Records and notable events 2005 Atlantic hurricane season

1 records , notable events

1.1 number of storms
1.2 intense storms
1.3 strength , activity
1.4 late activity

records , notable events

the 2005 season broke numerous records tropical cyclone activity, though might not active season in history, since records before 1944 incomplete.

number of storms

during season 28 storms formed (27 named , 1 unnamed), surpassing records storm formation in atlantic. more tropical storms, hurricanes, major hurricanes , category 5 hurricanes formed during season in recorded atlantic season.

the season first season use v , w names, , when season ran out of official alphabetical names after use of wilma, forecasters resorted using letters greek alphabet first time (although alpha , delta had been used subtropical storms in 1970s).

almost every storm in 2005 set record formation. of twenty-eight storms formed, twenty-two of them qualified earliest-forming storm of number. starting hurricane dennis, every storm such. (the record set dennis later broken debby in 2012, again broken in 2016 danielle.) season s activity reflected high cumulative accumulated cyclone energy (ace) rating of 250. total ranks second-most active season on record, 1933 season having higher ace value. ace is, broadly speaking, measure of power of hurricane multiplied length of time existed, storms last long time, particularly strong hurricanes, have high aces. ace calculated full advisories on tropical systems @ or exceeding 34 knots (39 mph, 63 km/h) or tropical storm strength. although officially, subtropical cyclones excluded total, figure above includes periods when storms in subtropical phase.

intense storms

hurricane wilma near peak intensity of 882 mbar (26.0 inhg)

three out of 6 intense atlantic hurricanes (by central pressure) on record occurred in 2005, topped off hurricane wilma s 882 mbar (26.0 inhg) minimum pressure, shattering 17-year-old record set hurricane gilbert. hurricanes emily, katrina , rita attained category 5 intensity, , hurricanes rita , katrina became fourth- , sixth-most intense recorded atlantic storms, respectively. hurricane emily not recorded category 5 storm, upgraded post-storm status national hurricane center. 2005 season season on record 4 category 5 storms on saffir-simpson hurricane scale; previous record two. in addition, hurricane dennis reached category 4 status, tying record set 1999 season 5 category 4 storms.

early strength , activity

in july, hurricane dennis became strongest storm form prior august , earliest category 4 storm form in caribbean. when hurricane emily reached category 5 intensity later in month, 2005 season became season have 2 hurricanes reach category 4 intensity before end of july; emily broke dennis s nine-day-old record strongest storm on record before august. emily first category 5 hurricane ever recorded in july , earliest 3 weeks (beating hurricane allen). high level of activity , strength reflected in accumulated cyclone energy value @ end of july; @ 63 highest ever.

additionally, 7 storms formed before end of july, breaking record of 5 set in 1887, 1933, 1936, 1959, 1966, , 1995 seasons. 5 of storms formed during july, new record.

late activity

after forming on november 29, hurricane epsilon became longest-lasting december hurricane on record when maintained hurricane strength december 2 december 7. epsilon second-strongest hurricane ever recorded in month of december; hurricane nicole of 1998 stronger.

when tropical storm zeta formed on december 30, came second hurricane alice (also december 30, 1954, later in day) latest ever last storm of season formed. zeta became second storm, after alice, persist through end of year , still active @ start of next.

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