Current Mesoscale Discussions
Short-term SPC forecast discussions highlighting areas of developing or ongoing hazardous weather across the United States.
Active Mesoscale Discussions
Purple polygons show the areas covered by currently active SPC discussions.
SPC Discussion Details
Current products are listed with affected areas, concern, timing, graphics and the full technical discussion when available.
What Is a Mesoscale Discussion?
SPC Mesoscale Discussions explain short-term hazardous-weather evolution, often emphasizing the next one to three hours.
Many severe-weather MDs discuss whether a Tornado or Severe Thunderstorm Watch may be needed.
Forecasters describe instability, shear, forcing and observed storm trends.
MDs focus on weather evolving faster and more locally than the broader convective outlook.
SPC can also issue MDs for mesoscale winter-weather hazards such as heavy snow or freezing rain.
Severe Weather Tools
Use the discussion alongside the current outlook, mesoscale environment and active ENC alerts.
National and Eastern NC Day 1–3 severe-weather outlooks.
Open →AnalysisEast-Central MesoanalysisCurrent thermodynamic, shear and composite severe-weather fields.
Open →AlertsENC AdvisoriesActive watches, warnings and advisories for Eastern North Carolina.
Open →SPCOfficial Mesoscale DiscussionsSPC current MD page and official product graphics.
Open source ↗