BBS: TELESC.NET.BR Assunto: DAY2SVR: Nws Storm Prediction Center Norman Ok De: COD Weather Processor Data: Sat, 30 May 2026 06:02:13 +0000 ----------------------------------------------------------- ACUS02 KWNS 300602 SWODY2 SPC AC 300600 Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 0100 AM CDT Sat May 30 2026 Valid 311200Z - 011200Z ...THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS PARTS OF THE MID MISSOURI VALLEY... ...SUMMARY... Thunderstorms with large hail and severe gusts will be possible Sunday afternoon and evening across parts of the mid Missouri Valley. Isolated severe storms will be possible in parts of the Dakotas, and from central Kansas into Missouri. ...Northern Plains/Lower to Mid Missouri Valley/Central Plains/Northern Ozarks... At mid-levels, a shortwave trough will move northward across the northern Plains as heights rise across much of the central U.S. At the surface, a dryline will sharpen during the day from south-central South Dakota southward into east-central Nebraska and central Kansas. To the east of the dryline, surface dewpoints will range from the mid 60s F further north in southeast South Dakota to near 70 F southward into southeast Nebraska and far northwest Missouri. As surface temperatures warm within the moist sector, moderate instability will develop across the mid Missouri Valley by afternoon. Although large-scale ascent will remain weak over most of the region, model forecasts suggest that a northwest-to-southeast zone of low-level convergence will become focused during the afternoon to the east of the dryline. This will support scattered thunderstorm development, with the greatest convective coverage expected from southeast South Dakota into eastern Nebraska and western Iowa. Forecast soundings south and southwest of Omaha in the late afternoon have MLCAPE in the 3000 to 3500 J/kg range, 0-6 km shear near 30 knots, and low to mid-level lapse rates around 7 C/km. This environment will support supercells with large hail and severe wind gusts. The more dominant supercells could produce hailstones greater than 2 inches in diameter. The severe threat is expected to continue into the evening. A potential for isolated severe storms will also be possible over parts of the western and central Dakotas, along an axis of low-level moisture and instability. Further south into parts of eastern Kansas and west-central Missouri, a moist airmass will be in place on Sunday with surface dewpoints in the upper 60s to lower 70s F. This will result in moderate to strong instability by afternoon with MLCAPE likely to peak in the 3000 to 5000 J/kg range over parts of eastern Kansas and western Missouri. Although large-scale ascent will be limited, isolated storms could initiate in areas where low-level convergence becomes maximized. If a cell or two can develop and persist in the late afternoon or early evening, then an isolated severe threat would be likely. Hail and isolated severe wind gusts would be the primary threats. ..Broyles.. 05/30/2026 $$ = = = To unsubscribe from WX-STORM and you already have a login, go to https://lists.illinois.edu and use the "Unsubscribe" link. Otherwise email Chris Novy at cnovy@cox.net and ask to be removed from WX-STORM. --- SBBSecho 3.28-Linux * Origin: Capitol City Online (1:2320/107) ----------------------------------------------------------- [Voltar]