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[2] [5] A weather station on the island recorded a minimum barometric pressure of 945 mbar (hPa; 27.91 inHg), though this measurement was taken nearly an hour before the center of the hurricane passed. [5] At the time, the storm's maximum winds were estimated at 140 mbar (220 km/h), the highest analyzed in connection with the system. [4]
The hurricane's strongest winds upon landfall were estimated to measure 125 mph (201 km/h), correlating with the upper-end of a Category 3 rating on the modern-day Saffir–Simpson hurricane wind scale. Near the time of landfall, the hurricane was documented as having a central pressure of 952 mbar (952 hPa; 28.1 inHg) at Tulane University. [1]
Around 0700 UTC on January 18, the ship MV Williams passed close to or through the center of Winona and measured a pressure of 991 mbar (991 hPa; 29.3 inHg) alongside 85 km/h (55 mph) sustained winds with gusts up to 130 km/h (80 mph). This was the only direct measurement in relation to the cyclone.
The strongest storm of the season, Cleo, peaked with maximum sustained winds of 150 mph (240 km/h) and a minimum barometric pressure of 938 mbar (27.7 inHg). Four additional storms originated in September, including Ethel, Florence, Gladys, and Hilda. Hurricane Isbell was the sole tropical cyclone to form in the month of October. The final ...
The JMA estimated peak 10-minute sustained winds of 220 km/h (140 mph) and a minimum barometric pressure of 890 hPa (mbar; 26.28 inHg), [165] while the JTWC estimated peak 1-minute sustained winds of 315 km/h (195 mph).
Accumulated cyclone energy (ACE) is a measure of the activity of a hurricane season. It is calculated by squaring the windspeed of a cyclone with at least tropical storm-force winds every six hours, summing the results, and dividing that total by 10 4. As a tropical cyclone does not have gale-force winds until it becomes a tropical storm ...
On September 27, Joyce attained hurricane status, and early on September 28, Joyce reached a peak intensity of 90 mph (140 km/h) and a central pressure of 975 mbar (28.8 inHg). At the time, it was located about midway between Africa and the Lesser Antilles, and had a fleeting pinhole eye. [57]