Weather tracker: Typhoon Mawar narrowly avoids landfall as it hits Guam

Wind and rain bring island to a standstill but eye replacement cycle fortuitously weakens it temporarily

Earlier this week, Typhoon Mawar whipped up a storm in western Micronesia as the category 4 storm came close to landfall on the island of Guam. Starting out as a tropical depression over the weekend, Mawar rapidly deepened and intensified over the following couple of days, almost reaching category 5 by Tuesday evening. Wind gusts peaked at 155mph (250km/h), briefly making Mawar a super typhoon about 100 miles south-east of the US island territory.

In a stroke of luck an eyewall replacement cycle occurred overnight, hours before the then super typhoon was due to reach Guam. The cycle involves the slight degradation of the storm’s structure as a new eye develops around the old eye. Consequentially, the storm’s intensity weakened temporarily while simultaneously spreading strong winds over a larger area. Mawar’s winds dropped to a sustained speed of 140mph as the typhoon brushed the northern edge of Guam at about 7am local time (2200 BST) Had Mawar made landfall, it would have been the first category 4 typhoon to do so since Typhoon Pamela in 1976.