SPC 0830Z Day 3 Outlook
Day 3 Convective Outlook NWS Storm Prediction Center Norman OK 0212 AM CST Sat Jan 02 2021 Valid 041200Z - 051200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... A few low-topped thunderstorms will be possible Monday across the coastal Pacific Northwest and into parts of northern California. ...Synopsis... The upper-air pattern will remain amplified, yet progressive on Monday, with an upper trough over the Southeast and a secondary wave moving eastward across the Great Lakes. This will reinforce high pressure from the Plains into the Southeast, providing stability with continued offshore flow. To the west, significant height falls will occur during the day from northern CA into the Pacific Northwest as an amplified shortwave trough moves ashore around 00Z. Cool air aloft combined with lift from a cold front may result in isolated to scattered low-topped showers and thunderstorms, with the greatest lightning flash density likely offshore. Low-level lapse rates over land will be relatively poor with little to no heating due to increasing clouds and precipitation. Due to the weak instability, severe weather is not anticipated. ..Jewell.. 01/02/2021
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