Day 1 Severe Weather Outlook

Valid 210100Z – 211200Z


Thunderstorm areas are not expected over the contiguous U.S.

…01z Update…

Thunderstorm probabilities will remain very low through 21/12z.

Strong short-wave trough off the Pacific Northwest Coast will
approach WA/OR late tonight. While lapse rates will steepen
immediately ahead of this feature, forecast soundings suggest any
convection that develops will be weak, and likely too shallow to
warrant any meaningful threat for lightning.

Isolated deep convection continues to shift south of the FL
Peninsula as synoptic front is well offshore at 00z. Any
thunderstorms associated with this boundary will remain south of the

..Darrow.. 01/21/2020


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