SPC 0600Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1222 AM CDT Sat Apr 12 2025 Valid 131200Z - 141200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected on Sunday or Sunday night. ...Upper MS Valley to the Great Lakes... Isolated, elevated thunderstorms are expected to be the predominant convective scenario on Sunday. An amplifying shortwave trough will move east across northern portions of the Great Plains and Upper Midwest. This will yield deepening of a surface cyclone from the central Plains to Lake Superior. Despite this amplification, poor quality boundary-layer moisture return relative to a stout EML appears likely to inhibit surface-based storm development through the period. Thin, uncapped buoyancy will probably be relegated to parcels around 700 mb. This will expand east during the day from the Upper Midwest into the Great Lakes. Small hail is possible, mainly across the Upper MS Valley, where fast flow will exist in the cloud-bearing layer. ...CO to MO... Isolated thunderstorms are possible in CO by late afternoon Sunday within a post-frontal environment characterized by limited low-level moisture and meager buoyancy. Very isolated thunderstorms may develop Sunday night into Monday morning with eastward extent across KS to MO. Scant elevated buoyancy may develop as 700-mb frontogenesis strengthens within a highly diffluent upper-level flow regime, atop an increasingly post-frontal stable surface. ..Grams.. 04/12/2025
