Administrators NorthGeorgiaWX Posted October 1 Administrators Share Posted October 1 SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0725 AM CDT Tue Oct 01 2024 Valid 011300Z - 021200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected today. ...Synopsis... In mid/upper levels, the main belt of westerlies is expected to remain near the Canadian border through the period, extending across more of the Great Lakes with time. That will occur as a synoptic- scale trough -- evident in moisture-channel imagery from a low over westernmost parts of Hudson Bay across northwestern ON to the upper Mississippi Valley -- ejects northeastward over northern ON, and James and Hudson Bays, through the period. This stronger flow will remain well poleward of thunder potential today near a weakening/ ejecting trough over the Tidewater region, south of a weak front over FL, and under or south of a weakening synoptic ridge over parts of CO/NM/AZ. Vertical shear and lapse rates aloft will be too weak in any of those areas to support organized severe potential. Locally strong gusts may accompany the high-based convection in AZ, with a deep/well-mixed subcloud layer, but only modest (5-15 kt) midlevel easterlies. A cold front sweeping across the Great Lakes, Ohio Valley, lower Mississippi Valley, and southern Plains, should encounter a marginally moist/unstable airmass for isolated thunder, within a band of convection over parts of the eastern Great Lakes. ..Edwards/Dean.. 10/01/2024 Read more View the full article Quote Link to comment Share on other sites More sharing options...
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