category 1 was the lowest barometric pressure for hurricane irma.
category 1 was the lowest barometric pressure for hurricane irma.
what was the lowest barometric pressure for hurricane irma?
category 1
hurricane rita is the fourth strongest atlantic hurricane in terms of barometric pressure and one of three tropical cyclones from 2005 on the list, with the others being wilma and katrina at first and seventh, respectively. however, with a barometric pressure of 895 mbar (hpa; 26.43 inhg), rita is the strongest tropical cyclone ever recorded in the gulf of mexico. in between rita and katrina is hurricane allen. allen's pressure was measured at 899 mbar. hurricane camille is the sixth strongest hurricane on record. camille is the only storm to have been moved down the list due to post-storm analysis. camille was originally recognized as the fifth strongest hurricane on record, but was dropped to the seventh strongest in 2014, with an estimated pressure at 905 mbars, tying it with hurricanes mitch, and dean. camille then was recategorized with a new pressure of 900 mbars. currently, mitch and dean share intensities for the eighth strongest atlantic hurricane at 905 mbar (hpa; 26.73 inhg). hurricane maria is in tenth place for most intense atlantic tropical cyclone, with a pressure as low as 908 mbar (hpa; 26.81 inhg). in addition, the most intense atlantic hurricane outside of the caribbean sea and gulf of mexico is hurricane irma of 2017, with a pressure of 914 mbar (hpa; 27.0 inhg).
list of atlantic hurricane records
irma re-intensified into a category 3 hurricane at 12:00 utc on september 3 as it moved southwestwards under the influence of the ridge. beginning early the following day, the eye began increasing in size and improving in appearance, while deep convection surrounding the eye became more symmetrical. additionally, the hurricane headed into warmer sea surface temperatures as it approached the leeward islands. as a result, irma underwent another period of rapid intensification, reaching category 4 intensity at 18:00 utc on september 4 and category 5 at 12:00 utc on september 5. the extremely powerful hurricane began to take on annular characteristics, with mesovortices being observed within the well-defined eye, signaling the continued intensification of the storm, with sustained winds peaking at 180 mph (285 km/h) near 18:00 utc on september 5 – although it was operationally assessed at 185 mph (295 km/h). early on september 6, the storm reached its minimum barometric pressure of just before 06:00 utc, an estimate based on a dropsonde surface pressure observation and measurements from barbuda and saint barthélemy. this was the lowest barometric pressure in the atlantic since dean in 2007.
meteorological history of hurricane irma