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As the storm progressed northwestward along the southern edge of a mid-level subtropical ridge, it intensified into a tropical storm and was named Prapiroon by the JMA around 00:00 UTC on July 21; [8] however, a few hours later, wind shear and dry air entrainment began to affect the storm, yet deep convection continued to build around the ...
Early on November 9, Nicole reached its initial peak intensity with sustained winds 70 mph (110 km/h) and a minimum central pressure of 984 mbar (hPa; 29.06 inHg). [1] Strengthening was then halted when mid- to upper-level dry air entrained into the core of Nicole, disrupting the central convection and briefly weakening the storm as it ...
The cyclone peaked in strength as a Category 1 hurricane on the Saffir–Simpson scale (SSHWS), with maximum sustained winds of 85 mph (140 km/h) and a central pressure of 981 mbar (hPa; 28.97 inHg). Alex weakened to a high-end tropical storm before making landfall on Terceira Island on January 15.
The nor'easter became a bomb cyclone [8] on October 26–27, when its central barometric pressure dropped from 996 mbar (29.41 inHg) to 973 mbar (28.73 inHg) over a 24 hour period. During this time, at 00:00 UTC on October 27, the system also reached its peak strength with sustained winds of 70 mph (110 km/h), while located about 125 mi ...
[228] [229] During the next day, Chaba began explosive intensification, [230] reaching Category 5 super typhoon intensity with a sharp 5 nmi (9.3 km; 5.8 mi) wide eye. [231] Chaba reached its peak intensity with 10-minute sustained winds of 215 km/h (135 mph), while 1-minute sustained winds were at 280 km/h (175 mph), and the minimum central ...
Even though the area of low pressure, which had now deepened to 988 millibars (29.2 inHg) [52] late on February 13, was offshore of the East Coast, little to no precipitation was falling as a result of dry air to funnel its way into the storm. Most of the snow totals in these areas ranged anywhere from 6–24 inches (0.50–2.00 ft), as a result.
Although it was strengthening, QuikSCAT suggested that the low-level circulation was falling apart, as it appeared to be merging with the cold front. [85] At 0000 UTC on October 21, Nadine attained its peak intensity with winds of 60 mph (95 km/h) and a minimum barometric pressure of 999 mbar (29.5 inHg). [83]