Administrators NorthGeorgiaWX Posted December 21, 2023 Administrators Share Posted December 21, 2023 SPC 2000Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0150 PM CST Thu Dec 21 2023 Valid 212000Z - 221200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Isolated thunderstorms are possible today across parts of southern California, southern Arizona and from north Texas into southeast Kansas. Severe thunderstorms are not expected. ...20Z Update... Minor changes have been made to the general thunderstorm area across southern CA based on recent observational and short-term guidance trends. Severe thunderstorms continue to appear unlikely along the southern CA Coast owing to a dearth of boundary-layer instability. ..Gleason.. 12/21/2023 .PREV DISCUSSION... /ISSUED 1024 AM CST Thu Dec 21 2023/ ...Discussion... Low-amplitude flow aloft will prevail across most of the U.S. today, away from a developing closed low over the Canadian Maritimes, and a second low that will remain just off the southern California/Baja coast through the period. Surface high pressure -- and associated cool/stable low-level conditions -- will again encompass much of the country, limiting convective potential over a majority of the CONUS. Two exceptions -- where isolated thunderstorms may occur -- include southern portions of California and Arizona, ahead of the aforementioned offshore upper low, and into portions of the Kansas/Oklahoma/North Texas area, ahead of mid-level short-wave troughing advancing eastward across this area through otherwise weak/westerly flow. In both areas, severe weather is not expected. Read more View the full article Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.