SPC 1630Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0932 AM CST Fri Jan 08 2021 Valid 081630Z - 091200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorm potential appears minimal over the U.S. mainland. ...Synopsis... Within the southern stream of a split flow regime, one shortwave trough and an associated surface cyclone will move eastward off the southeast Atlantic coast, while an upstream trough moves inland from OR to the Great Basin. A surface cold front has moved across south FL and the warm sector with the cyclone will likely remain offshore of NC. Otherwise, a small cluster of lightning flashes along the OR coast has diminished as of 1530z. Weak surface-based buoyancy will be possible in the short term in a narrow corridor along the immediate coast, though warming midlevel temperatures by late morning into midday suggest that any thunderstorm threat will be ending soon. ..Thompson.. 01/08/2021
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