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* stats delayed and were probably not accurate to begin with
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.
When no specific risk areas are shown, you might see one of these phrases:
If you bookmark this page, it will continue to update with each new outlook that is issued.
Day 4 | Thursday, September 18 | potential too low |
Day 5 | Friday, September 19 | potential too low |
Day 6 | Saturday, September 20 | potential too low |
Day 7 | Sunday, September 21 | potential too low |
Day 8 | Monday, September 22 | predictability too low |
ZCZC SPCSWOD48 ALL ACUS48 KWNS 150806 SPC AC 150806
Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0306 AM CDT Mon Sep 15 2025
Valid 181200Z - 231200Z
DISCUSSION
An upper low/shortwave trough will persist over the north-central U.S. for much of the period. This system is not forecast to deepen, resulting in little surface cyclogenesis, with mainly weak surface troughing persisting over the Plains. Southerly low-level flow will maintain a seasonally moist airmass, and periods of showers and thunderstorms are expected each day across parts of the Plains to the MS Valley. Modest vertical shear and airmass modification from daily rounds of convection will likely limit overall severe potential.
Medium range guidance suggests by late in the period, around Day 8/Mon, a stronger surface cold front may sweep across portions of the Plains as a deepening, more progressive upper trough moves from the Rockies into the Plains.
..Leitman.. 09/15/2025
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