Administrators NorthGeorgiaWX Posted October 27 Administrators Posted October 27 SPC 1300Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0747 AM CDT Sun Oct 27 2024 Valid 271300Z - 281200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected today, but isolated thunderstorms may occur along the coastal Pacific Northwest and coastal Carolinas. ...Discussion... Strong height falls will develop across the Pacific Northwest today in response to an approaching and amplifying shortwave trough. Cooling temperatures aloft will encourage steepening lapse rates as thermodynamic profiles become more favorable for weak convection within the developing onshore flow regime. Forecast soundings suggest parcels could attain heights necessary for lighting discharge by late morning into afternoon. Across the Carolinas, a low-amplitude shortwave trough will spread southeastward across the southern Appalachians during the late afternoon. This feature may influence isolated weak convection near the coast where low-level convergence will be maximized. Additionally, weak elevated instability will develop along the cool side of the boundary, and forecast soundings exhibit adequate buoyancy and lapse rates for parcels to potentially reach levels required for lightning. A few lightning flashes may also occur mainly this morning across parts of the Mid-South and Lower Mississippi Valley. ..Guyer.. 10/27/2024 Read more View the full article Quote
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