A rapidly deepening storm over the western North Atlantic, northeast of Newfoundland, will deepen to a 928 mb hurricane-force storm by 1200 UTC 7th off the southeast coast of Greenland with winds up to 90 knots possible between the Greenland coast and the low center.
Significant wave heights could build up to 18 meters (59 feet).
By comparison, he Braer storm of January 1993 was the deepest ever recorded cyclone outside of the Tropics with a minimum core pressure of 914 mb.
How unusual is this?
Each winter season has, on average, about 37 non-tropical hurricane force wind events occur over the North Pacific and about 45 events over the North Atlantic. NOAA Ocean Prediction Center issues a “Hurricane Force Wind Warning” when sustained winds, or frequent gusts, of 64 knots (74 mph) or greater, either predicted or occurring, and not directly associated with a tropical cyclone.”