SPC 1300Z Day 1 Outlook
Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0653 AM CST Sat Dec 26 2020 Valid 261300Z - 271200Z ...NO THUNDERSTORM AREAS FORECAST... ...SUMMARY... Thunderstorms are not expected through tonight in the contiguous United States. ...Synopsis... A low-amplitude shortwave trough will move inland this morning over southern OR/northern CA, and over the northern Great Basin this afternoon. A few lightning flashes have been noted with convection overnight near the northern CA coast and inland near Mount Shasta, but the lightning has been rather sparse. While additional isolated flashes will be possible, the expected coverage of thunderstorms both this morning across northern CA and later today across southern ID, is too low to warrant adding an outlook area. Otherwise, a cold/dry continental air mass across the Gulf and Atlantic coasts will preclude thunderstorms. ..Thompson.. 12/26/2020
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