Administrators NorthGeorgiaWX Posted December 18, 2023 Administrators Share Posted December 18, 2023 SPC 1630Z Day 1 Outlook Day 1 Convective Outlook NWS Storm Prediction Center Norman OK 1013 AM CST Mon Dec 18 2023 Valid 181630Z - 191200Z ...THERE IS A MARGINAL RISK OF SEVERE THUNDERSTORMS ACROSS SOUTHEASTERN NEW ENGLAND... ...SUMMARY... Convectively enhanced wind gusts will affect southeastern New England this afternoon. ...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. ..Goss/Thornton.. 12/18/2023 Read more View the full article Quote Link to comment Share on other sites More sharing options...
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