zonal flow across much of the CONUS, with perhaps a slight propensity for cyclonic height curvature over the Great Lakes into eastern Canada.
Low-level moisture return will occur gradually, especially from Mon/D6 onward when 60s dewpoints may extend from eastern TX into the lower MS Valley. However, not until around Tue Night/D7 do most models show any appreciable instability, and even then it will likely be weak. As such, severe storms are not forecast. However, a few strong storms cannot be ruled out by around Wed/D8 due to several days of persistent moistening, especially if a shortwave trough can amplify within the strong flow regime.
..Jewell.. 11/20/2024
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