Tag: 20,

SPC 2000Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0141 PM CST Mon Jan 20 2025 Valid 202000Z - 211200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... No thunderstorms are expected across the U.S. through tonight. ...20z Update... No changes are needed to the D1 Convective Outlook. See previous discussion below for more information. ..Thornton/Mosier.. 01/20/2025 .PREV DISCUSSION... /ISSUED 1028 AM CST Mon Jan 20 2025/ ...Synopsis... Another surge of cold air is anticipated across the CONUS, reinforcing the polar airmass already in place. This will result in a maintenance of dry and stable conditions, with

SPC 1730Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1102 AM CST Mon Jan 20 2025 Valid 211200Z - 221200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not forecast on Tuesday through Tuesday night. ...Synopsis... Thunder potential will be nil across much of the CONUS during the D2 period. Deep convection will be relegated to the Gulf, initially over the west-central portion before spreading towards the southeast part late. The slimmest of elevated buoyancy (MUCAPE below 100 J/kg) along the Upper TX to LA Gulf Coast may coincide with mixed-phase parcels, supporting weak convection

SPC 1630Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1028 AM CST Mon Jan 20 2025 Valid 201630Z - 211200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... No thunderstorms are expected across the U.S. through tonight. ...Synopsis... Another surge of cold air is anticipated across the CONUS, reinforcing the polar airmass already in place. This will result in a maintenance of dry and stable conditions, with no thunderstorms anticipated. Some deeper convection is possible late tonight/early tomorrow along the middle/upper TX Coast as warm-air advection strengthens throughout the warm sector of surface low developing over the

SPC 0700Z Day 2 Outlook Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1149 PM CST Sun Jan 19 2025 Valid 211200Z - 221200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not forecast on Tuesday. ...Synopsis... A large positive-tilt upper trough will stretch from the upper Great Lakes into the southern High Plains Tuesday morning, and will progress toward the East Coast by 12Z Wednesday. Behind this wave, another lobe of vorticity will drop south across the Rockies and toward the Plains late. At the surface, a strong high pressure ridge will extend from the Great Basin all

SPC 1200Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1101 PM CST Sun Jan 19 2025 Valid 201200Z - 211200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... The risk for thunderstorms appears negligible across the U.S. today through tonight. ...Discussion... A significant short wave perturbation is forecast to continue progressing through the crest of blocking larger-scale mid-level ridging centered over the northeastern Pacific, eventually digging across the Canadian Rockies and adjacent Pacific Northwest by late tonight. Downstream, short wave ridging likely will overspread the Canadian Prairies, northern U.S. Rockies and Great Basin, in the wake of