SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1006 AM CST Tue Nov 17 2020 Valid 171630Z - 181200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorms are not expected across the contiguous U.S. through tonight. ...Western WA to coastal OR... Increasingly onshore low-level trajectories may yield sufficient moistening for the development of scant surface-based buoyancy, mainly across portions of western WA later this afternoon. Isolated, low-topped thunderstorms may form amid scattered showers with sufficient effective bulk shear for a risk of small hail and locally gusty winds. Another round of potential isolated thunderstorms may develop towards the end of the period (09-12Z) along the OR coast as a mid-level vorticity maximum embedded within the broader northeast Pacific trough approaches the coast. ...Far South FL... Isolated low-topped showers near the northern Bahamas should translate southwest across the FL Straits today. The 12Z Miami sounding continued to sample relatively warm/dry mid-levels above 600 mb which should serve to limit deep convective development amid weak low-level convergence. Further drying of the boundary layer later today will suppress all convection to south of the Keys by this evening. ..Grams.. 11/17/2020
There’s more click here.