The Climate Consensus @climateconsensus.bsky.social · 13/06/2026A PRE forms when deep tropical moisture from the TC gets pulled northward and collides with a separate weather feature, such as a stalled front or boundary far from the storm itself. 100
The Climate Consensus @climateconsensus.bsky.social · 13/06/2026Add in an upper-level jet stream that’s intensifying nearby, and you get the ingredients for very heavy, often slow-moving rainfall, sometimes producing ‘training’ thunderstorms that repeatedly move over the same area like train cars on a track. 100
The Climate Consensus @climateconsensus.bsky.social · 13/06/2026PREs are a major forecasting challenge, as weather models often miss or underestimate them. When a PRE happens directly along the storm’s eventual track, the ground is already saturated by the time the TC’s own rain arrives, which can turn a bad flooding situation into a catastrophic one. 100
