SPC Apr 12, 2025 0600 UTC Day 2 Convective Outlook

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

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