Cold waves & winter storms
Assessed by an AI model against this signal's rubric. Describes conditions; not a forecast or advice.
Pending
This signal has not been assessed yet. The next scheduled run will rate it.
Why it matters
Severe cold and winter storms kill, cut power and spike gas demand, as in Texas in 2021; they matter most when energy supplies are tight.
What moves it
Polar vortex disruption, blocking highs, ENSO, Arctic outbreaks.
How it's rated
Alert
Deadly cold or winter storms with widespread power or gas outages.
Watch
Top-tier cold or winter-storm warnings across a major region, or a cold wave lifting gas demand sharply.
Normal
No major cold wave or winter storm affecting large populations.