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What Exactly Is a ‘Bomb Cyclone’?
Bomb cyclones rapidly intensify low-pressure systems causing heavy rain, snow, and winds that can down trees and cut power, with about 18 occurring annually near North America.
- Earlier this month, NOAA explained a 'bomb cyclone' forms when a storm's central pressure drops at least 24 millibars in 24 hours, signaling rapid intensification.
- Frigid Arctic air meeting warmer air masses generates low pressure that can deepen quickly, while strong jet-stream disturbances and 40 degrees latitude alter the intensification threshold.
- A 2021 study led by Robert Fritzen from Northern Illinois University found about 7% of nontropical low-pressure systems near North America were bomb cyclones, with Winter Storm Grayson plunging 59 millibars in 24 hours to 950 millibars as a notable example.
- Coastal and inland communities face heavy rain, blizzard conditions, and intense winds causing downed trees and outages, so residents should secure loose items and maintain weather alerts.
- Although most occur off the East Coast, bomb cyclones can strike the central U.S. and West Coast as well, especially between October and March.
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14 Articles
14 Articles
Winnipeg Free Press+7 Reposted by 7 other sources
How bomb cyclones form and create dangerous conditions
Breaking News, Sports, Manitoba, Canada
·Winnipeg, Canada
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Total News Sources14
Leaning Left1Leaning Right0Center13Last UpdatedBias Distribution93% Center
Bias Distribution
- 93% of the sources are Center
93% Center
C 93%
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