Administrators NorthGeorgiaWX Posted July 23 Administrators Posted July 23 SPC 0730Z Day 3 Outlook Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0202 AM CDT Tue Jul 23 2024 Valid 251200Z - 261200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorm potential appears low on Thursday. ...Synopsis... An upper trough over the lower Great Lakes and Ohio Valley vicinity will shift east over the Northeast/Atlantic coast on Thursday. At the same time, an upper shortwave trough over the Pacific Northwest will track east near the international border and northern Rockies. This will push the upper ridge oriented from the central Rockies to northern Plains east toward the Upper Midwest. A cold front will develop south and east across the Ohio Valley and the Northeast. Ongoing showers and widespread cloudiness will mute destabilization ahead of the front across the Northeast. While somewhat stronger destabilization is possible across parts of the lower Ohio Valley, vertical shear will be weak, limiting potential for organized severe storms. Further across parts of central/eastern MT, 50s F dewpoints and steep midlevel lapse rates will foster MLCAPE values up to 1000 J/kg. Strong heating and increasing ascent with the approach of the upper trough will allow for scattered thunderstorm development over higher terrain during the afternoon. Vertical shear will be modest, but deep mixing and inverted-v sub-cloud thermodynamic profiles suggest gusty outflow winds will be possible. A cold front will sweep across the region during the evening/overnight, but increasing inhibition with eastward extent will likely limit severe potential. ..Leitman.. 07/23/2024 Read more View the full article Quote
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