The intensity of the cyclone is given by the color of the line segment with storms of higher pressure indicated by black and storms with lower pressure indicated in red. The images show storm tracks and total precipitation (mm), mean anomalous 925 mb wind vectors (m/s), mean significant ocean wave heights (m) [from the Environmental Modeling Center (EMC) Marine Modeling and Analysis Branch], and sea ice fraction respectively for the last 10, 30, and 90 day time periods. The final grouping illustrates cyclogenesis and cyclolysis locations during the three periods for storms with an average SLP less than or equal to 1005 mb during its track and that have lasted at least 24 hours. The smaller dots indicate higher pressure and larger dots lower pressure at the time of development or dissipation.
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