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Grampian Weather Services
"The weather ... as forecast"
Synoptic scale: Priming
Features that will prime the atmosphere for DMC (eliminate CIN and / or increase CAPE)
What to look for:
- Mid-level troughs (vorticity maxima, 500-hPa height falls, cyclonic swirls on loops of water-vapor images)
- Wind maxima (associated with relative large height gradient near the bases of 500-hPa shortwave troughs)
- Discount severe TS in areas where shortwave troughs and their associated dynamic lifting aren't predicted to arrive during the forecast time.
- Severe storms can still occur in the absence of a 500-mb shortwave (merging storms associated with the collision of sea-breeze fronts).
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