Day 4-8 Convective Outlook NWS Storm Prediction Center Norman OK 0314 AM CST Sat Dec 16 2023 Valid 191200Z - 241200Z ...DISCUSSION... An upper trough will likely extend from southwest Quebec into the Mid-Atlantic early D4/Tuesday, before then progressing eastward throughout the day. Zonal flow is expected across much of the CONUS in its wake on D5/Wednesday, before a slow-moving upper low initially off the southern CA coast introduces some amplitude into the southern stream. This upper low will likely remain off the southern CA coast through the period, but a preceding low-amplitude shortwave may move through the Southwest on D5/Wednesday and into Plains on D6/Thursday. Modest low-level moisture return should precede this shortwave, and some interaction between this shortwave (and attendant cold front) with this buoyancy is possible on D7/Friday. However, weak buoyancy is currently expected to limit the overall severe potential.
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