Around October 16, a strong cold front moved across the eastern United States and emerged over the Atlantic Ocean. The frontal boundary stalled over water, and a low pressure system formed along it and deepened over the following days. By October 21, the low was producing gale force winds and was located northwest of Bermuda. It shed its frontal characteristics and had enough convective organization to be designated Subtropical Storm Josephine that evening. At the time it was named, Josephine already had quite strong winds, with maximum sustained winds assessed at 65 mph.
The storm accelerated northeastward over the following day, its outer bands narrowly missing the northeast U.S. As it moved away from shore, Josephine began its transition to an extratropical cyclone, completing it by late on October 22. The cyclone continued to generate extremely strong winds as it moved out to sea; in fact these winds intensified to category 1 strength for a time before ultimately weakening.
The image above shows Josephine on October 22.
Josephine was a short-lived but strong subtropical storm, and in fact reached peak intensity after extratropical transition.
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