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28–33 knots 32–38 mph 50–61 km/h 13.9–17.1 m/s 13–19 ft 4–5.5 m Sea heaps up and white foam from breaking waves begins to be blown in streaks along the direction of the wind; spindrift begins to be seen Whole trees in motion; inconvenience felt when walking against the wind 8 Gale, fresh gale 34–40 knots 39–46 mph 62–74 km/h ...
Since the 2024–25 cyclone season, a subtropical system will be classified as a subtropical storm if it reaches wind speeds of 35 knots (65 km/h; 40 mph). [26] If the named tropical system intensifies further and reaches winds speeds of 48 knots (89 km/h; 55 mph), then it will be classified as a severe tropical storm.
1 international knot = 1 nautical mile per hour (by definition), 1 852.000 metres per hour (exactly), [5] 0.51444 metres per second (approximately), 1.15078 miles per hour (approximately), 20.25372 inches per second (approximately) 1.68781 feet per second (approximately). The length of the internationally agreed nautical mile is 1 852 m.
So an intensity of 115 kn is rated Category 4, but the conversion to miles per hour (132.3 mph) would round down to 130 mph, making it appear to be a Category 3 storm. Likewise, an intensity of 135 kn (~155 mph, and thus Category 4) is 250.02 km/h, which, according to the definition used before the change would be Category 5.
At some point, the lower limit was reduced to 23 miles per hour (20 knots). Today, however, most places have standardized on 25 to 38 miles per hour (22 to 33 knots), encompassing the combined ranges of forces 6 and 7 on the Beaufort scale. Winds strong enough to trigger a small craft advisory may be referred to as being advisory-force.
The National Weather Service in Miami has issued a wind advisory for Thursday as an approaching cool front could spur 40-mph gusts in Palm Beach County and push temperatures to near 90 degrees ...
Carmen was later upgraded to a typhoon on October 3, before forming an eye while moving northward. Carmen underwent rapid intensification into a super typhoon in the vicinity of Agrihan on October 6, as its center passed above the island of Pagan, where powerful winds of 150 knots (280 km/h; 170 mph) from the storm were recorded. The storm held ...
Winds will “accelerate to dangerous levels” starting Tuesday afternoon, according to the NWS. High wind warnings are in effect through at least Wednesday for much of Southern California.