SPC 0830Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0126 AM CST Sat Dec 20 2025 Valid 221200Z - 231200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected on Monday. ...Discussion... The large-scale pattern will undergo modest amplification on Monday via additional upper ridging over the south-central CONUS and northern Mexico. As a surface high continues to transition east-southeastward along the Eastern Seaboard/Southeast, moderate low-level moistening will occur north-northeastward across Louisiana/eastern half of Texas toward the ArkLaTex. A few thunderstorms could occur within this warm/moist advection regime, but it currently appears that upper ridging and related mid-level capping should considerably limit thunderstorm potential. In the Pacific Northwest, a few lightning flashes could occur near coastal Washington, but this potential should remain limited/isolated while also trending less thermodynamically favorable by late in the day. ..Guyer.. 12/20/2025
