SPC Oct 13, 2017 0100 UTC Day 1 Convective Outlook

By Newsroom America Feeds at 12 Oct 2017

SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0746 PM CDT Thu Oct 12 2017 Valid 130100Z - 131200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... The risk of severe storms appears negligible across the U.S. tonight. ...01Z Outlook Update... Across the Pacific Northwest, weak destabilization has been sufficient to support scattered late afternoon thunderstorms near/just west of the southern Washington/ northern Oregon Cascades. Orographic forcing for ascent contributing to convective development has been enhanced by large-scale lift associated with an inland migrating short wave impulse. As the latter forcing shifts east of the Cascades and boundary layer cooling commences, the risk for additional thunderstorm activity may become increasingly negligible by 02-03Z. Elsewhere, areas of scattered weak thunderstorm development across parts of the Southeast are already in the process of diminishing with the loss of daytime heating. However, elevated moisture return to a zone of strengthening lower/mid tropospheric warm advection could contribute to increasing thunderstorm probabilities overnight (particularly toward the 09-12Z time frame) across parts of central/eastern Nebraska and adjacent portions of the mid Missouri Valley. ..Kerr.. 10/13/2017 Read more



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