Administrators NorthGeorgiaWX Posted December 18, 2023 Administrators Share Posted December 18, 2023 SPC 2000Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 0136 PM CST Mon Dec 18 2023 Valid 182000Z - 191200Z ...NO SEVERE THUNDERSTORM AREAS FORECAST... ...SUMMARY... Severe thunderstorm potential is expected to remain low the remainder of this afternoon into tonight. ...Synopsis... Showers will continue across New England into this evening ahead of the elongated surface low currently from near Long Island toward the St. Lawrence Valley. Gusty surface winds also will persist given the strong pressure gradient and intense low-level winds just above the surface. However, any deeper convective elements will remain offshore, and thunderstorm potential will be low over land. Given deeper convection has pushed east, severe probabilities have been removed from southern New England. Isolated thunderstorms are still possible this afternoon across parts of central/northern CA, but chances should diminish by evening. Severe storms are not expected. ..Leitman.. 12/18/2023 .PREV DISCUSSION... /ISSUED 1013 AM CST Mon Dec 18 2023/ ...Southeastern New England.. A narrow/forced band of convection is moving quickly eastward across southeastern Massachusetts and Rhode Island at this time, immediately ahead of a strong, northeastward-moving mid-level vort max depicted by water vapor imagery just south of Long Island. While cool surface temperatures have prohibited surface-based instability in most areas, a small area of warmer (low 60s) boundary layer is indicated over far southeastern New England (southeast Massachusetts). As such, minor enhancement of the intensity of the convective band may occur over the next couple of hours, possibly resulting in some mechanical downward transport of intense low-level flow observed across this area. This could result in gusts slightly above the already above-severe level gradient gusts that are ongoing, until convection moves offshore later this afternoon. For additional short-term information, please refer to SWOMCD #2337. ...California... Thunderstorms associated with an inland-moving eastern Pacific short-wave trough have diminished across California, but a few additional lightning flashes remain possible this afternoon/ evening. 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.