Hoosiers Brace for Sudden Stratospheric Warming and Plunging Temperatures

According to the National Weather Service in Indianapolis, Hoosiers are likely to experience a dramatic cool down by the end of November 2025. This is due to the potential occurrence of a "sudden stratospheric warming" event, which could weaken the low-pressure area in the Arctic known as the polar vortex. This weakening could then push cold air southward, causing temperatures to plummet in Indiana.

While the events leading up to this cold snap are considered normal, the timing and severity of the cold weather may be a bit abnormal. Typically, such cold snaps occur later in the winter for Indiana, and temperatures tend not to dip quite as low in late November. However, this year, the cold weather could arrive earlier than usual.

In addition to the potential cold snap, the region is also expected to see a little more precipitation than average due to a weak La Niña event in the Pacific Ocean. This phenomenon can affect weather patterns across the United States, including in Indiana. However, the impact on temperatures remains uncertain, as the La Niña event is predicted to be weak and could end sooner than expected.