SPC Jan 13, 2021 1730 UTC Day 2 Convective Outlook
SPC 1730Z Day 2 Outlook
Day 2 Convective Outlook NWS Storm Prediction Center Norman OK 1106 AM CST Wed Jan 13 2021 Valid 141200Z - 151200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... No thunderstorms are expected over the U.S. mainland on Thursday. ...Synopsis... An intense upper trough over the Plains early Thursday will evolve into a strong, closed synoptic low over the Midwest by Friday morning. A surface cold front will extend from the Upper Midwest into the southern Plains during the morning, and shift eastward through the period, extending from the Lake Michigan vicinity toward the central Appalachians to the central Gulf coast by Friday morning. A lack of meaningful Gulf return flow ahead of this system will result in dry and stable conditions ahead of the front, and thunderstorms are not expected. An upper ridge will spread across the western U.S., with surface high pressure in place over the Great Basin. This will result in warm and dry conditions west of the Rockies. ..Leitman.. 01/13/2021
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