SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1237 AM CDT Fri Apr 11 2025 Valid 121200Z - 131200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS IN PARTS OF NORTHEAST WY/SOUTHEAST MT/WESTERN SD... ...SUMMARY... Isolated severe gusts to 65 mph are possible from the Big Horns to the Black Hills during the late afternoon to mid-evening Saturday. ...Big Horns to the Black Hills... A shortwave trough over WA/southern BC at 12Z Saturday will progress across the northern Rockies and MT. Mid-level height falls will overspread the northern High Plains during peak diurnal heating. Despite only scant buoyancy, the strengthening large-scale ascent will support scattered thunderstorms by late afternoon. With a belt of strong mid-level west-southwesterlies, a couple low-topped, high-based supercells are possible. Deeply mixed thermodynamic profiles to the east-southeast of the Big Horns should foster a threat for strong to localized 50-55 kt gusts before convection wanes after sunset. ...Mid-MO Valley to the Upper Midwest... As the low-level jet strengthens across the southern to central Great Plains Saturday night, sufficient ascent may support isolated thunderstorms overnight. But with poor-quality moisture return relative to the stout EML, it is uncertain if/where convection will be sustained. Uninhibited parcels may be rather elevated and with the expectation of weak buoyancy at most, severe hail potential appears limited. ..Grams.. 04/11/2025
