SPC 0830Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0205 AM CST Sun Jan 31 2021 Valid 021200Z - 031200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected on Tuesday. ...Synopsis... Upper ridging will cover a majority of the CONUS west of the MS River early Tuesday morning, while upper troughing will extend along the East Coast. The East Coast trough is then expected to become increasingly negatively tilted as a shortwave trough progresses through its base while an embedded upper low drifts over the Northeast. The upper ridge is forecast to gradually dampen as it moves across the Plains and into the MS Valley. Lastly, upper trough initially extending from British Columbia into the northeast Pacific will move eastward throughout the period. This trough, which will feature very cold air aloft, will likely stretch from the Canadian Prairie Provinces southwestward to a strong embedded shortwave trough off the central/southern CA coast early Wednesday morning. Stable conditions are expected throughout the majority of the CONUS, limiting thunderstorm potential. Deeper convective cores could materialize within the frontal band moving through the Pacific Northwest, where cold mid-level temperatures could result in a lightning flash or two. Limited coverage and low potential for occurrence precludes introducing any thunder areas. ..Mosier.. 01/31/2021
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