SPC 0100Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0748 PM CDT Thu Jul 21 2022 Valid 220100Z - 221200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THE SOUTHEAST...AND PARTS OF THE CENTRAL PLAINS... ...SUMMARY... Scattered severe thunderstorms capable of producing mainly damaging wind gusts remain possible over parts of northern New England, the Southeast, and across parts of the central Plains. ...01z Update... Mid-level trough is ejecting across QC/northern New England early this evening. Influence of this feature will quickly shift east of ME and trailing convection that extends across northern ME should gradually wane, especially as the boundary layer begins to cool over the next few hours. Multiple thunderstorm clusters that merged over the southern Appalachians earlier this afternoon are now propagating south-southwest within weakening flow field. Primary concern for the next several hours remains over central AL but isolated storms are also forming west across MS. Overall severe threat should gradually shift south through the evening hours. High-based thunderstorms evolved over western NE shortly after peak heating. This activity is begun to cluster a bit as it propagates toward central/south-central NE. LLJ will likely strengthen a bit after sunset and this may contribute to some convective longevity, especially given the local reservoir of buoyancy that currently resides immediately downstream of this activity. Some threat for isolated severe storms also exists for the next several hours with storms that are spreading across southern ND toward northeast SD. Large hail and gusty winds remain the threats with these storms. ..Darrow.. 07/22/2022
